NEHA RS/REHS Exam

Question 87 The addition of sodium bicarbonate will a. Raid the ambient water temperature b. Lower the ambient water temperature c. Raise the pH d. Lower the pH

Raise the pH

Question 78 Marks: 1 Common refrigerants include which of the following? Choose one answer. a. freon b. ammonia c. carbon dioxide d. all of the above

all of the above

Question 40 Following a disaster raw food should be a. washed in bleach b. cooked well c. avoided if possible d. both b and c

both b and c

Question 83 Thawing a 16-pound turkey at 40F will take a period of __ days? a. 6 hours b. 12 hours c. about 3 days d. 24 hours

about 3 days

Question 13 The most hazardous category of nuclear emergency is a. general emergency b. unusual event c. site area emergency d. alert

general emergency

Question 7 Which would not be considered an appropriate use for a completed landfill? a. public work b. golf course c. housing development d. all

housing development

Question 18 Muriatic acid is a weak solution of: a. nitric acid b. sulfuric acid c. acetic acid d. hydrochloric acid

hydrochloric acid

Question 9 The primary route of entry of PCBs into human is: a. absorption b. inhalation c. inoculation d. ingestion

ingestion

Question 47 The major source of lead poisoning today is: a. ingestion of lead-tainted food b. ingesting lead-contaminated drinking water c. inhalation of polluted air d. ingestion of lead-based house paint

ingestion of lead-based house paint

Question 52 Marks: 1 Yeast added to a new septic tank speeds up digestion by a factor of 2.7. Choose one answer. a. True b. False

False

Question 32 The regulatory level for benzene under the RCRA Toxicity Characteristic rule is a. 0.50 mg/l b. 100 mg/kg c. 0.2 mg/l d. 25.0 mg/l

0.50 mg/l

Question 48 Lead levels exceeded 10ug/dL in US children aged 6 and under in 1990 a. 300000 b. 3000 c. 1000000 d. 3000000

3000000

Question 15 Perhaps the greatest potential for reducing the demand for water could result from: a. Better conservation practices in homes b. Development of recycling plants by industry c. Better use of technology in agriculture irrigation d. More use of home sewage disposal units

Better use of technology in agriculture irrigation

Question 37 Marks: 1 A concentration of x-ray machines in one building will not affect scatter radiation. Choose one answer. a. True b. False

False

Question 38 Marks: 1 The examination of road cuts, stream embankments, and/or building excavations provides only marginal information about soils due to oxidation. Choose one answer. a. True b. False

False

Question 8 Marks: 1 The genetic harm done by radiation is not cumulative. Choose one answer. a. True b. False

False

Question 98 It is not necessary for a dental unit to have filters. a. True b. False

False

Question 40 When engaging in complete asbestos removal, the provisions of which one of the following must be strictly met? a. Hazardous Substances Act b. Right to Know Legislation c. Clean Air Act d. Asbestos Hazard Emergency Removal Act

Clean Air Act

Question 22 The majority of damage from X-rays during fetal development is to the: a. Reproductive system b. Cardio-respiratory system c. Nervous system d. Musculoskeletal system

Nervous system

Question 9 Most cases of groundwater pollution occur in areas: a. Of high pollution b. Where solid waste is buried c. Of deforestation d. Where there is a large animal concentration

Of high pollution

Question 39 Which one of the following creates perhaps the greatest risk of exposure to ionizing radiation? a. Conversion of enriched uranium hexafluoride gas into pellets b. Enriching uranium to increase the concentration of the isotope c. Mining the uranium d. Converting yellow cake to gaseous uranium hexaflouride

Mining the uranium

Question 16 Swimming pool water that is brownish black in color may be due to: a. H2S b. Mg c. Mn d. Fe

Mn

Question 55 If radon is a problem in your area the following locations would be rooms of higher risk; 1. areas with showers and flood drains 2. basements 3. washrooms 4. all of the above

basements

Question 74 Nutrients associated with eutrophication include a. phosphates b. nitrogen c. organic carbon d. all of the above

all of the above

Question 96 Sewer gas may contain a. H2S b. methane c. chlorine d. all of the above

all of the above

Question 20 Marks: 1 The agencies general administrative plan provides the basis for Choose one answer. a. a search warrant b. an administrative warrant c. a seizure d. none of the above

an administrative warrant

Question 42 Marks: 1 Beta particles can be stopped by a few millimeters of aluminum. Choose one answer. a. True b. False

True

Question 70 Marks: 1 Almost all sound contains multiple frequencies. Choose one answer. a. True b. False

True

Question 7 The mosquito genus responsible for the transmission of malaria is: a. culex b. aedes c. plasmodium d. anopheles

anopheles

Question 45 A correct statement about police power is that it: a. is largely reserved for the federal government by the Constitution b. refers to the alleged abuse of persons arrested c. cannot be used except by officially appointed police officers d. is a plenary and inherent attribute of sovereign governments

is a plenary and inherent attribute of sovereign governments

Question 56 Perhaps the most serious manifestation of damage done as a result of lead being in the bloodstream is to: a. cardiac tissue b. kidney tissue c. nerve tissue d. reproductive cells

nerve tissue

Question 19 Marks: 1 The ______ in many cities has been leveling off, but has been increasing in the suburbs. Choose one answer. a. pollution rate b. rate of population growth c. use of private automobiles d. use of public water

rate of population growth

Question 52 What is the most important step in the use of pesticides? a. use the right pesticide for the job b. wear proper personal protective equipment c. use the pesticide downwind d. read the label

read the label

Question 20 Some studies indicate that swimmers have a higher over-all illness rate than non-swimmers a. regardless of bathing water quality b. due to poor regulatory practice c. if they are over 50 years of age d. if they swim only in pools

regardless of bathing water quality

Question 69 Marks: 1 Which of the following duties of state and local health agencies ensures that public health and welfare are protected? Choose one answer. a. regulatory responsibilities b. community planning c. plan preparation d. plan implementation

regulatory responsibilities

Question 39 Which one of the following means of remedying an asbestos hazard is most expensive? a. demolition b. removal c. enclosure d. encapsulation

removal

Question 24 Which method of mosquito control is not very effective for nuisance prevention? a. screening b. fogging c. residual spray d. repellents

residual spray

Question 19 Under FIFRA, all pesticides must be classified by what manner? a. toxic or nontoxic b. carcinogenic or non-carcinogenic c. restricted use or general use d. none of the above

restricted use or general use

Question 12 Marks: 1 The killing of an infectious agent outside the body by chemical or physical means is termed Choose one answer. a. detoxification b. deodorization c. destabilization d. disinfection

disinfection

Question 21 Perhaps the most significant long-term effect of dioxin exposure appears to be: a. disruption of hormonal regulation of reproduction b. possibility of liver cancer c. teratogenic effects on the unborn d. development of tissue affinity for other toxic substances

disruption of hormonal regulation of reproduction

Question 8 What type soil is most desirable as a landfill cover? a. sandy loam b. clay c. sand d. gravel

sandy loam

Question 34 In 1984, RCRA was amended to require __ or the equivalent, at hazardous waste landfills. a. double liners b. auxiliary incinerators c. EPA coordinators d. all of the above

double liners

Question 39 Marks: 1 An interior food service facility wall surface should not be constructed of Choose one answer. a. wallboard b. marble c. concrete d. clay tile

wallboard

Question 69 Marks: 1 Which of the following is not a primary pollutant? Choose one answer. a. sulfur dioxide b. hydrocarbon c. nitrogen dioxide d. sulfuric acid

sulfuric acid

Question 13 The one of the following that is not ordinarily considered to be transmitted by an insect? a. malaria b. tetanus c. typhus fever d. yellow fever

tetanus

Question 9 From the standpoint of exposure to radioactive minerals, which one of the following building materials would probably be most "safe"? a. Granite b. Wood c. Brick d. cement

Wood

Question 18 Marks: 1 The female and male mosquito feed only on the blood of humans and animals. Choose one answer. a. True b. False

False

Question 19 Marks: 1 Rats are one of the seven animals most likely to carry rabies. Choose one answer. a. True b. False

False

Question 2 Marks: 1 Particulates larger than 10 microns can penetrate easily into the respiratory tract. Choose one answer. a. True b. False

False

Question 21 Marks: 1 The prime feeding time of the Anopheles mosquito is usually around midday. Choose one answer. a. True b. False

False

Question 25 Marks: 1 Fluoroscopy exams should be done before x-rays. Choose one answer. a. True b. False

False

Question 25 Marks: 1 Some of the main sources of pollen are trees in the summer, grasses in the spring, and weeds in the winter. Choose one answer. a. True b. False

False

Question 25 Marks: 1 The prevention of deaths from a particular disease increases the overall life expectancy in direct proportion to its decreased mortality. Choose one answer. a. True b. False

False

Question 28 Marks: 1 Sodium fluoroacetate, also known as "1080," is the most effective fast-acting rodenticide available for use throughout the United States. Choose one answer. a. True b. False

False

Question 3 Marks: 1 In practice, exposure to all ionizing radiation is controlled by the use of shields of lead. Choose one answer. a. True b. False

False

Question 31 Marks: 1 Soil moisture of about 30% to 45% of saturation is the best for survival of pathogens. Choose one answer. a. True b. False

False

Question 34 Marks: 1 More information is known about effects of trace amounts of chemical carcinogens than radiation effects. Choose one answer. a. True b. False

False

Question 14 Perhaps the most "infamous" incidence of radiation-induces illness involved: a. Women who painted watch dials b. Individuals who received radium injections for arthritis c. Children who were treated for ringworm in the 1920s d. Teenagers who had acne

Women who painted watch dials

Question 5 What characteristic of PCBs made them an environmental and health hazard? a. high heat resistance b. low boiling point c. chemical stability d. high fat solubility

chemical stability

Question 12 The main component of the Montreal Protocol was the: a. elimination of the use of nitrogen-base fertilizers b. cutting back and eventually eliminating the use of chlorofluorocarbons c. increasing research related to the ozone layer depletion d. decreasing subsidies to companies that pollute the air

cutting back and eventually eliminating the use of chlorofluorocarbons

Question 64 The major source of mercury emissions into the atmosphere is from: a. coal burning b. evaporation from paints during the drying process c. burning of industrial wastes d. dust from mining operations

coal burning

Question 20 Marks: 1 The FDA action level for aflatoxins in milk is Choose one answer. a. 20 ppb b. 7 ppb c. 1.0 ppb d. 0.5 ppb

0.5 ppb

Question 8 What is the primary reason the pH of a pool should stay less than 8? a. causes skin irritation b. decreases the amount of active chlorine available c. promotes growth of coli form d. attacks concrete walls

decreases the amount of active chlorine available

Question 20 Immune system interference has been demonstrated with dioxin exposure in all the following except: a. humans b. rats c. mice d. hamsters

mice

Question 13 Marks: 1 In an environmental control statistical report for program, the "total man-days expended" will Choose one answer. a. include the total number of premises or initial services in each program activity for which the local health unit is responsible b. refer to the number of premises where an annual, routine, or special inspection was made for the first time during the year c. show the type and amount of manpower allocated to each of the program activities d. none of the above

show the type and amount of manpower allocated to each of the program activities

Question 16 The amount of radiation damage in human exposure to ionizing radiation is measured in term of: a. Grays (Gy) b. Relative biological effectiveness (RBEs) c. Rads d. sieverts

sieverts

Question 3 Which soil has the greatest % porosity a. silt b. uniform sand c. gravel d. sandstone

silt

Question 37 Marks: 1 Muerto Canyon virus (MCV) is a hantavirus mainly carried by Choose one answer. a. woodchucks b. beavers c. deer mice d. skunks

deer mice

Question 43 Marks: 1 Rodents are the primary reservoir/host of the hantavirus. In particular, ______ appears to be the primary reservoir for hantavirus, which was first recognized in 1993 in the southeastern United States. Choose one answer. a. rat b. rabbit c. house mouse d. deer mouse

deer mouse

Question 17 Nearly 1/4 of all global carbon dioxide emissions are the result of a. automobile emissions b. decreased use of lead-based aviation fuels c. deforestation d. increased world-wide industrialization

deforestation

Question 15 Name the three zones of stream pollution, in order of normal chain of events. degradation decomposition recovery

degradation decomposition recovery

Question 28 To prove in court that a septic tank is polluting a stream, the best evidence is to show that: a. dye placed in the septic tank appears in the stream b. organisms of the coli aerogenes group are present in the stream c. fish are killed at the point of pollution d. the stream has a septic odor and appearance

dye placed in the septic tank appears in the stream

Question 41 Alkalinity exists in three forms. Which is not one of these forms? a. Bicarbonate b. Hydroxide c. Carbonate d. hypochlorite

hypochlorite

Question 3 Marks: 1 Rocky Mountain spotted fever is transmitted by Choose one answer. a. cockroaches b. dog ticks c. mites d. skunks

dog ticks

Question 9 When treating water with chlorine in emergency situations, the chlorine dosage should be __ when the water is turbid or colored. a. tripled b. discontinued c. decreased d. doubled

doubled

Question 24 Marks: 1 A well developed ______ activity report can serve practically all the reporting needs of an organization for statistical purposes. Choose one answer. a. daily b. weekly c. monthly d. yearly

daily

Question 70 Marks: 1 Loam is a mixture of gravel, sand, silt, and clay containing what? Choose one answer. a. highly toxic metals b. potassium and ammonium c. decayed plant and animal matter d. dirt

decayed plant and animal matter

Question 58 Marks: 1 Which of the following is not a sign of bad fish? Choose one answer. a. off-odor b. elastic flesh c. gray or greenish gills d. sunken eyes

elastic flesh

Question 7 The major source of sulfur dioxides is: a. Natural erosion of soils b. Fuel combustion c. Industrial processing d. Road traffic

Fuel combustion

Question 90 Turbidity of water will a. Interfere with proper disinfection b. Harbor viruses c. Cause tastes and odor d. All of the above

All of the above

Question 62 Frequency of collection depends on a. quantity of waste b. time of year c. socioeconomic status of the area served d. all of the above

all of the above

Question 62 Marks: 1 An outline of a regional or area-wide planning study and report includes which of the following elements? Choose one answer. a. purpose and scope b. administration and financing c. the comprehensive regional plan d. all of the above

all of the above

Question 40 Marks: 1 Actions which do not individually or cumulatively have a significant effect on the human environment are categorically defined as Choose one answer. a. environmental impact b. cumulative impact c. environmental document d. categorical exclusion

categorical exclusion

Question 67 Sanitarians, environmental health scientists and other environmental specialists must obtain which of the following minimum educational requirements? a. An associate degree in environmental health b. An associate degree in science c. A baccalaureate degree d. A master's degree

A baccalaureate degree

Question 18 Marks: 1 When developing a preliminary or feasibility report, which of the following steps would generally not be included? Choose one answer. a. environmental impact study b. cost estimates c. construction plans d. methods of financing

construction plans

Question 39 The disposal of equipment and other materials containing PCBs a. is completed b. is unregulated c. will remain for a long time d. is not necessary

will remain for a long time

Question 34 Marks: 1 Long-term wind data of a given location are presented graphically in the form of a Choose one answer. a. wind rose b. wind table c. wind tree d. wind iris

wind rose

Question 21 Marks: 1 Minimum wash water temperature in a hospital laundry is Choose one answer. a. 146 to 150 degrees F b. 160 to 167 degrees F c. 170 to 178 degrees F d. 185 to 196 degrees F

160 to 167 degrees F

Question 45 The end of a waste pipe should terminate at least __ above the rim of a sink or receptacle directly connected to the drainage system. a. 2 inches b. 4 inches c. 5 inches d. 6 inches

2 inches

Question 37 How are total suspended particles measured? a. Flame photometry and weighing b. Gas filtration c. Flame ionization d. Collection and weighing

Collection and weighing

Question 48 Aeration is advantageous in the treatment of water containing: a. Phosphorus and manganese b. Dissolved iron and manganese c. Magnesium and iron d. Phosphorus and iron

Dissolved iron and manganese

Question 21 Sensitivity to radiation is probably highest: a. Just prior to pregnancy b. During fetal development c. During puberty d. During young adulthood

During fetal development

Question 18 Who establishes tolerance levels of pesticides? a. EPA b. FDA c. OSHA d. USDA

EPA

Question 39 Marks: 1 A vaccinated dog or cat bitten by or exposed to a rabid animal should be confined for 4 months or destroyed. Choose one answer. a. True b. False

False

Question 39 Marks: 1 Dry cotton ear plugs are just as effective against noise control as expensive fitted ear plugs and earmuffs. Choose one answer. a. True b. False

False

Question 11 Degradation of groundwater supplied by human-generated pollutants is generally the result of: a. Failure to cover the water supply b. Failure to adequately chlorinate the water c. Faulty waste disposal practices d. Allowing industry exceptions to safe water practices

Faulty waste disposal practices

Question 33 Have been known to cause crippling skeletal damage to cattle through ingested contaminated vegetation. a. Sulfides b. Fluorides c. Nitrates d. chlorides

Fluorides

Question 83 The termite shield is placed between the a. Foundation and the sill b. Footer and the foundation c. Joist and the header d. Stud and the header

Foundation and the sill

Question 7 For their drinking water supply, over 95% of all farm families depend on: a. Rivers b. Lakes c. Groundwater d. reservoirs

Groundwater

Question 26 Marks: 1 Background radiation cannot be eliminated. Choose one answer. a. True b. False

True

Question 26 Marks: 1 Urine is usually sterile, except for urinary schistosomiasis, typhoid, and leptospirosis carriers. Choose one answer. a. True b. False

True

Question 36 Marks: 1 The amount of sound energy a material can absorb is a function of its absorption coefficient at a specified frequency. Choose one answer. a. True b. False

True

Question 46 Chlorofluorocarbons increase the amount of ozone in atmosphere. a. True b. False

True

Question 7 Marks: 1 The frequency of a sound determines its pitch. Choose one answer. a. True b. False

True

Question 7 Marks: 1 The recommended backfill over the absorption field is 8 to12 inches. Choose one answer. a. True b. False

True

Question 88 Survey meters are usually read in roentgens or milliroentgens per hour. a. True b. False

True

Question 56 The most common form of cancer in women under age 30 is: a. Basal cell carcinoma b. Squamous cell carcinoma c. Malignant melanoma d. Breast cancer

Malignant melanoma

Question 2 The term "radioactivity" was "coined" by a. Wilheim Roentgen b. Henri Becquerel c. Henri Crookes d. Marie and Pierre Curie

Marie and Pierre Curie

Question 47 Which of the following chemicals that can be used for the disinfection of water does not provide a residual? a. Iodine b. Bromine c. Ozone d. Chloride

Ozone

Question 71 The term "frequency" cannot be described as a. Waves b. Particles c. Vibrations d. oscillations

Particles

Question 25 Marks: 1 Which of the following is (are) fundamental to the control of inorganic chemicals in drinking water? Choose one answer. a. sanitary survey b. identification of the sources c. determination of amounts of pollutants d. all of the above

all of the above

Question 26 Marks: 1 Relief from hay fever may be obtained by Choose one answer. a. moving to a pollen-free area b. acquired immunity c. air conditioning and air purification with appropriate filters d. all of the above

all of the above

Question 26 Marks: 1 The spread of ______ is (are) encouraged when uncooked garbage is fed to hogs Choose one answer. a. trichinosis to humans b. hog cholera c. vesicular exanthema in swine d. all of the above

all of the above

Question 28 Marks: 1 Hazardous wastes generated by vehicle maintenance shops include Choose one answer. a. heavy metal paint wastes b. ignitable wastes c. spent solvents d. all of the above

all of the above

Question 28 Marks: 1 The common types of radiation are Choose one answer. a. x-rays and gamma rays b. alpha and beta particles c. neutrons d. all of the above

all of the above

Question 28 Marks: 1 When considering a site for a sanitary landfill, both county and regional-wide planning and administration of the site should be considered because Choose one answer. a. it could result in shorter travel distances and a lower unit of cost for operation b. the results could be more efficient and a lower unit cost for operation c. there will be less citizen opposition and shorter travel distances d. all of the above

all of the above

Question 29 Marks: 1 Hazardous wastes may be in a ______ form. Choose one answer. a. solid b. liquid c. sludge d. all of the above

all of the above

Question 29 Marks: 1 The major potential entry sources of radon are Choose one answer. a. cracks in concrete floors b. floor drains c. drainage sumps d. all of the above

all of the above

Question 29 Marks: 1 The prevention of respiratory diseases in "vulnerable" individuals is to Choose one answer. a. protect people from the source b. eliminate routes of transmission c. reduce presence of susceptible individuals d. all of the above

all of the above

Question 3 Marks: 1 Sources of dioxin include ______. Choose one answer. a. wood preserved with PCPs b. paper mill bleached pulp and sludge c. bleached paper products d. all of the above

all of the above

Question 32 Marks: 1 A class II biological safety cabinet (BSC) is designed to protect Choose one answer. a. the work being done in the BSC b. the personnel using the BSC c. the environment d. all of the above

all of the above

Question 32 Marks: 1 A planning board's enforcement tools include Choose one answer. a. subdivision regulations b. zoning codes c. guidance of improvement programs d. all of the above

all of the above

Question 33 Marks: 1 The furnace temperature and burning rates of an incinerator can be controlled by adjusting Choose one answer. a. the amount of overfire air b. the amount of under fire air c. the forced draft fan d. all of the above

all of the above

Question 36 Marks: 1 The exposure of excreta or sewage on the surface of the ground sets the stage for disease transmission by both direct contact or Choose one answer. a. indirect contact b. vector c. vehicle or fomite d. all of the above

all of the above

Question 5 Marks: 1 A healthy milk herd is expected to be free of which disease(s)? Choose one answer. a. mastitis b. brucellosis c. tuberculosis d. all of the above

all of the above

Question 32 Marks: 1 A chemical commonly used to improve water clarity is Choose one answer. a. alum b. muriatic acid c. hydrogen chloride d. sodium carbonate

alum

Question 19 Of the following, the one classified as a compound is: a. aluminum b. ammonia c. nitrogen d. sulfur

ammonia

Question 77 The most accurate estimates of sewage flow are based on a. quarterly water-meter readings b. semiannual water-meter readings c. annual water-meter readings d. fixture units

annual water-meter readings

Question 51 The infection reservoir for arthropod-borne viral encephalitis is general accepted to be: a. horses b. humans c. birds d. fish

birds

Question 2 Marks: 1 Which of the following is (are) true about composting? Choose one answer. a. it has been a great success in the United States b. it may come from the organic fraction of municipal solid waste c. it results in a poor fertilizer d. both b and c above

both b and c above

Question 8 ___ is a satisfactory method for disinfecting water that is not grossly polluted. a. chlorination b. fluorination c. oxygenation d. CO, treatment

chlorination

Question 2 Which would not be considered suitable for disposal of sewage by subsurface means? a. loam b. gravel c. silt d. clay

clay

Question 70 Which one of the following is least likely to be occupationally exposed to mercury vapors: a. lab technicians b. farm workers c. machine operators d. plumbers

farm workers

Question 62 Marks: 1 Halon-1301 is used primarily in ______. Choose one answer. a. portable fire suppression systems b. fixed fire suppression systems c. precision cleaning processes d. plastic foam blowing

fixed fire suppression systems

Question 68 The tissues most often damaged as result of inorganic mercury entering the body include all of the following except: a. brain b. heart c. kidney d. liver

heart

Question 55 Which one of the following conditions is not a specifically identified health damaging effect of lead in the human body? a. sterility b. heart attack c. miscarriage d. liver damage

heart attack

Question 6 Which of the following factors would LEAST contribute to the emergence of a new infectious disease? a. human behavior b. heat disinfection c. antibiotic use d. disinfectant use

heat disinfection

Question 22 It is most likely that the greatest temperature increases as a result of global warming will occur in: a. high latitude regions of northern hemisphere b. mid-latitude regions of the world c. southern latitude regions of the northern hemisphere d. near the polar cap of the southern hemisphere

high latitude regions of northern hemisphere

Question 16 The approved method of disposing of PCBs is: a. dealing them in barrels and burying them in landfills b. high-temperature incineration c. detoxification and discharge into deep ocean valleys d. biodegrading them, sealing them and using them as fill

high-temperature incineration

Question 19 Marks: 1 Nosocomial infections are a recurring problem in Choose one answer. a. food establishments b. hospitals c. swimming pools d. health spas

hospitals

Question 51 Marks: 1 Acidic conditions ______ the growth of methane-producing bacteria. Choose one answer. a. increase b. inhibit c. do not affect d. none of the above

inhibit

Question 8 Marks: 1 What is the minimum period of wash time for a single-tank conveyer dishwashing machine? Choose one answer. a. 10 seconds b. 25 seconds c. 20 seconds d. 15 seconds

15 seconds

Question 32 "Earth Day" began in: a. 1965 b. 1970 c. 1975 d. 1980

1970

Question 49 The major target for damage associated with ultraviolet radiation is: a. Cellular DNA b. The skin c. The eyes d. The liver

Cellular DNA

Question 20 The first major recorded episode of air pollution that produced human casualties occurred in: a. Meuse River Valley, Belgium b. London, England c. Los Angeles, CA d. Donora, PA

Donora, PA

Question 84 Lasers emit a. Mechanical radiation b. Ionizing radiation c. Electromagnetic radiation d. None of the above

Electromagnetic radiation

Question 11 The "hole in the sky" was first found over: a. The US b. Russia c. The South Pole d. Europe

The South Pole

Question 42 Marks: 1 Bats serve a useful purpose by keeping down the number of insects. Choose one answer. a. True b. False

True

Question 72 The major damage that results from exposure to organic mercury is to the: a. kidneys b. heart c. lungs d. brain

brain

Question 87 Which food has the highest acceptable plate count of E coli? a. cheese b. unfrozen beef c. chicken d. fish

cheese

Question 33 Marks: 1 Which of the following is not a commonly accepted method or device to prevent backsiphonage? Choose one answer. a. vacuum breakers b. cross-connections c. air gap separation d. back pressure units

cross-connections

Question 42 Which of the following disease is not insect-borne: a. diphtheria b. encephalitis c. bubonic plague d. tularemia

diphtheria

Question 18 Concern over increased carbon dioxide levels in the atmosphere revolve around issues of a. human health b. air pollution c. plant destruction d. global temperature

global temperature

Question 45 Weil's disease is also known as: a. yellow fever b. epidemic c. leptospirosis d. none of the above

leptospirosis

Question 50 Marks: 1 Ozone reduces the useful life of all of the following except Choose one answer. a. rubber b. textiles c. dyes d. nylon

nylon

Question 48 The disease that is common to stone age spearhead markers, hard rock miners and sand blast operators is: a. typhoid fever b. silicosis c. black lung d. echinococcosis

silicosis

Question 9 Marks: 1 The annual cost attributable to foodborne illnesses in the United States is estimated to be Choose one answer. a. $1.2 million to $5 million per year b. $5 trillion per year c. $1 billion to $10 billion per year d. $10 billion to $80 billion per year

$10 billion to $80 billion per year

Question 23 What is the minimum period of time that the FDA recommends employees wash their hands and arms up to the elbow? a. 10 seconds b. 20 seconds c. 30 seconds d. 40 seconds

20 seconds

Question 65 Concentrations of less than __ pollen grains/m3 of air in a 24-hour period usually do not produce allergic reactions a. 25 b. 33 c. 100 d. 1000

33

Question 100 Shucked shellfish must be stored at __ or less. a. 40F b. 42F c. 47F d. 32F

40F

Question 2 Which one of the following enter directly into biological processes? a. Nitrogen b. Argon c. Carbon dioxide d. Helium

Carbon dioxide

Question 10 Which one of the following is most dangerous to humans who have heart problems? a. Sulfur dioxide b. Carbon monoxide c. Nitrogen oxide d. Carbon dioxide

Carbon monoxide

Question 80 When footers fail this often results in: a. Leaky roofs b. Warped studs c. Twisted joist d. Cracked and/or displaced foundations

Cracked and/or displaced foundations

Question 85 Microwave ovens use which of the following energy sources? a. Mechanical b. Electromagnetic c. Ultraviolet d. Radio waves

Electromagnetic

Question 47 "Acid Rain" was first identified in: a. The US b. Sweden c. England d. Germany

England

Question 1 Marks: 1 The precise levels at which specific air pollutants become a health hazard are relatively easy to establish by existing surveillance systems. Choose one answer. a. True b. False

False

Question 10 Marks: 1 Household hazardous waste is regulated like any other hazardous waste. Choose one answer. a. True b. False

False

Question 102 A water system serving one apartment building with three apartments, having a total of six residents is a Public Water Supply (PWS)? a. True b. False

False

Question 32 The presence of bacteria responsible for typhoid fever in a public water supply could be traced to: a. Fecal contamination b. Excessive water aeration c. Pus from skin lesions d. Rotting animal and fish remains

Fecal contamination

Question 13 Marks: 1 The voluntary federal-state program designed to ensue a safe and clean milk supply is commonly referred to as the Choose one answer. a. IMS b. FDAVP c. PHSVFSP d. VFS

IMS

Question 99 In a test conducted in North Carolina by the PHS in sandy soil, sewage organisms traveled a. Only 10 feet b. 450 feet c. In excess of 200 feet d. 1200 feet

In excess of 200 feet

Question 66 A negative pressure fit test for a protective mask: a. Is done by placing both palms against the intake filters b. Is done by placing both hands over the exhalation points c. Should be conducted at a minimum of once a week d. Should be repeated until an air leak is detected

Is done by placing both palms against the intake filters

Question 44 The only country in the world to compensate victims of air pollution is: a. Canada b. Sweden c. Germany d. Japan

Japan

Question 77 "MPD" is the abbreviation for a. Maximum person dosimeters b. Maximum permissible dose c. None of the above d. Minimum permissible dose

Maximum permissible dose

Question 29 Marks: 1 An EIS is required by ______, when the EA indicates significant impact to the Environment. Choose one answer. a. EPA b. NEPA c. HUD d. USDA

NEPA

Question 19 Marks: 1 Dealers involved in interstate shipment and control of shellfish must meet the requirements set forth by Choose one answer. a. FDA b. USDA c. NSSP d. CDC

NSSP

Question 1 The major constituent of the atmosphere today is: a. Carbon monoxide b. Nitrogen c. Oxygen d. argon

Nitrogen

Question 58 The control of bloodborne pathogens is regulated by a. OSHA b. USDA c. NIH d. CDC

OSHA

Question 3 Marks: 1 Escherichia coli 0157:H7 was first identified as a pathogen during the investigation of two outbreaks in what two states? Choose one answer. a. Washington and Illinois b. Minnesota and Kentucky c. Texas and Iowa d. Oregon and Michigan

Oregon and Michigan

Question 32 Injury to plants due to __ shows up as flecks, stipple and bleaching, tip burns on conifers and growth suppression. a. Ozone b. Peroxyacyl nitrates c. Hydrogen fluoride d. Sulfur dioxide

Ozone

Question 70 What should be done after the project is an ongoing program? a. Go to the next problem b. Have a cost analysis done c. Reevaluate goals and objectives; refine program d. Analyze collection of consideration factors

Reevaluate goals and objectives; refine program

Question 5 Most ultraviolet radiation in sunlight is absorbed by the ozone layer as it passes through the: a. Troposphere b. Stratosphere c. Mesosphere d. tropopause

Stratosphere

Question 86 Biological safety equipment includes a. Biosafety cabinets b. Needles and syringes c. Disinfecting chemicals d. Technical manuals

Technical manuals

Question 1 Marks: 1 In many cases, x-ray beams or fluoroscopes will extend past the fluoroscopic screen and protective lead, thereby exposing the operator to the direct beam. Choose one answer. a. True b. False

True

Question 10 Marks: 1 Carbon 14, a radioactive isotope of carbon, has a half-life of almost 6000 years. Choose one answer. a. True b. False

True

Question 67 Any person bitten by a bat should receive antirabies therapy unless the bat is caught and found to be negative for the rabies virus. a. True b. False

True

Question 9 Marks: 1 Food poisoning from Staphylococcus aureus can be prevented by thoroughly cooking foods that have been properly handled and then through appropriate time temperature control of the finished product. Choose one answer. a. True b. False

True

Question 30 Marks: 1 Communities that desire to maintain the character of the community without overtaxing its members should Choose one answer. a. develop zoning regulations b. develop higher taxes on community organizations c. encourage the development of vacant land served by existing public services d. a and c above

a and c above

Question 6 Marks: 1 A biohazard is Choose one answer. a. any material that negatively impacts a biological organism b. a material of biological composition, especially if infective, that constitutes a threat to humans or their environment c. a chemical that constitutes a threat to man or his environment d. any virus that causes fatal disease

a material of biological composition, especially if infective, that constitutes a threat to humans or their environment

Question 45 Marks: 1 Septage is best defined as Choose one answer. a. sludge b. scum c. gray water d. a mixture of all of the above

a mixture of all of the above

Question 46 Eastern equine encephalitis is a. a viral disease b. a ricketettsial disease c. most often transmitted man to man d. a bacterial disease

a viral disease

Question 5 The major source of excessive community noise is: a. industry b. airports c. urban traffic d. building construction

airports

Question 11 Why is it a good practice to paint 6 inch wide white lines along walls inside a warehouse? a. aids in detection of insects b. aids in detection of rodents c. serves as a reminder not to stock material next to the wall d. all are correct

all are correct

Question 13 Marks: 1 Improper use of chemicals or improperly balanced pool or beach water may cause the spread of infectious disease due to Choose one answer. a. removal of protective coatings of mucous on tissue b. irritation of skin c. living organisms in the water d. all of the above

all of the above

Question 20 Marks: 1 The temperature of the gases leaving the furnace is reduced by Choose one answer. a. spraying with water b. dilution with cool air c. passing through heat exchanges d. all of the above

all of the above

Question 25 Marks: 1 Loam is composed of which of the following? Choose one answer. a. sand b. gravel c. silt d. all of the above

all of the above

Question 35 Toxicity priority pollutants include a. arsenic b. cadmium c. vinyl chloride d. all of the above

all of the above

Question 42 Marks: 1 A "vision" is a term used in strategic planning to represent the Choose one answer. a. desired future state b. where the organization wants to be in 5 years c. the new organizational mission d. all of the above

all of the above

Question 44 Marks: 1 Volume reduction can be achieved by Choose one answer. a. baling b. landfill equipment c. pulping d. all of the above

all of the above

Question 56 Marks: 1 A principle(s) for effecting external radiation protection is (are) Choose one answer. a. distance b. time of exposure c. shielding d. all of the above

all of the above

Question 94 Which of the following would be a cause of septic-tank failure? a. lack of routine cleaning of the septic tank b. leaking plumbing fixtures c. improper design and construction of the absorption system d. all of the above

all of the above

Question 95 Milk is considered pasteurized by the Federal Drug Administration if it reaches a. 145F (63C) for 30 minutes b. 194F (90C) for 0.5 seconds c. 212F (100C) for 15 seconds d. all of the above

all of the above

Swimming pools receive fecal waste, urine, dead tissue, saliva, mucous from the nose, sweat and pollution and contaminates from the surrounding environment. This emphasizes the importance of proper swimming pool design including a. recirculation b. filtration and proper disinfection c. proper operation d. all of the above

all of the above

Question 11 Marks: 1 Self-imposed health risk factors include Choose one answer. a. exposure to sunlight b. diet c. smoking d. all the above

all the above

Question 25 Which will cause taste and odor in water supplies? a. coke oven emissions b. oil refinery wastes c. algae d. all the above

all the above

Question 90 The quality of milk reaching the ultimate consumer is largely determined a. at the plant, where processing and handling occurs b. at the farm, where the milk is processed c. by the USDA through stringent testing and laboratory analysis d. by the FDA in accordance with Federal regulations

at the farm, where the milk is processed

Question 24 Marks: 1 Resource recovery and reduction of solid wastes should start Choose one answer. a. at the point of generation b. at the sanitary landfill c. in the home d. at the transfer station

at the point of generation

Question 21 Imhoff tanks used for sewage disposal are primarily dependent upon the action of: a. bacterial decomposition b. high temperatures c. chemical disinfectants d. water dilution

bacterial decomposition

Question 3 The __ is usually involved in dealing with major disasters. a. American Legion b. Federal Emergency Management Agency c. Red Cross d. both b and c

both b and c

Question 11 Which of the following would most likely contain the highest proportion of PCBs? a. perch b. sunfish c. brook trout d. chinook salmon

chinook salmon

Question 11 Marks: 1 Neutralization and detoxification are feasible with most of the organophosphate and carbamate insecticides, but not with the ______. Choose one answer. a. chlorinated hydrocarbons b. acids c. bases d. all of the above

chlorinated hydrocarbons

Question 19 The statement "dioxin is the most toxic of all man-made chemicals" is somewhat misleading because of the testing done on: a. rats b. guinea pigs c. hamsters d. mice

guinea pigs

Question 23 Which one of the following is not a potential impact of global warming? a. increased crop yield, particularly of citrus fruits b. loss of biodiversity c. the sea level is likely to rise d. human morbidity and mortality rates are liable to rise

increased crop yield, particularly of citrus fruits

Question 45 An arthropod-borne disease is spread by: a. man b. snails c. insects d. air

insects

Question 94 The pipeline milker a. was first introduced in 1854 and is still used today b. is vastly inferior to Branigien's Quadra-Path Sterilizer c. was a welcome improvement to Branigien's so called "sterilizer" d. requires special attention to ensure its sanitary condition

requires special attention to ensure its sanitary condition

Question 33 The disease most likely to be transmitted to restaurant customers as a result of the presence of rats in the food prep area is: a. plaque b. tularemia c. salmonellosis d. rat bite fever

salmonellosis

Question 86 A watertight tank designed to slow down the movement of raw sewage and wastes passing through to the soils is known as a a. pit privy b. spring house c. septic tank d. grease trap

septic tank

Question 17 Which is not considered a single dose rodenticide? a. ANTU b. strychnine c. red squill d. warfarin

warfarin

Question 47 Which of the following statements is not true about poliomyelitis a. there are three viral types most commonly associated with the paralytic illness b. the virus is found both in the oral secretions and feces of infected persons c. paralytic type of polio is often due to the bite of the wood tick d. the use of vaccines has markedly decreased the incidence of polio

paralytic type of polio is often due to the bite of the wood tick

Question 17 Marks: 1 Glazing, silvering, or bronzing on the underside of a leaf is evidence that injury has occurred by Choose one answer. a. ozone b. peroxyacyl nitrates c. sulfur dioxide d. hydrogen fluoride

peroxyacyl nitrates

Question 58 Marks: 1 Which term is used to describe the exposure of large populations to ionizing radiation? Choose one answer. a. person-rem b. gamma-rem c. radiation-rem d. quantum-rem

person-rem

Question 28 The one of the following which is ordinarily not used as a fumigant: a. ethylene oxide b. hydrogen cyanide c. methyl bromide d. phosphorus pentoxide

phosphorus pentoxide

Question 67 A potential source of mercury exposure that could remain for years is from: a. the chior-alkali industries b. stored containers of paint produced prior to 1990 c. emissions from battery manufacturing d. continued use of mercury in dental practice

stored containers of paint produced prior to 1990

Question 7 Which pH could cause the least eye irritation? a. 7 b. 7.6 c. 8.2 d. 6.8

7.6

Question 43 The ASHRAE recommended minimal thermal standard for dwelling is __F at 40% humidity and an air circulation rate of 45 fpm. a. 57F b. 60F c. 68F d. 76F

76F

Question 37 The pH of a solution in which the apparent hydrogen ion concentration is equal to 1 x 10-8 moles per liter is: a. 2 b. 4 c. 6 d. 8

8

Question 78 Marks: 1 A special engineering study is required for slopes with an incline greater than Choose one answer. a. 8 percent b. 6 degrees c. 8 degrees d. 4 percent

8 percent

Question 3 Marks: 1 A lump of soil with good characteristics will break apart with little pressure along definite cleavage plains and should be blue or grayish in color. Choose one answer. a. True b. False

False

Question 30 Marks: 1 Radioactive substances used in medicine are always sealed. Choose one answer. a. True b. False

False

Question 31 Marks: 1 Sources of x-rays that operate at a voltage above 10 kilovolts are less hazardous than sources less than 10 kV. Choose one answer. a. True b. False

False

Question 31 Marks: 1 The poison found in poison ivy, oak, and sumac is extremely volatile. Choose one answer. a. True b. False

False

Question 44 Viral hepatitis B (HBV) is most often associated with: a. Contaminated dairy products b. Uncooked shellfish c. Administration of blood products d. Fecal contamination of water

Administration of blood products

Question 43 A major concern associated with Chernobyl style nuclear reactors is: a. The technology used to develop them was not good b. Accidental radioactive releases would be sent directly into the atmosphere c. The water used to cool them is already contaminated d. They have no way to decontaminate the materials that emerge as waste products

Accidental radioactive releases would be sent directly into the atmosphere

Question 14 The majority of the world's water is used in: a. Households b. Industry c. Agriculture d. Sewage disposal

Agriculture

Question 28 Which conditions indicate organic stream pollution? a. Water has foul odor and is turbid b. Fish counts decrease or disappear c. Increase in worms and snails d. All the above

All the above

Question 73 Ozone is effective against a. Amoebic cysts b. Bacteria and phenols c. Viruses d. All the above

All the above

Question 58 Which one of the following metals is most fatal to fish when it becomes dissolved in acid waters? a. Manganese b. lead c. Aluminum d. zinc

Aluminum

Question 91 The presence of which of the following elements in water treatment plant effluent is used as a measure of filtration efficiency? a. Copper b. Aluminum c. Zinc d. lead

Aluminum

Question 62 Absorption of microwave energy by bodily tissues is largely associated with the: a. Frequency of the microwaves b. Distance of the tissue from the source of the microwaves c. Amount of water content of the tissue d. Basic source of the microwave emission

Amount of water content of the tissue

Question 45 What is the most effective practice for preventing trichinosis in people? a. Be certain that ground meat is freshly ground at the time of purchase b. Be sure that pork is thoroughly cooked c. Avoid the consumption of ground meat products d. Cook steak until well done

Be sure that pork is thoroughly cooked

Question 41 Marks: 1 Lead shielding devices are not necessary for chest or upright x-rays. Choose one answer. a. True b. False

False

Question 42 PCB waste collected from households is exempt from disposal regulations. a. True b. False

False

Question 43 Marks: 1 Every 1,000 new people in a community will require 1,000,000 extra gallons of water per year. Choose one answer. a. True b. False

False

Question 65 The highest home radon concentration levels are most likely to be found in: a. Upstairs halls b. Dining areas c. Basements d. Near windows

Basements

Question 44 Household hazardous waste disposal bids should be evaluated solely on the basis of price. a. True b. False

False

Question 11 In domestic water well supplies, which two elements cause most hardness? a. Zn and Mg b. Na and Mg c. Ca and Mg d. Ca and Na

Ca and Mg

Question 62 The concept of utility companies brokering government-assigned allowances for sulfur dioxide emission is called: a. Integrated gasification confrontation b. Cap & trade c. Emission bartering d. Desulfurization compromise

Cap & trade

Question 42 The defense in depth concept that is used in constructing nuclear plants is: a. Characterized by repeated layers of thick shielding materials b. Based on the assumption that accidents will seldom happen with the plants c. Designed to prevent explosions in case of an accident d. Designed to keep fissionable materials from coming in contact with each other in case of accidents

Characterized by repeated layers of thick shielding materials

Question 33 Information and advice on what to do with hazardous waste when spilled in a transportation accident is available 24 hours a day from the a. RCRA/Superfund hotline b. Chemical Emergency Center (CHEMTREC) c. EPA administrator d. none of the above

Chemical Emergency Center (CHEMTREC)

Question 50 FCs are widely used because of their a. Chemical stability b. Cost c. High toxicity d. Atmosphere lifetime

Chemical stability

Question 28 Which one of the following is false? a. Nearly ¾ of the states, any doctor or dentist can purchase X-ray equipment b. Use of medical X-rays is a double edged sword c. Children should have routine dental X-rays as part of screening programs d. Physicians may order unnecessary X-rays as self-preservation

Children should have routine dental X-rays as part of screening programs

Question 71 Rats have an extremely keen sense of sight but very poor taste and smelling ability. a. True b. False

False

Question 27 What type of well is considered least likely to become contaminated? a. Drilled b. Bored c. Driven d. dug

Drilled

Question 13 Marks: 1 Sound absorbing materials absorb low frequency sounds much more effectively than high frequency sounds. Choose one answer. a. True b. False

False

Question 14 Marks: 1 The state or federal regulatory agency with jurisdiction should never be consulted when conducting a suitability audit of a waste disposal company. Choose one answer. a. True b. False

False

Question 49 What is the most important rule of food storage? a. Follow the first in, first out rule b. Store products in order of pull by date c. Repackage dry foods into metal containers d. Store canned goods under refrigeration

Follow the first in, first out rule

Question 81 What does it mean when a body of water has a high JTU? a. It has a low amounts of organic matter b. It has no bacteria c. No one is swimming at this time d. It has high turbidity

It has high turbidity

Question 8 Which one of the following is not a characteristic of groundwater? a. Most bacteria are absent b. Evaporation is virtually non-existent c. It is less expensive to treat than surface water d. It is more expensive to access than surface water

It is more expensive to access than surface water

Question 77 A footing drain is required to: a. Control moisture b. Eliminate radon c. Keep a foundation from slipping d. Keep the feet dry while pouring concrete

Keep a foundation from slipping

Question 42 A major problem that is thwarting efforts to clean up the air is: a. Lack of interest in the programs b. Lack of routine air quality monitoring in developing nations c. Lack of governmental agreement as the quality standards d. Economic policies preclude working on air quality issues

Lack of routine air quality monitoring in developing nations

Question 53 The general type of subsurface formation in which groundwater contamination is likely to travel the farthest is: a. Clay b. Granite c. Limestone d. gravel

Limestone

Question 12 The greatest exposure to human made ionizing radiation for most individuals is through: a. Eating plants that contain radioactive elements b. Medical x-rays c. Nuclear power plant emissions d. Building made of stone

Medical x-rays

Question 70 The main function of a sand filter is to: a. Remove tastes and odors b. Remove suspended solids c. Remove dissolved material d. Remove bacteria

Remove suspended solids

Question 50 The major concern related to ultraviolet radiation within humans is with: a. Liver cancer b. Cataracts c. Skin cancer d. Reproductive organ cancer

Skin cancer

Question 29 Microbial pollution travels only a short distance through: a. Sandstone b. Smooth clay c. Fissured rock d. limestone

Smooth clay

Question 48 An inspector's choice of embargo, seizure or condemnation should be based on: a. The political power of the owner and informal agency policy b. The inspector's preference c. Statutory authority and immediacy of risk d. Cost of items and epidemiological history

Statutory authority and immediacy of risk

Question 29 Major effects on humans are caused by Los Angeles and London type smog, along with what two pollutants? a. Sulfur dioxide and hydrogen fluoride b. Sulfur dioxide and carbon monoxide c. Hydrogen sulfide and peroxacyl nitrates d. Ozone and nitrogen dioxide

Sulfur dioxide and hydrogen fluoride

Question 74 A hydraulic ram is used to elevate a quantity of water to a higher elevation. Rams are powered by a. Wind b. Electricity c. Water d. heat

Water

Question 6 The highest PCB concentrations documented in the US are in: a. New York b. The Hudson River c. Waukegan Harbor d. Lake Michigan

Waukegan Harbor

Question 54 The presence of coliform in water indicates: a. The presence of pathogens b. The presence of fecal viruses c. The possible presence of pathogens d. The presence of sewage

The possible presence of pathogens

Question 23 Marks: 1 Coliform, on soil surfaces, may survive up to 38 days. Choose one answer. a. True b. False

True

Question 33 Marks: 1 Bat-proofing should not be conducted from May through August because baby bats can be trapped inside. Choose one answer. a. True b. False

True

Question 35 Marks: 1 Radon is an alpha emitter; daughter decay products are alpha, beta, and gamma emitters. Choose one answer. a. True b. False

True

Question 48 Marks: 1 Comprehensive community planning attempts to take an overall look at the total region. Choose one answer. a. True b. False

True

Question 5 Marks: 1 The recommended maximum length of the system materials for a gravity flow absorption field is 75 feet. Choose one answer. a. True b. False

True

Question 5 Marks: 1 The terms "washout" and "rainout" both refer to a cleansing process of pollutants in the atmosphere. Choose one answer. a. True b. False

True

Question 52 Marks: 1 Air pollutants may be in the form of microorganisms. Choose one answer. a. True b. False

True

Question 34 Animals are primarily affected by the pollutants in the air a. Through ingesting vegetation b. By inhaling pollution c. By consuming contaminated water d. By consuming highly toxic food and water

Through ingesting vegetation

Question 66 Marks: 1 Gamma rays come from the nucleus of an atom; x-rays come from the electrons around the nucleus and are produced by electron bombardment. Choose one answer. a. True b. False

True

Question 67 Marks: 1 Biological effects of radiation on all living organisms, including human beings, are termed somatic or genetic. Choose one answer. a. True b. False

True

Question 34 The fissionable fuel in all US nuclear reactors is: a. Plutonium b. Thorium c. Uranium d. tritium

Uranium

Question 53 Pediculosis is an infestation of a. chiggers b. mites c. lice d. roaches

lice

Question 39 Marks: 1 The amount of residue left after incineration is approximately Choose one answer. a. 10 to 15 percent of the original volume b. 25 to 50 percent of the original volume c. 55 to 65 percent of the original volume d. none of the above

10 to 15 percent of the original volume

Question 16 Marks: 1 Gas chlorine is considered Choose one answer. a. 50 percent available chlorine b. 75 percent available chlorine c. 100 percent available chlorine d. 92 percent available chlorine

100 percent available chlorine

Question 11 Maximum sensitivity to sound for humans is in the range of a. 500-1000 cps b. 1000-5000 cps c. 5000-10000 cps d. 10000-15000 cps

1000-5000 cps

Question 53 Marks: 1 A jet pump will lift water a maximum of Choose one answer. a. 500 feet b. 120 feet c. 33.9 feet d. 15 feet

120 feet

Question 85 The distance between the end of the water supply pipe and the sink should be how many times the diameter of the supply pipe? a. 1-1/2 b. 2 c. 3 d. 4

2

Question 28 The only way the atmospheric carbon dioxide level would not continue to increase would be slash emissions to: a. 40% of their 1990 levels. b. 50% of their 1990 levels c. 60% of their 1990 levels d. 70% of their 1990 levels

60% of their 1990 levels

Question 7 Marks: 1 The EPA requires that dioxin-bearing wastes be ______ destroyed or reduced before disposal in a secure hazardous waste landfill. Choose one answer. a. 99.99 percent b. 95.00 percent c. 99.9999 percent d. 0.05 percent

99.9999 percent

Question 46 Marks: 1 Which state has a quarantine on mussels from May 1 to October 31? Choose one answer. a. Florida b. California c. Louisiana d. New York

California

Question 48 What is the primary requirement in designing a food service facility? a. Durability b. Cleanability c. Appearance d. Convenience

Cleanability

Question 25 Marks: 1 Oyster-shell stock or shucked oysters sampled at the source should not have MPNB of ______ or more fecal coliform per 100 grams of shellfish. Choose one answer. a. 240 b. 230 c. 235 d. 250

230

Question 20 Workers involved in waste operations at hazardous waste TSD facilities are required to receive at least __ of training before working in hazardous waste operations. a. 16 hours b. 24 hours c. 4 hours d. none of the above

24 hours

Question 6 Detention time for septic tanks should be not less than a. 8 hours b. 12 hours c. 24 hours d. 36 hours

24 hours

Question 9 Marks: 1 The detention time for wastewater in a septic tank is recommended to be Choose one answer. a. 6 to 12 hours b. 24 to 72 hours c. 1 week d. none of the above

24 to 72 hours

Question 22 The hearing ability of a fetus is well-developed by the: a. 18th week of gestation b. 22nd week of gestation c. 26th week of gestation d. 28th week of gestation

28th week of gestation

Question 56 Marks: 1 Sandwich and salad mixtures should be placed in shallow pans at a depth not greater than ______ to accelerate the rapid cooling of the food. Choose one answer. a. 3 inches b. 2 inches c. 5 inches d. 8 inches

3 inches

Question 45 Marks: 1 Adequate light is essential for proper operation, maintenance, and sanitation. A minimum of ______ is recommended on food work surfaces. Choose one answer. a. 5-foot candles b. 20-foot candles c. 30-foot candles d. 50-foot candles

50-foot candles

Question 27 Regulation of drinking water additives is the responsibility of: a. FDA b. EPA c. Dept of Labor d. PHS

EPA

Question 42 Lime coagulation, mixed media filtration, and activated carbon filtration will greatly reduce a. Heavy metals b. Biological contaminants c. EPA priority pollutants d. EPA listed hazardous waster

EPA priority pollutants

Question 54 Marks: 1 If the radioactivity of a material is not known, the half-life cannot be determined. Choose one answer. a. True b. False

False

Question 55 Marks: 1 Long term effects of radiation on an individual are predictable. Choose one answer. a. True b. False

False

Question 56 Marks: 1 The concentration resulting from a continuous emission of a pollutant is directly proportional to wind speed. Choose one answer. a. True b. False

False

Question 6 Marks: 1 The cancer rate is roughly 72% higher for inner-city people than the level for suburbanites. Choose one answer. a. True b. False

False

Question 46 Communicable diseases such as typhoid fever, cholera, shigellosis, and infectious hepatitis are most commonly transmitted by the: a. Vector-borne route b. Respiratory route c. Direct contact volume d. Fecal/oral or vehicle-borne route

Fecal/oral or vehicle-borne route

Question 88 The government organization that usually deals with major disasters is the a. American Legion b. Federal Emergency Management Agency (FEMA) c. Red Cross d. Disaster Response Agency

Federal Emergency Management Agency (FEMA)

Question 43 The pitch of a sound is determined primarily by a. Frequency b. Wavelengths c. Sound pressure d. All of the above

Frequency

Question 14 Which organism is not known as an iron bacteria? a. crenothrix b. Giardia lambia c. gallionella d. leptothrix

Giardia lambia

Question 80 The term "half-value layer" (HVL) is used to designate the thickness of a particular material that will reduce, by one-half, the intensity of radiation passing through the material. Beta radiation is commonly eliminated by a. Lead b. Concrete c. Glass or plastic d. aluminum

Glass or plastic

Question 22 Air monitoring shall be conducted in order to ensure proper selection of a. engineering controls b. work practices c. personal protective equipment d. all of the above

all of the above

Question 28 Diatomaceous earth filters: a. Should be supplemented by a chlorination system b. Should be integrated into a rapid sand filtration system c. Can be used for a public water treatment system d. Cane be used in a public sewer treatment system

Should be supplemented by a chlorination system

Question 25 Perhaps the first indication of the health problems associated with exposure to ionizing radiation were the result of a high incidence of a. Fetal deaths b. Cardiovascular disease c. Skin cancers d. Benign tumors

Skin cancers

Question 42 Which of the following compounds would not contribute to water hardness? a. Calcium sulfate b. Magnesium sulfate c. Calcium chloride d. Sodium chloride

Sodium chloride

Question 50 The liquid form of chlorine used for emergency disinfection of small volumes of a. Calcium hypochlorite b. Sodium hypochlorite c. Bromium hypochlorite d. Potassium hypochlorite

Sodium hypochlorite

Question 13 In the United States, saltwater intrusion into depleted aquifers is becoming a problem in: a. Texas b. Southern California c. North Carolina d. Louisiana

Southern California

Question 50 Marks: 1 The National Environmental Policy Act (NEPA) of 1969 made it the responsibility of the Federal Government to use all practical means to coordinate ______ to encourage harmony between man and his/her environment. Choose one answer. a. federal plans b. federal functions c. federal programs d. all of the above

all of the above

Question 56 Marks: 1 The degree of eutrophication of a lake is indicated by Choose one answer. a. the quantity of planktonic algae b. reduced water transparency c. dissolved oxygen in the water near the surface d. all of the above

all of the above

Question 30 In terms of health problems associated with ionizing radiation, perhaps the most prudent way to safeguard public health is to: a. Limit the development of nuclear power plants b. Require specific documentation of all medical X-rays c. Limit the number of medical X-rays allowed a person d. Subscribe to the linear dose-response curve

Subscribe to the linear dose-response curve

Question 28 Which component of clean, dry air has the smallest volume? a. Carbon monoxide b. Nitrogen dioxide c. Ammonia d. Sulfur dioxide

Sulfur dioxide

Question 63 In business districts, refuse, including garbage from hotels and restaurants, should be collected daily, except on a. Sundays b. Saturdays (usually the busiest days) c. Mondays d. Saturdays and Sundays

Sundays

Question 106 Any time a MCL is exceeded the NTNCWA must give notice by continuous posting in a conspicuous location within the area served by the water system. a. True b. False

True

Question 11 Marks: 1 A deterioration in the ozone layer of the stratosphere can cause an increase in ultraviolet radiation reaching the earth. Choose one answer. a. True b. False

True

Question 11 Marks: 1 Black flies are disease vectors for onchocerciasis. Choose one answer. a. True b. False

True

Question 12 Marks: 1 A household hazardous waste management program draws much of its strength from informed and concerned citizens. Choose one answer. a. True b. False

True

Question 13 Marks: 1 Household hazardous waste is not exempt from DOT regulations when shipped to a disposal facility. Choose one answer. a. True b. False

True

Question 14 Marks: 1 Tularemia is often transmitted to humans by handling rodents, rabbits, and muskrats. Choose one answer. a. True b. False

True

Question 15 Marks: 1 A CT scanner is a combination computer and x-ray machine. Choose one answer. a. True b. False

True

Question 16 Marks: 1 A permanent facility for collecting and storing household waste should be located away from residential areas and places of public gathering. Choose one answer. a. True b. False

True

Question 16 Marks: 1 Some of the prime sources of Giardia lamblia cysts are humans, beavers, muskrats, and domestic animals. Choose one answer. a. True b. False

True

Question 17 Marks: 1 Medical uses can present a hazard to technicians, patients, and others through the improper handling of radionuclides and contaminated wastes. Choose one answer. a. True b. False

True

Question 19 Marks: 1 "R" is the symbol used for the term "roentgen". Choose one answer. a. True b. False

True

Question 21 Marks: 1 Well-placed, existing solid waste collection areas are good choices for household hazardous waste collection sites. Choose one answer. a. True b. False

True

Question 22 Marks: 1 Items such as tennis balls, golf balls, gloves, and auto tires that come into contact with poison ivy, oak, and sumac may spread the poison as well as physical contact with the plants. Choose one answer. a. True b. False

True

Question 22 Marks: 1 Medical personnel involved in radium therapy can become unnecessarily exposed during handling of the source needle. Choose one answer. a. True b. False

True

Question 23 Marks: 1 Yellow jackets usually build their nests below the ground. Choose one answer. a. True b. False

True

Question 27 Marks: 1 The effective half-life of an injected radionuclide is determined by the length of time the nuclide remains in the body and its radioactive half-life. Choose one answer. a. True b. False

True

Question 30 Marks: 1 Vector-borne encephalitidies have replaced malaria as the major mosquito-borne disease in North America. Choose one answer. a. True b. False

True

Question 35 Marks: 1 Transportation is the largest source of air pollution. Choose one answer. a. True b. False

True

Question 4 Marks: 1 A filter of 2 mm of aluminum will absorb the soft, or less penetrating, radiation. Choose one answer. a. True b. False

True

Question 40 Marks: 1 Observations and cost-effective analyses have shown that good housing and sanitation are far more effective measures for the control of cholera, typhoid, and similar diseases than is immunization. Choose one answer. a. True b. False

True

Question 46 Marks: 1 Stack samples must be collected at the same speed of flow that gases normally pass through the stack. Choose one answer. a. True b. False

True

Question 65 It is believed that the ingestion of one virus CFU can cause infection in humans. a. True b. False

True

Question 68 The World Health Organization considers DDT irreplaceable in public health at the present time for control of the some of the most important vector-borne diseases of humans. a. True b. False

True

Question 69 In accordance with Food Additive Regulations, a pesticide added intentionally or incidentally to a processed food is considered an additive. a. True b. False

True

Question 86 The longer the wave length, the lower the frequency and energy. a. True b. False

True

Question 90 Beta particles can be health hazard either as internal or external radiation because of the ionization in tissues. a. True b. False

True

Question 97 It is believed by some researchers that the hazards of low level radiation may be worse than previously predicted, supporting the principle that "x-rays should be used only when there is good medical reason." a. True b. False

True

Question 58 Marks: 1 Chemical coagulation, flocculation, sedimentation, and filtration remove Choose one answer. a. most bacteria b. most viruses and protozoa c. most helminths d. all of the above

all of the above

Question 54 Marks: 1 The selection of a site for a public building often requires improvements. An undesirable feature that can often be remediated for public health reasons concerns is Choose one answer. a. a sloped desert area b. a high rocky area c. a low swampy area d. a dry mountain area

a low swampy area

Question 76 Marks: 1 If an adequate, satisfactory, and safe water supply is not obtainable at a reasonable cost, the site should be Choose one answer. a. connected to a city water supply b. temporarily abandoned c. abandoned d. a and b

abandoned

Question 24 Marks: 1 Which of the following is the more common and least expensive method of backflow control? Choose one answer. a. air gap separation b. vacuum breaker c. backflow preventer d. barometric loops

air gap separation

Question 59 Marks: 1 The effects of air pollution are influenced by Choose one answer. a. wind speed, and direction b. sunlight c. precipitation d. all of the above

all of the above

Question 13 Marks: 1 ______ routinely sample air, water, and food supplies for radionuclides. Choose one answer. a. The FDA b. The USEPA c. The NRC d. all of the above

all of the above

Question 47 Marks: 1 After milk is pasteurized, it should be rapidly cooled to below ______ so that Choose one answer. a. 45 degrees F; any remaining bacteria will be killed by rapid temperature change b. 40 degrees F; molecular activity in any remaining organisms will be stopped c. 45 degrees F; lactic acid bacteria will be slowed in reproduction d. 40 degrees F; the remaining bacteria will not materially increase

40 degrees F; the remaining bacteria will not materially increase

Question 42 A minimum of __ of sleeping area per person is required in the APHA appraisal method. a. 10 ft2 b. 20 ft2 c. 40 ft2 d. 60 ft2

40 ft2

Question 16 Marks: 1 In order to protect against salmonellae growth in time/temperature control for safety / potentially hazardous food, the recommended temperature for storage is Choose one answer. a. 45 degrees F b. 41 degrees F c. 50 degrees F d. 38 degrees F

41 degrees F

Question 54 Marks: 1 Many states rules requre the refrigeration of Shucked shellfish at or below ______ but above 32 degrees F. Choose one answer. a. 45 degrees F b. 42 degrees F c. 47 degrees F d. 32 degrees F

45 degrees F

Question 22 Marks: 1 Methane in the presence of air is explosive at concentrations between Choose one answer. a. 5 and 15 percent b. 3 and 5 percent c. 20 and 25 percent d. 50 and 60 percent

5 and 15 percent

Question 15 The amount of time required to produce permanent damage to hearing is cut in half with an increase in sound of a. 3 dB b. 5 dB c. 7 dB d. 9 dB

5 dB

Question 30 The best single measure of polluted water is: a. 5 day BOD b. 5 day COD c. 7 day BOD d. 7 day COD

5 day BOD

Question 36 Marks: 1 If the fat content of milk increases by ten percent or more, the pasteurizer temperature must be increase by Choose one answer. a. 15 degrees F b. 25 degrees F c. 5 degrees F d. 10 degrees F

5 degrees F

Question 6 How much earth should be placed on refuse at the end of the day? a. 6 inches b. 12 inches c. 24 inches

6 inches

Question 29 Showers must be provided at hazardous waste clean-up sites when operations will last longer than a. 6 months b. 1 month c. 12 months d. 24 months

6 months

Question 26 Marks: 1 A pool filtration system should filter the entire volume of water every ______. Choose one answer. a. 2 to 3 hours b. 6 to 8 hours c. 10 to 12 hours d. 12 to 24 hours

6 to 8 hours

Question 64 Marks: 1 Oysters grow best at what pH and temperature? Choose one answer. a. 6.2 to 6.4 and 37 degrees F b. 6.2 to 6.8 and 41 degrees F c. 6.4 to 7.0 and 45 degrees F d. 6.0 to 6.8 and 32 degrees F

6.2 to 6.8 and 41 degrees F

Question 43 The gutters or skimmers receive a minimum of __ of the total pool water due to the large quantity of organisms and materials which typically float. a. 95 percent b. 45 percent c. 60 percent d. 30 percent

60 percent

Question 2 Marks: 1 It takes ______ half-lives to reduce the radioactivity of a radionuclide to about 1% of what it was when first measured. Choose one answer. a. 200 b. 125 c. 75 d. 7

7

Question 21 Refuse collection frequency depends largely on the length of time required for fly eggs to mature through the larval stages into adults. Under optimum summer temperatures, maturation time is: a. 1-3 days b. 3-7 days c. 7-10 days d. 2-3 weeks

7-10 days

Question 39 Marks: 1 The ideal pH range for swimming pools is Choose one answer. a. 6.0 to 8.5 b. 6.5 to 8.5 c. 7.2 to 7.6 d. 5.0 to 7.0

7.2 to 7.6

Question 10 Marks: 1 The valley or ravine landfill method utilizes "lifts" from the bottom up with depths usually of Choose one answer. a. 6 to 8 feet b. 8 to 10 feet c. 10 to 12 feet d. 12 to 14 feet

8 to 10 feet

Question 84 The maximum size of a stair riser should be a. 8' ¼ b. 12" c. 6" d. 10" 1/4

8' ¼

Question 51 What percentage of the typical American's lifetime exposure to ultraviolet radiation occurs before age 20? a. 50 b. 60 c. 70 d. 80

80

Question 45 For workers, a sound level above __ dBA should be considered unsafe for daily exposure over a period of months. a. 80 b. 85 c. 90 d. All of the above

90

Question 22 Marks: 1 The EPA requires that toxic waste incinerators achieve a destruction and removal rate of ______ before the material is landfilled. Choose one answer. a. 99.99 percent b. 95.00 percent c. 98.00 percent d. 15.00 percent

99.99 percent

Question 26 Marks: 1 The number of inspections divided by the number of workdays should equal which of the following? Choose one answer. a. average number of inspections per workday b. average number of hours per inspection c. average number of city inspections per workday d. average number of county inspections per workday

average number of inspections per workday

Question 49 Marks: 1 The FDA requires that sunlamps that radiate UV rays be equipped with timers which automatically shut off after Choose one answer. a. 30 minutes or less b. 20 minutes or less c. 10 minutes or less d. based on the intensity of the UV lamp

based on the intensity of the UV lamp

Question 83 What is the first step in evaluating the safety of a potential water system? a. The frequency with which source and distribution system water samples are collected b. A detailed sanitary survey of the water supply c. The standard plate count for bacterial examination d. The results of a bacterial chemical examination

A detailed sanitary survey of the water supply

Question 71 The most common type of injury in a home is a. A fall b. Asphyxiation c. Tripping d. An animal bite

A fall

Question 47 A problem that utility companies are intimating may force them to close operation of nuclear power plants is lack of a. Technology to ensure plant safety b. Trained personnel to operate the plants c. Available resources to monitor plants d. A waste disposal alternative

A waste disposal alternative

Question 44 Eye irritation can be caused by prolonged exposure to water with a pH a. below 7.4 b. above 7.4 c. of 7.0 d. between 7.6 and 8.8

below 7.4, of 7.0

Question 32 Which of the following is the least effective method for cadmium removal from drinking water? a. Activated carbon b. Iron coagulation c. Lime softening d. Ion exchange

Activated carbon

Question 5 The most dangerous of the particulate air pollutants in terms of human health are: a. Dust b. Aerosols c. Pollens d. dirt

Aerosols

Question 47 A warrant to conduct routine inspection of a private dwelling should be obtained only: a. After working hours b. After consent has been refused c. Where surprise is important d. In an emergency

After consent has been refused

Question 20 Marks: 1 The amount of dissolved oxygen required in aerobic bacterial decomposition, measured in ppm or mg/l and used in determining the strength of wastewater is Choose one answer. a. chemical oxygen demand b. total organic carbon c. biochemical oxygen demand d. oxygen-reduction ration

biochemical oxygen demand

Question 52 The leaching of lead from solder into home-brewed liquor is a frequent source of lead poisoning in some rural counties of a. Louisiana b. Mississippi c. Georgia d. Alabama

Alabama

Question 33 Objectionable tastes and odors in public water supplies are, in a great majority of cases, due to the presence of: a. Algae and protozoa b. Animal remains c. Dissolved oxygen d. Yeasts and molds

Algae and protozoa

Question 57 The Emergency Planning and Community Right -to-Know-Act (SARA Title III) requires the disclosure of all the following except type and quantities of: a. Chemicals produced on site b. Chemicals accidentally discharged into the atmosphere c. Chemicals routinely discharged into the atmosphere d. All chemicals routinely discharged into the atmosphere

All chemicals routinely discharged into the atmosphere

Question 69 Administrative hearings can be useful because a. They get the attention of the CEO b. They educate the organization about the law c. They avoid media attention d. All of the above

All of the above

Question 78 Common deficiencies regarding fluoroscopy units may be a. Inadequate shielding b. Absence of lead aprons c. Timing device not functioning properly d. All of the above

All of the above

Question 79 CAT scanners are used to locate a. Tumors b. Blood clots c. Anatomical malfunctions d. All of the above

All of the above

Question 38 The substance commonly used as a coagulant in water treatment is: a. Aluminum sulfate b. Calcium sulfate c. Potassium chloride d. Sodium phosphate

Aluminum sulfate

Question 76 A joist is used: a. To hold up a floor b. As a horizontal support c. As a roof only support d. As a support for sheet rock

As a horizontal support

Question 3 The majority of fresh water is found: a. As groundwater b. In lakes c. In rivers d. In streams

As groundwater

Question 17 Which one of the following is most hazardous to human health? a. Asbestos b. Sulfur dioxide c. Ozone d. Nitrogen oxide

Asbestos

Question 2 Which one of the following is the major source of air pollution in the United States? a. Electric power plants that burn coal or oil b. Steel mills c. Automotive vehicles d. Home heating systems

Automotive vehicles

Question 63 The proper method of obtaining a sample of tap water for bacteriological analysis is to collect the sample from a tap that has: a. Been opened for 2-3 minutes, holding the sample bottle by the neck and filling it to about an inch from the top b. Been opened for 2-3 minutes, holding the sample bottle near the base and filling it to within an inch of the top c. Been opened for 1 minute, holding the sample bottle near the neck and filling it to the top d. Just been opened, holding the sample bottle near the base and filling it to the top

Been opened for 2-3 minutes, holding the sample bottle near the base and filling it to within an inch of the top

Question 16 Marks: 1 The Montreal Protocol categorizes ______ and ______ in two classes based on their ozone-depiction potential. Choose one answer. a. CO2 and PAN b. CFCs and halons c. Ozone depleting greenhouse chemicals d. SO2 and CO

CO2 and PAN

Question 25 Which one of the following has not been associated with slowing or halting respiratory tract cilia movement? a. Ozone b. Carbon dioxide c. Nitrogen dioxide d. Sulfur dioxide

Carbon dioxide

Question 3 All of the following are criteria pollutants except: a. Carbon monoxide b. Sulfur dioxide c. Carbon dioxide d. Nitrogen oxides

Carbon dioxide

Question 39 Catalytic converters work to reduce all of the following except: a. Carbon monoxide b. Hydrocarbons c. Nitrogen oxides d. Carbon dioxide

Carbon dioxide

Question 6 National Ambient Air Quality Standards have been set for all of the following except: a. Carbon dioxides b. Sulfur dioxides c. Nitrogen oxide d. Carbon monoxides

Carbon dioxides

Question 9 Which one of the following is generally found at the highest concentrations in urban atmospheres? a. Sulfur dioxide b. Nitrogen oxide c. Ozone d. Carbon monoxide

Carbon monoxide

Question 27 Which one of the following nations has the greatest annual rate of carbon dioxide production? a. United States b. France c. China d. Canada

China

Question 61 The DPD test is commonly used for the determination of: a. Ozone b. Quaternary: ammonium c. Iodine d. Chlorine or bromine

Chlorine or bromine

Question 68 Perhaps the most significant source of indoor air pollution in terms of particulate levels is: a. Radon emissions from rock formations b. Cigarette smokers c. Wood-burning stoves d. Inefficient space-heaters

Cigarette smokers

Question 78 Leachate containing primarily low molecular weight organic compounds are best treated by a. biological methods b. physical chemical methods c. physical methods d. both a and b above

biological methods

Question 60 In the bacteriological analysis of water a positive completed test is definite proof that the sample of water: a. Was polluted with human fecal material and would be unsafe to drink b. Contained enteric pathogens and would be unsafe to drink c. Was not sterile but safe to drink d. Contained coliform bacteria and may be unsafe to drink

Contained coliform bacteria and may be unsafe to drink

Question 81 A plastic ground cover sealed to the foundation should be placed on the found in the crawl space of the home to: a. Control moisture in the crawl space b. Keep natural gas out of the crawl space c. Keep underground springs from washing away footers d. Keep insects from eating the wood structure

Control moisture in the crawl space

Question 21 Perhaps the major weakness of using animal studies to determine "safe" level of air pollutants is: a. The animal rights movement b. Lack of technology c. Difficulty in extrapolating the results to humans d. Lack of funding for the research

Difficulty in extrapolating the results to humans

Question 4 Marks: 1 The Medical Waste Tracking Act of 1988, which amended the Solid Waste Disposal Act, required ______ to establish a two year demonstration program for tracking medical waste in selected states. Choose one answer. a. CDC b. USDA/APHIS c. EPA d. none of the above

EPA

Question 99 Which of the following agencies is responsible for protecting our waterways from contamination? a. OSHA b. FDA c. EPA d. PHS

EPA

Question 61 The energy of ionizing radiation is measured in: a. Ergs of energy per gram b. One electrostatic unit c. Electron volts (eV) d. One-person Sievert (Sv)

Electron volts (eV)

Question 54 What is the most important means of enforcement of the Federal Food Drug & Cosmetic Act? a. Embargo b. Licensing c. Registration d. Inspection

Embargo

Question 83 X-rays units are generally due for reinspection a. Every year b. Every 2 to 3 years c. Every 5 years d. Every 6 years

Every 2 to 3 years

Question 71 A chlorine concentration of 30 ppm in a drinking water supply is: a. Excessive b. Just right c. Too low d. Would not kill Ecoli

Excessive

Question 64 Probably the best understood type of microwave induced injury involves: a. The skin b. Excessive heating of internal organs c. The liver d. Squamous cell destruction

Excessive heating of internal organs

Question 30 Marks: 1 Life expectancy is a measure of health progress, morbidity levels, and the quality of life. Choose one answer. a. True b. False

False

Question 34 Marks: 1 Hormone or growth regulators also known as systematic herbicides are toxic to the plant living cells they cover and are usually absorbed through the stem of the plant upon contact. Choose one answer. a. True b. False

False

Question 36 Marks: 1 Only sperm and nerve cells can apparently replace themselves or recover, to some extent, from radiation exposure if the dose is not excessive. Choose one answer. a. True b. False

False

Question 39 Marks: 1 A QOL index is useful in determining future demands made on water supplies in subdivisions. Choose one answer. a. True b. False

False

Question 68 The most likely cause of photochemical smog is due to: a. Large industries b. Chemical processing plants c. Hazardous waste incinerators d. Heavy motor vehicle traffic

Heavy motor vehicle traffic

Question 51 The term applied to certain incorporated towns or cities in which the state constitution or legislature gives them the right to formulate and adopt city charters and regulate their own affairs is: a. Eminent domain b. Ultra vires c. Inherent law d. Home rule

Home rule

Question 64 Marks: 1 Several proposals to establish a QOL index were investigated by Choose one answer. a. Hornback b. Smith c. Lewis d. Peale

Hornback

Question 51 According to the Resource Conservation and Recovery Act (RCRA) how must hazardous household waste be disposed? a. Household hazardous waste is exempt from RCRA requirements b. It must be disposed as a hazardous waste by a professional hazardous waste company c. It must be incinerated d. It may be disposed in a storm drain or sanitary sewer

Household hazardous waste is exempt from RCRA requirements

Question 64 The indoor air pollution problem may have worsened as the result of all of the following except: a. Magnetically sealed doors b. Increased outside air-exchange c. Triple-glazed windows d. Thick insulation

Increased outside air-exchange

Question 59 Marks: 1 ______ has the responsibility for internal housekeeping and for monitoring all waste discharges in terms of types and quantities. Choose one answer. a. Industry b. NCR c. NEPA d. State health departments

Industry

Question 25 What is the usual mode of infection from Salmonella? a. Ingestion of contaminated food b. Ingestion of contaminated water c. Contact with an active case d. Contact with fomites

Ingestion of contaminated food

Question 69 If water in a stream is a 20 degrees C and has nine mg/1 oxygen per liter: a. It would be reasonable to assume the stream was grossly polluted b. It would probably be comfortable for rainbow trout c. It would be safe for drinking d. Has too little oxygen for even catfish to live in

It would probably be comfortable for rainbow trout

Question 79 The largest outbreak of cadmium poisoning thus far documented occurred in: a. Brazil b. Japan c. Mexico d. United States

Japan

Question 27 Which one of the following has not been suggested as a reason that Americans are receiving excess exposure to X-rays? a. Technicians or physician error b. Medicaid/medicare requirements c. Malfunction of the equipment d. Fear of malpractice

Medicaid/medicare requirements

Question 49 Following an inspection and the written report and prior to leaving the site, it is desirable to: a. Inform the supervisor about how to correct the items noted b. Check bacteria counts and other available information c. Notify the office that the inspection has been completed d. Meet with management and discuss the significance of the items

Meet with management and discuss the significance of the items

Question 54 Which one of the following areas of the United States would be most sensitive to acid precipaitation? a. Rocky Mountain states b. Southeast c. New England d. Great Plains

New England

Question 3 Marks: 1 Regulation of bloodborne pathogens is promulgated by Choose one answer. a. OSHA b. USDA c. NIH d. CDC

OSHA

Question 22 Marks: 1 The development and maintenance of an exposure control plan is one requirement of Choose one answer. a. EPA's biomedical waste regulations b. OSHA's bloodborne pathogens regulations c. USDA/APHIS plant genetics regulations d. FIFRA

OSHA's bloodborne pathogens regulations

Question 12 Which residual test for chlorine would be least desirable? a. SNORT b. Methyl orange c. OTA d. DPD

OTA

Question 29 Lakes having characteristics of being clean, high in DO, deep and receiving few nutrients: a. Oligotrophic b. Mesotrophic c. Euphoric d. Eutrophic

Oligotrophic

Question 7 "Ground radiation" refers to: a. The adsorption of ultraviolet radiation by the earth b. The amount of short-wave UVA rays that are absorbed c. Outward radiation of energy from the d. Absorption of radiation during darkness

Outward radiation of energy from the

Question 72 The gases frequently found in water that encourage corrosion are a. Methane and oxygen b. Oxygen and carbon dioxide c. Chlorine and carbon dioxide d. Methane and hydrogen sulfide

Oxygen and carbon dioxide

Question 13 The major constituent of the photochemical oxidants is: a. Sulfur dioxide b. Ozone c. Peroxyacetyl nitrate d. Nitrogen dioxide

Ozone

Question 75 Which term is used to show the exposure of large populations to low level radiation? a. Person-rem b. Gamma-rem c. Radiation-rem d. Quantum-rem

Person-rem

Question 52 Methyl bromide is used primarily as a a. Fertilizer b. Herbicide c. Pesticide d. fungicide

Pesticide

Question90 When temporary shelter is necessary in an emergency, the first consideration in shelter selection should be a. Protection of the survivors from health and safety risks b. Availability of heat, light, and space c. The emotional state of the survivors d. Color of chlorination tablets

Protection of the survivors from health and safety risks

Question 36 Which one of the following is not one way to protect the safety of uranium miners? a. Close off unused sections of mines b. Inclusion of better ventilation systems c. Encourage miners to wear respirators d. Provide special warning monitors for miners to wear

Provide special warning monitors for miners to wear

Question 4 Which organism would probably survive in a hot tub? a. E coli b. Vibrio cholera c. Entamoeba histolytica d. Pseudomonas aeruginosa

Pseudomonas aeruginosa

Question 34 The Clean Air Act Amendments of 1990 did all of the following except: a. Expand the scope of regulatory requirements b. Address new issues ignored in earlier amendments c. Create more consistency with other environmental issues d. Reauthorize funding for the EPA

Reauthorize funding for the EPA

Question 1 The discoverer of X-rays was: a. Crookes b. Curie c. Roentgen d. Becquerel

Roentgen

Question 30 Marks: 1 The wastewater from a toilet or latrine flushing is referred to as Choose one answer. a. gray water b. black water c. green water d. red water

black water

Question 76 The wastewater from a water closet and latrine or aqua privy flushing is referred to as a. gray water b. black water c. green water d. red water

black water

Question 35 Microbial pollution travels only a short distance through a. Solution channels in limestone b. Fissured rock c. Dried out, cracked day d. Sandy loam or clay

Sandy loam or clay

Question92 Key components of the HAZWOPER program exclude a. Safety and health programs b. Personal protection c. Training d. Sanitary requirements

Sanitary requirements

Question 52 If you had to rely on only one of the following to determine the safety of a drinking water supply, which one would you choose? a. Three consecutive samples showing no coliform b. No chlorides or nitrates in the water c. Watershed area remote and isolated d. Sanitary survey of supply (source, equipment, etc)

Sanitary survey of supply (source, equipment, etc)

Question 38 Standards designed to promote human welfare by protecting agriculture crops, livestock, property and the environment in general are called: a. Primary standards b. Secondary standards c. Tertiary standards d. Remedial standards

Secondary standards

Question 30 What type of filter is recommended for use in small communities and rural places? a. Diatomaceous earth b. Granular c. Cartridge d. Slow sand

Slow sand

Question 48 The Monitored Retrievable Storage (MRS) concept deals with: a. Storage of spent nuclear fuel in above-ground casks b. Surveillance of nuclear gas emissions from storage areas c. Development of special tank cars that will transport nuclear waste to disposal sites d. Construction of permanent nuclear waste disposal sites

Storage of spent nuclear fuel in above-ground casks

Question 4 The region of the atmosphere where the temperature slowly rises with increases in altitude is the: a. Troposphere b. Stratosphere c. Mesosphere d. tropopause

Stratosphere

Question 26 Inhalation of which one of the following may result in chronic airway resistance? a. Carbon monoxide b. Carbon dioxide c. Nitrogen dioxide d. Sulfur dioxide

Sulfur dioxide

Question 53 Perhaps the best sunscreens are those: a. With an SPF of 20 or above b. That are most water resistant c. That have a creamy base d. That have been prescribed by a physician

That are most water resistant

Question 51 A general rule when surface waters are used for drinking water supplies is: a. That they must be considered contaminated b. That fluorides must be used c. That they require softening d. Aeration is usually required

That they must be considered contaminated

Question 72 The shorter the wave length a. The higher the frequency and lower the energy b. The lower the frequency and energy c. The lower the frequency and higher the energy d. The higher the frequency and energy

The higher the frequency and energy

Question 67 Which one of the following is true? a. Childhood exposure to EMFs has been associated with subsequent development of lung cancer b. The risks associated with childhood exposure to EMF are inconclusive c. The risks between EMT exposure and reproductive disorders has been definitively demonstrated d. EMF is clearly a potentially significant environmental health issue

The risks associated with childhood exposure to EMF are inconclusive

Question 85 The quality of surface water depends on a. The use of chemicals for disinfection of drinking water b. The elimination of coliform organisms c. The watersheds area drained, land use, location and sources of pollution and the natural agencies of purification d. The injecting of a chlorine solution into water at its source

The watersheds area drained, land use, location and sources of pollution and the natural agencies of purificatio

Question 19 Which one of the following is true? a. Low levels of exposure to ionizing radiation is not a problem b. There is a linear relationship between exposure to ionizing radiation and gene mutation c. Chromosomal damage does not result from exposure to radioactive isotopes d. There is little truth to the statement that radiotherapy nurses have an increased frequency of chromosomal mutations

There is a linear relationship between exposure to ionizing radiation and gene mutation

Question 72 A S trap is not considered legal in most state plumbing codes due to which of the following factors? a. They clog easily b. They are not vented c. They are unsightly d. They do not drain

They are not vented

Question 10 Marks: 1 Lice require human blood to live. Choose one answer. a. True b. False

True

Question 89 A radioisotope is an artificially created radioactive isotope of a chemical element that is normally not radioactive. a. True b. False

True

Question 94 In assessing radiation hazard, the sum total of all exposures should be considered. a. True b. False

True

Question 95 Actual amounts of radiation exposure received in different parts of the world will vary with altitude, background and medical practices. a. True b. False

True

Question 96 With dental x-rays, it is necessary to establish the correct exposure time for kilovoltage, milliamperage and source-to-skin distance. a. True b. False

True

Question 44 A potential public health problem associated with reprocessing nuclear fission material is: a. Volatile radioisotopes are released into the atmosphere b. Reducing the concentration of U235 c. Converting gas into solid pellets d. Leaching of wastes into the soil

Volatile radioisotopes are released into the atmosphere

Question 101 Which of the following would be classified as a non-transient, non-community water system (NTNCWS)? a. Water supply serving a campground b. Water supply serving a small city c. Water supply serving a highway rest area d. Water supply serving a factory with at least 25 employees

Water supply serving a factory with at least 25 employees

Question 57 An inspection of a premise can lawfully be made in all of the following situations except: a. When refused admission b. With the consent of the owner c. In an emergency d. When a search warrant has been issued

When refused admission

Question 66 In most areas, radon concentrations tend to be highest in: a. Summer b. Spring c. Winter d. fall

Winter

Question 10 Marks: 1 An "environmental assessment" developed under NEPA is Choose one answer. a. an environmental evaluation dealing with fish b. a concise public document for which a Federal agency is responsible c. a public document of environmental concern dealing with acid rain only d. an environmental evaluation dealing with air pollution control

a concise public document for which a Federal agency is responsible

Question 63 The symptoms from contact with poison ivy, oak and sumac normally appear after a. 8 to 10 days b. a few hours to 7 days c. 10 to 15 days d. none of the above

a few hours to 7 days

Question 55 Marks: 1 If sufficient amounts of activated carbon in the powdered form are used, practically all tastes and odors are removed from water by Choose one answer. a. absorption b. polymerization c. adsorption d. oxidation

adsorption

Question 26 Marks: 1 Sources of pollutants can generally be classified as Choose one answer. a. line sources b. area sources c. point sources d. all of the above

all of the above

Question 4 What step listed below must be done in order to obtain reproducible results in the soil perc test? a. totally saturated soil before beginning the test b. test must extend at least 2 feet below frost line c. test hole must be greater than 3 ft above seasonal high water tall groundwater, rock or tight soil d. all of the above

all of the above

Question 40 Sources of dioxin include a. wood preserved with PCPs b. paper mill bleached pulp and sludge c. bleached paper products d. all of the above

all of the above

Question 8 Which should not be added to septic tanks? a. salt or brine b. sulphuric acid c. chlorine bleach or ammonia d. all of the above

all of the above

Question 92 Proper disinfection of water using chlorine depends on the concentration of chlorine plus which of the following? a. Temperature of the water b. pH of the water c. contact period d. all of the above

all of the above

Question 26 The one of the following diseases in which rats don't act as the intermediate hosts is a. amoebic dysentery b. endemic typhus c. plague d. Weil's disease

amoebic dysentery

Question 38 Marks: 1 In general, there are three kinds of weeds. These are Choose one answer. a. srads, clowds, and mullahs b. bronzes, clorles, and direals c. annuals, biennials, and perennials d. milkweeds, bindweeds, and perennials

annuals, biennials, and perennials

Question 80 Large items that are not salvaged should be a. set directly into the landfill b. placed in an alternative location c. compressed or shredded d. any of the above

any of the above

Question 104 The primary Drinking Water Standards a. Apply to community water systems only b. Apply to community water systems and non-transient, non-community water systems c. Are health related and enforceable d. a and c e. b and c

b and c

Question 6 Marks: 1 Additional fuel is needed to incinerate refuse Choose one answer. a. with 30 percent or less rubbish b. with 50 percent or more moisture c. with 10 percent or more metals d. both a and b above

both a and b above

Question 31 The variety of rat most common in the US in urban environments is: a. black rat b. brown rat c. roof rat d. white rat

brown rat

Question 4 Pesticides used in cockroach control: a. cannot overcome good sanitation b. should leave no residual c. must be applied on a regular basis to be effective d. need only be sprayed in the air

cannot overcome good sanitation

Question 34 The relationship between the photosynthetic rate of green plants and the carbon dioxide content of the atmosphere may aptly be termed: a. carbon dioxide fertilization b. plant/atmosphere ratio c. oxygen deprivation ratio d. photosynthetic ratio

carbon dioxide fertilization

Question 65 Marks: 1 Which of the following is not a malodorous gas? Choose one answer. a. sulfur dioxide b. hydrogen sulfide c. carbon monoxide d. phenol

carbon monoxide

Question 58 A factor or agent which increases the risk of cancer is known as a a. teratogen b. mutagen c. carcinogen d. fomite

carcinogen

Question 54 An infected organism which does not experience symptoms during the spread of an illness is called a a. reservoir b. parasite c. host d. carrier

carrier

Question 89 The ability of a soil to absorb and allow water and air to pass through is related to all of the following except a. chemical composition b. texture c. cation exchange capacity d. granular structure

cation exchange capacity

Question 50 Which of the following is not related to enchinococcosis: a. dogs b. cats c. sheep d. tapeworm

cats

Question 32 Marks: 1 A water or foodborne disease outbreak with a short incubation period is likely because of Choose one answer. a. chemical poisoning b. schistosomiasis c. salmonellosis d. shigella

chemical poisoning

Question 12 The most characteristic symptom of individuals occupationally exposed to PCBs is: a. chloracne b. live cancer c. visual disturbance d. physical tremor

chloracne

Question 46 Marks: 1 Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past or possibly intermittent pollution? Choose one answer. a. fecal streptococci b. escherichia coli c. aerobacter aerogenes d. clostridium sporulates

clostridium sporulates

Question 105 Which of the following is not a step in proper machine dishwashing? a. wash and sanitize b. scrape c. cloth dry d. rack dishes

cloth dry

Question 57 Marks: 1 Often over 90% of sodium arsenate can be removed by Choose one answer. a. filtration b. coagulation c. ion exchange d. all of the above

coagulation

Question 32 Which one of the following, when burned, emits the most carbon dioxide? a. wood b. natural gas c. oil d. coal

coal

Question 7 Which bacterial group is indicative of fecal contamination or sewage pollution? a. pseudomonas b. coliform c. salmonella d. all the above

coliform

Question 34 Marks: 1 The generally accepted method(s) of preventing subdivision complications and obtaining orderly community growth is (are) Choose one answer. a. comprehensive land-use planning b. education c. effective regulation d. all of the above

comprehensive land-use planning

Question 18 Marks: 1 Which of the following is the least approprate option for hazardous waste minimization? Choose one answer. a. treatment b. waste reduction at the point of generation c. process modification d. concentration

concentration

Question 51 Occupational risk of lead poisoning is most prominent among: a. school teachers b. factory workers c. construction workers who demolish bridges d. shipyard workers

construction workers who demolish bridges

Question 31 At present the largest source of methane is: a. belching of cows b. fermenting manure piles c. cultivation of rice d. use of nitrogen fertilizers

cultivation of rice

Question 23 Marks: 1 The rate at which atoms of radioactive sources (radionuclides) disintegrate are measured in Choose one answer. a. rems b. rods c. curies d. roentgens

curies

Question 15 The most prevalent arthropod-borne disease transmitted to humans in the US today is: a. rabies b. plague c. malaria d. encephalitis

encephalitis

Question 19 In which situation would you most likely find PAM? a. river or pond b. geothermal pool c. reservoir d. Atlantic Ocean

geothermal pool

Question 11 Which product would probably have the lowest reclamation value? a. Al b. glass c. paper d. heat

glass

Question 82 Which one of the following is least likely to occur in the US? a. mercuric poisoning b. lead poisoning c. cadmium poisoning d. PCB poisoning

cadmium poisoning

Question 14 Marks: 1 The molecular state of hypochlorous acid is the desired product from chlorination of pool waters. This product Choose one answer. a. is increased with an upward movement of pH b. is decreased with a lower of pH c. is ionized with a pH decrease d. is 62 percent molecular at a pH of 7.2

is 62 percent molecular at a pH of 7.2

Question 80 A major problem associated with cadmium poisoning is: a. reproductive difficulty b. osteomalacia c. alopecia d. kidney failure

kidney failure

Question 12 What compound is the principal scale former? a. calcium carbonate b. potassium carbonate c. magnesium sulfate d. sodium carbonate

calcium carbonate

Question 25 A major problem associated with occupational exposure to asbestos is: a. chloracne b. cancer c. liver allure d. heart disease

cancer

Question 22 Marks: 1 Facultative bacteria can Choose one answer. a. live under both aerobic and anaerobic condition b. live only under aerobic conditions c. live and reproduce with or without moisture d. live only in the soil

live under both aerobic and anaerobic condition

Question 63 Which one of the following is probably least susceptible to microwave induced injury? a. Eyes b. Urinary bladder c. Gastrointestinal test d. liver

liver

Question 9 Marks: 1 Which one of the following would be considered primary gain for moving from the city into a suburban area? Choose one answer. a. fire protection b. lower taxes c. better schools d. improved sanitary conditions

lower taxes

Question 40 Marks: 1 It has been found that pools less than 30 feet wide with a surface area less than 1600 ft2 Choose one answer. a. may utilize skimmers instead of gutters b. may utilize gutters rather than skimmers c. are not required to have disinfectant feeders d. do not have to use continuous equipment operation

may utilize skimmers instead of gutters

Question 42 Marks: 1 Which of the following is an explosive component of sewer gas? Choose one answer. a. carbon dioxide b. carbon monoxide c. hydrogen sulfide d. methane

methane

Question 21 Which is the standard measure for water turbidity? a. nephelometric turbidity unit b. siple turbidity unit c. formazin turbidity unit d. jackson turbidity unit

nephelometric turbidity unit

Question 23 The final product in biochemical oxidation of ammonia yield: a. nitride b. nitrite c. nitrate d. nitrogen

nitrate

Question 24 Which contaminant in water is associated with methemoglobinemia? a. zinc b. lead c. copper d. nitrate

nitrate

Question 27 Marks: 1 Which of the following is not a common refrigerant? Choose one answer. a. carbon dioxide b. methyl chloride c. sulfur dioxide d. nitrogen oxide

nitrogen oxide

Question 48 Marks: 1 The normal change in temperature with altitude is Choose one answer. a. noted as an increase due to the increased closeness and lack of filtering of sunlight b. noted as a decrease due to expansion and thus adiabatic cooling of air c. noted as a decrease due to black-body emission into space, coupled with the lessening of insulation provided by other air d. noted as an increase due to the rising of warm air

noted as a decrease due to expansion and thus adiabatic cooling of air

Question 33 Marks: 1 In the APHA-PHS Recommended Housing Maintenance and Occupancy Ordinance, the responsibility of storing and disposing of all rubbish is assigned to the Choose one answer. a. owner b. occupant c. landlord d. owner and occupant jointly

owner and occupant jointly

Question 34 Marks: 1 The gases frequently found in water that encourage corrosion are Choose one answer. a. methane and oxygen b. oxygen and carbon dioxide c. chlorine and carbon dioxide d. methane and hydrogen sulfide

oxygen and carbon dioxide

Question 23 Marks: 1 A standard for dishwashing that states that the "total bacteria count should not exceed one hundred per utensil surface," is an example of what type of objective? Choose one answer. a. enforceable b. specification c. compliance d. performance

performance

Question 61 Marks: 1 The top of the absorption field gravel should be covered with Choose one answer. a. tar paper b. permeable material c. plastic d. treated paper

permeable material

Question 44 A major event that lessened environmental exposure to lead was: a. Improvements in the internal combustion engine b. phase-out of leaded gasoline c. fining industries who did not controlled emissions d. passing the Clean Air Act

phase-out of leaded gasoline

Question 47 What is the most common form of malaria? a. plasmodium ovale b. plasmodium vivax c. plasmodium malariae d. plasmodium falciparum

plasmodium vivax

Question 54 Which one of the following could produce the sudden release of lead that has been stored in the bones into the bloodstream? a. pregnancy b. hypothermia c. stress d. exhaustion

pregnancy

Question 6 Marks: 1 A comprehensive solid waste study must include Choose one answer. a. preliminary analysis for solid waste treatment and disposal b. administration and financing c. project study d. a comprehensive regional plan

preliminary analysis for solid waste treatment and disposal

Question 20 Age-related hearing loss is referred to as: a. preemptive threshold shift b. presbyopia c. presbycusis d. predysplasia

presbycusis

Question 17 Marks: 1 Pool inlets should be located a minimum of 10 inches to 15 inches below the water line to Choose one answer. a. ensure good mixing b. prevent clogging c. prevent loss of disinfectant d. ensure mixing of pH additives poured into pool

prevent loss of disinfectant

Question 38 Marks: 1 An environmental impact statement should contain all of the following except Choose one answer. a. project description and land-use relationships b. probable impact of the proposed action on the environment c. probable adverse environmental effects which can be avoided d. relationship between local short-term uses of the environment and enhancement of long-term productivity

probable adverse environmental effects which can be avoided

Question 17 Marks: 1 The dumping of garbage and other refuse at sea in the United States is Choose one answer. a. permitted at depths greater than 100 feet b. considered a sanitary practice if weather conditions, distance from shore, and depth of water requirements are met c. prohibited d. not very cost-effective

prohibited

Question 27 In rodent control, the primary method of producing permanent results is: a. fumigating b. poisoning c. proofing d. trapping

proofing

Question 16 Marks: 1 The changing role of environmental health scientists, including their duties of administrating services to the public, has been brought about largely due to Choose one answer. a. adequate intelligence data on environmental trends showing the urgency for action b. stricter governmental control c. public recognition of the problems and the desire for higher quality of life d. none of the above

public recognition of the problems and the desire for higher quality of life

Question 13 Marks: 1 Bats are threat to humans because they carry Choose one answer. a. encephalitis b. rabies c. psittacosis d. pediculosis

rabies

Question 44 Which of the following is unlike the rest, regarding epidemiology? a. malaria b. rocky mountain spotted fever c. rabies d. eastern encephalitis

rabies

Question 69 Marks: 1 Filters will Choose one answer. a. add haze on the film b. reduce stray radiation c. not affect radiation absorbed by the patient d. cause a greater exposure time

reduce stray radiation

Question 8 Marks: 1 Most of the funding for municipal capital improvement is provided by Choose one answer. a. donations b. state funds c. revenue bonds and general obligation bonds d. loans

revenue bonds and general obligation bonds

Question 2 Roaches are capable of spreading: a. malaria b. Rock Mt Spotted Fever c. rabies d. salmonellosis

salmonellosis

Question 45 Marks: 1 ______ is an infectious disease of the skin caused by burrowing of the female mite into the skin where it deposits its eggs. Choose one answer. a. tularemia b. scabies c. psittacosis d. pediculosis

scabies

Question 29 Marks: 1 "Swimmers itch" is also known as Choose one answer. a. gastroenteritis b. trichinosis c. schistosomiasis d. leptospirosis

schistosomiasis

Question 11 Marks: 1 The ______ test shows the amount of extraneous material in milk but will not show dissolved material. Choose one answer. a. appearance b. microscopic count c. thermoduric d. sediment

sediment

Question 18 Marks: 1 Strong emphasis is placed on the control of shellfish because Choose one answer. a. shellfish can transmit a number of infectious diseases such as dysentery, infectious hepatitis, cholera, and typhoid fever b. seafood is in popular demand c. the shellfish population is decreasing due to water pollution d. a great number of shellfish are bought and sold illegally

shellfish can transmit a number of infectious diseases such as dysentery, infectious hepatitis, cholera, and typhoid fever

Question 25 The soil profile of a site refers to the: a. overall perc rate b. side view of the face of the soil horizon c. slope d. topography

side view of the face of the soil horizon

Question 49 Marks: 1 Which of the following is not commonly used for disinfection of water? Choose one answer. a. chlorine b. silver nitrate c. chlorine-ammonia compounds d. ozone

silver nitrate

Question 43 Perhaps the first occupational exposure to a toxic mineral was associated with: a. mining b. silver processing c. felt hat manufacturing d. developing of habitats

silver processing

Question 20 Which is not a measure of water turbidity? a. nephelometric turbidity unit b. siple turbidity unit c. formazin turbidity unit d. jackson turbidity unit

siple turbidity unit

Question 18 The site control program at an uncontrolled hazardous waste site must include a. site work zones b. times when EPA is likely to inspect c. medical surveillance requirements d. none of the above

site work zones

Question 27 Marks: 1 Depending on the size of the community, there should be a minimum of one man at a landfill site and ______ men per 1000 yd3 of waste dumped per day that the site is open. Choose one answer. a. six b. four c. three d. two

six

Question 20 After collection, there are four main steps involved in resource recovery. Place in correct order: a. size reduction, recovery, separation, utilization b. size reduction, separation, recovery, utilization c. recovery, separation, size reduction, utilization d. separation, size reduction, recovery, utilization

size reduction, separation, recovery, utilization

Question 53 In recent years, the largest number of rabies cases were associated with a. skunks b. bats c. dogs d. raccoons

skunks

Question 35 Marks: 1 The racks in refrigerators or walk-in coolers must be ______ to allow circulation of cold air. Choose one answer. a. slotted b. solid c. spaced equal distances apart d. none of the above

slotted

Question 23 Marks: 1 While it is arguably preferable to conduct a soil analysis for sizing absorption fields percolation tests are sometimes used. In order to obtain reproducible results with a soil percolation test, it is very important to: Choose one answer. a. add at least 2 inches of gravel to the bottom of the test pit b. cross-reference results with reliable soil maps c. soak the hole with water before the test is made d. repeat the test or use dual pits

soak the hole with water before the test is made

Question 18 Marks: 1 Which of the following disinfecting compounds can be used full strength for disinfection? Choose one answer. a. perchloron b. calcium chloride c. chlorinated lime d. sodium hypochlorite

sodium hypochlorite

Question 1 What are two factors commonly used to determine soil permeability or ability of the soil to absorb wastewater? a. soil pecolation test and slope of land b. soil characteristics and slope of land c. soil perc test and soil characteristics d. soil characteristics and watershed

soil perc test and soil characteristics

Question 33 Marks: 1 The ratio of the energy passing through a wall, floor, or ceiling to the energy striking it is called Choose one answer. a. sound absorption b. sound transmission loss c. noise reduction d. all of the above

sound transmission loss

Question 26 A major part of the Earth Summit was to: a. stabilize concentrations of greenhouse gases at 1990 levels b. fine nations that did not comply with the accord c. conduct joint national research about the environment d. decrease the amount of fossil fuel consumption

stabilize concentrations of greenhouse gases at 1990 levels

Question 45 Which one of the following has been identified as the major source of adult lead exposure? a. ceramic coffee mugs b. pewter goblets c. bone china dinnerware d. foil capsules on wine bottles

ceramic coffee mugs

Question 26 Marks: 1 Vent gases combined with high moisture inside a chimney will form Choose one answer. a. a glass-like glaze b. hydrochloric acid c. sodium chloride d. sulfuric acid

sulfuric acid

Question 13 The preferred treatment for algae control is: a. copper sulfate b. superchlorination (heavy chlorination) c. quaternary ammonium d. drain and scrub pool

superchlorination (heavy chlorination

Question 53 All are anti-coagulant type rodenticides except" a. PMP b. surflan c. warfarin d. fumarin

surflan

Question 72 Marks: 1 The Council on Environmental Quality requires ______ to submit an Environmental Quality Report to Congress. Choose one answer. a. the President b. each representative c. the governor of each state d. federal agencies

the President

Question 13 The historical significance of the Montreal Protocol is: a. the agreement among nations of the world to work together to prevent a disaster of global proportions b. it represented an international response to a public outcry c. it eliminated halon production from the world d. it stopped the expansion of the "hole in the sky"

the agreement among nations of the world to work together to prevent a disaster of global proportions

Question 73 Marks: 1 Which of the following defines effective porosity or specific yield? Choose one answer. a. the amount of water that will drain out of saturated rock or soil by gravity b. the rate of flow of water at 60 degrees F in gallons per day c. the actual efficiency of a given water bearing formation d. both a and b above

the amount of water that will drain out of saturated rock or soil by gravity

Question 81 If properly installed, one of the best floorings for kitchens, dairies, bakeries and similar places is a. cork b. linoleum c. ceramic tile d. concrete

ceramic tile

Question 59 A treatment for lead exposure that involved administering a drug that binds to lead and facilitates its excretion from the body is called: a. plumbism b. chelation c. plumbum extraction d. frumentum deletion

chelation

Question 14 Marks: 1 Of the following, which is not a variable to be considered when deciding upon a safe distance between a well and a sewage disposal system? Choose one answer. a. well construction, tightness of pump connection, depth of well casing and sealing of the annual space b. the number of individuals utilizing the well c. the volume, strength, type and dispersion of the polluted material d. the soil structure and texture

the number of individuals utilizing the well

Question 79 If a septic tank is pumped in a wet period a. the tank may be crushed by the wet earth b. the water will flow into the tank c. the tank may float out of the ground d. in field may flood the tank

the tank may float out of the ground

Question 37 What "attracted" industry to the use of chlorofluorocarbons: a. their ability to act as a catalyst b. their ability to break down in certain reactions c. their chemical stability d. their affinity for other chemicals

their chemical stability

Question 8 Marks: 1 Which of the following chemicals is the most widely used to destroy microorganisms? Choose one answer. a. chlorine b. copper sulfate c. chloramine d. hydrogen sulfate

chlorine

Question 10 The most serious threat to the ozone layer is: a. chlorofluorocarbons b. jet airplane travel c. emissions from automobile exhaust d. use of nitrogen fertilizers

chlorofluorocarbons

Question 2 Marks: 1 Land disposal by hazardous waste regulation includes Choose one answer. a. incineration b. waste pile c. sewer disposal d. fuel blending

waste pile

Question 18 Which one of the following is not a major source of human exposure to dioxin? Consumption of contaminated: a. fish b. meat c. dairy products d. water

water

Question 3 Marks: 1 A hydraulic ram is used to elevate a quantity of water to a higher elevation. Rams are powered by Choose one answer. a. wind b. electricity c. water d. heat

water

Question 36 The goal for hazardous waste management should be a. zero discharge b. increased generation c. more regulations d. both b and c

zero discharge

Question 1 Marks: 1 Which of the following is not a characteristic of hazardous waste? Choose one answer. a. ignitability b. corrosivity c. reactivity d. combustibility

combustibility

Question 30 Marks: 1 A program plan should be developed for each of the program activities. This plan should list which of the following criteria for each activity? Choose one answer. a. work load and methods to meet program objectives and financing b. resource requirements, goals and objectives c. need for the program, evaluation, and law d. all the above

all the above

Question 39 During an emergency, the drinking water source should be a. assumed safe b. safe only if it comes from a deep well c. assumed unsafe d. safe if it is used in large amounts

assumed unsafe

Question 14 Marks: 1 Inspection report forms are primarily tools used to Choose one answer. a. enforce regulations b. assure complete investigations and compliance with uniform policy c. assure complete compliance d. motivate management supervision

assure complete investigations and compliance with uniform policy

Question 29 Marks: 1 The effectiveness of an inspection program depends on technical competence and the ______ of regulatory staff. Choose one answer. a. academic degrees b. physical qualifications c. genealogy d. attitude

attitude

Question 54 What is the term for a statistical estimate of an oral dose of a chemical that produces a lethal effect on half of an animal population? a. LC50 b. LD50 c. EC50 d. ED50

. LD50

Question 63 Marks: 1 Oysters grow best in water with a salinity of Choose one answer. a. 0.42 to 0.72 b. 0.24 to 0.27 c. 2.5 percent d. greater than 0.31

0.24 to 0.27

Question 4 Marks: 1 An operating free chlorine residual of ______ is usually required in practice. Choose one answer. a. 0.2 ppm b. 1.0 to 3.0 mg/l c. 0.4 to 0.8 mg/l d. 2 to 5 ppm

1.0 to 3.0 mg/l

Question 55 The smallest diameter hole through which an average house mouse can pass is a. 1/4 inch b. 1/2 inch c. 3/4 inch d. 1 inch

1/2 inch

Question 82 Clostridium botulinum spores are killed in a. 10 to 15 minutes at 80C b. 10 to 15 minutes at 80F c. 1 minute at 250F d. 10 to 15 minutes at 230F

10 to 15 minutes at 230F

Question 65 Marks: 1 In a dry food storage room, the artificial lighting should provide a minimum of Choose one answer. a. 10-foot candles b. 50-foot candles c. 100-foot candles d. 3-foot candles

10-foot candles

Question 15 Marks: 1 If 10 decibels is 10 times more intense than one decibel, how many times more intense is 20 decibels than one decibel? Choose one answer. a. 20 b. 30 c. 100 d. 1000

100

Question 41 Marks: 1 The Norway rat has a normal home range of Choose one answer. a. 100 to 150 feet b. 300 to 500 feet c. 1 block d. 3 to 5 blocks

100 to 150 feet

Question 30 Marks: 1 Oysters free themselves of contaminating viruses and bacteria within ______ of exposure in purified seawater. Choose one answer. a. 12 to 24 hours b. 6 to 12 hours c. 12 to 2 days d. 18 to 24 hours

12 to 24 hours

Question 27 In the United States the first federal attempt to regulate pollutant emissions was enacted in: a. 1950 b. 1955 c. 1960 d. 1965

1955

Question 30 Regulations regarding automobile emission standards began with automobiles manufactured in: a. 1958 b. 1963 c. 1968 d. 1973

1968

Question 58 A female rat becomes sexually mature in a. 2 to 3 months b. 2 to 3 weeks c. 1 to 2 months d. 4 to 6 weeks

2 to 3 months

Question 15 Marks: 1 In order to control rats at open dumps, a poison-bait application program should be started ______ before a site is abandoned or converted and before earthmoving equipment is brought to the site. Choose one answer. a. 2 weeks b. 3 days c. 3 weeks d. 2 months

2 weeks

Question 47 Marks: 1 Storage of clothing, bedding, and any other lice infested items for at least ______ will cause the lice to die of starvation. Choose one answer. a. 10 days b. 3 days c. 6 months d. 2 weeks

2 weeks

Question 1 Marks: 1 It is known that some common pathogenic organisms found in wastewater will survive more than __________ of harsh temperature extremes. Choose one answer. a. 2 months b. 5 months c. 2 years d. 5 years

2 years

Question 10 Approved emergency response plans at nuclear electric power plants sites must be tested at least every. a. 2 years b. quarter c. 5 years d. 1 month

2 years

Question 33 The percentage of electrical energy generated for use in the US by nuclear power plants is approximately: a. 10 b. 20 c. 30 d. 40

20

Question 2 Marks: 1 Office space should provide at least ______ per minute per occupant of clean outside air at minimum where smoking is not prohibited. Choose one answer. a. 5 ft3 b. 10 ft3 c. 20 ft3 d. 30 ft3

20 ft3

Question 12 It is estimated that the number of Americans who are exposed daily to noise that has the potential to damage their hearing is: a. 5 million b. 10 million c. 15 million d. 20 million

20 million

Question 16 What is permissible 8 hour threshold limit value for H2S? a. 10 ppm b. 20 ppm c. 30 ppm d. 40 ppm

20 ppm

Question 91 Dairy equipment can be disinfected with a chlorine solution of a. 20 mg/l b. 2 mg/l c. 200 mg/l d. 220 mg/l

200 mg/l

Question 100 Leaching from a garbage dump has been found to pollute wells a. 2000 feet away b. 1400 feet away c. 100 feet away d. 50 feet away

2000 feet away

Question 79 Marks: 1 The turbidity of water to be treated by slow sand filtration should not exceed Choose one answer. a. 50 NTU b. 25 NTU c. 10 NTU d. 30 NTU

25 NTU

Question 57 Marks: 1 In order to simplify cleanliness, window sills should be sloped toward the room and down at an angle of ______ degrees. Choose one answer. a. 30 b. 20 c. 80 d. 40

30

Question 42 Emergency shelters should provide a minimum of __ per person. a. 30 sq ft2 per person b. 20 sq ft2 per person c. overcrowding will not be concern in a disaster d. none of the above

30 sq ft2 per person

Question 6 Marks: 1 Alkalinity of water is desirable at levels of Choose one answer. a. 0 to 30 mg/l b. 0 to 500 mg/l c. 30 to 100 mg/l d. 0 to 5 mg/l

30 to 100 mg/l

Question 34 Hydrogen sulfide can be fatal at an exposure of a. 100 ppm b. 150 ppm c. 225 ppm d. 300 ppm

300 ppm

Question 71 Marks: 1 Hydrogen sulfide can be fatal at exposure of Choose one answer. a. 100 ppm b. 150 ppm c. 225 ppm d. 300 ppm

300 ppm

Question 26 Approximately what percentage of medical and dental X-rays do federal officials estimate to be unnecessary by federal officials? a. 25 b. 33 c. 40 d. 45

33

Question 23 Marks: 1 Air is vital to existence. In fact, humans breathe in a day's time an average of Choose one answer. a. 3 to 4 pounds of air b. 35 pounds of air c. 37 pounds of air d. 1,600 ft3 of air

35 pounds of air

Question 44 Marks: 1 Temperatures of ______ have been found satisfactory for the storage of refrigerated foods. Choose one answer. a. 32 degrees F to 38 degrees F b. 38 degrees F to 41 degrees F c. 40 degrees F to 45 degrees F d. 45 degrees F to 48 degrees F

38 degrees F to 41 degrees F

Question 75 To provide enough refuse for an incinerator to continuously operate, a refuse storage pit/bin must hold approximately a. 1 day of refuse b. 2 days of refuse c. 3 days of refuse d. 4 days of refuse

4 days of refuse

Question 69 Marks: 1 Any excavation in clay, loam, silt or sand more than ______ in depth should have side wall protection to prevent a cave-in. Choose one answer. a. 5 feet b. 4 feet c. 3 feet d. 2 1/2 feet

4 feet

Question 48 Marks: 1 In order to avoid pathogen growth and/or survival, food that is greater than ______ thick frozen or partially thawed should not be cooked. Choose one answer. a. 4 inches b. 3 inches c. 2 inches d. 1 inch

4 inches

Question 59 A single pair of rats are capable of producing __ litters of young per year a. 4 to 7 b. 3 to 6 c. 1 to 2 d. 8 to 12

4 to 7

Question 52 Bacteria may be carried in the digestive system of the housefly for as long as a. 1 week b. 3 months c. 4 weeks d. 2 days

4 weeks

Question 4 Just to maintain bodily functions, a person needs: a. 1-3 pints of water each day b. 4-12 pints of water each day c. 13-26 pints of water each day d. More than 26 pints of water each day

4-12 pints of water each day

Question 61 Which one of the following would probably be most cost effective in the prevention of lead poisoning of children? a. screening high risk children b. removing lead paint from home exteriors c. removal of soil around homes that had exterior lead paint d. covering bare soil or planting foundation shrubs

covering bare soil or planting foundation shrubs

Question 18 Which would not be considered domestic sewage? a. toilet waste b. kitchen sink waste c. dairy cattle waste d. laundry waste

dairy cattle waste

Question 10 The measure that is used to determine the loudness of a sound is: a. hertz b. decibel c. frequency d. amplitude

decibel

Question 1 Marks: 1 Dead animals are best disposed in Choose one answer. a. an incinerator or rendering plant b. a separate area of sanitary landfill c. a composting bed d. either a or b above

either a or b above

Question 60 Marks: 1 Which of the following are not major sources of sulfur dioxide pollution? Choose one answer. a. metal smelters b. coal and oil burning power plants c. refineries d. electrical substations

electrical substations

Question 16 Which statement is most correct: a. facultative bacteria live in aerobic conditions only b. facultative bacteria live in anaerobic conditions only c. facultative bacteria live in either aerobic or anaerobic conditions d. facultative bacteria produce their own oxygen

facultative bacteria live in either aerobic or anaerobic conditions

Question 36 The random inspection approach a. averages out in the end b. fails to focus on recurring problem establishments c. is the most comprehensive d. alleviated staff shortages

fails to focus on recurring problem establishments

Question 32 The orange pages of the emergency response guidebook lists a. guides to use when responding to hazardous materials transportation incidents b. emergency telephone numbers c. EPA hazardous materials personnel d. none of the above

guides to use when responding to hazardous materials transportation incidents

Question 33 The green pages of the emergency response guidebook lists a. EPA hazardous materials personnel b. hazardous materials in alphabetical order c. initial isolation and protective action distances d. hazardous material by ID number

initial isolation and protective action distances

Question 9 Which statement is true in regards to outlets and inlets on distributions boxes in sewage disposal systems? a. inlet must be 6 inches higher than outlet b. inlet must be 12 inches higher than outlet c. inlet must be at same level as outlet d. inlet and outlet level do not matter

inlet must be 6 inches higher than outlet

Question 36 Marks: 1 An effective pest management and weed control program focuses on the Choose one answer. a. strategic application of pesticides and herbicides with greatest toxicity b. use of a single pesticide or herbicide nontoxic to humans and pets c. integration of a combination of methods d. ability to acquire federal and state funding

integration of a combination of methods

Question 16 Scabies is an infectious disease of the skin caused by: a. bedbugs b. mites c. chiggers d. lice

mites

Question 35 Which of the following blood-feeding insects afflicts people engaged in outdoor activities and has larvae which develop while attached to rocks or other surfaces in fast moving streams? a. deerfly b. horsefly c. black fly d. mosquito

mosquito

Question 29 Which one of the following has not been associated with asbestos? a. lung cancer b. asbestosis c. multiple myeloma d. gastrointestinal cancer

multiple myeloma

Question 9 The factor used to determine the bromine residual with the chlorine test kit (DPD): a. multiply chlorine residual by 2.25 b. multiply chlorine residual by 4 c. divide chlorine residual by 4 d. divide chlorine residual by 2.5

multiply chlorine residual by 2.25

Question 54 Marks: 1 The most common type of noise measurement device used for initial surveys to provide rapid evaluation and identification of potential problem areas is the Choose one answer. a. octave-band analyzer b. noise dosimeter c. sound level meter d. sound analyzer

sound level meter

Question 49 Marks: 1 The Safe Alternatives Policy program Choose one answer. a. specifies alternatives for all ozone-depleting substances b. lists unacceptable alternatives to ozone-depleting substances c. considers only ozone depletion potential d. is based on global warming potential

specifies alternatives for all ozone-depleting substances

Question 27 Marks: 1 The amelioration of a disease to reduce disability or dependence resulting from it is termed Choose one answer. a. primary prevention b. secondary prevention c. tertiary prevention d. none of the above

tertiary prevention

Question 52 The amelioration of a disease to reduce disability or dependence resulting from it is called: a. first degree prevention b. second degree prevention c. tertiary prevention d. none of the above

tertiary prevention

Question 8 Which one of the following is considered by many to be the most insidious type of pollution? a. land b. air c. noise d. water

noise

Question 24 Which one of the following statements is false? a. noise can affect one's perception of time b. noise can increase the variability of work performance c. noise affects the quantity of work done d. noise makes it more difficult to remain alert

noise affects the quantity of work done

Question 11 Marks: 1 The term "rem" is short for Choose one answer. a. roentgen energy measure b. roentgen equivalent measure c. radiation energy measure d. none of the above

none of the above

Question 25 Marks: 1 A SWOT analysis is Choose one answer. a. an analysis of the future state b. an analysis of the current state c. a budget process d. none of the above

none of the above

Question 42 Marks: 1 Which of the following is best to use when sanitizing food contact equipment? Choose one answer. a. phenols b. copper c. zinc d. none of the above

none of the above

Question 16 Perhaps one of the greatest environmental issues of the late 20th century will be: a. depletion of the ozone layer b. the Greenhouse Effect c. increased use of chlorofluorocarbons d. increased amount of oxygen in the atmosphere

the Greenhouse Effect

Question 7 Marks: 1 The three essentials for combustion in an incinerator are Choose one answer. a. temperature, time, and heat b. time, temperature, and moisture c. temperature, heat and fuel d. time, temperature, and turbulence

time, temperature, and turbulence

Question 3 The noise most frequently considered as annoying by community residents is from: a. aircraft b. vehicles c. machinery d. neighbors

vehicles

Question 54 What etiologic agent for malaria is most fatal to man? a. plasmodium ovale b. plasmodium malariae c. plasmodium vivas d. plasmodium falciparum

plasmodium falciparum

Question 4 In general, noise levels are directly related to the: a. population density b. proximity of airports c. number of "boom boxes" sold d. industrialization of an area

population density

Question 18 Measure of the amount of water held by a rock or soil in pores or voids, expressed as % of the total volume: a. permeability b. specific retention c. porosity d. specific gravity

porosity

Question 51 Marks: 1 Halon-1211 is used primarily in ______. Choose one answer. a. portable fire extinguishers b. fixed fire suppression systems c. printed circuit board cleaning d. vapor degreasing

portable fire extinguishers

Question 97 Which of the following foods are not at high risk for transmitting listeriosis? a. soft cheese b. hot dogs c. raw vegetables d. potato chips

potato chips

Question 10 Methylene Blue Active Substance (MBAS) is a test to identify: a. hardness of water b. iron in water c. presence of detergents containing phosphates d. presence of conform bacteria

presence of detergents containing phosphates

Question 9 Marks: 1 ______ reduces the final volume of wastes. Choose one answer. a. compaction b. maceration c. pneumatic transport d. a and b above

a and b above

Question 1 Marks: 1 Biological safety equipment includes Choose one answer. a. biosafety cabinets b. non-retractable needles and syringes c. personal protective equipment d. a and c

a and c

Question 18 Marks: 1 Schistosomiasis is Choose one answer. a. a water contact disease b. a foodborne disease c. a milkborne disease d. an airborne disease

a water contact disease

Question 80 Marks: 1 Equipment can be disinfected by being in contact with a chlorine solution for at least Choose one answer. a. 7 seconds b. 10 seconds c. 15 seconds d. none of the above

10 seconds

Question 6 Marks: 1 When disinfecting valves and other parts of equipment with hot water, the water temperature should be ______ with a chlorine solution of ______ concentration. Choose one answer. a. 120 degrees F, 25 mg/l b. 75 degrees F, 75 mg/l c. 55 degrees F, 85 mg/l d. Cannot be determined without pH of the solution

120 degrees F, 25 mg/l

Question 43 Marks: 1 Hot water for the sanitizing of assembled equipment is not to be cooler than ______ at the end of the system. Choose one answer. a. 170 degrees F for 5 minutes b. 180 degrees F for 5 minutes c. 185 degrees F for 5 minutes d. 187 degrees F for 5 minutes

170 degrees F for 5 minutes

Question 25 Marks: 1 Lead poisoning is commonly associated with children living in homes built before Choose one answer. a. 1980 b. 1970 c. 1950 d. 1940

1970

Question 64 No person should be permitted to work in a trench or pit in sandy clay soil that has unsupported sides or banks higher than: a. 2 feet b. 3 feet c. 4 feet d. 5 feet

5 feet

Question 17 It is estimated that installation of water-saving plumbing devices in homes would save approximately: a. 100 gallons of water per day per 2-3 person household b. 75 gallons of water per day per 2-3 person household c. 55 gallons of water per day per 2-3 person household d. 25 gallons of water per day per 2-3 person household

55 gallons of water per day per 2-3 person household

Question 99 The distance between the field or tiles must be a minimum of __ in a treatment absorption field arrangement. a. 3 feet b. 6 feet c. 9 feet d. 12 feet

6 feet

Question 88 Dry stored goods should be stored off the floor at least __ to prevent their contamination. a. 2 inches b. 6 inches c. 12 inches d. 24 inches

6 inches

Question 18 The Emergency Planning and Community-Right-to-Know Act was prompted by the accident at: a. Three Mile Island b. Chernobyl c. Bhopal d. Sulfur dioxide

Chernobyl Bhopal

Question 49 Masonry reservoirs of rural water supplies are called: a. Leaching pits b. Cisterns c. Cesspools d. Seepage pits

Cisterns

Question 67 One of the most common reasons for the contamination of wells drilled through rock, clay or hardpan is a. Seepage of pollution through the soil b. Failure to seal well casing properly c. Porosity of the rock d. Use of inferior quality well casings

Failure to seal well casing properly

Question 15 Marks: 1 Ascaris ova may survive up to 7 hours in moist, warm soil. Choose one answer. a. True b. False

False

Question 17 Marks: 1 Marsh miasma is another name for the disease known as Legionella. Choose one answer. a. True b. False

False

Question 18 Marks: 1 Alpha particles have a negative electric charge. Choose one answer. a. True b. False

False

Question 84 What are examples of groundwater systems? a. Dug, bored, driver, drilled well; rock, sand or earth springs; infiltration galleries b. Water located no deeper than 400 feet c. Direct municipal wastewater systems d. Lake, reservoir, streams, ponds, river and creek supplies

Dug, bored, driver, drilled well; rock, sand or earth springs; infiltration galleries

Question 52 Which one of the following is not an anticipated benefit of regularly using a sunscreen of SPF 15 from infancy through age 18 is: a. Less sunburn b. Slower aging of the skin c. Lowered risk of melanoma d. Lowered risk of oat cell carcinoma

Lowered risk of oat cell carcinoma

Question 31 Marks: 1 Federal air quality standards for sulfur oxides in parts per million is Choose one answer. a. 3.0 b. 0.03 c. 0.3 d. 0.003

0.03

Question 48 The bottom of multiple-use pools should have a bottom slope not greater than __ when the depth is less than 5.5 feet a. 3 inch per 12 inch b. 5 inch per 12 inch c. 1 inch per 12 inch d. 2 inch per 12 inch

1 inch per 12 inch

Question 35 Setting levels of pollutants that are intended to safeguard human health yet allow a margin of safety to protect more vulnerable segments of the population are called: a. Primary standards b. Secondary standards c. Tertiary standards d. Remedial standards

Primary standards

Question 37 A major problem associated with the milling of uranium ore is the: a. Production of radioactive tailings b. Contamination of those who do the milling c. Tracking of radioactive particles to other areas, by workers d. Disposal of the waste products

Production of radioactive tailings

Question 21 The treatment system of a pool is typically recommended to be installed in which of the following flow arrangements? a. Skimmer or gutter line, main drain line, adjustment valves, disinfectant feeder, hair strainer, pump, filter, pH feeder pump, adjustable inlets b. Skimmer or gutter line, main drain line, adjustment valves, adjustments valves, hair strainer, pump, filter, disinfectant feeder, adjustable inlets c. Skimmer or gutter line, main drain line, adjustment valves, pH feeder pump, hair strainer, pump filter, disinfectant feeder, adjustable inlets d. Skimmer or gutter line, main drain line, adjustment valves, hair strainer, disinfectant feeder, filter aid pump, filters, disinfectant feeder, ph feeders, adjustment inlets

Skimmer or gutter line, main drain line, adjustment valves, hair strainer, disinfectant feeder, filter aid pump, filters, disinfectant feeder, ph feeders, adjustment inlets

Question 48 In terms of avoiding acid rainfall, in which of the areas would it be best to live? a. Southern California b. Upstate New York c. Rocky Mountain Region of Colorado d. Southern tip of Florida

Southern tip of Florida

Question 54 The Safe New Alternatives Policy program (SNAP) a. Specifies alternatives for all ozone-depleting substances b. List unacceptable alternatives to ozone-depleting substances c. Considers only ozone depletion potential d. Is based on global warming potential

Specifies alternatives for all ozone-depleting substances

Question 41 Marks: 1 The Council on Environmental Quality was established by Choose one answer. a. Title II of DSEA b. Title IV of PHSA c. Title VI of USEA d. Title II of NEPA

Title II of NEPA

Question 64 Under negligence law, the sanitarian owes the public a duty: a. To act as reasonable person b. To not hurt anyone c. To assist them in whatever manner possible d. To exercise high moral standards in the community

To act as reasonable person

Question 13 Marks: 1 House mice may carry the disease lymphocytic choriomeningitis. Choose one answer. a. True b. False

True

Question 62 Marks: 1 Many defects in x-ray units are easy to find and need no instruments. Choose one answer. a. True b. False

True

Question 20 What is the best means of inhibiting the growth of microorganisms in fresh meat? a. topical use of approved hypochlorite solutions b. exposure to ultraviolet light for 30 minutes c. chemical preservatives d. adequate refrigeration and cleanliness

adequate refrigeration and cleanliness

Question 12 Marks: 1 Radiation could scatter and bounce off the Choose one answer. a. floor b. wall c. ceiling d. all of the above

all of the above

Question 13 Marks: 1 Each water quality class has a ______ standard established. Choose one answer. a. physical b. chemical c. biological d. all of the above

all of the above

Question 13 Marks: 1 In order to determine the depth at which a sanitary landfill can be operated, which of the following must be determined? Choose one answer. a. location of bedrock b. groundwater table c. finished grade d. all of the above

all of the above

Question 14 Marks: 1 Compression or shredding of bulky objects before landfilling them will Choose one answer. a. improve compaction of the fill b. reduce land volume requirements c. allow for more uniform settlement d. all of the above

all of the above

Question 14 Marks: 1 Trickling filters can remove 90 to 95 percent of the __________ found in soil, water, and wastewater. Choose one answer. a. bacteria b. viruses c. cholera vibrio d. all of the above

all of the above

Question 17 Marks: 1 Chlorination of untreated wastewater is typically NOT an effective treatment for Choose one answer. a. entamoeba histolytica cysts b. giardia cysts c. tapeworm eggs d. all of the above

all of the above

Question 17 Marks: 1 Control of infectious, intestinal diseases of humans requires Choose one answer. a. provisions of safe water supplies b. proper waste disposal c. personal hygiene d. all of the above

all of the above

Question 31 Marks: 1 Sewer gas may contain Choose one answer. a. H2S b. methane c. carbon dioxide d. all of the above

all of the above

Question 49 Approved public swimming pools should have a. a pump that will recirculate the contents of the pool every 6 hours b. a filter that is designed for the output of the recirculation pump c. a disinfection system capable of dosing an outdoor pool at 10 mg/liter d. all of the above

all of the above

Question 49 Marks: 1 The best preventive measure for poison ivy, poison oak, and poison sumac is Choose one answer. a. recognition of the plant and its avoidance b. wearing clothing that appropriately covers the body c. applying a barrier skin cream d. all of the above

all of the above

Question 55 Marks: 1 Comprehensive planning includes Choose one answer. a. physical and social factors b. economic factors c. ecologic factors d. all of the above

all of the above

Question 63 Marks: 1 A city, village, or town may adopt a local sewage and waste ordinance as part of its ______ depending on its availability and effectiveness. Choose one answer. a. sanitary code b. zoning ordinance c. building code d. all of the above

all of the above

Question 64 Open dumps should be considered a. a cause of water pollution b. an odor and smoke nuisance c. a fire hazard d. all of the above

all of the above

Question 67 Marks: 1 Direct filtration can produce a good quality water at a lower cost provided that the water being treated is Choose one answer. a. low in suspended matter and turbidity b. low in color, coliform organisms, and plankton c. free of paper fiber d. all of the above

all of the above

Question 21 The primary method of eliminating house flies is a. proper use of insecticides b. block entry with screens c. application of sanitary practices d. eradication of male flies with sterile techniques

application of sanitary practices

Question 30 Marks: 1 Which of the following is not included in hazardous waste regulations? Choose one answer. a. domestic sewage b. flammable liquids c. corrosive liquids d. none of the above

domestic sewage

Question 60 A pigeon control program to eliminate nesting places should be preceded by a. baiting the area b. ectoparasite control c. trapping and humanely disposing of pigeons d. installing ground electrical wires

ectoparasite control

Question 35 A basic concept embodied in the Green Lights program is: a. boost the sale of light bulbs b. energy conservation c. increase the amount of light in the workplace d. switch lighting from white to cool green for worker comfort

energy conservation

Question 36 Marks: 1 The study of the occurrence, frequency, and distribution of disease is Choose one answer. a. entomology b. biology c. endocrinology d. epidemiology

epidemiology

Question 12 Marks: 1 In large pools with outlets more than 5 feet from the end wall, pool inlets should be located Choose one answer. a. every 30 feet b. every 10 feet c. every 20 feet d. every 5 feet

every 20 feet

Question 10 Which one of the following has not been shown to be associated with PCBs? a. live cancer b. fertility c. abnormal cell multiplication d. low birth weight

fertility

Question 62 Marks: 1 Which of the following is used to control the growth of algae and protozoa? Choose one answer. a. addition of copper sulfate b. aeration of the water c. addition of nitrates d. filtration

filtration

Question 29 Under RCRA, the EPA has developed standards and procedures that must be followed be all persons that: a. generate, transport, treat, store or dispose of hazardous waste b. generate, transport, store and dispose of hazardous waste c. generate, transport and dispose of hazardous waste d. treat of hazardous waste

generate, transport, treat, store or dispose of hazardous waste

Question 6 Marks: 1 A ______ is a dimensionless unit to express physical intensity or sound pressure levels. Choose one answer. a. noise level b. decibel c. hertz d. sound pressure level (SPL)

decibel

Question 57 Which animal is the primary reservoir for the newly discovered Hantavirus a. cats b. dogs c. parrots d. deer mice

deer mice

Question 76 Marks: 1 Contamination in a block of ice can be identified by ______ in the geometric center. Choose one answer. a. air bubbles b. discoloration c. crystallization d. separation of the core section

discoloration

Question 52 Marks: 1 The nitrogen dioxide below ______ ppm does not pose a health problem. Choose one answer. a. 0.15 b. 0.05 c. 0.50 d. 0.005

0.05

Question 102 A freezer unit for frozen food should maintain temperatures of __ or below. a. 32F b. 24F c. 10F d. 0F

0F

Question 19 By age 65 the number of Americans who experience hearing loss sufficient to affect communication is: a. 1 in 2 b. 1 in 3 c. 1 in 4 d. 1 in 5

1 in 4

Question 40 Marks: 1 An adult rat requires approximately ______ of food per day. Choose one answer. a. 1 pound b. 1 ounce c. 6 ounces d. 8 ounces

1 ounce

Question 80 Marks: 1 In distillation, sea water is heated to the boiling point and then into steam, usually under pressure, at a starting temperature of Choose one answer. a. 278 degrees F b. 260 degrees F c. 250 degrees F d. 258 degrees F

258 degrees F

Question 59 The incidence of tuberculosis in English laboratory workers working with M. tuberculosis was reported to be __ higher than for the general population a. 2 times b. 3 times c. 5 times d. 10 times

5 times

Question 7 Marks: 1 The median lethal dose of radiation (at which about 50% of the persons exposed will probably die in one month) is considered to be Choose one answer. a. 150 to 250 roentgens b. 350 to 550 roentgens c. 550 to 750 roentgens d. 1000 roentgens

550 to 750 roentgens

Question 50 Marks: 1 The EPA believes that only ______ of the waste stream can be recovered economically. Choose one answer. a. 26 percent b. 36 percent c. 56 percent d. 76 percent

56 percent

Question 21 What is the maximum accumulated time that time/temperature control for safety food can safely be exposed to the temperature danger zone? a. 2 hours b. 4 hours c. 6 hours d. 8 hours

6 hours

Question 23 A pool filtration system should filter the entire volume of water a minimum of every a. 2 or 3 hours b. 6 or 8 hours c. 10 or 12 hours d. 13 or 24 hours

6 or 8 hours

Question 45 Marks: 1 Domestic community water system pumps should be of such capacity as to deliver the average daily water demanded to the storage tank in Choose one answer. a. 4 to 8 hours b. 14 to 18 hours c. 6 to 12 hours d. 18 to 24 hours

6 to 12 hours

Question 93 By USEPA Standards, the pH of secondary treatment effluent shall be in the range of a. 6.8 to 7.4 b. 5 to 7 c. 6.5 to 7.4 d. 6 to 9

6 to 9

Question 59 Backsiphonage is likely to result if: a. There is unequal pressure on either side of a siphon b. A potable water line is connected with non-potable water supply used for fire fighting c. Pressure builds up in a sewer line because of blockage d. The water seal in a kitchen trap is siphoned out

A potable water line is connected with non-potable water supply used for fire fighting

Question 5 What portal of entry should a field sanitarian protect to avoid contracting Lyme disease? a. skin b. respiratory tract c. reproductive organs d. digestive tract

skin

Question 14 The insect infestation on humans known as pediculosis is caused by a. fleas b. mites c. ticks d. lice

lice

Question 49 Marks: 1 Subdivision plans involving individual wells and sewage disposal systems Choose one answer. a. comply with Federal laws only in subdivisions of 25 lots or less b. can never supersede state or federal laws by the use of title stipulation c. must be adapted to the topography and geological formations existing d. none of the above

must be adapted to the topography and geological formations existing

Question 1 Marks: 1 Poor health in a food handler exposes food to unacceptable risks of contamination; therefore, a physical exam should be required Choose one answer. a. every 3 years b. every 2 years c. every year d. none of the above

none of the above

Question 27 Marks: 1 Since competent direction is essential to a divisional program's effectiveness, it is important to offer Choose one answer. a. bonus salaries b. marginal salaries c. a structured, incremental pay plan d. none of the above

none of the above

Question 2 It is generally accepted that the most widespread chemical contaminant known is: a. dioxin b. mercury c. polychlorinated biphenyls d. lead

polychlorinated biphenyls

Question 67 Quantitative risk assessments usually measure human exposure through all of the following except: a. Computer models b. Blood or urine analyses c. Personal surveys d. Toxicological analyses

Computer models

Question 53 A license can be revoked for all reasons except: a. Fraudulently obtain b. Conviction of a crime not related to intended purpose of license c. Violations of conditions of license d. Engaged in conduct presenting danger to public health or safety

Conviction of a crime not related to intended purpose of license

Question 17 Which one of the following is true? a. High-level radiation exposure is generally delivered over a long period of time b. Radiation absorbed over a short period of time is less harmful than radiation absorbed over a long period of time c. Low levels of ionizing radiation have a potential to cause cell damage rather than cell deaths d. Soviet citizens exposed to radiation in Chernobyl are the little interest to the scientific community today

Low levels of ionizing radiation have a potential to cause cell damage rather than cell deaths

Question 5 Marks: 1 In testing for residual chlorine, which of the following determines free available chlorine with minimal interference from combined chlorine, iron, nitrates, and nitrites? Choose one answer. a. leuco crystal violet method b. stabilized neutral orthotolidine (SNORT) method c. DPD-colormetric method d. DPD-titrimetric method

DPD-colormetric method

Question 15 The best management for intensely radioactive isotopes that have very short half-lives is: a. Seal them in concrete and bury them b. Isolate them from human contact during their acute phase c. Bury them in specialized locations away from human habitats d. Stop producing machines that requires the use of these radioactive isotopes

Isolate them from human contact during their acute phase

Question 43 Marks: 1 A primary pollutant is one that is formed in the atmosphere as a result of chemical reactions. Choose one answer. a. True b. False

False

Question 45 Marks: 1 A project study is another term for Acomprehensive regional planning.@ Choose one answer. a. True b. False

False

Question 48 A sampling train is a device used to measured emissions from locomotives. a. True b. False

False

Question 87 The nature of all radiation is the same, and the difference lies only in the frequency and wave length. a. True b. False

False

Question 41 The reason fallout levels from Chernobyl were considerably less than might have been anticipated was: a. Favorable weather conditions prevailed b. There was a river nearby that diluted the waste quickly c. The explosion blew the material away from population centers d. The immediate reaction of Soviet disaster fighters

Favorable weather conditions prevailed

Question 13 What contaminant may accompany methane production if large amounts of sulfate are also present? a. CuSO4 b. sodium sulfate c. H2S d. hydrogen cyanide

H2S

Question 60 Marks: 1 All meat and poultry plants must develop and implement a system of preventative controls known as Choose one answer. a. Pathogen reduction b. NFSMP c. HACCP d. Risk assessment

HACCP

Question 68 Marks: 1 ______ is considered to be the least damaging to the stratospheric ozone layer. Choose one answer. a. CFCs b. methyl bromide c. halon d. HCFCs

HCFCs

Question 28 Marks: 1 When chlorine is added to water Choose one answer. a. chlorine gas is formed b. HOCl is considered the primary product c. HCl is considered the primary product d. ozone is produced in large quantities

HOCl is considered the primary product

Question 74 Marks: 1 ______ developed a set of guidelines to aid urban areas and cities assess the impacts of development actions. Choose one answer. a. NEPA b. HUD c. the Council on Environmental Quality d. the Overseas Development Council

HUD

Question 44 The laboratory reports a positive coliform test that exceeds permissible limits on a bottle of pasteurized milk. What does this indicate? a. Improper bactericidal treatment of the equipment b. Improper virucidal treatment of the equipment c. A contaminated water supply d. A contaminated food supply

Improper bactericidal treatment of the equipment

Question 65 The major controversy associated with injury as the result of microwave exposure deals with: a. Leukemia b. High levels of microwave absorption c. Prolonged low levels of exposure d. Development of cataracts

Prolonged low levels of exposure

Question 11 Perhaps our single most significant source of radiation exposure is: a. Radon b. Cosmic radiation c. Alpha particles d. Gamma rays

Radon

Question 31 Algae development will cause all conditions except: a. Reduced water clarity b. Increased chlorine consumption c. Rapid fall in pH d. Slimy growth

Rapid fall in pH

Question 39 Aerobic bacteria require all of the following nutrients except: a. Carbon b. Magnesium c. Phosphorous d. nitrogen

Magnesium

Question 66 Which one of the following does not seem to be associated with exposure to microwaves? a. Cataracts b. Chromosomal abnormalities c. Birth defects d. Men fathering only male offspring

Men fathering only male offspring

Question 31 Marks: 1 What does RCRA stand for? Choose one answer. a. Recovery, Conservation, and Refuse Administration b. Radioactive Chemical Recovery Administration c. Radioactive Chemical Recovery Act d. Resource Conservation and Recovery Act

Resource Conservation and Recovery Act

Question 40 Which federal law regulates underground storage tanks for hazardous substances? a. Clean Water Act b. Federal Water Pollution Control Act c. Resource Conservation and Recovery Act d. Solid Waste Disposal Act

Resource Conservation and Recovery Act

Question 22 The major effects of air pollution on human health deal with: a. Skin irritations b. Heart problems c. Eye problems d. Respiratory problems

Respiratory problems

Question 65 The type of filter that is recommended for use at small communities and rural places is the a. Rapid sand filter b. Pressure filter c. Slow sand filter d. Diatomaceous earth filter

Slow sand filter

Question 9 On-the-job education should start with planned, routine, intensive in-service training of Choose one answer. a. division directors b. owners of food service facilities c. all field and office personnel d. septic tank contractors

all field and office personnel

Question 19 Marks: 1 After a septic tank has been cleaned, it should not be scrubbed and disinfected. Why? Choose one answer. a. the sludge sticking to the insides would have a seeding effect and assist in renewing the bacterial activity b. you cannot pay anybody enough money to crawl inside one to clean it c. it would be considered a safety hazard d. a and c above

a and c above

Question 66 Marks: 1 Pasteurized milk quality is indicated by Choose one answer. a. direct microscopic count, coliform test, standard plate count b. appearance, thermoduric, determination c. phosphatase test, taste and odor tests d. a and c above

a and c above

Question 5 Marks: 1 An illness due to a specific infectious agent or its toxic product which is transmitted from a reservoir to a susceptible host either directly or indirectly is called Choose one answer. a. an infectious disease b. a communicable disease c. a genetic disease d. a noncommunicable disease

a communicable disease

Question 1 Marks: 1 Public awareness demands a quality of environment that provides fundamental needs such as which of the following? Choose one answer. a. pure water, clean air, pure food b. decent housing c. safe recreational facilities d. all of the above

all of the above

Question 11 Marks: 1 The wastewater generated from washing out refuse bins and containers Choose one answer. a. can be disposed of with the garbage b. must pass through a grease trap before entering a sewerage system c. should not be allowed to run onto the surface of the ground d. all of the above

all of the above

Question 12 During nuclear emergencies __ provides technical support. a. EPA b. DOE c. FDA d. all of the above

all of the above

Question 12 Marks: 1 Legal proceedings to enforce a law may include Choose one answer. a. issuance of an order to eliminate a violation b. suspension of a permit c. civil sanctions d. all of the above

all of the above

Question 12 Marks: 1 The purpose of the National Environmental Policy Act is to Choose one answer. a. encourage productive and enjoyable interaction between human and the environment b. encourage measures that prevent or eliminate damage to the environment c. encourage greater understanding of the environment d. all of the above

all of the above

Question 15 PCBs have been used in which systems/devices? a. lubrication systems b. transformers c. heat transfer systems d. all of the above

all of the above

Question 15 Marks: 1 Cross-connections are frequent causes of disease resulting from Choose one answer. a. backsiphonage of contaminated chemicals b. backflow of biologically contaminated liquids c. connection of the water supply to the sewer system d. all of the above

all of the above

Question 18 Marks: 1 The meteorological elements that have the most direct and significant effects on the distribution of air pollutants are Choose one answer. a. solar radiation b. wind speed and direction c. precipitation and stability d. all of the above

all of the above

Question 18 Marks: 1 The permeability of soil is directly related to the __________ of the soil. Choose one answer. a. chemical composition b. color and texture c. granular structure d. all of the above

all of the above

Question 2 Marks: 1 The gains in life expectancy between 1900 (48 years) and 1974 (72 years) have occurred mostly in the early years and are due to Choose one answer. a. sanitation b. nutrition c. chemotherapy d. all of the above

all of the above

Question 20 Marks: 1 Some specific measures that can be used to reduce the effect of highway noise include Choose one answer. a. setting lower speed limits for certain sections of a highway b. establishing alternate truck routes c. enclosure of highways going through residential areas d. all of the above

all of the above

Question 20 Marks: 1 Which of the following are sources of radiation? Choose one answer. a. natural background b. radioactive fallout from nuclear testing or use of nuclear devices c. radiation from medical diagnosis and treatment, industrial, or other man-made sources d. all of the above

all of the above

Question 21 Marks: 1 The energy of ionizing radiation is measured in Choose one answer. a. electron volts b. thousands of electron volts c. millions of electron volts d. all of the above

all of the above

Question 21 Marks: 1 The septic tank functions as a Choose one answer. a. a biological treatment system b. a sedimentation tank c. a conditioning tank d. all of the above

all of the above

Question 23 Marks: 1 Wastes generated by the construction industry include Choose one answer. a. ignitable paint wastes b. spent solvents c. strong acids and bases d. all of the above

all of the above

Question 25 Marks: 1 To have a successful environmental control service, the retention of competent personnel is a primary concern. Which of the following is (are) required to retain competent personnel? Choose one answer. a. adequate salaries b. pleasant, stimulating working conditions c. a dynamic and challenging program d. all of the above

all of the above

Question 32 Marks: 1 The average amount of solid waste generated, collected, and disposed of from a particular area is dependent on many local factors such as Choose one answer. a. time of the year b. education and economic status of the people c. whether the area is urban or rural d. all of the above

all of the above

Question 32 Marks: 1 When the whole body is irradiated, the most radiosensitive area(s) is (are) Choose one answer. a. spleen b. lymph nodes c. bone marrow d. all of the above

all of the above

Question 34 Marks: 1 In the usage of septic-tank additives, which of the following compounds is not recommended? Choose one answer. a. sulfuric acid b. methylene chloride c. trichloroethane d. all of the above

all of the above

Question 34 Marks: 1 Systems used for treatment and disposal of animal wastes include Choose one answer. a. field spreading, oxidation ditch, and incineration b. plow-furrow cover, aerated lagoon, and wet oxidation c. irrigation, anaerobic digestion, and drying d. all of the above

all of the above

Question 4 Marks: 1 Fluorocarbons in the atmosphere are of concern because they may Choose one answer. a. react with the ozone in the upper atmosphere, thus reducing the total amount of ozone available b. cause an increase in ultraviolet radiation reaching the earth c. cause an increase in skin cancers and changes in our climate, animal, and plant life d. all of the above

all of the above

Question 4 Marks: 1 Strategic planning is a tool that helps organizations Choose one answer. a. decide where they want to be in the future b. locate where they are now c. plan how to get to the desired state in the future d. all of the above

all of the above

Question 41 Under which conditions would a pesticide operator wear a respirator? a. exposed to small amounts of toxics for short time b. exposed to large amounts of toxics for a short time c. exposed to large amounts of toxics for a short time d. all of the above

all of the above

Question 45 All patients should be considered to be potentially infectious for HIV and other bloodborne pathogens. Therefore you should a. wear appropriate personal protective equipment b. properly dispose of all sharps c. wash your hands regularly d. all of the above

all of the above

Question 45 Marks: 1 Air pollution is the presence of ______ in the outside air in amounts that are injurious or detrimental to humans, animals, plants, or property. Choose one answer. a. solids b. gases c. liquids d. all of the above

all of the above

Question 47 Marks: 1 Regarding emergency radiation exposure, the state has a responsibility to: Choose one answer. a. carry out training b. evaluate and make recommendations for program improvement c. require that a competent program can be conducted d. all of the above

all of the above

Question 48 Marks: 1 Low-pressure, vacuum and cluster systems may be used Choose one answer. a. where soil is unsuitable for septic-tank systems b. in hilly areas c. in high-density recreational areas d. all of the above

all of the above

Question 51 CDC advocates a multitier approach for environmental management of lead threats. This approach has which of the following steps a. investigation and reduction of hazards b. near universal screening c. identification and remediation of hazards d. all of the above

all of the above

Question 53 The best control of formaldehyde air pollution in the home is a. avoidance of the use of formaldehyde containing products b. the coating and sealing of materials containing formaldehyde c. increasing the amount of outside air d. all of the above

all of the above

Question 53 Marks: 1 Which of the following exposures should be considered in assessing radiation hazard? Choose one answer. a. natural background b. medical or occupational c. radiation ingested through air, water, and food d. all of the above

all of the above

Question 54 Wasps are usually attracted to a. bright-colored clothing b. hair oils c. smooth-textured clothing d. all of the above

all of the above

Question 6 Marks: 1 Malaria prevention programs have been losing their effectiveness in many countries mainly because of Choose one answer. a. inadequate funding and research b. adaption of mosquitoes to new environments c. resistance to certain insecticides and resistance of Plasmodium falciparum parasites to drugs used to prevent and treat malarial infections d. all of the above

all of the above

Question 60 The goal of environmental health programs should be a. the prevention of disease b. the enjoyment of living c. the preservation of comfort d. all of the above

all of the above

Question 65 Marks: 1 Factors that could determine the effect of radiation on the body include Choose one answer. a. rate of absorption b. individual variability c. nutrition, oxygen tension, metabolic state d. all of the above

all of the above

Question 67 Composting is the controlled decay of organic matter that may come from a. sewage sludge b. agricultural waster c. organic industrial waste d. all of the above

all of the above

Question 7 Marks: 1 What led to the formation of the NEPA? Choose one answer. a. public concern over environmental pollution b. scientific support c. professional prodding and support d. all of the above

all of the above

Question 72 Primary sedimentation can remove found in soil, water and wastewater. a. 50 to 90 percent of the bacteria b. 30 to 50 percent of the acaris c. 80 percent of the schistosomes d. all of the above

all of the above

Question 72 hazardous wastes include which of the following types of substances? a. chemical and biological b. radioactive c. explosive d. all of the above

all of the above

Question 72 Marks: 1 Proper facility lighting is essential for Choose one answer. a. cleanliness b. accident prevention c. fatigue reduction d. all of the above

all of the above

Question 73 The most common problems associated with the disposal of hazardous waste are a. public opposition and spills b. groundwater pollution from lagoon and unauthorized dumping c. leachate from landfills, dumps, sludge disposal and other land disposal systems d. all of the above

all of the above

Question 73 Wastewater is the used water from a home or community and the strength is expressed in terms of a. BOD b. COD c. suspended solids d. all of the above

all of the above

Question 74 Marks: 1 Mussels from ______ contain a chemical poison during certain times of the year which is not destroyed during cooking. Choose one answer. a. the Pacific Coast b. England c. Europe d. all of the above

all of the above

Question 75 Marks: 1 Quality control of milk includes which of the following? Choose one answer. a. transportation, herd health b. milk handling, processing c. distribution, refrigeration d. all of the above

all of the above

Question 75 Marks: 1 The safe distance between a well and a waste disposal system is dependant on Choose one answer. a. chemical processes b. physical processes c. biological processes d. all of the above

all of the above

Question 8 Marks: 1 Rattus norvegicus is also referred to as the Choose one answer. a. sewer rat b. norway rat c. brown rat d. all of the above

all of the above

Question 68 Marks: 1 Which minerals and chemicals cause problems in ice manufacturing? Choose one answer. a. calcium and silica b. iron and magnesium carbonates c. aluminum oxide and manganese d. all the above

all the above

Question 28 Marks: 1 Radon is detected in a home through measurment of Choose one answer. a. geiger rays b. beta particles c. alpha particles d. UV rays

alpha particles

Question 9 The louder the sound, the greater the: a. frequency b. amplitude c. timbre d. pitch

amplitude

Question 59 Marks: 1 Disinfection or chlorination of sewage effluent is Choose one answer. a. always necessary b. a substitute for adequate wastewater treatment c. an added safeguard to reduce the risk of disease transmission where the probability exists d. usually non-toxic to freshwater, marine, and estuarine aquatic organisms in minute concentrations

an added safeguard to reduce the risk of disease transmission where the probability exists

Question 78 The chimney of the house should be a minimum of __ above the highest structure of the home. a. Five feet b. Three feet c. 18 inches d. Level with the eve of the house

Three feet

Question 55 Basal and squamous cell carcinomas are most commonly associated with exposure to: a. Tobacco smoke b. UVB c. Nuclear waste d. Asbestos

UVB

Question 6 The factor that will ultimately result in chronic water shortage is: a. The amount of precipitation in a region b. The conservation practices in a region c. Unchecked population size d. The amount of business and industry in a region

Unchecked population size

Question 66 It is estimated that less than 62% of water and foodborne diseases are not reported. a. True b. False

True

Question 8 Residents of which of the following cities would probably receive the most exposure from naturally occurring radioactive minerals? a. Portland, Oregon b. Vale, California c. Fort Myers, Florida d. Chicago, Illinois

Vale, California

Question 75 A stud is a unit of building construction that is intended as a: a. Vertical support b. Horizontal support c. Roof only support d. Support for sheet rock

Vertical support

Question 25 Which one of the following statements is true? a. adults are wakened by noise more easily than children b. healthy individuals are more affected by noise than ill persons c. middle-aged individuals are more sensitive to noise than are elderly persons d. men ore more easily disturbed by noise than women

adults are wakened by noise more easily than children

Question 75 A major problem associated with methyl mercury is its: a. affinity for fetal tissue b. ability to become friable c. use in manufacturing d. inclusion house paint

affinity for fetal tissue

Question 55 Marks: 1 A properly designed and controlled incinerator is satisfactory for burning combustible refuse as long as Choose one answer. a. the incinerator is not located in the downtown area b. sufficient quantities of refuse can be provided c. air pollution standards can be met d. the furnace is cooled regularly

air pollution standards can be met

Question 40 Lasso is the trademarks for a. acrolein b. atrazine c. alachlor d. duiron

alachlor

Question 4 In valleys and ravines, what method of landfilling is considered the best? a. trench b. low area c. area d. wet area

area

Question 46 Which disease can be transmitted by birds? a. yellow fever b. psittacosis c. ornithosis d. b and c above

b and c above

Question 30 Marks: 1 Which of the following allows for 95 percent or more volume reduction of municipal solid wastes? Choose one answer. a. incineration b. pyrolysis c. high-temperature incineration d. both b and c above

both b and c above

Question 29 Marks: 1 Beta radiation is commonly eliminated by Choose one answer. a. lead b. both glass or plastic and aluminum c. glass d. aluminum

both glass or plastic and aluminum

Question 48 Marks: 1 Neutrons can have Choose one answer. a. biological effects b. the ability to make other substances radioactive c. both of the above d. none of the above

both of the above

Question 14 The best method to eliminate swimmers itch is: a. apply antibiotics to the water b. break the life chain of the schistosome c. raise the pH to destroy the snails d. destroy all aquatic vegetation so the cercariae can't mature

break the life chain of the schistosome

Question 27 Marks: 1 Which of the following items are not natural topographic features? Choose one answer. a. rivers b. canals c. foliages d. hills

canals

Question 24 Marks: 1 Examples of thermal destruction processes in addition to incineration are Choose one answer. a. cement kiln b. chemical treatment c. separation d. none of the above

cement kiln

Question 41 In the APHA method of measuring housing quality, which of the following would be considered a minor deficiency if found inadequate? a. central heating b. water supply located outside of living unit c. lack of windows to the outside d. minimum of two exits in case of fire

central heating

Question 5 A secchi disk is used to determine: a. pH b. clarity in recreational waters c. coli form contamination d. heavy metals

clarity in recreational waters

Question 57 The key to an effective, long-term, rodent control program is a. poisoning b. community sanitation c. trapping d. community sewage treatment

community sanitation

Question 39 The legal authority to conduct a routine environmental health inspection: a. explicitly stated in the US Constitution b. inherent in a health agency c. granted by judicial decree d. delegated by the legislature

delegated by the legislature

Question 38 Which one of the following is not a way of remedying an asbestos hazard? a. demolition b. removal c. enclosure d. encapsulation

demolition

Question 38 All of the following are considered advantages of using the shredded solid waste landfill method except: a. it does not cause odors b. it may require daily earth cover c. it will readily absorb precipitation d. it reduces insect breeding

it will readily absorb precipitation

Question 79 Which of the following is not considered an advantage to using shredded solid waste landfill? a. it does not cause odors b. it may not require daily earth cover c. it will readily absorb precipitation d. it reduces insect breeding

it will readily absorb precipitation

Question 50 Which is not an organophosphate pesticide? a. parathion b. TEPP c. DDVP d. lindane

lindane

Question 3 Marks: 1 The Overseas Development Council has created a Physical Quality of Life Index by combining assessments of Choose one answer. a. water supplies with agriculture production b. environmental factors with population c. literacy rates, life expectancy and infant mortality rates d. economic standards and geographic location

literacy rates, life expectancy and infant mortality rates

Question 17 The best method to reduce diving accidents is to: a. shorten the distance between the board and water b. slope the bottom of the pool c. use s safety factor ratio for depth of water to height of board d. develop diving training and education programs

develop diving training and education programs

Question 17 Which of the following statements is true? a. dioxin is manufactured as a component of hexachlorophene b. dioxin had not been shown to be related to human deaths c. dioxin is formed as a unwanted by-product of herbicide manufacturing d. dioxin can enter the atmosphere through evaporation

dioxin is formed as a unwanted by-product of herbicide manufacturing

Question 26 Marks: 1 Which of the following wells is considered the most dependable source of water and is less likely to become contaminated? Choose one answer. a. driven well b. bored well c. drilled well d. dug well

drilled well

Question 41 An individual's right to be treated with a least a minimum of decency and fairness by governmental officials is guaranteed by the provision of: a. States rights b. home rule c. equal protection d. due process

due process

Question 39 Marks: 1 Trihalomethanes are synthetic organic chemicals primarily created Choose one answer. a. during the coagulation process b. during the pre-chlorination process c. during reverse osmosis d. during the post-chlorination process

during the pre-chlorination process

Question 42 Marks: 1 The most suitable soil for cover material at a landfill site is one that is Choose one answer. a. easily worked and minimizes infiltration b. relatively porous and rich in nitrogen c. most convenient to the site and always available d. dug from the trenches where the waste will be deposited

easily worked and minimizes infiltration

Question 15 Marks: 1 In order to perform an evaluation, the data collected must be reliable. Which of the following is not a definitive characteristic of reliability? Choose one answer. a. consistent b. easy to obtain c. reproducible d. dependable

easy to obtain

Question 61 A major process for the prevention of respiratory disease of susceptible persons is a. isolation b. hospitalization c. immunization d. education

education

Question 61 Marks: 1 The primary responsibility of food service management is Choose one answer. a. trust and delegation of responsibilities b. recognition of sanitary inspections c. approval and provisions for legal responsibilities d. education and supervision of employees

education and supervision of employees

Question 37 Environmental health regulatory staff must be __ first and foremost. a. enforcers b. educators c. undergraduates d. legislators

educators

Question 18 Marks: 1 The acidity-alkalinity balance affects eye irritation, water coagulation and the Choose one answer. a. effectiveness of chlorine b. ambient water temperature c. effectiveness of the skimmers d. evaporation rate

effectiveness of chlorine

Question 25 The acidity alkalinity balance affects eye irritation water coagulation and the a. effectiveness of chlorine b. ambient water temperature c. effectives of the skimmers d. evaporation rate

effectiveness of chlorine

Question 46 Salvato recommends at least one water closet for each __ beds in a hospital or nursing home. a. two b. four c. six d. eight

eight

Question 29 The most effective measures for mosquito control are dependent upon the: a. elimination of breeding places b. trapping of adult insects c. use of new types of insecticides to destroy adult insects d. use of new repellents

elimination of breeding places

Question 25 The one of the following diseases which is caused by a virus a. encephalitis b. malaria c. Q fever d. tetanus

encephalitis

Question 17 Marks: 1 Standards must be scientifically supported, understandable, measurable and Choose one answer. a. traditional b. acceptable to all parties involved c. enforceable d. rigid

enforceable

Question 19 Marks: 1 Letter and report writing are effective means of acquainting ______ with the diversity and complexity of a facility's problems. Choose one answer. a. local officials b. establishment owners c. the general public d. lawmakers

establishment owners

Question 36 Marks: 1 Water containing nitrates generally indicates Choose one answer. a. a nearby cesspool b. evidence of agricultural/previous pollution c. a chemical leak d. a nearby slaughterhouse

evidence of agricultural/previous pollution

Question 1 Which hazard is related to size reduction method for solid waste? a. toxic gases b. rodent problems c. insect infestations d. explosions

explosions

Question 75 Marks: 1 The preferred method for water and sewerage service for a subdivision is to Choose one answer. a. develop a central water system b. extend existing water lines and construct individual sewage system c. extend existing water lines and community sewer lines d. require individual on-site facilities

extend existing water lines and community sewer lines

Question 52 Marks: 1 One of the most common reasons for the contamination of wells drilled through rock, clay, or hardpan is Choose one answer. a. seepage of pollutants through soil b. failure to seal well casings properly c. porosity of the rock d. use of inferior quality well casings

failure to seal well casings properly

Question 43 Endemic typhus is spread by the: a. roach b. mosquito c. tick d. flea

flea

Question 8 Two insect parasites of rodents which transmit disease to man are a. mite and chigger b. mosquito and tick c. flea and louse d. roach and fly

flea and louse

Question 22 Marks: 1 ______ have been known to cause crippling skeletal damage to cattle through ingested contaminated vegetation. Choose one answer. a. sulfides b. fluorides c. nitrates d. chlorides

fluorides

Question 10 Marks: 1 Which of the following is not used to disinfect water? Choose one answer. a. chlorine b. bromine c. fluorine d. iodine

fluorine

Question 15 What is the federal agency that regulates food additives? a. center for disease control and prevention b. consumer product safety commission c. department of agriculture d. food and drug administration

food and drug administration

Question 42 Marks: 1 In the United States, the Ringlemann smoke chart consists of how many rectangular charts? Choose one answer. a. three b. four c. five d. six

four

Question 24 Marks: 1 The main drain should have a grate that is ______ the area of the discharge pipe to prevent dangerous suction effects. Choose one answer. a. four times b. five times c. six times d. two times

four times

Question 31 The main drain should have a grate that is ___ the area of the discharge pipe to prevent dangerous suction effects. a. four times b. five times c. six times d. two times

four times

Question 39 Which one of the following gases seems to present the greatest challenge in terms of elimination of its use? a. halon b. freon c. argon d. hydrobromofluorocarbon

freon

Question 15 Marks: 1 Which of the following is true about garbage stands? Choose one answer. a. garbage stands should be screened to keep out birds and rodents b. garbage cans should be painted for easy detection by collection crews c. garbage stands should be convenient to the kitchen, in an airy shaded location d. built-in garbage or trash boxes, bins, or sheds are recommended

garbage stands should be convenient to the kitchen, in an airy shaded location

Question 32 For which one of the following has no direct, causative link been conclusively established: a. lung cancer b. asbestosis c. multiple myeloma d. gastrointestinal cancer

gastrointestinal cancer

Question 16 Marks: 1 The use of a cesspool is prohibited due to Choose one answer. a. potential for odor b. cost c. space required d. greater potential for groundwater contamination

greater potential for groundwater contamination

Question 32 Marks: 1 The sources of water supply are divided into which of the following major classifications? Choose one answer. a. spring water and well water b. groundwater and surface water c. rainwater and river water d. demineralized water and lake water

groundwater and surface water

Question 14 The most common problem associated with the disposal of hazardous waste is: a. leaching from landfills and dumps b. breeding ground for insects c. groundwater contamination d. unauthorized dumping

groundwater contamination

Question 93 In case of emergency, raw milk may be rendered safe for drinking if __ and then immediately cooled. a. heated in a water bath to a temperature of 165F b. heated after bottling to a temperature of 165F c. heated to 145F before bottling d. heated to 145F after bottling

heated in a water bath to a temperature of 165F

Question 23 Untreated surface disposal of residential sewage is most likely to be a cause of: a. anthrax b. botulism c. plaque d. hepatitis

hepatitis

Question 58 Which one of the following does not appear to be a "legacy of childhood lead exposure?" a. high drop-out rate b. high incidence of reading disability c. high class rank d. high absenteeism

high class rank

Question 50 All of the following are characteristics of an ideal shielding material for lead paint surfaces except a. vermin-proof b. low cost c. high density and mass d. non-toxic

high density and mass

Question 16 The first type of hearing sensitivity to become damaged as a result of excessive noise exposure is sensitivity to: a. low frequencies b. middle frequencies c. speech level frequencies d. high frequencies

high frequencies

Question 38 When an order has been ignored, the next step is to a. issue a second order b. hold an administrative hearing c. obtain a subpoena d. obtain a warrant

hold an administrative hearing

Question 22 Marks: 1 The four major causes of death among all age groups of Americans include all of the following except Choose one answer. a. homicide b. accidents c. malignant neoplasms d. heart disease

homicide

Question 11 Marks: 1 Which of the following are not typically members of the infection control committee Choose one answer. a. hospital CEO b. environmental control officer c. infection control nurse d. a physician representative

hospital CEO

Question 65 The home grinding system shreds garbage into small particles while being mixed with water and is discharged to the a. ocean b. sanitary landfill c. house sewer d. high-temperature incinerator

house sewer

Question 29 The first emission standards for automobiles dealt with emission of? a. Nitrogen oxide b. Sulfur dioxide c. Carbon dioxide d. hydrocarbons

hydrocarbons

Question 18 Marks: 1 The transfer station should be located ______ of the collection service area. Choose one answer. a. on the perimeter b. at the busiest location c. in the center d. none of the above

in the center

Question 35 When aerobic synthesis occurs in a landfill, it is expected that the refuse is: a. in the early stages of decomposition b. biologically stable c. chemically inert d. near the final stage of decomposition

in the early stages of decomposition

Question 16 Marks: 1 Which of the following is the primary cause of indoor air quality problems? Choose one answer. a. inadequate ventilation b. contaminated outside air c. radon d. ragweed

inadequate ventilation

Question 37 Which of the following is not an option for hazardous waste minimization? Choose one answer. a. treatment b. waste reduction at the point of generation c. process modification d. increase production

increase production

Question 37 Marks: 1 After the absorption field has failed, which of the following will NOT correct or repair the field? Choose one answer. a. reduce the amount of water used in the home b. increase the water pressure c. pump the septic tank d. use low-flow shower heads

increase the water pressure

Question 37 Marks: 1 Added moisture used in maceration ______ the handling and haul costs of solid waste Choose one answer. a. increases b. decreases c. does not change d. sometimes increases or sometimes doesn=t change

increases

Question 37 Marks: 1 The interval between exposure to an infectious agent and the appearance of the first symptom is called the Choose one answer. a. lag time b. susceptible period c. incubation period d. primary period

incubation period

Question 8 Marks: 1 Cross-connection controls include air gaps, backflow preventers, vacuum breakers and Choose one answer. a. gate valves b. indirect waste piping c. air vents d. water meters

indirect waste piping

Question 17 Marks: 1 ______ assists in economic growth by increasing personal income, retail sales, and bank deposits. Choose one answer. a. development of local business b. rezoning c. industry d. subdividing

industry

Question 50 Lead poisoning is most acute for: a. infants b. school-age children c. adolescents d. young adults

infants

Question 48 Most pesticide deaths in children and adults in the US are due to a. inhalation b. ingestion c. absorption d. injection

inhalation

Question 69 The most common occupational exposure to mercury is through: a. inhalation b. absorption c. ingestion d. inoculation

inhalation

Question 28 Marks: 1 Plants employing trickling filters, activated sludge, and spray irrigation present a possible health hazard to their employees due to Choose one answer. a. strong caustic chemicals b. diseases due to handling of fecal matter c. microorganisms entering the skin through pores d. inhalation of airborne microorganisms

inhalation of airborne microorganisms

Question 51 The objective(s) in pest control should be a. integrated pest management involving the use of a combination of educational, cultural, biological, physical, chemical and legal measures, as appropriate b. to control the life cycles and conditions favorable to growth of pests so they will not interfere or harm humans and the environment c. to establish a world-wide network of professionals dedicated to the elimination of pest nuisance and annoyance d. all of the above

integrated pest management involving the use of a combination of educational, cultural, biological, physical, chemical and legal measures, as appropriate

Question 21 Marks: 1 Escherichia coli 0157:H7 can be found thriving in the Choose one answer. a. intestines of man and animals b. water c. soil d. air

intestines of man and animals

Question 40 Marks: 1 The accumulation or increased concentration of a continuously emitted pollutant is Choose one answer. a. referred to as episodic filtration b. referred to as explosive stockpiling and is potentially a very hazardous situation if left unchecked c. directly proportional to wind speed d. inversely proportional to wind speed

inversely proportional to wind speed

Question 77 Individuals particularly susceptible to the toxic effects of cadmium are those who are deficient in: a. phosphorous b. zinc c. potassium d. iron

iron

Question 3 What is the most important aspect in controlling roaches a. use of a strong pesticide b. maintaining food general sanitation c. collection of garbage on a regular basis d. hiring a competent exterminator

maintaining food general sanitation

Question 34 Marks: 1 Salty flavors in milk may be due to the use of milk from cows infected with Choose one answer. a. tuberculosis b. mastitis c. brucellosis d. hepatitis

mastitis

Question 21 Marks: 1 Inspections of nonpublic areas can be made by consent of the owner or occupant and Choose one answer. a. on the basis of a general administrative plan b. whenever premises are vacant c. whenever premises are unlocked d. without regard to requests or demands that inspectors leave the premises

on the basis of a general administrative plan

Question 29 The preferred method for controlling sewage from watercraft is the use of a. on-board holding tanks b. overboard discharges when there is a large body of water to dump into c. incinerator toilets d. compost toilets

on-board holding tanks

Question 33 Marks: 1 The preferred method for controlling sewage from watercraft is the use of Choose one answer. a. on-board holding tanks b. overboard discharge c. incinerator toilet d. compost toilet

on-board holding tanks

Question 27 When the chlorine is added to water a. one acid is formed b. two primary acids are formed c. I-IC1 is considered the primary product d. ozone is produced in large quantities

one acid is formed

Question 44 Which of the following is generally most useful as legal evidence: a. a chronological summary of related events b. original field notes c. a photocopy of office records and correspondence d. a published report c. a photocopy of office records and correspondence d. a published report

original field notes

Question 40 Marks: 1 Of the shellfish listed below, the ones most likely to cause illness are Choose one answer. a. oysters b. crabs c. shrimp d. lobsters

oysters

Question 14 Which one of the following is not one of the major atmospheric gases? a. oxygen b. ozone c. argon d. nitrogen

ozone

Question 37 Perhaps the most difficult of the pollutants to control is: a. Carbon dioxide b. Sulfur dioxide c. Nitrogen oxide d. ozone

ozone

Question 23 Marks: 1 One method of financing for a municipal capital improvement is by revenue bonds which in turn are paid by Choose one answer. a. all persons in a given developed community b. state revenues c. persons receiving the service d. federal revenues

persons receiving the service

Question 36 If the Green Lights program is successful: a. pollution from fossil fuel production will decrease b. consumption of oils will increase c. workers compensation claims will decrease d. government subsidies to business will decrease

pollution from fossil fuel production will decrease

Question 57 In children, perhaps the most damage result of chronic low-level exposure to lead can: a. result in unruly classroom behavior b. inhibit normal development of intellectual abilities c. decrease their ability to follow directions d. produce lowered IQ scores

produce lowered IQ scores

Question 34 Marks: 1 The microbe primarily responsible for skin infections in whirlpools Choose one answer. a. escherichia coli b. pseudomonas aeruginosa c. shigella sonnei d. salmonella typhimurium

pseudomonas aeruginosa

Question 14 Marks: 1 Which type of inspection would be conducted prior to legal action? Choose one answer. a. reinspection b. routine c. complete d. initial

reinspection

Question 34 Marks: 1 Laboratories working with infectious agents in a properly controlled setting have been shown to Choose one answer. a. represent no threat to the community b. represent a real and continuous threat to the community c. represent a growing danger to the environment d. none of the above

represent no threat to the community

Question 35 Marks: 1 Microbial pollution travels only a short distance through Choose one answer. a. solution channels in limestone b. fissured rock c. dried-out, cracked clay d. sandy loam or clay

sandy loam or clay

Question 36 A major population group that has increased concern associated with exposure to asbestos fibers has been expressed for: a. mine workers b. public service workers c. school children d. factory workers

school children

Question 62 Marks: 1 Oysters, soft-shell and hard-shell clams, mussels, lobsters, crabs, and shrimp fall under what group? Choose one answer. a. molluscan shellfish b. shellfish c. fomites d. crustacea

shellfish

Question 60 Marks: 1 Diatomaceous earth filters Choose one answer. a. should be integrated into pressure-tank systems b. can be used for public water supplies c. should be augmented by chlorination d. can be left unattended for long periods of time

should be augmented by chlorination

Question 31 A septic tank is used to: a. slow down the movement of raw sewage b. purify the sewage c. eliminate odors d. destroy all solid matter

slow down the movement of raw sewage

Question 51 Marks: 1 Which of the following compounds would not contribute to water hardness? Choose one answer. a. calcium sulfate b. magnesium sulfate c. calcium chloride d. sodium chloride

sodium chloride

Question 13 Which would not be used as coagulant? a. black alum b. chlorinated copperas c. ferric chloride d. sodium hypochlorite

sodium hypochlorite

Question 41 Marks: 1 The typical limitation of use of the septic tank absorption field system is due to Choose one answer. a. cost b. land use considerations c. soil type and size requirements d. appearance

soil type and size requirements

Question 30 The Federal Resource Conservation and Recovery Act of 1976 (RCRA) is mainly concerned with: a. water b. energy c. solid wastes d. air

solid wastes

Question 65 Marks: 1 A charging hopper, gas cooling, and particulate removal are essential in the disposal of what types of wastes? Choose one answer. a. garbage disposal b. paper products c. solid wastes d. radioactive wastes

solid wastes

Question 92 Sand filters, elevated systems in suitable fill, evapotranspiration absorption systems, evapotranspiration beds, aeration systems, stabilization ponds or lagoons, recirculating toilets and the like, are a. less effective than subsurface soil absorption systems b. used prior to soil absorption when soil is poor c. sometimes used where soil is unsuitable d. required for treatment in areas of high risk

sometimes used where soil is unsuitable

Question 14 Marks: 1 Air pollution control should first be considered at the Choose one answer. a. source b. stack c. industrial level d. suburban level

source

Question 35 Marks: 1 In research and problem identification, the evaluation of the community contains all the following except Choose one answer. a. transportation systems b. population and demographic studies c. special planning studies d. economic studies and proposals

special planning studies

Question 20 The scientific name of a certain microorganism is Clostridium perfringens. The second word of this name indicates the: a. class b. genus c. phylum d. species

species

Question 1 Which of the following would not be as likely to be contracted bathing at a beach? a. leptospirosis b. middle ear infection c. spinal meningitis d. all of the above

spinal meningitis

Question 56 Marks: 1 The amount of debt a municipality may incur is usually determined by Choose one answer. a. the mayor b. the contractor c. the local Board of County Commissioners d. the constitution or laws of a state

the constitution or laws of a state

Question 31 Marks: 1 Which of the following is not a primary consideration when locating a groundwater supply? Choose one answer. a. the probable travel of pollution through the ground b. the well construction practices and standards c. the sanitary seal provided at the point where the pump lines pass out of the casing d. the distance that the water will need to travel

the distance that the water will need to travel

Question 4 Marks: 1 Which of the following statements is (are) true concerning the presence of coliform organisms in drinking water? Choose one answer. a. the drinking water may also be used as a varnish remover b. the drinking water should be considered unsanitary c. the drinking water does not contain toxic chemicals d. all of the above

the drinking water should be considered unsanitary

Question 21 Marks: 1 The term "Federal agency" does not include which of the following Choose one answer. a. the executive office b. general local government c. all agencies of the federal government d. indian tribes assuming NEPA responsibilities

the executive office

Question 25 Compactibility of soil in landfills depends primarily on: a. the point at which refuse is discharged on the fill b. the type of refuse to be compacted c. the moisture content of the soil d. the gradient of the particle size of the soil

the gradient of the particle size of the soil

Question 63 Marks: 1 The limitation of the lift capability of the centrifugal pump is based on Choose one answer. a. the weight of the atmosphere b. the design of the impeller and volute c. the efficiency of the motor d. the effect of friction

the weight of the atmosphere

Question 34 Marks: 1 Rocky Mountain spotted fever is spread by Choose one answer. a. flies b. spiders c. cockroaches d. ticks

ticks

Question 5 Marks: 1 In the rectangular furnace, the grates are arranged in Choose one answer. a. arches b. rectangles c. tiers d. circles

tiers

Question 21 A constant buzzing or ringing in the ears is called: a. sensorineutral impact b. tinnitus c. threshold abridgment d. otitis media

tinnitus

Question 43 Marks: 1 A sanitary survey of a water system is necessary for what reason? Choose one answer. a. to determine the safety and the adequacy of the water supply b. to determine how much iron is in a water supply c. to determine what size pump is needed for the water system d. to determine whether the water in the system is hard or soft

to determine the safety and the adequacy of the water supply

Question 35 Marks: 1 Incinerators are rated in terms of Choose one answer. a. percent fuel capacity per day b. BTUs per day c. tons of burnable waste per day d. cubic feet of solid waste per day

tons of burnable waste per day

Question 39 What is the inherent capacity of a pesticide to produce injury or death? a. antagonistic effect b. synergistic effect c. toxicity d. hazard effect

toxicity

Question 31 Toxicity is determined by a laboratory procedure called the a. EPA method 012 b. toxicity characteristic leaching procedure c. method sixteen d. landfill toxicity screening

toxicity characteristic leaching procedure

Question 9 Marks: 1 A vehicle built on a chassis and having a body of not more than 8-feet wide and 32-feet long designed for travel, recreation, and vacation use is Choose one answer. a. travel trailer b. all-terrain vehicle c. mobile home d. none of the above

travel trailer

Question 9 Marks: 1 The most practical way to control hay fever is to Choose one answer. a. treat the environment b. treat the patient c. relocate the patient d. all of the above

treat the patient

Question 61 Marks: 1 The amount of color in water should be less than Choose one answer. a. 5 color units b. 10 color units c. 20 color units d. 15 color units

15 color units

Question 3 PCBs were first synthesized in: a. 1920s b. 1930s c. 1940s d. 1950s

1920s

Question 80 Marks: 1 If a sample of water contains 5,000 fecal coliform colonies per 100 ml of water, it is placed in which environmental impact category? Choose one answer. a. 2 b. 3 c. 4 d. 5

2

Question 6 Which one of the following is least penetrating? a. Alpha rays b. Beta rays c. Gamma rays d. x-rays

Alpha rays

Question 53 The "Ozone Hole" was first noticed in a. Antarctica b. The Arctic c. Canada d. Chile

Antarctica

Question 71 Fungal spores, bacterial and animal dander are examples of a. Particulate matter b. Biological pollutants c. Allergens d. pathogens

Biological pollutants

Question 68 Aeration is a natural process or mechanical process which: a. Increases the contact between air and water b. Improves the physical and chemical characteristics of water c. Both a and b d. Neither a and b

Both a and b

Question 73 Which of the following products is not a traditional formaldehyde air pollution source? a. Cosmetics b. Burning vegetation c. Particle board d. Computer emissions

Burning vegetation

Question 12 Which gas is found in sewers but is not considered explosive? a. methane b. CO2 (carbon dioxide) c. hydrogen d. CO (carbon monoxide)

CO2 (carbon dioxide)

Question 82 Nephelometric Turbidity Units (NTU) are most commonly used to a. Determine the type of pollution or contamination present in natural waters b. Estimate the amount of dissolved oxygen in surface waters c. Define the strength of waste waters d. Determine turbidity

Determine turbidity

Question 41 In order to implement and enforce federal Clean Air Act requirements, states must: a. Develop motor vehicle testing programs b. Establish state environmental protection agencies c. Develop state implementation plans d. Secure federal permits for stationary sources of pollution

Develop state implementation plans

Question 21 Marks: 1 Toxins that attack nerves are referred to as enterotoxin. Choose one answer. a. True b. False

False

Question 38 Marks: 1 Continuous exposure to high-level noise is less harmful than intermittent or occasional exposure. Choose one answer. a. True b. False

False

Question 38 Marks: 1 The disease caused by Legionella pneumophila was found to originate in the toilet tanks in older hotels. Choose one answer. a. True b. False

False

Question 4 Marks: 1 Funding for the collection, storage, and disposal of household hazardous waste always comes directly from the individuals who generate the waste. Choose one answer. a. True b. False

False

Question 4 Marks: 1 Onchocerciasis is a rare illness found in some third world countries. Choose one answer. a. True b. False

False

Question 46 Marks: 1 Because the pesticides lindane and malathion do not stain they are excellent liquid insecticide sprays to use for controlling bedbugs in mattresses or other bedding. Choose one answer. a. True b. False

False

Question 5 Marks: 1 Neutrons are charged, high-energy particles. Choose one answer. a. True b. False

False

Question 1 The manner in which water moves from place to place, changing from one form to another is called the: a. Evaporation cycle b. Hydrologic cycle c. Precipitation cycle d. Evapotranspiration cycle

Hydrologic cycle

Question93 The difference between a disaster and terrorism is best described as a. Intent b. Criminal activity c. Nature disaster d. Number impacted

Intent

Question 60 Many diseases and infestation have common names that can confuse the professional when referred to by lay individuals and often children. The term cooties refers to a/an: a. Flea infestation b. Infestation of bedbugs c. Lice infestation d. Infestation of flies

Lice infestation

Question 12 The primary reason for the decline in the water table in some groundwater dependent areas of the world is: a. Over-pumping b. Lack of permeable aquifers c. High rate of evaporation d. Low rates of precipitation

Over-pumping

Question 38 Heating of air, gas or gas mixture up to 9032F (5000C) for the thermal destruction of hazardous wastes describes a process called a. Plasma pyrolysis technology b. rotary kiln incineration c. fuel blending d. none of the above

Plasma pyrolysis technology

Question 43 After the servicing (pumping) of a septic tank, it is essential that the tank and lid be a. Cleaned with a bleach or chlorine product b. Scrubbed to remove hardened sludge c. Recolonized with a commercial biological product containing yeast d. Replaced and secured for safety purposes

Replaced and secured for safety purposes

Question 79 What is the horizontal part of the stairs you step on called? a. Riser b. tread c. Step d. Footer

Riser

Question 74 The term "rem" is short for a. Roentgen energy measure b. Roentgen equivalent measure c. Radiationenergy measure d. Roentgen Equivalent Man

Roentgen Equivalent Man

Question 68 The __ inspections are annual or scheduled inspections to determine compliancewith laws, codes, rules and regulations. a. Initial b. Complete c. Routine d. reinspection

Routine

Question 86 Which bacteria in large numbers can survive extended storage in Cheddar cheese? a. Salmonella ssp b. Brucella ssp c. Shigella ssp d. Clostridium perfringens

Salmonella ssp

Question 28 Which one of the following cities has a water concentration of asbestos that is 10-100 million fibers per liter? a. Chicago b. Pittsburgh c. Los Angeles d. San Francisco

San Francisco

Question 52 What is the term given to organization wherein lines of authority and responsibility run upward and downward through several levels with a broad functional base at the bottom and a single executive head at the top? a. Chain of command b. Scalar process c. Under defined organization d. Appellate system

Scalar process

Question 57 Shock loading refers to: a. A huge influx of fish to a breeding ground b. Large scale reproductive failure of fish in an area c. Several months' accumulation of acid quickly melting into a spawning area d. The overabundance of frog tadpoles emerging in an area

Several months' accumulation of acid quickly melting into a spawning area

Question 45 Which one of the following is a characteristic of high level nuclear wastes? a. They don't require shielding b. They are not hot c. They generally arise from spent reactor fuel d. They can be handled with direct human contact

They generally arise from spent reactor fuel

Question 69 The main source of childhood exposure to particulate pollution is: a. Radon b. Tobacco smoke c. Burning coal d. Natural gas

Tobacco smoke

Question 63 The release of genetically engineered materials to the environment is regulated by a. USDA and EPA b. NIH and CDC c. EPA and AEC d. FDA and PHS

USDA and EPA

Question 36 Which is not another name for the Norway Rat (rattus norvegicus)? a. sewer b. black c. brown d. wharf

black

Question 22 Which one of the following general human health problems has been definitively associated with general exposure to dioxin? a. liver cancer b. chloracne c. increased incidence of soft tissue sarcoma d. multiple myelomas

chloracne

Question 18 Hearing loss that results from infectious or trauma is called: a. sensorineural loss b. temporary threshold shift c. conductive loss d. noise induced hearing loss

conductive loss

Question 66 The cause of "Mad Hatters' Disease" was traced to: a. lead b. arsenic c. mercury d. cadmium

mercury

Question 33 An example of __ is closing down an establishment without first giving a required statutory notice. a. malfeasance b. nonfeasance c. misfeasance d. none of the above

misfeasance

Question 77 Marks: 1 If the air in a community contains 0.10 to 0.17 parts per million of sulfur oxide, it is considered to be ______ quality air. Choose one answer. a. high b. moderate c. poor d. extremely poor

moderate

Question 16 Which is not an essential factor in the combustion phase of an incinerator? a. moisture b. time c. temperature d. turbulence

moisture

Question 15 OSHA regulations other the HAZWOPER apply to emergency response and hazardous waste operations if they are a. less stringent b. more stringent c. endorsed by FDA d. known by the site supervisor

more stringent

Question 74 Minamata Disease is associated with: a. lead b. cadmium c. organic mercury d. pesticides

organic mercury

Question 10 The chemical quality of a pool is generally measured by which 2 tests? a. pH and alkalinity b. alkalinity and TDS c. pH and chlorine residual d. alkalinity and chlorine residual

pH and chlorine residual

Question 2 How is giardiasis USUALLY transmitted to others? a. person-to-person transfer of cysts from the feces of the infected individual b. drinking unfiltered water from streams and lakes c. drinking unboiled water from streams and lakes d. drinking inadequately chlorinated water from a municipal water distribution system

person-to-person transfer of cysts from the feces of the infected individual

Question 12 Marks: 1 The unit of measurement most commonly used to measure loudness is called Choose one answer. a. hertz b. phon c. decibel d. none of the above

phon

Question 14 Marks: 1 The term "rad" means Choose one answer. a. required administered dose b. radiation admitted dose c. roentgen absorbed dose d. radiation absorbed dose

radiation absorbed dose

Question 95 Man-made organic compounds that degrade very slowly are referred to as a. total organic compounds b. fractory compounds c. refractory organics d. anaerobic organic compounds

refractory organics

Marks: 1 In recent years, the largest number of rabies cases were associated with Choose one answer. a. skunks b. bats c. dogs d. cats

skunks

Question 13 Hearing loss that lasts a few hours following exposure to excessive noise is referred to as: a. sensorineural loss b. temporary threshold shift c. conductive loss d. noise induced hearing loss

temporary threshold shift

Question 43 Marks: 1 The National Safety council reported that solid waste collection workers have an injury frequency approximately ______ times the national average for all industry. Choose one answer. a. ten b. two c. three d. five

ten

Question 22 In the environmental planning of a rural subdivision, what basic information would you utilize in determining if both individual water and sewage systems could be placed on each home site? a. the state sanitary code b. the size of the septic tank c. the depth of the water wells d. the size of the lot

the size of the lot

Question 6 Marks: 1 If the septic tank will have a garbage disposal unit feeding into it Choose one answer. a. the size of the tank should be increased 50 percent b. the tank should have an agitator c. the tank should not be equipped with a gas baffle d. the tank should not be constructed with precast concrete

the size of the tank should be increased 50 percent

Question 7 A given individual will most easily tolerate noise when: a. the source of the noise is considered inevitable b. the individual is the source of the noise c. the source of the noise is from construction d. the individual feels nothing can be done about it

the source of the noise is from construction

Question 5 Which is correct regarding septic tanks? a. they will eliminate odors b. they will purify sewage c. they will slow down the flow rate so that solids can be settled out d. all of the above

they will slow down the flow rate so that solids can be settled out

Question 60 Marks: 1 Modern furnace walls are usually lined with Choose one answer. a. tile or have water walls b. plastic and molten slag c. brick with fire-rods d. steel

tile or have water walls

Question 44 Chaga's disease is also known as a. brucellosis b. trypanosomiasis c. undulant fever d. dengue fever

trypanosomiasis

Question 36 Following floods or other natural disasters, there is frequently public concern for __ vaccination a. cholera b. amoebic dysentery c. typhus d. typhoid

typhoid

Question 27 Marks: 1 An example of an anticoagulant rodenticide is Choose one answer. a. red squill b. cyanide gas c. warfarin d. malathion

warfarin

Question 37 Marks: 1 The appropriate procedure used for bottle washing in large plants is Choose one answer. a. wash, rinse, air-dry b. pre-soaking, wash, rinse, sanitizing rinse, towel dry c. steam-cleaning at a pressure of 170 degrees F d. wash, rinse, sanitizing rinse, air dry

wash, rinse, sanitizing rinse, air dry

Question 37 The number one item listed under emergency equipment and supplies is __ a. food b. first aid c. water d. folding portable toilet

water

Question 15 Marks: 1 Which of the following is not a recommendation for topography and site survey? Choose one answer. a. careful investigation of the property b. former plot plans c. assistance by a cooperative neighbor d. water supply source that is fast moving

water supply source that is fast moving

Question 23 The most satisfactory basis for measuring quantities of solid waste is by: a. volume b. volume and weight c. volume per cubic yard d. weight

weight

Question 41 It can be assumed that all hazardous waste landfill liners a. are designed for all hazardous materials b. will eventually leak c. will never leak d. both a and c

will eventually leak

Question 18 The direction of operation in involving a sanitary landfill should be: a. with the prevailing wind b. perpendicular to the wind c. against the wind d. does not matter

with the prevailing wind

Question 8 Marks: 1 The direction of operation of a sanitary landfill should be Choose one answer. a. against the prevailing wind b. with the prevailing wind c. perpendicular to the prevailing wind d. changed daily to be perpendicular to the prevailing wind

with the prevailing wind

Question 2 Marks: 1 The poison of poison ivy, oak, and sumac is an oleoresin that is found in all parts of the plant except the Choose one answer. a. leaves b. flowers c. wood d. bark

wood

Question 65 Perhaps the most important feature in implementing programs in biosafety is a. the extensive use of rules and regulations b. the reliance on outside contractors c. working with the client in a consultative mode d. none of the above

working with the client in a consultative mode

Question 2 Most concerns about noise as pollutant have focused on the: a. home b. school c. community d. worksite

worksite

Question 3 Which one of the following is not a part of particulate radiation? a. Proton b. Neutron c. Electron d. x-ray

x-ray

Question 73 The roentgen is a measure of the ionization in air produced by exposure to a. x-rays or gamma rays b. alpha particles c. beta particles d. all of the above

x-rays or gamma rays

Question 49 Which of the following diseases is not related to rodents in its transmission to man: a. salmonellosis b. leptospirosis c. yellow fever d. rickettsial pox

yellow fever

Question 29 Marks: 1 The goal for management of hazardous waste should be Choose one answer. a. safe disposal methods b. minimal impact on the environment c. zero discharge d. all of the above

zero discharge

Question 73 Marks: 1 E. coli 0157:H7 is often spread by Choose one answer. a. direct contact b. under-cooked food c. a and b d. none of the above

. a and b

Question 37 Marks: 1 Drinking water standards generally specify that a water is safe provided that testing in a specified manner does not reveal more than an average of Choose one answer. a. 10 positive samples out of 100 samples taken b. 50 coliform organisms per 100 ml c. 1 positive sample out of 40 samples taken d. 50 coliform organisms per 200 ml

1 positive sample out of 40 samples taken

Question 31 Marks: 1 The rate of filtration should be ______ for a diatomite filter. Choose one answer. a. 15 to 20 gpm/ft2 b. 3 to 5 gpm/ft2 c. 1 to 2 gpm/ft2 d. 3 gpm/ft2

1 to 2 gpm/ft2

Question 38 Marks: 1 Water in wading pools should be completely recirculated every Choose one answer. a. 1 to 2 hours b. 12 hours c. 6 hours d. 24 hours

1 to 2 hours

Question 55 Soil moisture of about __ % of saturation is the best for survival of pathogens a. 10-20 b. 30-40 c. 5-10 d. 50-60

10-20

Question 30 Even if reduction of the emission of CFCs and other greenhouse gases were accomplished, the effect of what is already in the atmosphere will be exerted for approximately: a. 50 years b. 100 years c. 150 years d. 200 years

100 years

Question 26 Marks: 1 Sludge accumulation in a tank serving a normal home has been estimated at Choose one answer. a. 40 to 49 gals. per person per year b. 69 to 80 gals. per person per year c. 18 to 21 gals. per person per year d. 2.2 gals. per person per year

18 to 21 gals. per person per year

Question 92 When disinfecting rubber valves and other parts of milking equipment with hot water, the water temperature should be ______ or a strong chlorine solution of ______ strength can be used instead. a. 180 to 190F, 200 mg/l b. 180 to 190F, 190 mg/l c. 190 to 200F, 200 mg/l d. 190 to 200F, 190 mg/l

180 to 190F, 200 mg/l

Question 65 An employer moves employers who have reached the upper permissible level of exposure to a hazardous environment, to prevent further exposure. What type of hazard control is this? a. Professional control b. Personal control c. Administrative control d. Engineering control

Administrative control

Question 53 The sensitivity of an ecosystem to acid precipitation is largely determined by the areas's: a. Forestation level b. Buffering capacity c. Number of lakes d. topography

Buffering capacity

Question 26 What is the source of scombroid poisoning? a. Histamines in the muscle of fish b. Sprouted green potatoes c. Undercooked pork d. Rice contaminated with rodent feces

Histamines in the muscle of fish

Question 63 What is the danger and/or hazard posed by an etiological agent? a. Corrosive reaction b. Asphyxiation c. Human disease d. Allergic reaction

Human disease

Question 89 Groundwater in the soil travels up through a plant's root system and then comes out from the leaf structure as a. Transpiration b. Sublimation c. Evaporation d. Condensation

Transpiration

Question 3 The region of the atmosphere where virtually all life activities occur in the: a. Troposphere b. Stratosphere c. Mesosphere d. tropopause

Troposphere

Question 1 Marks: 1 The housefly consumes only liquids, and therefore, must transform all other substances to the liquid state before digestion. Choose one answer. a. True b. False

True

Question 10 Marks: 1 An analysis by Dever indicated that environmental factors were considered to be the cause of 49% of all deaths due to accidents, 20% of the influenza and pneumonia deaths, 41% of the homicides, and 15% of the deaths due to birth injuries and other diseases peculiar to early infancy. Choose one answer. a. True b. False

True

Question 100 The depth of septic tanks and ratio of width to length recommended by most health departments are very similar. a. True b. False

True

Question 105 The Maximum Contaminant Level (MCL) is the highest concentration of a contaminant that is allowable in a water system. a. True b. False

True

Question 65 Marks: 1 Sludge and scum accumulation, and the appearance of particles of solids in the effluent from a septic tank is an indication of what? Choose one answer. a. a failure in the absorption field b. a septic tank in need of cleaning c. a water line leak d. the need to replace the septic tank

a septic tank in need of cleaning

Question 91 Deep sludge depth, thick fog layer and the appearance of particles of solids in the effluent from a septic tank is an indication of what? a. a failure in the absorption field b. a septic tank in need of cleaning c. a water line leak d. the need to replace the septic tank

a septic tank in need of cleaning

Question 62 Marks: 1 A soil which is mottled brown and red would indicate Choose one answer. a. saturation for extended periods b. adequate air and water passage c. a soil suitable for subsurface groundwater absorption d. a tight soil probably due to a fluctuating water table or lack of aeration

a tight soil probably due to a fluctuating water table or lack of aeration

Question 19 Marks: 1 To mix acid and water, always Choose one answer. a. add water to acid b. add acid to water c. add soda ash to acid d. stir while pouring water into the acid

add acid to water

Question 26 To mix acid and water, always a. add water to acid b. add acid to water c. add soda ash to acid d. stir while pouring water into the acid

add acid to water

Question 1 Marks: 1 The best control of swimmer's itch at a bathing beach is to Choose one answer. a. add copper sulfate b. increase the chlorine residual c. lower the chlorine residual

add copper sulfate

Question 2 Marks: 1 Which of the following factors is not considered in of need of control by the WHO health goal? Choose one answer. a. physical well being b. achievement of individual wealth c. mental well being d. social well being

achievement of individual wealth

Question 18 Marks: 1 The high moisture content of combustion vent gases create Choose one answer. a. acids which eat away at the mortar in the chimney b. C2H20 c. radon d. all of the above

acids which eat away at the mortar in the chimney

Question 1 An action authorized by law to restrict or prevent the movement of goods for the protection of public health, safety and welfare is called Choose one answer. a. an injunction b. an embargo c. an order to cease and desist d. a subpoena

an embargo

Question 14 Marks: 1 The drain line of an ice machine should connect to the sewer system through Choose one answer. a. a grease trap b. a direct connection below floor level c. an open receptacle with an air gap d. a backflow preventer properly vented

an open receptacle with an air gap

Question 60 Marks: 1 Which of the following are least important in reducing sewage to "soil," liquids, and gases? Choose one answer. a. anaerobic bacteria b. earthworms c. protozoa d. aerobic bacteria

anaerobic bacteria

Question 28 Refuse in an established sanitary landfill decomposes by the bacterial process of: a. aerobic decomposition b. psychrophilic decomposition c. thermophilic decomposition d. anaerobic decomposition

anaerobic decomposition

Question 7 How often should residential septic tanks be inspected? a. monthly b. annually c. bimonthly d. every 3-5 years

annually

Question 39 Marks: 1 When first considering the control of houseflies, roaches, and rats, the primary emphasis should be on Choose one answer. a. pesticides that are not harmful to children and pets b. basic community environmental sanitation to eliminate the conditions that make possible their survival and reproduction c. types of diseases that could possibly be transmitted and the signs and symptoms of each d. their resistance to various pesticide groupings

basic community environmental sanitation to eliminate the conditions that make possible their survival and reproduction

Question 47 Marks: 1 A landfill site should not Choose one answer. a. be located near a major highway b. be given an attractive entrance and approach road c. house equipment on site d. be inaccessible during bad weather conditions

be inaccessible during bad weather conditions

Question 7 The process of a toxic substance being increasingly stored in body tissue is called: a. biomass b. bioaccumulation c. biomagnification d. biodiversification

bioaccumulation

Question 32 Which component of solid waste storage, collection and disposal must be subsidized from the other? a. no part requires subsidy from the other b. disposal from collection fees c. collection from disposal fees d. recycling takes care of any needed subsidy

disposal from collection fees

Question 27 Marks: 1 Which of the following factors contributes to water hardness? Choose one answer. a. high concentrations of iron b. pond, creek, or other surface water c. well-water supplies that are improperly constructed, protected, or located d. dissolved bicarbonates, sulfates, and/or chlorides of magnesium and calcium in groundwater

dissolved bicarbonates, sulfates, and/or chlorides of magnesium and calcium in groundwater

Question 76 When trying to establish economical hauling, what is most important? a. hauling time b. hauling distance c. means of hauling d. what is being hauled

hauling time

Question 17 When selecting a location for a sanitary landfill, which is correct? a. hauling time is more important than hauling distance b. hauling distance is more important than hauling time c. disposal site should be located in a remote area d. land area should provide usage for 5 to 10 years

hauling time is more important than hauling distance

Question 22 Marks: 1 The connection between the pool drain and the sanitary sewer must Choose one answer. a. be solid copper no less than three inch in diameter b. be solid cast iron or NSF approved PVC c. have a properly located cleanout d. be provided with an air gap no less that 2 pipe diameters of the discharge pipe

have a properly located cleanout

Question 42 The number one environmental health problem that affects America's children is: a. exposure to asbestos b. lead poisoning c. exposure to environmental tobacco smoke d. possible exposure to nuclear wastes

lead poisoning

Question 29 Marks: 1 Common causes of failure of septic tank seepage field systems include improper sizing, nonsuitable soil, nonservicing, and Choose one answer. a. insufficient nutrients in tank b. excessive use of laundry detergents c. leaking fixtures d. use of wetting agents

leaking fixtures

Question 47 Swimming pools have been implicated in many outbreaks of disease, including a. rabies b. AIDS c. taeniasis d. leptospirosis

leptospirosis

Question 5 Flies generally spread disease by a. cyclo-development transmission b. propagative transmission c. fecal contamination d. mechanical transmission

mechanical transmission

Question 35 Marks: 1 Bat-proofing should be done in the ______, when bats are hibernating in caves. Choose one answer. a. late autumn through winter b. midautumn through spring c. early spring only d. midsummer through early autumn

midautumn through spring

Question 14 Performance of an authorized act in a unauthorized manner is called: a. nonfeasance b. misfeasance c. malfeasance d. disfeasance

misfeasance

Question 68 Which of the following composting method will require limited land space? a. beccari method b. bangalore process c. fairfield-hardy process d. none of the above

none of the above

Question 8 Marks: 1 Hazardous wastes include Choose one answer. a. industrial discharges permitted under the FWPCA b. agricultural wastes c. permitted irrigational waters d. none of the above

none of the above

Question 32 ___ is the failure to perform an official duty without sufficient excuse. a. nonfeasance b. misfeasance c. malfeasance d. a or b above

nonfeasance

Question 29 Which one of the following is least likely to be a viable response to stop global warming: a. improve the efficiency of internal combustion engines b. rapidly expand nuclear power generation c. replant deforested areas of the world d. taxing the use of fossil fuels

rapidly expand nuclear power generation

Question 10 Which of the following is not a factor in the satisfactory operation of a septic tank/sand filter system? a. rate of sewage application b. effective size of sand c. ratio of septic tank size to sand filter size d. uniformity coefficient of sand

ratio of septic tank size to sand filter size

Question 8 The Greenhouse Effect is the result of a. The bombardment of the earth by ultraviolet rays b. the absorption of UVA by the ozone layer c. the diffusion of UVB by the tropopause d. re-radiation of infrared waves back to the earth's surface

re-radiation of infrared waves back to the earth's surface

Question 34 A rodenticide which is also an emetic is: a. strychnine b. red squill c. warafin d. arsenic

red squill

Question 35 If permitted under existing laws, which of the following would be an effective technique for ceasing operation of an establishment? a. a mandatory injunction b. revoking a license c. an injunction d. lawmakers

revoking a license

Question 25 Which one of the following will perhaps the most dramatic consequence of global warming? a. loss of biodiversity b. human illness c. rising sea level d. diminishing crop yields

rising sea level

Question 41 A measure of the probability and severity of adverse effects under specific conditions best describes a. risk b. hazard c. exposure d. toxicity

risk

Question 24 Marks: 1 Rattus Rattus is also referred to as the Choose one answer. a. house rat b. norway rat c. roof rat d. all of the above

roof rat

Question 38 Which would be a plant-derived organic pesticide? a. arsenic b. chlorine c. rotenone d. boron

rotenone

Question 14 Marks: 1 The process of comprehensive community planning includes all of the following except Choose one answer. a. a statement of goals and objectives b. public information and community action c. surrounding area politics d. basic studies, mapping, and data analysis

surrounding area politics

Question 55 Marks: 1 Vegetative forms of Clostridium botulinum spores are killed in Choose one answer. a. 10 to 15 minutes at 176 degrees F b. 10 to 15 minutes at 80 degrees F c. 1 minute at 250 degrees F d. 10 to 15 minutes at 112 degrees F

10 to 15 minutes at 176 degrees F

Question 49 In children, blood lead levels (BLLs) more than __ are associated with decreased intellectual performance and other adverse health events. a. 2 ppm b. 5 AO c. 10 ug/dL d. 15 ppm

10 ug/dL

Question 49 Marks: 1 The Consumer Product Safety Commission requires that refuse bins or containers must be able to withstand a hanging weight or force of ______ pounds and a horizontal force of ______ pounds without overturning, with the force applied where tipping of the bin is not likely. Choose one answer. a. 191; 70 b. 223; 97 c. 200; 100 d. 50; 100

191; 70

Question 70 What is the primary cause of death resulting from automobiles exhaust accumulation in garages? a. Methane b. Ethylene dioxide c. Carbon monoxide d. Tetraethyl lead

Carbon monoxide

Question 11 Which one of the following has been implicated in many rush-hour traffic accidents? a. Carbon dioxide poisoning b. Nitrogen oxide poisoning c. Carbon monoxide poisoning d. Ozone poisoning

Carbon monoxide poisoning

Question 61 In legal terminology the power of condemnation is also known as: a. Eminent domain b. Noscitur as sociis c. Law of nuisances d. Judicial presumption

Eminent domain

Question 47 What should not be done with food samples collected during a foodborne illness investigation? a. Refrigerate b. Freeze c. Seal d. label

Freeze

Question 31 Backsiphonage may be prevented by all of the following methods except a. Hydrostatic loops b. Vacuum breakers c. Air gap separation d. Backpressure units

Hydrostatic loops

Question 31 Which amendment of the US Constitution protects a nonpublic area from unreasonable searches and seizures? a. III b. IV c. V d. VI

IV

Question 67 Which one of the following is least likely to be a radon emitter? a. Obsidian b. Granite c. Shale d. phosphate

Obsidian

Question 41 Which of the following inversions develops at night under conditions of relatively clear skies and very light winds? a. Subsidence inversion b. Frontal inversion c. Radiational inversion d. Stack emission inversion

Radiational inversion

Question 18 Perhaps the greatest problem that resulted from the testing of nuclear weapons prior to the Nuclear Test Ban Treaty was: a. Radioactive contamination of soil and water b. The number of infants born with birth defects c. Disabilities experienced by those exposed to radiation d. The fear that testing will resume

Radioactive contamination of soil and water

Question 49 The most common route of pesticide entry into the body is: a. inhalation b. ingestion c. absorption d. injection

ingestion

Question 62 Asbestosis is caused by fine silicate fibers retained in the a. kidneys b. lungs c. colon d. abdomen

lungs

Question 34 __ is the doing of an authorized act in an unauthorized manner. a. nonfeasance b. misfeasance c. malfeasance d. feasance

misfeasance

Question 8 Marks: 1 A disease transmitted by birds and bird droppings is Choose one answer. a. dengue fever b. psittacosis c. tularemia d. hurine typhus

psittacosis

Question 6 A chemical used to adjust pool alkalinity is: a. chlorine b. calcium chloride c. sodium bicarbonate (soda ash) d. copper sulfate

sodium bicarbonate (soda ash)

Question 73 All of the following have been associated with methyl mercury poisoning except: a. bread b. pork c. fungicides d. tuna

tuna

Question 78 Septic tanks serving commercial operations should be inspected for the need for cleaning a. once per month b. once per year c. twice per year d. every 3 to 5 years

twice per year

Question 50 Insecticides/pesticides may be stored in all ways except: a. In a metal locked cabinet b. On the lowest shelf in the storage room c. Above the dishwashing sinks d. In the basement separate from food and other chemicals

Above the dishwashing sinks

Question 56 In order to achieve a conviction for failure to obey a violation order, which conditions must be satisfied? a. It must be shown that statutory authority for issuance of the order exists b. The defendant had notice of the above c. The defendant failed to heed the notice d. All of the above

All of the above

Question 60 Which one of the following is most affected by acid rain? a. Yucca cacti in Arizona b. Conifer forests at high elevations c. Apple trees in Oregon d. Juniper trees in California

Conifer forests at high elevations

Question 8 Hemolytic Uremic Syndrome is caused by infection with a. dracunculus medinensis b. staphylococcus aureus c. Escherichia coli 0157:H7 d. salmonella typhimurium

Escherichia coli 0157:H7

Question 16 The easiest and least expensive way to conserve water within most households is: a. Limit the amount of water used in cooking b. Limit the amount of time in showers c. Reducing the amount of water used in taking tub baths d. Repairing leaky toilet fixtures

Repairing leaky toilet fixtures

Question 31 Standards for ionizing radiation exposure: a. Are set as absolute safety levels b. Represent a balance between adverse effects and known benefits c. Are designed to assist equipment manufacturers design safe machines d. Are based on definitive scientific research

Represent a balance between adverse effects and known benefits

Question 24 The most harmful effects of ionizing radiation on human fetal tissue is during: a. Immediately after fertilization occurs b. The second through sixth week of gestation c. The 12th through 20th week of gestation d. Just prior to delivery

The second through sixth week of gestation

Question 103 To prepare a solution of 100 mg per liter available chlorine, __ of 5.25 percent bleach with one gallon of water should be used. a. 0.5 oz b. 1.0 oz c. 0.33 oz d. 0.25 oz

0.25 oz

Question 84 The FDA action level for aflatoxins in milk shipped in interstate commerce is a. 0.5 ppb b. 0.7 ppb c. 0.1 ppb d. 1.0 ppb

0.5 ppb

Question 7 A quantity of liquid bleach (household) can be used to retreat 1000 gallons of water for drinking. a. 2 quarts b. 2 pints c. 1 pint d. 0.5 quarts

1 pint

Question 52 The strategy most often used to solve sulfur dioxide emissions in close proximity to the plant that produces the emission is: a. Installing scrubbers to clean the emissions b. Building recycling plants for the emissions c. Building tall stacks to direct the emission upward d. Reducing production levels that cause the emissions

Building tall stacks to direct the emission upward

Question 40 Under normal operating conditions, public exposure to ionizing radiation from nuclear power plants is primarily from: a. Release of water used to cool the plants b. Deliberate release of radioactive gas c. Removal of waste products from the plant d. Leakage from the natural process of radioactive decay

Deliberate release of radioactive gas

Question 44 The provisions of the CFR Part 1910 of Title 29 "Bloodborne Pathogens" are under the authority of? a. United Stated Public Health Service b. Department of Health and Human Services c. Justice Department d. Department of Labor

Department of Labor

Question 19 What is the primary organism identified in the fecal coli form test? a. Fecal streptococci b. Enterobacter aeroanes c. Salmonella typhosa d. Escherichia coil

Escherichia coil

Question 40 What does mottled brown and red soil indicate? a. Unsuitability for absorption are found at a depth of 10 feet b. Suitability for absorption due to granular structure c. Inadequate aeration methods d. Adequate agglomeration

Inadequate aeration methods

Question 73 Most cases of sick building syndrome can be traced to: a. High concentrations of carbon monoxide b. Poor construction c. High thicknesses of insulation d. Inadequate ventilation

Inadequate ventilation

Question 55 A major effect of stratospheric ozone layer depletion is a. Increase in incidence of non-melanoma skin cancer b. Higher mean temperature on the Northern Hemisphere c. Increase in phytoplankton population d. Increase rate of photosynthesis in plants

Increase in incidence of non-melanoma skin cancer

Question 5 To improve the health and living standards among Third World populations, one of the best things that could be done is: a. Increase their food supply b. Decrease the land pollution c. Increase the quantity of readily available safe water d. Decrease the rate of population growth

Increase the quantity of readily available safe water

Question 63 At the top of the US Environmental Protection Agencies list of the 18 top cancer risks is: a. Indoor air pollution b. Sulfur dioxide c. Carbon monoxide d. Nitrogen dioxide

Indoor air pollution

Question 65 A comprehensive inspection of an establishment when it is first brought under departmental control is a(n) __ or __ inspection. a. 3- 5-year b. Floor plan, flood diagram c. Necessary, required d. Initial, complete

Initial, complete

Question 58 A physical cross-connection: a. Is a connection between two approved water supplies b. Is a plumbing device c. Is a connection which may permit the flow of water into an approved potable water supply from an unapproved (non-potable) water supply

Is a connection which may permit the flow of water into an approved potable water supply from an unapproved (non-potable) water supply

Question 60 Which of the following is not characteristic of a license or permit: a. Operates through the administrative lifting of a legislative prohibition b. May be subject to certain specified conditions c. Allows the regulator to control the licensees activities by consent d. Is a semi-voluntary device to carry on his or her occupation with government approval

Is a semi-voluntary device to carry on his or her occupation with government approval

Question 54 Perhaps the major problem associated with selecting a sunscreen based on SPF alone is: a. Lack of generally accepted standards for determining SPF b. Lack of information available to the public c. Getting manufacturers to consistently advertise the products d. Getting manufacturers to continually raise the SPF value

Lack of generally accepted standards for determining SPF

Question 5 Resident of which of the following citied would probably receive the most cosmic radiation? a. Lake Placid b. Miami c. Los Angeles d. New York

Lake Placid

Question 16 The pollutant that would most likely cause the most damage to the nervous system would be: a. Sulfur dioxide b. Nitrogen dioxide c. Lead d. Particulate matter

Lead

Question 34 What contaminant has been associated with learning and cognitive disorders in children who drink contaminated water? a. Manganese b. Copper c. Lead d. parathion

Lead

Question 74 Long term effects of lead poisoning include: a. Learning disabilities b. Severe acne c. Loss of large motor skills d. Adult diabetes

Learning disabilities

Question 53 Marks: 1 ______ was responsible for preparing a circular to help determine "the probable impact of the proposed action on the environment." Choose one answer. a. Sadesky b. Miller c. Leopold d. Randall

Leopold

Question 59 UVA has been associated with all of the following except: a. Excessive skin wrinkling b. Cataracts c. Enhancement of the effects of the sun d. Lessened sunburning

Lessened sunburning

Question 38 All of the following are true about ozone as a disinfectant except which one? a. Nontoxic to aquatic organisms b. Source of dissolved oxygen c. Excellent viricide d. Long-lasting residual

Long-lasting residual

Question 45 Which area of the United States is projected to be most heavily affected by stricter air quality regulations: a. Pittsburg b. New York c. Los Angeles d. Houston

Los Angeles

Question 35 The major problem associated with uranium mining is the possible development of: a. Leukemia b. Skin cancer c. Lung cancer d. Malignant melanoma

Lung cancer

Question 60 Exposure to even moderate amounts of ultraviolet radiation can be dangerous for individuals suffering from: a. Heart disease b. Lupus erythematosus c. Bladder cancer d. Seizure disorders

Lupus erythematosus

Question 42 The information needed to use an air quality model includes a. Pollutant concentration data, population and meteorological data b. Population, source emission data and pollutant concentration data c. Meteorological data, pollutant concentration data and source emission data d. Stack size, population and pollutant concentration data

Meteorological data, pollutant concentration data and source emission data

Question 20 Which one of the following is the greatest genetic concern in terms of exposure to ionizing radiation? a. Mutations that accumulate in the gonads b. Blood-borne infections c. Increased frequency of dominant gene mutations d. Chromosomal damage in adolescents

Mutations that accumulate in the gonads

Question 14 The chemical used as a measure of the oxidant level of the atmosphere at any given time is: a. Nitrogen dioxide b. Carbon dioxide c. Ozone d. Sulfur dioxide

Ozone

Question 26 What statement concerning ozone is incorrect? a. Ozone residual can last several hours b. Ozone is faster disinfectant than chlorine c. Ozone is more expensive than chlorine d. All statements are correct

Ozone residual can last several hours

Question 31 What type of air pollution causes loss of chlorophyll in plants? a. PAN b. Sulfur dioxide c. Industries processing hazardous wastes d. High motor vehicle traffic

PAN

Question 23 Pollutants in the ambient air most associated with heightened risk of death and disease are: a. Particulate b. Sulfur dioxides c. Nitrogen oxides d. ozone

Particulate

Question 4 Acid condensates, dust, soot and smoke are considered: a. Sulfur dioxides b. Nitrogen oxides c. Naxes d. Particulate matter

Particulate matter

Question 39 The Ringlemann chart method of evaluating particle pollution in the atmosphere is being replaced by a determination of the a. Percent density b. Percent mist c. Percent dusts d. Percent opacity

Percent opacity

Question 20 Mosquitoes are responsible for all except a. Q fever b. malaria c. encephalitis d. Yellow fever

Q fever

Question 43 Which disease is the result of a tick bite? a. murine typhus b. scabies c. Q fever d. all of the above

Q fever

Question 27 The Act that authorized the Environmental Protection Agency to work in partnership with state and local governments in the area of anti-noise programs was the: a. Quiet Communities Act b. Noise Control Act c. Noise Abatement Act d. Environmental Noise Pollution Act

Quiet Communities Act

Question 1 When absorbed daytime heat is radiated quickly into space and the temperature of surface air drops below that of the air above it, the condition is referred to as: a. Radiant energy b. Subsidence inversion c. Radiation inversion d. Thermal reconditioning

Radiation inversion

Question 19 Marks: 1 Hazardous waste is governed by the Choose one answer. a. Clean Water Act b. Occupational Safety and Health Act c. Resource Conservation and Recovery Act d. Food and Drug Act

Resource Conservation and Recovery Act

Question 58 For first responders at an incident, which one of the following is listed correctly according to order of importance? a. Responder safety, environmental safety, public safety, property protection b. Public safety, property protection, responder safety, environmental safety c. Responder safety, public safety, environmental safety, property protection d. Property protection, public safety, responder safety, environmental safety

Responder safety, public safety, environmental safety, property protection

Question 66 Environmental health technicians=assignments differ from environmental health scientists' or sanitarians' assignments in that __. a. A technician's job is more time-consuming but less difficult b. Environmental scientists' and sanitarians' jobs are more time-consuming but less difficult c. Technicians are not required to resolve problems that require the application of new methods and techniques or those that require action beyond the specific work assignment d. Sanitarians and scientists are required to resolve problems but are not required to take action beyond specific work assignments

Technicians are not required to resolve problems that require the application of new methods and techniques or those that require action beyond the specific work assignment

Question 18 The major problem associated with desalinization of water is: a. Lack of technology to do an efficient job b. The amount of energy required c. Lack of funds to expand existing facilities d. Apathy on the part of the public to support such efforts

The amount of energy required

Question 6 The reason that there are differences in the amount of infrared absorption in various climatic regions is because: a. The amount of water vapor varies b. The carbon dioxide content varies c. The ozone layer differs in thickness d. The cloud cover varies

The amount of water vapor varies

Question 52 Why is it important for a business that generates hazardous waste to deal only with licensed disposal companies that have a good compliance history? a. Large companies with good compliance histories generally have deep pockets b. Once the hazardous waste disposal company picks up the waste, it becomes the responsible party c. The business is held accountable for where and how the hazardous waste generated is disposed of d. It is important only if the business generates 220 pounds or more per month of hazardous waste

The business is held accountable for where and how the hazardous waste generated is disposed of

Question 55 The presumptive evidence of the presence of coliform in the MPN test is: a. The color change in the culture media b. Turbidity of the culture broth c. The presence of gas from the fermentation of the media d. Metallic sheen on colonies

The presence of gas from the fermentation of the media

Question 56 If a series of three consecutive water samples from one supply all showed the presence of E coli when each sample was run through presumptive, confirmed and completed tests, the most logical interpretation would be: a. The supply was possibly exposed to human fecal contamination b. The samples were probably collected in dirty bottles c. The sample bottles may have had sodium thiosulfate in them d. The lab technician stuck his thumb in the samples or had contaminated media

The supply was possibly exposed to human fecal contamination

Question 56 The primary reason for fish disappearing from bodies of water becoming acidified is: a. They are killed by the acidity of the water b. They can't breathe in the low oxygen environment that is created c. Their reproductive cycle is disrupted d. They migrate to less acidic waters

Their reproductive cycle is disrupted

Question 31 A problem associated with passage of federal air control standards was: a. They relied on voluntary compliance by states b. The standards were set too high c. The compliance dates were too fast for compliance to occur d. They did not have sufficient "teeth" for enforcement

They relied on voluntary compliance by states

Question 40 Which of the following are examples of short-range primary pollutants? a. Total suspended solids and sulfur dioxide b. Sulfur dioxide and ozone c. Ozone and acid rain d. Total suspended solids and acid rain

Total suspended solids and sulfur dioxide

Question 4 All of the following are considered ionizing radiation except: a. Gamma rays b. Ultraviolet light c. x-rays d. beta particles

Ultraviolet light

Question 38 Considered by many as the source of greatest public exposure related to nuclear power production is: a. Power plant emissions b. Leakage from power plants c. Uranium mill tailings d. Radon gas emissions

Uranium mill tailings

Question91 After flooding and other natural disasters, vaccination is needed for a. Typhoid b. Measles c. Aids d. Vaccinations not required

Vaccinations not required

Question 58 Marks: 1 As you know from previous readings, the composition of soil is very important in the removal of both viruses and bacteria. Which of the following soil conditions is most favorable for removal of viruses? Choose one answer. a. sand over gravel b. fine loamy sand over course sand and gravel c. gravel over semi-porous clay d. course sand and gravel over fine sand or clay

fine loamy sand over course sand and gravel

Question 1 The speed with which emergency action can be taken is largely dependent on a. size of the emergency b. number of flood victims c. prior planning d. volcanic eruptions

prior planning

Question 56 Which is not a primary source for Giardia lamblia cysts? a. beavers b. humans c. roaches d. muskrats

roaches

Question 33 Marks: 1 The only difference between gamma rays, x-rays, and visible light is Choose one answer. a. their charge b. their particle size c. their frequency d. none of the above

their frequency

Question 63 What was the first medical use for mercury? a. dental fillings b. treatment for syphilis c. treatment for arthritis d. treatment for gout

treatment for syphilis

Question 40 Marks: 1 What material has a high melting point, a high atomic number and is used as a target material to produce x-rays? Choose one answer. a. copper b. lead c. aluminum d. tungsten

tungsten

Question 36 Marks: 1 The air gap between the end of the faucet and the overflow rim of the sink should be ______ times the diameter of the supply pipe. Choose one answer. a. 1 1/2 b. 2 c. 3 d. 4

1 1/2

Question 71 It is known that some pathogenic organisms will survive from less than __ day(s) in heat to more than __ in freezing moist soil. a. 1 and 2 months b. 2 and 1 month c. 1 and 2 years d. 3 and 3 years

1 and 2 years

Question 37 Marks: 1 A mature ragweed plant can produce up to ______ pollen grains in one season Choose one answer. a. 1 hundred b. 1 million c. 1 billion d. 1 trillion

1 billion

Question 39 Marks: 1 Biological safety cabinets should be performance tested every Choose one answer. a. 1 year b. 1 month c. 2 years d. 10 years

1 year

Question 26 The depth of the earth required on the final surface of a sanitary landfill is: a. 6 inches b. 2 feet c. 6 feet d. 3 feet

2 feet

Question 12 Marks: 1 Brine from water softening units as low as ______ may inhibit bacterial action in septic tanks. Choose one answer. a. 1.2 percent b. 5.6 percent c. 8.9 percent d. none of the above

1.2 percent

Question 32 Marks: 1 Floors in food processing plants, dairy plants, kitchens, and similar places should be sloped ______ toward each drain. Choose one answer. a. 1/32 to 1/16 inch per foot b. 1/8 to 1/4 inch per foot c. 1/2 to 1 inch per foot d. 3/4 to 1 1/2 inch per foot

1/8 to 1/4 inch per foot

Question 6 Marks: 1 The minimum recommended depth of water under a 1 meter board (1 meter high) is Choose one answer. a. 8 feet b. 9 feet c. 10 feet d. 11 feet

10 feet

Question 11 The emergency plan at a nuclear electric power plant must include a means for notification of the public living within of the plant within a 15-minute period. a. 1 mile b. 5 miles c. 10 miles d. 12 miles

10 miles

Question 1 The estimated number of Americans who have suffered full or partial hearing loss as a result of excessive exposure to noise is: a. 6 million b. 8 million c. 10 million d. 12 million

10 million

Question 23 Marks: 1 The normal economical hauling distance to a refuse disposal site is usually between Choose one answer. a. 5 to 10 miles b. 10 to 15 miles c. 15 to 20 miles d. 20 to 25 miles

10 to 15 miles

Question 19 Marks: 1 A centrifugal pump is limited to use where the lift of the water is not in excess of Choose one answer. a. 33.9 feet b. 20 feet c. 15 feet d. 90 feet

15 feet

Question 36 Marks: 1 The backwash rate for both conventional, rapid and high rate sand filters is Choose one answer. a. 5 gpm/ft2 b. 10 gpm/ft2 c. 15 gpm/ft2 d. 50 gpm/ft2

15 gpm/ft2

Question 53 Marks: 1 The second step of the combustion process in an incinerator requires a high temperature of at least Choose one answer. a. 1500 to 1600 degrees F b. 1500 to 1800 degrees F c. 1900 to 2000 degrees F d. 1800 to 1900 degrees F

1500 to 1800 degrees F

Question 2 Marks: 1 For custard-filled pies to be considered safe, they should be cooked to Choose one answer. a. 155 degrees F for 15 seconds b. 145 degrees F for 15 seconds c. 165 degrees F for 15 seconds d. 135 degrees F for 15 seconds

155 degrees F for 15 seconds

Question 10 Marks: 1 At what time and temperature specifications does a sweetened milk product have to be pasteurized? Choose one answer. a. 155 degrees F for 30 minutes b. 65 degrees F for 30 minutes c. 75 degrees F for 15 seconds d. 100 degrees F for 0.001 seconds

155 degrees F for 30 minutes

Question 24 Unpasteurized eggs NOT intended for immediate service should be cooked to: a. 165F for 15 seconds b. 155F for 15 seconds c. 145F for 15 seconds d. 140F for one minute

155F for 15 seconds

Question 104 The final rinse water temperature of a heat sanitizing warewashing machine should cause the surface of the dishes and utensils to reach which temp? a. 180F b. 160F c. 175F d. 210F

160F

Question 59 Marks: 1 The final rinse water temperature for a heat sanitizing machine dishwasher should be Choose one answer. a. 180 degrees F b. 160 degrees F c. 175 degrees F d. 210 degrees F

180 degrees F

Question 12 Marks: 1 Mobile homes have been in general production since Choose one answer. a. 1943 b. 1954 c. 1965 d. 1970

1954

Question 32 Prior to 2008, there have been no new nuclear reactors ordered by US utility companies in the US since: a. 1976 b. 1978 c. 1980 d. 1982

1978

Question 3 Marks: 1 After a landfill site is closed, it should be covered with at least ______ of compacted soil having a low permeability, graded to shed rainwater, melting snow, and surface water. Choose one answer. a. 5 feet b. 3 feet c. 2 feet d. 6 feet

2 feet

Question 74 Marks: 1 When using presettling reservoirs to eliminate heavy turbidity or pollution before treatment, what is the desirable retention time? Choose one answer. a. 8 hours b. 1 week c. 2 to 3 days d. 1 month or longer

2 to 3 days

Question 33 Before a drinking water sample is taken, the sampling tap should be clean, free of leaks and flushed for how long? a. 1 to 1 ½ minutes b. 2 to 3 minutes c. 4 to 5 minutes d. 6 to 7 minutes

2 to 3 minutes

Question 67 Which of the following has been proven to be most effective for controlling ragweed? a. fenthion b. dieldrin c. 2, 4-D d. petroleum oil

2, 4-D

Question 86 The hydro pneumatic tank typically contains_____ of its volume as water. a. 50 percent b. 80 percent c. 20 percent d. Does not contain water only compressed air

20 percent

Question 30 Marks: 1 One study of basic sanitation and migrant farm workers found that migrants who did not have access to water and sanitation facilities in the field had a clinic utilization rate for diarrhea Choose one answer. a. 10 times that of rural poor b. 20 times that of urban poor c. 15 times that of urban poor d. 20 times that of rural poor

20 times that of urban poor

Question 66 Marks: 1 It is estimated that at any given time, there is/are _____ times more water stored underground than in all the surface streams and lakes. Choose one answer. a. 5 times as much b. 20 to 30 times as much c. one-half as much d. one-tenth as much

20 to 30 times as much

Question 45 Marks: 1 A county or regional landfill should provide enough area for a ______ period of operation. Choose one answer. a. 5- to 10-year b. 10- to 15-year c. 15- to 20-year d. 20- to 40-year

20- to 40-year

Question 33 Marks: 1 The EPA stream water quality rate for fecal coliform is Choose one answer. a. 200 colonies per 100 ml b. 300 colonies per 100 ml c. 100 colonies per 100 ml d. 400 colonies per 100 ml

200 colonies per 100 ml

Question 48 Marks: 1 In sandy soil, sewage organisms can travel about Choose one answer. a. only 10 feet b. 450 feet c. 200 feet d. 1,200 feet

200 feet

Question 77 Landfill sites should be at least __ from streams, lakes or other surface bodies of water a. 200 feet b. 2000 feet c. 200 yards d. 100 feet

200 feet

Question 66 Most ragweed pollen grains settle to the ground within about a. 48 hours after being airborne b. 200 feet of their source c. 24 hours after being airborne d. 500 feet of their source

200 feet of their source

Question 26 Marks: 1 The regulatory level for total cresol under the RCRA Toxicity Characteristic rule is Choose one answer. a. 600 mg/l b. 400 mg/l c. 200 mg/l d. 100 mg/l

200 mg/l

Question 55 Marks: 1 Excreta typically is defined as containing Choose one answer. a. 2000 million fecal coliform, 450 million fecal streptococci, and 400 billion E. coli per 100 to 200 grams b. 250 million fecal coliform, 100 million fecal streptococci, and 40 billion E. coli per 550 grams c. significant levels of heavy metals and toxic chemicals d. 400 ppm chlorinated hydrocarbon

2000 million fecal coliform, 450 million fecal streptococci, and 400 billion E. coli per 100 to 200 grams

Question 49 Marks: 1 Milk is considered Ultra-High Temperature pasteurized if it reaches Choose one answer. a. 145 degrees F (63 degrees C) for 30 minutes b. 194 degrees F (90 degrees C) for 0.5 seconds c. 212 degrees F (100 degrees C) for 1 seconds d. none of the above

212 degrees F (100 degrees C) for 1 seconds

Question 30 Those involved in hazardous waste operations at permitted TSD facilities must receive __ of initial training. a. 16 hours b. 24 hours c. 40 hours d. 8 hours

24 hours

Question 51 Marks: 1 The traditional absorption field should be laid in trenches not more than ______ below the ground surface. Choose one answer. a. 18 inches b. 42 inches c. 24 inches d. 63 inches

24 inches

Question 7 Marks: 1 To prevent chimney backdrafts, the chimney must be constructed ______ inches above the highest point of the roof at a minimum. Choose one answer. a. 4 inches b. 8 inches c. 24 inches d. 48 inches

24 inches

Question 11 Marks: 1 Between 26 B.C. and 395 A.D., the average life expectancy was Choose one answer. a. 73 years b. 36 years c. 45 years d. 24 years

24 years

Question 44 Marks: 1 It has been estimated that waterborne disease worldwide accounts for in excess of Choose one answer. a. 250 million illnesses per year b. 20 million illnesses per year c. 150 million illnesses per year d. 400 million illnesses per year

250 million illnesses per year

Question 53 The estimated half-life of lead in bones is: a. 9 years b. 18 years c. 27 years d. 36 years

27 years

Question 35 What size particles can reach the lowest parts of the lung? a. 15 microns b. 50 microns c. 3 microns d. Any size particle

3 microns

Question 41 In an emergency, people will need __ of water per day each a. 1 to 2 gallons b. up to 3 gallons per family unit c. 3 to 6 gallons d. none of the above

3 to 6 gallons

Question 5 Natural disaster victims should be provided with how much water per day. a. 1 to 3 gallons b. 3 to 6 gallons c. 6 to 9 gallons d. water is not necessary for this population

3 to 6 gallons

Question 33 Hydrogen sulfide is fatal at what concentration? a. 100 ppm b. 200 ppm c. 300 ppm d. 400 ppm

300 ppm

Question 19 Those who work on uncontrolled hazardous waste sites are required to receive a minimum of __ training a. 20 hours b. 4 hours c. 40 hours d. 100 hours

40 hours

Question 58 Marks: 1 Shredding reduces the volume of wastes to about ______ or less of the original bulk. Choose one answer. a. 60 percent b. 50 percent c. 40 percent d. 30 percent

40 percent

Question 76 Marks: 1 Residential cesspool and septic tank soil absorption systems discharge Choose one answer. a. 400 billion gallons of sewage into the ground per day b. 800 billion gallons of sewage into the ground per day c. 800 million gallons of sewage into the ground per day d. 2 billion gallons of sewage into the ground per day

400 billion gallons of sewage into the ground per day

Question 39 Marks: 1 A water leak no larger than 1/8 inch in diameter can result in a loss of up to: Choose one answer. a. 50 gallons in 24 hours b. 100 gallons in 24 hours c. 200 gallons in 24 hours d. 400 gallons in 24 hours

400 gallons in 24 hours

Question 98 Residential cesspool and septic tank soil absorption systems discharge a. 400 million gallons of sewage into the ground each year b. 800 billion gallons of sewage into the ground each year c. 800 million gallons of sewage into the ground each year d. 2 billion gallons of sewage into the ground each year

400 million gallons of sewage into the ground each year

Question 68 Marks: 1 The Department of Energy regulations require solidification of high-level radioactive wastes within ______ of their production. Choose one answer. a. 1 year b. 5 years c. 10 years d. 20 years

5 years

Question 13 What is considered to be the best single strength measure of wastewater polluted water containing degradable waste? a. DO b. 5-day BOD c. COD d. total coliform

5-day BOD

Question 54 Short term exposure to formaldehyde levels above __ can cause serious health or life threatening reactions a. 50 ppm b. 20 ppm c. 10 ppm d. 0.5 ppm

50 ppm

Question 38 Marks: 1 Hardness in drinking water is desirable at levels of Choose one answer. a. 80 to 150 mg/l b. 50 to 80 mg/l c. 0 to 50 mg/l d. 600 to 800 mg/l

50 to 80 mg/l

Question 19 Homes containing garbage disposals should have a septic tank capacity increased by what % in order to accommodate the increased organic loading? a. 10% b. 100% c. 50% d. does not matter

50%

Question 25 Marks: 1 Collection cost is about ______ of the total cost of solid waste management. Choose one answer. a. 10%-20% b. 20%-40% c. 50%-70% d. 70%-90%

50%-70%

Question 28 Marks: 1 A particle count of above ______ is said to be representative of an urban area Choose one answer. a. 10,000 b. 50,000 c. 100,000 d. 200,000

50,000

Question 50 Marks: 1 Barium is a muscle stimulant and in large quantities may be harmful to the nervous system and heart. The fatal dose is Choose one answer. a. 150 to 250 mg b. 550 to 600 mg c. 400 to 475 mg d. 800 to 1000 mg

550 to 600 mg

Question 22 If time only is used as a public health control, the maximum period of time recommended by the FDA for time/temperature control for safety food to be held is: a. 2 hours b. 4 hours if the warmest part of the food item does not exceed 120F c. 6 hours if the warmest part of the food item does not exceed 70F d. This public health control is never permitted.

6 hours if the warmest part of the food item does not exceed 70F

Question 57 Marks: 1 The EPA stream quality indicator for dissolved oxygen in stream water is Choose one answer. a. 3 mg per liter b. 4 mg per liter c. 5 mg per liter d. 6 mg per liter

6 mg per liter

Question 28 Water in wading pools should be completely recirculated every a. 60 minutes b. 90 minutes c. 120 minutes d. 180 minutes

60 minutes

Question 5 Marks: 1 Excessive condensation, corrosion, and mildew occur when the relative humidity exceeds Choose one answer. a. 20 percent b. 40 percent c. 80 percent d. 60 percent

60 percent

Question 70 Resource recovery can be expected to achiever no more than are __ duction in future landfill volume requirement. a. 50 percent b. 25 percent c. 60 percent d. 40 percent

60 percent

Question 24 The gutters or skimmers should receive a minimum if what percent of the total pool water due to the large quantity of organisms and materials which typically float. a. 95% b. 45% c. 60% d. 30%

60%

Question 49 Marks: 1 The volume of the dose from a properly sized dosing tank should be equal to: Choose one answer. a. 20% of the volume of the lines dosed b. 40% of the volume of the lines dosed c. 60% of the volume of the lines dosed d. 100% of the volume of the lines dosed

60% of the volume of the lines dosed

Question 52 Marks: 1 High-density compaction of solid wastes is accomplished by compression to a density of more than ______. Choose one answer. a. 75.5/lb ft3 b. 60.5/lb ft3 c. 66.5/lb ft3 d. none of the above

66.5/lb ft3

Question 25 Marks: 1 A pH between _____ and _____ is optimal PH control for eye irritation, but is not optimal for chlorine effectiveness. Choose one answer. a. 7.5 - 7.6 b. 7.0 - 7.1 c. 7.2 -7.3 d. 7.9 - 8.0

7.5 - 7.6

Question 35 Marks: 1 A pH ______ is probably optimal for minimal eye irritation along with maintenance of effective residual chlorine. Choose one answer. a. above 7.8 b. below 7.2 c. 7.5 to 7.6 d. none of the above

7.5 to 7.6

Question 43 According to the World Health Organization, approximately what percentage of the world's population breathes air that contains health-threatening levels of particulate? a. 50 b. 60 c. 70 d. 80

70

Question 53 Marks: 1 Thermoduric bacteria grow best at a temperature range of Choose one answer. a. 40 degrees F to 58 degrees F b. 60 degrees F to 72 degrees F c. 70 degrees F to 98 degrees F d. 46 degrees F to 118 degrees F

70 degrees F to 98 degrees F

Question 61 The weight and shape of temporary storage containers must be kept within the limits that can be easily and conveniently handled by the collection crew, with the weight preferably not exceeding a. 50 pounds b. 3 pounds c. 70 pounds d. 25 pounds

70 pounds

Question 19 Marks: 1 One piece of refuse-compaction and earth-moving equipment is needed at the landfill site for approximately each Choose one answer. a. 40 loads per day b. 60 loads per day c. 80 loads per day d. 100 loads per day

80 loads per day

Question 15 Marks: 1 Most urban dwellers spend what percent of their total time indoors Choose one answer. a. 10 to 20 percent b. 25 to 50 percent c. 80 to 90 percent d. 70 to 80 percent

80 to 90 percent

Question 14 Slight, irreversible hearing loss may result for many people, from daily exposure over an 8 hour period of time to sound averaging: a. 55 dB b. 65 dB c. 75 dB d. 85 dB

85 dB

Question 95 Reduction of the level of fluorides in drinking water can be accomplished b a. Coagulation b. Lime softening c. Ion exchange d. All of the above

All of the above

Question 28 Which one of the following gave the federal government a modest degree of authority to attack interstate air pollution problems? a. Environmental Protection Act b. Air Quality Act c. Clean Air Act d. Pollution Control Act

Clean Air Act

Question 33 The legal precedents that form the basis of US air quality control regulations currently in effect began with the: a. Air Quality Act of 1967 b. Clean Air Act Amendments of 1970 c. Clean Air Act of 1963 d. Air Quality Standards Act of 1967

Clean Air Act Amendments of 1970

Question 67 Marks: 1 Which bacteria can survive cooking to appropriate levels? Choose one answer. a. Salmonella b. Brucella sp. c. Shigella d. Clostridium perfringens

Clostridium perfringens

Question 93 The presence of which of the following in water would indicate past or possibly intermittent pollution? a. Streptococcus fecalis b. Escherichia coli c. Clostridium perfringes d. Enterococci

Clostridium perfringes

Question 30 Which organisms are most resistant to unfavorable environmental conditions and indicate past or possibly intermittent pollution? a. Fecal streptococci b. Escherichia coli c. Aerobacter aerogenes d. Clostridium sporulates

Clostridium sporulates

Question 49 The majority of sulfur dioxide originated from: a. Automobile exhaust b. Coal and oil burning power plants c. Industrial smelters d. Volcanic eruptions

Coal and oil burning power plants

Question 96 What are the fundamental steps involved in the control of organic chemicals in drinking water? a. Conduct sanitary survey to identify sources, types and amounts of pollution b. Identify pollutants and select treatments methods c. Contact higher level regulatory authorizes for consultation d. Upgrade water treatment plants

Conduct sanitary survey to identify sources, types and amounts of pollution

Question 57 Activated carbon is used to: a. Increase turbidity b. Kill bacteria c. Control tastes and odors d. Keep the chlorine in suspension

Control tastes and odors

Question 46 An HACCP plan is not required when: a. Smoking doods as a method of preservation b. Cooling and reheating TCS foods in bulk c. Performing reduced oxygen packaging d. Using food additives or adding other components to preserve food or render it non-TCS

Cooling and reheating TCS foods in bulk

Question 59 Which one of the following pesticides can be legally used in the United States by the public? a. Diazinon b. Silvex c. 2,4,5,-T d. None of the above

Diazinon

Question 36 Which of the following is least important when reducing sewage to gases? a. Anaerobic bacteria b. Earthworms c. Protozoa d. Aerobic bacteria

Earthworms

Question 41 Marks: 1 Deaths of newborns caused by milk-induced diarrhea has been mainly attributed to the bacteria: Choose one answer. a. Shigella b. Pseudomonas c. Escherichia coli d. Enterobacter aerogenes

Escherichia coli

Question 4 Marks: 1 For a pesticide to be permitted for application on a raw agricultural food or feed, the residue must exceed the tolerance established for the product by the Department of Health and Human Services under the conditions of use. Choose one answer. a. True b. False

False

Question 43 Funding for the collection, storage and disposal of household hazardous waste always come directly from the individuals who generate the waste. a. True b. False

False

Question 49 The United States Environmental Protection Agency has the sole responsibility for implementing "The Noise Control Act of 1971". a. True b. False

False

Question 53 Marks: 1 Areas on the windward side of mountain ranges can expect less precipitation due to the forced rising, expansion, and cooling of moving air masses. Choose one answer. a. True b. False

False

Question 53 Marks: 1 The recommended distance from the bottom of the trench to the ground water table or rock is 62 inches. Choose one answer. a. True b. False

False

Question 60 Marks: 1 A thin sheet of paper will stop a beta particle. Choose one answer. a. True b. False

False

Question 61 Marks: 1 In general terms, it is safe to assume that any two identical sound levels will have the effect of increasing the overall level by 10 dB. Choose one answer. a. True b. False

False

Question 61 Marks: 1 The term "rem" does not take into consideration the biological effect of different kinds of radiation from the same dose in rads. Choose one answer. a. True b. False

False

Question 66 Marks: 1 The placement of the distribution box is not critical as long as it is water tight. Choose one answer. a. True b. False

False

Question 68 Marks: 1 The use of a serial distribution system is considered to have disadvantages over the use of distribution boxes. Choose one answer. a. True b. False

False

Question 7 Marks: 1 DDT has been banned for use in all countries except parts of Africa, Sweden, Great Britain, and all South American Countries. Choose one answer. a. True b. False

False

Question 91 Generic effects from radiation exposure are usually immediately evident. a. True b. False

False

Question 92 Most cells, tissue and organs of the body are independent and the destruction of one will not affect the other. a. True b. False

False

Question 93 Biological effects should govern the required standards of radiological protection. a. True b. False

False

Question 55 When a body of water becomes acidified, the first aquatic species to disappear are generally: a. Bacterial decomposers b. Phytoplankton c. Fish d. Freshwater shrimp

Freshwater shrimp

Question 36 Emissions which find their way into the ambient air without being vented through a stack are known as a. Escape emissions b. Fugitive emissions c. Phantom emissions d. All of the above

Fugitive emissions

Question 7 Which one of the following is most penetrating? a. Alpha rays b. Beta rays c. Gamma rays d. x-rays

Gamma rays

Question 76 The term "genetic radiation" refers to effects of radiation on a. Elderly b. Generations yet unborn c. All living organisms d. Young adult

Generations yet unborn

Question 1 The most widespread cockroach pest in restaurants is a. American cockroach b. Australian c. German d. Oriental

German

Question 1 What is the MOST common cause of bacterial meningitis in children under five years of age? a. Neisseria meningitides b. Group B Streptococci c. Streptococcus pneumoniae d. Haemophilus influenzae type B

Haemophilus influenzae type B

Question 46 By nature, unpolluted rainfall: a. Is devoid of particulate matter b. Has a pH of between 5.0 and 5.6 c. Is slightly alkaline d. Falls only in high lakes areas

Has a pH of between 5.0 and 5.6

Question 55 If a health official finds a nuisance while doing an inspection what is the most simple and practical method to correct the situation? a. Write a citation b. Have the owner correct the situation c. Seek a court order d. Threaten to close the establishment

Have the owner correct the situation

Question 69 The industries least likely to be a source of sulfur dioxide pollution are: a. Metal smelters b. Coal and oil burning power plants c. Refineries d. Hazardous waste incinerators

Hazardous waste incinerators

Question 30 Photochemical smog has been reported in congested areas with a. Large industries b. Chemical processing plants c. Industries processing hazardous wastes d. High motor vehicle traffic

High motor vehicle traffic

Question 38 Particle size selective inlets are used to separate particulates above and below 2 to 3 microns in size on a. High volume samplers b. Oustfall vacuums c. Baghouse air filters d. Atmospheric respirator sieves

High volume samplers

Question 40 The disinfecting ability of chlorine is affected most by: a. BOD b. Temperature c. Hydrogen ion concentration d. Dissolved oxygen

Hydrogen ion concentration

Question 41 Alternative small wastewater treatment systems are considered unless: a. Impervious formations are found at a depth of 10 feet b. Space is limited and surface water supplies are inadequate c. Highly porous formations exist d. High groundwater exists

Impervious formations are found at a depth of 10 feet

Question 59 Police power a. Is about derived from mostly federal laws b. Is assigned entirely to the federal government by the constitution c. Cannot be used except by police officers d. Is almost exclusively left to individual States to establish and enforce laws for the citizen welfare

Is almost exclusively left to individual States to establish and enforce laws for the citizen welfare

Question 29 Perhaps the classic example of X-ray induced malignancy is: a. Lung cancer b. Malignant melanoma c. Leukemia d. Oat cell carcinoma

Leukemia

Question 19 The greatest number of casualties as the result of air pollution occurred in: a. Meuse River Valley, Belgium b. London, England c. Los Angeles, CA d. Donora, PA

Meuse River Valley, Belgium

Question 107 Which of the following is not included in the nine contaminant groups? a. Microorganisms b. Volatile organic chemicals c. Turbidity d. Lead and copper e. Nitrate and nitrite

Microorganisms

Question 61 Which one of the following is false? a. Microwaves cause increased molecule vibration b. Microwaves tissue damage is the result of heat c. Microwaves are a form of ionizing radiation d. There is a linear relationship between microwave frequency and tissue penetration

Microwaves are a form of ionizing radiation

Question 9 What water constituent has been associated with staining plumbing and clothing dark brown or black? a. Zn b. Mn c. Ag d. Ca

Mn

Question 70 In what type structures are indoor levels of formaldehyde likely to be rather high? a. Wood-frames structures b. Concrete block structures c. Mobile homes d. Abode brick structures

Mobile homes

Question 8 An electrical transformer leak of PCBs resulted in the destruction of millions of dollars worth of chicken and eggs in: a. Montana b. New York c. Michigan d. Wisconsin

Montana

Question 50 The majority of nitrogen oxide originates from: a. Motor vehicles b. Volcanic eruptions c. Home waste incineration d. Burning of industrial wastes

Motor vehicles

Question 30 Marks: 1 The appointment and maintenance of an Institutional Biosafety Committee (IBC) is one of the requirements of Choose one answer. a. EPA b. CDC c. NIH d. FDA

NIH

Question 63 Environmental Impact Statements are required by which federal act? a. Resource Planning Act b. Endangered Species Act c. National Environmental Policy Act d. Federal Land Management and Policy Act

National Environmental Policy Act (NEPA)

Question 64 A national performance standard has been developed by the a. National Sanitation Foundation (NSF) b. National Safety Council c. National Institutes of Health d. American Biological Safety Association

National Sanitation Foundation (NSF)

Question 94 Which of the following is a measure of the amount of light scattered by particles suspended in a water test sample? a. Formazin Turbidity Units (FTU) b. Nephelometric Turbidity Units (NTU) c. Jackson Turbidity Units (JTU) d. Lincoln Turbidity Units (LTU)

Nephelometric Turbidity Units (NTU)

Question 40 The first state to implement a motor vehicle inspection and maintenance program was: a. California b. New York c. New Jersey d. Illinois

New Jersey

Question 12 The only criteria gas that is colored is: a. Nitrogen dioxide b. Carbon monoxide c. Ozone d. Sulfur dioxide

Nitrogen dioxide

Question 37 A septic tank maintenance worker has checked an empty tank for the presence of hydrogen sulfide (H2S). The test was negative, and there are no odors indicating the presence of other hazardous gases. Is the tank safe to enter without a respirator and supplied air? a. Yes, because hydrogen sulfide and odors were not detected b. No, because oxygen content and methane were not tested c. Yes, because the absence of odors and H2S indicated acceptable confined space entry conditions d. No, because a lack of H2S is a sign of a hazardous confined space atmosphere

No, because oxygen content and methane were not tested

Question 26 The first national law in the United States Designed to deal with noise was the: a. Quiet Communities Act b. Noise Control Act c. Noise Abatement Act d. Environmental Noise Pollution Act

Noise Control Act

Question 36 Parts of the country that fail to bring their pollution levels into compliance with National Ambient Air Quality Standards are called: a. Defect action areas b. Deficit areas c. Non-attainment areas d. Non-compliant areas

Non-attainment areas

Question 62 The term rem is short for: a. Roentgen energy measure b. Roentgen equivalent measure c. Radiation energy measure d. None of the above

None of the above

Question 82 The FDA requires that sunlamps that radiate UV rays be equipped with timers which automatically shut off after a. 30 minutes or less b. 20 minutes or less c. 10 minutes or less d. None of the above

None of the above

Question 50 If a health official failed to close a restaurant known to have imminent health dangers this is: a. Misdemeanor b. Malfeasance c. misfeasance d. Nonfeasance

Nonfeasance

Question 10 Which one of the following is not natural source of radiation exposure? a. Radioactive minerals b. Cosmic radiation c. Nuclear power plants d. plants

Nuclear power plants

Question 81 The siting of nuclear facilities is subject to extensive regulation and licensing by the a. Federal health department b. National environmental protection agency c. Nuclear regulatory commission d. Consumer product safety commission

Nuclear regulatory commission

Question 39 A sample of water taken for bacteriological analysis is usually packed in ice, if the sample cannot be analyzed immediately. The main reason for this procedure is to retard changes in the: a. Amount of oxygen dissolved in the water b. Mineral content of the water c. Number of bacteria in the water d. pH of the water

Number of bacteria in the water

Question 57 Malignant melanoma seems to be related to: a. Occasional severe sunburn b. Using baby oil as a sunscreen c. Prolonged, low dose exposure to sunlight d. The skin that is most exposed to sunlight

Occasional severe sunburn

Question 51 The reason acid rainfall is a politically-charged issue is: a. Pollutant emissions involved may be produced many miles from regions suffering the effects b. Political parties cannot agree on the penalties to impose on industries that created the problem c. Local governments don't trust the "directives" of "big" government when it comes to environmental issues d. Few representatives from business and industry were consulted as to the potential solution to the problem

Pollutant emissions involved may be produced many miles from regions suffering the effects

Question 64 According to the Safe Drinking Water Act, the minimum number of water samples which must be submitted for bacteriological analysis for a public water supply depends upon the: a. Daily population served b. Population served c. Area of the raw water supply d. Amount of water treated

Population served

Question 56 Which respiratory device provides the best protection? a. Positive pressure respirator with a full face piece b. Negative pressure respirator with a full face piece c. Full-face canister respirator d. Half-face respirator

Positive pressure respirator with a full face piece

Question 66 In plumbing system, where a faucet feeds a sink, it is advisable to have the faucet situated well above the rim of the sink. Why? a. Interference with proper drainage of the sink b. Possible suction of wastewater into the supply of potable water c. Keep the metal of the faucet from coming in contact with the water in the sink d. Keep sink from overflowing

Possible suction of wastewater into the supply of potable water

Question 35 Nutrients associated with eutrophication include all of the following except: a. Organic carbon b. Potassium c. Nitrogen d. phosphates

Potassium

Question 15 Which one of the following crops would probably be least affected by air pollution? a. Peanuts b. Potatoes c. Soybeans d. cotton

Potatoes

Question 53 Which of the following is not a type of hazardous waste incinerator? a. Pressurized b. Fluidized c. Fixed hearth d. Rotary kiln

Pressurized

Question 82 The footing drain is intended to drain water away from the base of the home to a. Prevent damage to the footer and foundation b. Keep the concrete from dissolving c. Control termites d. Control mold on the footer

Prevent damage to the footer and foundation

Question 10 The Amendments to the Safe Drinking Water Act do not cover: a. Municipal wells b. County reservoirs c. Private wells d. Public water systems

Private wells

Question 103 Of the following, which are included as major regulatory requirements in the Safe Drinking Water Act (SDWA)? a. Sampling b. Record keeping c. Public information d. a and b e. b and c

Public information

Question89 One of the first actions an individual should take upon hearing an order for the evacuation of homes and businesses is turn off the a. Main electric power switch b. Outside gas valve c. Property water supply valve d. Public utility services to the building

Public utility services to the building

Question 9 What reference would you use to determine if an infectious waste that contains viable organisms is included? a. OSHA manual b. RCRA Act c. TSCA Act

RCRA Act

Question 87 Which of the following is not a practical method for removal of cadmium? a. Ion exchange b. Lime softening c. Reverse osmosis d. Iron coagulation

Reverse osmosis

Question 43 Improperly located wells, allowing fecal pollution of the water supply, may lead to outbreaks of: a. Botulism, leptospirosis, typhus, fever, malaria b. Brucellosis, strep infections, cholera, yellow fever c. Salmonellosis, shigellosis, cholera, hepatitis d. Relapsing fever, histoplasmosis, psittacosis

Salmonellosis, shigellosis, cholera, hepatitis

Question 88 Typically, an abundant supply of groundwater may be yielded from a. Sedimentary rocks b. Molten rocks c. Igneous rocks d. Metamorphic rocks

Sedimentary rocks

Question 19 Xeriscape landscaping means: a. Using rocks as the basis for yard landscapes b. Eliminating the use of trees in yards for landscaping c. Selecting plants that can thrive on natural precipitation d. Using sand as the basis for all landscaping needs

Selecting plants that can thrive on natural precipitation

Question 24 High level of particulate air pollution have been associated with all of the following except: a. Lung cancer b. Skin cancer c. Heart ailments d. Respiratory disease

Skin cancer

Question 61 Which one of the following is the most common "technological fix" for reduction of sulfur dioxide emissions? a. Coal washing b. Fluidized bed combustion c. Integrated gasification d. Stack gas scrubbers

Stack gas scrubbers

Question 8 One of the main precursors of acid rain is: a. nitrogen oxide b. Carbon dioxide c. Sulfur dioxide d. ozone

Sulfur dioxide

Question 59 Mobilization of metals in acid water becomes a direct threat to human health when: a. Plankton absorb the metal b. The acidified water is a source of drinking water c. Fish are present in the water and die d. Algae disappear from the water

The acidified water is a source of drinking water

Question 63 Marks: 1 Sounds with a frequency of 30 hertz (Hz) are considered very low pitch. Choose one answer. a. True b. False

True

Question 12 Marks: 1 Vector-borne encephalitidies are not communicable directly from person to person, but only by the bite of infected mosquitoes. Choose one answer. a. True b. False

True

Question 20 Marks: 1 The most effective means of control of bats is to "build them out." Choose one answer. a. True b. False

True

Question 24 Marks: 1 Large doses of radiation can be applied to local areas, as in therapy, with little danger. Choose one answer. a. True b. False

True

Question 25 Marks: 1 Support of household hazardous waste management is an avenue for industries to paint themselves as community leaders and defenders of the environment. Choose one answer. a. True b. False

True

Question 3 Marks: 1 It is believed that the ingestion of one virus particle can cause infection in humans. Choose one answer. a. True b. False

True

Question 30 Marks: 1 Ozone can be formed by the action of sunlight on nitrogen oxides and hydrocarbons. Choose one answer. a. True b. False

True

Question 32 Marks: 1 Burning off poisonous plants is not advisable because smoke will carry particles long distances and spread the infection. Choose one answer. a. True b. False

True

Question 33 Marks: 1 It is estimated that approximately 1/3 of water and foodborne diseases are reported. Choose one answer. a. True b. False

True

Question 37 Marks: 1 Plan implementation involves capital improvement programs and financing plans. Choose one answer. a. True b. False

True

Question 43 Marks: 1 Exposure of the gonads (ovaries or testes) is necessary to cause genetic effects from ionizing radiation. Choose one answer. a. True b. False

True

Question 44 Marks: 1 Common deficiencies regarding therapy units may include filtration, exposure control, and calibration. Choose one answer. a. True b. False

True

Question 44 Marks: 1 Financing for municipal capital improvements is generally done by revenue bonds or general obligation bonds. Choose one answer. a. True b. False

True

Question 44 Marks: 1 Individuals react differently to noise depending on age, sex, and socioeconomic background. Choose one answer. a. True b. False

True

Question 44 Marks: 1 The full potential of naturalistic and source-reduction measures should be applied before considering chemical means for controlling arthropods, rodents, and weeds. Choose one answer. a. True b. False

True

Question 45 A household hazardous waste management program draws much of its strength from informed and concerned citizens. a. True b. False

True

Question 45 Marks: 1 One of the common types of ionizing radiation is the x-ray. Choose one answer. a. True b. False

True

Question 47 Bacteria and spores are considered natural sources of air pollution. a. True b. False

True

Question 47 Marks: 1 Soil containing loam will remove most of the phosphorus in sewage effluent. Choose one answer. a. True b. False

True

Question 52 Marks: 1 The dose or energy absorbed by an irradiated object is a function of both the kilovolt and the milliampere settings of the machine. Choose one answer. a. True b. False

True

Question 57 Marks: 1 If 5000 persons were exposed to a background radiation of 0.1 rem per year, this would represent a person-rem exposure of 500. Choose one answer. a. True b. False

True

Question 63 Marks: 1 Everyone is subject to natural background radiation. Choose one answer. a. True b. False

True

Question 64 Disease is considered the antithesis of health, defined as "a state of physical, mental and social well-being and ability to function, and not merely the absence of illness or infirmity." a. True b. False

True

Question 64 Marks: 1 An ordinary chest x-ray produces an exposure of about 0.1 rad; a very heavy diagnostic series, about 10 rads. Choose one answer. a. True b. False

True

Question 66 Marks: 1 Stakeholder Focused Interactive Strategic planning is designed to locate common ground held by all stakeholders in the planning process. Choose one answer. a. True b. False

True

Question 67 Marks: 1 The topography of a subdivision lot usually determines the location of the well with respect to the sewage disposal system. Choose one answer. a. True b. False

True

Question 70 Blackflies are disease vectors for onchocerciasis. a. True b. False

True

Question 71 Marks: 1 The assessment of stakeholders values, interests, and expectations can be used to evaluate the probability of success of a strategic plan. Choose one answer. a. True b. False

True

Question 72 The rabies virus may be contracted from the aerosol of an infected animal's urine, entering through the nose or mouth. a. True b. False

True

Question 73 The best time to apply a herbicide is in the late spring or early summer when plant growth and development is taking place. a. True b. False

True

Question 19 Which food does not require refrigeration at 41F (5C)? a. open container of garlic in oil b. tofu c. sliced/cut cantaloupe d. UHT creamers

UHT creamers

Question 51 The Montreal Protocol agrees to control the a. Use of CFC's b. Use of all ozone depleting chemicals or substances c. Production of ozone depleting chemicals or substances d. Consumption of ozone depleting chemical or substances

Use of all ozone depleting chemicals or substances

Question 72 Dust mites seem to proliferate in the presence of a. Dry conditions b. Use of air conditioners c. Use of humidifiers d. Indoor animals

Use of humidifiers

Question 58 Owners of tanning salons claim they offer a safe tan because they: a. Provide sunscreens for users of the salon b. Use only UVA light c. Use only low level lights d. Continually monitor the progress of clients

Use only UVA light

Question 44 The distance that a sound wave travels in one cycle or period is the a. Sound intensity b. Wavelengths of the sound c. Sound pressure d. frequency

Wavelengths of the sound

Question 62 When is the sanitarian required to obtain a search warrant before entering and searching the kitchen of a restaurant? a. When the owner has refused entry on prior occasions b. When the owner has refused entry on this occasion c. When the owner has not been given advance notice d. When the owner is probably in violation of the regulations

When the owner has refused entry on this occasion

Question 58 A householder says to an inspector, "Go ahead and do your dumb inspection. You'll get in here somehow anyway." May the inspector perform the inspection? a. Yes, because consent, however reluctant, has been given b. No, because the consent was reluctantly given c. No, because consent must be giving in writing for private homes d. No, because the inspector must obtain a court order

Yes, because consent, however reluctant, has been given

Question 46 The US site that appears to be the focus of consideration for the nation's first permanent repository for nuclear waste is in: a. Hanover, WA b. Selma, AL c. Yucca Mountain, NV d. Atlanta, GA

Yucca Mountain, NV

Question 74 The amount of residue left after incineration is approximately a. 10 to 15 percent of the original volume b. 25 percent of the original volume c. 55 to 65 percent of the original volume d. a and b

a and b

Question 101 When the internal temperatures of perishable foods is 40F, growth of which of the following is inhibited? a. Salmonellae b. Staphylococci c. Bacillus cereus d. a and b above

a and b above

Question 24 Marks: 1 Stability of the atmosphere Choose one answer. a. is the ability to enhance or suppress vertical air motions b. is largely determined by the vertical temperature profile c. refers to the inertness of its composition d. a and b above

a and b above

Question 40 Marks: 1 The sand filter is used to Choose one answer. a. remove suspended solids from water b. remove bacteria from water c. sterilize water d. a and b above

a and b above

Question 59 Marks: 1 To determine the resources on a section of property, one should seek the assistance of a person who is experienced and familiar with Choose one answer. a. geology and wildlife b. forestry and engineering c. hydrology and chemistry d. a and b above

a and b above

Question 69 Marks: 1 It is recommended that a contaminated well be abandoned unless Choose one answer. a. all the sources of pollution can be found and removed b. the contaminated stratum from which water is being extracted is effectively sealed off c. the persons drinking the water show no adverse health effects d. a and b above

a and b above

Question 97 Backflow of nonpotable materials into the potable water system may occur by a. Backpressure b. Backsiphonage c. Vacuum in the volume d. a and b above

a and b above

Question 19 Marks: 1 The first step in a rat control program is Choose one answer. a. a baiting program b. code enforcement c. a trapping program d. a community survey

a community survey

Question 47 The housing code, regardless of who promulgates it is a. a complex environment health code requiring the involvement of environmental health scientists and sanitarians b. best left in building and housing departments not associated with the management of environmental health and protection issues c. not a good utilization of the expertise of the environmental health professional d. a program that does not require refined management skills

a complex environment health code requiring the involvement of environmental health scientists and sanitarians

Question 42 Marks: 1 Porosity is Choose one answer. a. a measure of the amount of water that can be held by a rock in its pores or voids, expressed as a percentage of the total volume b. the rate of water at 60 degrees F, in gallons per day, through a cross section of 1 ft squared under a head of 1 ft/ft of water travel c. the amount of water that will drain out of saturated rock or soil by gravity d. the direct relationship between permeability and specific yield

a measure of the amount of water that can be held by a rock in its pores or voids, expressed as a percentage of the total volume

Question 9 Marks: 1 The flushometer valve is typically protected by Choose one answer. a. a non-pressure-type vacuum breaker b. a pressure-type vacuum breaker c. a backflow preventer d. a reduced pressure zone backflow preventor

a non-pressure-type vacuum breaker

Question 27 Marks: 1 The National Pollutant Discharge Elimination System (NPDES) prohibits the discharge of pollutants into U.S. waters unless a permit is issued by Choose one answer. a. EPA b. the State c. wastewater treatment agency d. a or b

a or b

Question 46 Marks: 1 Which of the following is typically used at a residential sewage treatment system with a surface discharge? Choose one answer. a. sodium hypochlorite b. calcium hypochlorite c. liquid chlorine d. a or b above

a or b above

Question 17 Marks: 1 Escherichia coli 0157:H7 has become Choose one answer. a. less of a problem due to antibiotics b. a particular problem for produces and users of ground beef c. a minor threat to children d. not a threat to the elderly

a particular problem for produces and users of ground beef

Question 21 Air monitoring at uncontrolled hazardous waste sites can be conducted by a. a person knowledgeable about industrial hygiene practices b. any person who can operate air monitoring instruments c. all EPA and OSHA personnel d. all hazardous waste workers

a person knowledgeable about industrial hygiene practices

Question 56 Marks: 1 High concentrations of nitrates in drinking water are Choose one answer. a. detrimental to adults b. considered safe to drink c. the cause of a blood disease in teenagers d. a possible cause of methemoglobinemia

a possible cause of methemoglobinemia

Question 41 Marks: 1 A hammering type noise often heard in a plumbing system is usually due to Choose one answer. a. a quick-closing valve requiring installation of an air chamber b. vibrations from machines that require rubber mountings or resilient pads c. the high mineral content of flowing water d. low sound transmission loss of plumbing materials

a quick-closing valve requiring installation of an air chamber

Question 68 Marks: 1 An example of a surface water supply would be Choose one answer. a. a well b. a rock and sand spring c. an earth spring d. a reservoir

a reservoir

Question 22 Which of the following is an unacceptable operating practice at a sanitary landfill? a. all exposed refuse should be covered with six inches of soil at the end of each day's operation b. all refuse should be spread as dumped, compacted into thick layers as it is hauled in c. a specific time and lace should be designated for the dumping of sewage sludge, agricultural wastes and toxic substances d. sufficient stand-by equipment should be available in case of breakdown of equipment

a specific time and lace should be designated for the dumping of sewage sludge, agricultural wastes and toxic substances

Question 28 Marks: 1 From a legal standpoint, which of the following is true regarding enforcement of standards? Choose one answer. a. a Federal standard is easier to enforce than a State standard b. a State standard is easier to enforce than a Federal standard c. a performance standard is easier to enforce than a specification-type standard d. a specification-type standard is easier to enforce than a performance standard

a specification-type standard is easier to enforce than a performance standard

Question 63 Marks: 1 Which of the following soils would be most suitable for subsurface absorption of wastewater Choose one answer. a. a mottled brown and red soil b. a blue soil c. a grayish soil d. a yellow, brown, or red soil

a yellow, brown, or red soil

Question 2 Marks: 1 Stream pollution is sometimes apparent by Choose one answer. a. increased levels of available oxygen in the water b. a zone of degradation c. large numbers of crayfish and cristivomer species d. large numbers of small fish

a zone of degradation

Question 46 Marks: 1 The absorption of how many ergs (energy-per-gram) of air represents one roentgen? Choose one answer. a. about 150 b. about 100 c. about 86 d. about 50

about 86

Question 48 Marks: 1 Soil sterilants are a type of herbicide which are Choose one answer. a. absorbed by the plant root system b. applied to the leaves of the plant c. not effective while plant growth and development are taking place d. both b and c above

absorbed by the plant root system

Question 10 Venturi scrubbers, spray towels and packed towers are examples of what type of waste treatment methods? a. absorption b. adsorption c. dialysis d. filtration

absorption

Question 12 Marks: 1 Microscopic photosynthetic plants of the simplest forms, having neither roots, stems, nor leaves, that are associated with taste and odor, filter clogging, and other water problems are known as Choose one answer. a. yeasts b. algae c. protozoa d. rotifiers

algae

Question 10 Marks: 1 Precipitation accomplishes an effective cleansing process of pollutants in the atmosphere by Choose one answer. a. accumulation of small particles in the formation of raindrops or snowflakes in clouds b. the washing out of scavenging of large particles by falling raindrops or snowflakes c. removal of gaseous pollutants by dissolution and absorption d. all of the above

all of the above

Question 11 Marks: 1 The geophysical methods used to identify and investigate the extent and characteristics of ground water pollution include Choose one answer. a. geomagnetics b. electromagnetics c. electrical resistivity d. all of the above

all of the above

Question 13 Marks: 1 The reasons for nosocomial infections in hospitals, and nursing homes are Choose one answer. a. older patients with chronic diseases b. increased numbers of high risk patients c. invasive procedures d. all of the above

all of the above

Question 14 Marks: 1 A pesticide that ______ is referred to as a "Restricted Classification" pesticide and is generally not available to the homeowner. Choose one answer. a. is highly toxic b. requires special knowledge for application c. requires special equipment for application d. all of the above

all of the above

Question 15 Which of the following is a method by which recreational waters may be contaminated? a. infected people b. surface runoff c. normal water flora d. all of the above

all of the above

Question 15 Marks: 1 Hazardous wastes include ______ substances. Choose one answer. a. chemical b. biological c. flammable d. all of the above

all of the above

Question 16 The written safety and health program must incorporate a. comprehensive work plan b. medical surveillance program c. standard operating procedures for safety and health d. all of the above

all of the above

Question 16 Marks: 1 A state radiation protection program may involve control of Choose one answer. a. x-ray units and radioactive materials b. waste disposal c. environmental monitoring and surveillance d. all of the above

all of the above

Question 17 Which increases the chance of pollution travel? a. acidic soil conditions b. lack of organic materials c. lack of Fe, Mg, Ca d. all of the above

all of the above

Question 17 Marks: 1 The Federal Insecticide, Fungicide, and Rodenticide Act Choose one answer. a. requires that an Environmental Protection Agency registration number be put on all pesticide products b. provides for registration of pesticides manufacturing and formulating c. provides for State certification of applicators who are qualified to use certain restricted pesticides d. all of the above

all of the above

Question 2 The evacuation and survival of individuals in an emergency or natural disaster are dependent of the extent to which a. individuals can help themselves b. how soon relief can be mustered c. how soon a favorable or controlled environment can be restored d. all of the above

all of the above

Question 22 Marks: 1 Granular activated carbon (GAC) filters are used to Choose one answer. a. treat water for soft drinks and bottled drinking water b. remove taste and odor producing compounds c. remove synthetic organic chemicals (suspected carcinogens) d. all of the above

all of the above

Question 23 Marks: 1 Ozone is effective against Choose one answer. a. amoebic cysts b. bacteria and phenols c. viruses d. all of the above

all of the above

Question 24 Marks: 1 Exposure to formaldehyde can cause Choose one answer. a. irritation to the respiratory passages b. contact dermatitis c. disturbed sleep d. all of the above

all of the above

Question 24 Marks: 1 Which of the following factors slow(s) down biological activity and preserve(s) food? Choose one answer. a. high or low temperatures b. reduced moisture c. salt d. all of the above

all of the above

Question 25 Containers used in site clean-up operations must be marked and labeled in accordance with regulations. a. OSHA EPA b. DOT c. all of the above

all of the above

Question 26 Marks: 1 When a suitable site is being selected for a particular purpose, which of the following must be known before any property is investigated? Choose one answer. a. the type of facility that is to be maintained b. the desired use of the facility c. the type functions, activities, and programs to be held d. all of the above

all of the above

Question 27 Marks: 1 Comprehensive community planning includes which of the following steps? Choose one answer. a. public information and involvement b. statement of goals c. basic studies d. all of the above

all of the above

Question 27 Marks: 1 The assemblage of large numbers of people in a limited area requires that certain minimum facilities be provided. Some guidelines to assist in the preparation for mass gatherings include Choose one answer. a. a plan showing area of site and location in relation to towns within 20 miles b. refuse storage and disposal c. noise control d. all of the above

all of the above

Question 27 Marks: 1 Which or the following are the most frequent disease transmission routes in child day care centers? Choose one answer. a. respiratory b. fecal oral route c. intimate contact d. all of the above

all of the above

Question 28 Uncontrolled hazardous waste sites must have an emergency response plan with the following elements a. emergency recognition and prevention b. site security and control c. emergency alerting and response procedures d. all of the above

all of the above

Question 29 Marks: 1 Wasps are usually attracted to Choose one answer. a. bright-colors b. protein c. sweet odors d. all of the above

all of the above

Question 3 Marks: 1 It is possible to control noise Choose one answer. a. at the source b. in its path of transmission c. where it is received d. all of the above

all of the above

Question 33 Marks: 1 Routine and frequent inspections of food-processing and food-service establishments alone does not ensure that adequate levels of sanitation will be met. Inspections must be supplemented with Choose one answer. a. quality control b. education c. management supervision d. all of the above

all of the above

Question 36 Marks: 1 The purpose of public information and community action is which of the following? Choose one answer. a. to stimulate and provide channels for individuals to respond with information and ideas b. to keep the public informed c. to allow the planner to have a better relationship with the public d. all of the above

all of the above

Question 57 Most mobile homes are a. occupied by the owners b. 33 percent are 65 years old or older c. 33 percent are 35 years old or younger d. all of the above

all of the above

Question 57 Marks: 1 According to the United States Environmental Protection Agency, solid waste does NOT include Choose one answer. a. manures and crop residues that can be returned to the soil as fertilizer or soil conditioners b. mining or milling wastes intended for return to the mine c. solid or dissolved material in domestic sewage d. all of the above

all of the above

Question 59 Marks: 1 A dragline may be used at a landfill site for Choose one answer. a. digging trenches b. stockpiling cover material c. placing cover material over refuse d. all of the above

all of the above

Question 59 Marks: 1 Proper disinfection of water using chlorine depends on the concentration of chlorine plus which of the following? Choose one answer. a. temperature of the water b. pH of the water c. contact period d. all of the above

all of the above

Question 64 Marks: 1 The major factors related to hearing loss are Choose one answer. a. time duration of exposure and repeated impact b. intensity of sound waves c. frequency content of sound d. all of the above

all of the above

Question 67 Marks: 1 The effectiveness of disinfection depends on Choose one answer. a. the degree of treatment the sewerage has received b. the amount of chlorine used, and the residual chlorine maintained c. the mixing and retention period d. all of the above

all of the above

Question 7 Which of the following is the most effective technique for ceasing operation of a noncomplying establishment? Choose one answer. a. a mandatory injunction b. revoking a license c. an injunction d. all of the above

all of the above

Question 7 Marks: 1 Many of the problems associated with migrant labor camps are related to Choose one answer. a. infectious and parasitic diseases b. economic exploitation c. poor housing, facilities, and basic sanitation d. all of the above

all of the above

Question 70 Marks: 1 General obligation bonds Choose one answer. a. guarantee payment by the municipality through a government tax b. are paid back by all the people in the community c. may be used to pay off a revenue-producing capital improvement d. all of the above

all of the above

Question 8 Marks: 1 The plans for an area to be sewered should Choose one answer. a. be prepared by a licensed professional engineer b. include specifications and an engineering report c. include the problem, objectives and design details d. all of the above

all of the above

Question 22 Marks: 1 The statement of goals and objectives should recognize environmental quality and community needs such as Choose one answer. a. clean air b. clean food service establishments c. decent housing d. all the above

all the above

Question 4 Which is included in the sanitary survey of groundwater supplies? a. aquifer drainage area and local geology b. nature of soil, rock strata and local geology c. land use and habitation, sources of pollution and local geology d. all the above

all the above

Question 9 Marks: 1 Which of the following have little penetrating power and are normally a hazard to health only in the form of internal radiation received through ingestion, inhalation, or open wounds? Choose one answer. a. x-rays b. alpha particles c. beta particles d. gamma rays

alpha particles

Question 22 Marks: 1 A comprehensive water supply study must include Choose one answer. a. trunk lines and pumping stations b. handling of special wastes c. alternative sources of water d. grit screening and sludge disposal

alternative sources of water

Question 79 Marks: 1 This substance is the first product of the decomposition of organic matter. Its presence in water usually indicates "fresh pollution" of sanitary significance. What is it? Choose one answer. a. ammonia b. sugar c. carbon dioxide d. hydrogen sulfide

ammonia

Question 41 Marks: 1 All of the following will generally vary directly with the quantity of water used for domestic purposes except Choose one answer. a. availability of water b. habits of the people c. cost of water d. amount of minerals in the water

amount of minerals in the water

Question 16 Marks: 1 For every 1,000 new people, a community will require all of the following except Choose one answer. a. the collection and disposal of 548 to 730 tons of solid waste per year b. an additional supply of 10 to 30 million gallons of water per year c. 10.0 or more acres of land for schools, parks, and play areas d. two to four additional hospital beds and three nursing home beds

an additional supply of 10 to 30 million gallons of water per year

Question 5 Marks: 1 The most important factor leading to the abandonment of a site is related to Choose one answer. a. an adequate, safe sewage disposal system b. an adequate, safe solid waste disposal system c. the adequate, safe generation of electricity d. an adequate, safe water supply

an adequate, safe water supply

Question 21 The major impact of global warning would most likely be in: a. a general decrease in human skin cancer b. an increase in human skin cancer c. an alteration of world-wide rainfall d. a melting in the polar cap

an alteration of world-wide rainfall

Question 24 Marks: 1 A GAP analysis is Choose one answer. a. an analysis of the future state b. an analysis of the current state c. an analysis of the distance between the current state and the future state d. none of the above

an analysis of the distance between the current state and the future state

Question 66 The implementation of a biosafety program begins with a. an assessment of risk b. the development of a biosafety manual c. training the laboratory personner d. consultation with CDC and NIH

an assessment of risk

Question 13 Marks: 1 The control of corrosion in piping requires all of the following steps except Choose one answer. a. development of protective coating inside pipes b. the use of corrosion-resistant pipe materials or pipe coatings c. an increase in water velocity d. control of electrochemical action

an increase in water velocity

Question 20 Marks: 1 Universal precautions refer to Choose one answer. a. specific respiratory protection used in hospitals b. an infection control measure in which all human blood and certain body fluids are treated as infectious c. procedures used when handling hazardous wastes d. none of the above

an infection control measure in which all human blood and certain body fluids are treated as infectious

Question 22 Marks: 1 Hemolytic Uremic Syndrome is caused by Choose one answer. a. mental stress b. a virus c. an infection with Escherichia coli 0157:H7 d. listeriosis

an infection with Escherichia coli 0157:H7

Question 12 Which statement is correct in regards to methane gas production? a. aerobic methane gas-producing bacteria produce methane b. anaerobic methane gas-producing bacteria produce methane c. acidic conditions prohibit methane production d. acidic conditions do not influence methane production

anaerobic methane gas-producing bacteria produce methane

Question 43 At a trial, the technical person called as a witness should: a. answer all questions truthfully and directly b. refer to notes given by the prosecuting attorney c. volunteer as much information as possible to all questions d. refuse to answer questions he feels are improper

answer all questions truthfully and directly

Question 70 Marks: 1 Pasteurization of milk product does not eliminate which of the following? Choose one answer. a. toxins b. anthrax spores c. pesticides d. any of the above

any of the above

Question 20 Marks: 1 Which of the following waste material is not classified as a California list waste that is banned from land disposal? Choose one answer. a. liquid having pH equal or less than 2 b. any solid waste c. PCBs greater than 50 mg/l d. liquid waste containing 130 mg/l thallium

any solid waste

Question 24 The type of sanitary landfill that should be developed on essentially flat land sited in dry areas is: a. depression landfills b. area landfills c. progressive excavation landfills d. cut and cover landfills

area landfills

Question 33 The two most common methods of sanitary landfill operation are a. composting and recycling b. open dump and burning c. area method and trench method d. wet area and dry area

area method and trench method

Question 36 Marks: 1 The best sanitary landfill method for an area with rolling terrain is the Choose one answer. a. low-area method b. valley or ravine area method c. trench method d. area or ramp method

area or ramp method

Question 1 Which one of the following is not a man-made toxic substances? a. polychlorinated biphenyls b. asbestos c. dioxin d. cadmium

asbestos

Question 24 Perhaps the number one cause of disease as a result of general environmental exposure is: a. TCCD b. PCBs c. asbestos d. dioxin

asbestos

Question 6 Which one of the following sources of noise has been declining slightly in recent years? a. motorcycle b. automobile c. aircraft d. industrial

automobile

Question 12 Marks: 1 Large items that are not recyclable should be Choose one answer. a. set directly into the landfill b. placed in a separate area of the landfill for periodic burial c. compressed or shredded d. b and c

b and c

Question 7 Marks: 1 There is a scientific consensus that further increases in life expectancy are dependent on the extent to which Choose one answer. a. cancer can be controlled b. personal lifestyles can be changed c. pollution can be controlled d. b and c above

b and c above

Question 7 Marks: 1 Which of the following methods of backsiphonage prevention is least effective? Choose one answer. a. barometric loop b. vacuum breakers c. air gap separation d. backpressure units

barometric loop

Question 40 Marks: 1 The biosafety containment level suitable for work involving agents of moderate potential hazard to personnel and the environment is Choose one answer. a. biosafety level 1 b. biosafety level 2 c. biosafety level 3 d. biosafety level 4

biosafety level 2

Question 62 Campylobacter (C. jejuni/C. coli, C. fetus subsp. fetus) may be safely used in the laboratory as a minimum at a. biosafety level 1 b. biosafety level 2 c. biosafety level 3 d. biosafety level 4

biosafety level 2

Question 30 Marks: 1 Which of the following is not considered a satisfactory solution to the problem of chemical contamination in well systems? Choose one answer. a. abandoning the well b. boiling the water c. connecting to a public water system d. building a new, properly constructed, drilled well

boiling the water

Question 3 Marks: 1 Swimming pool water clarity is measured in terms of Choose one answer. a. NTU b. Secchi disk readings c. ORP d. both A and B

both A and B

Question 12 Marks: 1 People at increase risk for listeriosis are Choose one answer. a. pregnant women b. newborns c. men d. both a and b

both a and b

Question 24 Employers are required to develop and implement a program to inform __ of the degree of exposure likely as a result of participation in hazardous waste operations. a. employees b. contractors c. attorneys d. both a and b

both a and b

Question 4 If temporary shelter is necessary in an emergency, shelter selection should take into consideration a. protection from flooding and the elements b. availability of heat, light and space c. both a and b d. color of chlorination tablets

both a and b

Question 47 According to "Universal Precautions", which of the following are considered to be infectious? a. all blood from human sources b. certain body fluids c. body contact d. both a and b

both a and b

Question 5 Marks: 1 Domestic wastewater which passes through a sewer system to a POTW is not considered to be a ______. Choose one answer. a. solid waste b. hazardous waste c. sewer waste d. both a and b

both a and b

Question 52 Marks: 1 When it is not possible to collect and examine a large number of samples for bacteria exam inations, an indication of the sanitary condition of the milk can be obtained by Choose one answer. a. methylene blue reduction test b. resazurin test c. both a and b above d. none of the above

both a and b above

Question 56 Marks: 1 A relatively porous landfill earth cover will permit Choose one answer. a. the escape of gases b. greater infiltration and leachate production c. both a and b above d. none of the above

both a and b above

Question 56 Individuals assigned to regulatory programs should be a. exceptionally qualified by both training and experience b. have degrees in institutional control c. have achieved appropriate certifications d. both a and c

both a and c

Question 16 Marks: 1 Which of the following statements is (are) true? Choose one answer. a. all surface water must be considered unsanitary unless given adequate treatment b. all groundwater supplies may be considered safe as a potable water supply c. when considering surface water as a water supply, the entire watershed must be surveyed d. both a and c above

both a and c above

Question 21 Marks: 1 Before trying to convert an "open dump" into a sanitary landfill, you must first Choose one answer. a. remove all previous waste to another site b. institute a rat-poisoning program 2 weeks before conversion c. develop a plan of operation, supervision, maintenance, and a drawing showing your proposed plans d. both b and c above

both b and c above

Question 61 Marks: 1 Haphazard development can be controlled by comprehensive local and regional planning if Choose one answer. a. public powers levy higher taxes b. public powers regulate development c. broad public powers and regulatory authority are provided d. none of the above

broad public powers and regulatory authority are provided

Question 36 Advantages of the land disposal of digested sewage (sludge) include all except: a. addition of some nutrients to the soil b. improving aeration of tight soils c. an aid to erosion control of treated soil d. build-up of heavy metals in the soil

build-up of heavy metals in the soil

Question 87 Plants absorb certain constituents of wastewater; using wastewater for irrigation of consumable plant products may present a health hazard to humans if the water contains a. nitrates b. iron c. cadmium d. chlorides

cadmium

Question 20 Marks: 1 The Langelier index is used to determine the point of stability of Choose one answer. a. aluminum sulfate b. calcium carbonate c. water pH d. HOCl

calcium carbonate

Question 82 Chemical coagulation, flocculation, sedimentation, and filtration will remove nearly all bacteria, viruses, protozoa and helminths if supplemented by a. desalination b. chlorination c. over 4 feet of loamy soil d. all of the above

chlorination

Question 13 The consumer product most significant in terms of radiation exposure is: a. Wrist watch dials b. TV receivers c. Microwave ovens d. cigarettes

cigarettes

Question 5 When a health violation is classified as a misdemeanor, it can be more readily resolved by ______. Choose one answer. a. criminal proceedings b. civil action c. immediately closing the facility d. posting a public notice

civil action

Question 46 The increase of dissolved solids due to evaporation in whirlpools, hot tubs and spas is indicated by a. increased water temperature b. condensation c. cloudy water d. foamy water

cloudy water

Question 65 Marks: 1 The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? Choose one answer. a. shigella dysenteriae b. coliform c. entamoeba histolytica d. salmonella typhosa

coliform

Question 2 What public health factor is of primary importance in determining the sanitary quality of recreational waters? a. heavy metals b. coliforms c. human waste d. solid waste

coliforms

Question 4 Marks: 1 When storm water and domestic sewage enter the same sewer it is known as a Choose one answer. a. sanitary sewer b. combined sewer c. separate sewer d. storm sewer

combined sewer

Question 63 The primary health problems of developing countries are a. diphtheria and pertussis b. heart disease c. cancer and disease d. communicable disease and malnutrition

communicable disease and malnutrition

Question 38 Marks: 1 The commonly acceptable refuse disposal and treatment methods are Choose one answer. a. wet oxidation, sanitary landfilling and compaction b. incineration, pyrolization, and anaerobic digestion c. composting, recylcing, incineration, and sanitary landfilling d. burial at sea, incineration, and sanitary landfilling

composting, recylcing, incineration, and sanitary landfilling

Question 85 One of the most important factors contributing to disease transmission of microbiological agents is a. chlorination b. concentration or dose of microorganisms c. filtration d. flocculation

concentration or dose of microorganisms

Question 38 Marks: 1 A certified industry inspection is an inspection Choose one answer. a. conducted by a certified local governmental unit b. conducted by a certified state official c. conducted by a certified member of the industry d. conducted by a federal agency

conducted by a certified member of the industry

Question 24 The 5-day BOD test should be performed when: a. measuring the concentration of suspended solids in wastewater b. determining the bacteriological quality of drinking water c. conducting a series of tests to determine the degree of water pollution d. requiring more rapid results than can be obtained by using the COD test

conducting a series of tests to determine the degree of water pollution

Question 75 The favored method disposal of domestic wastewater is a. septic tank seepage field b. community package system c. buried sand filter d. connection to public sewer system

connection to public sewer system

Question 10 Which one of the following phrases MOST accurately describes the term endemic? a. sporadic occurrence of an illness b. illness that exceed expected levels c. all illness present at any one time d. constant presence of an illness

constant presence of an illness

Question 24 Marks: 1 The term "endemic" means Choose one answer. a. sporadic occurrence of an illness b. constant presence of an illness c. all illnesses present at any one time d. an unusually large number of persons with the same illness

constant presence of an illness

Question 7 Listeriosis is COMMONLY associated with: a. contaminated water b. contaminated food c. infected mice d. infected birds

contaminated food

Question 5 How often should refuse he compacted during the average work day? a. every hour b. continually c. every two hours d. at the end of the day

continually

Question 37 Marks: 1 The recommended and most effective method of maintaining pool water quality is Choose one answer. a. super-chlorination b. intermittent circulation, chlorination, and filtration c. continuous recirculation, chlorination, and filtration d. chlorination - dechlorination

continuous recirculation, chlorination, and filtration

Question 46 Engineering controls are: a. controls that isolate or remove hazards from the workplace b. less effective than good training c. the last option that should be considered d. less effective than personal protection processes

controls that isolate or remove hazards from the workplace

Question 10 Marks: 1 One of the ways to recognize a well designed and properly operated pool is when you find the water at the time of inspection to be Choose one answer. a. crystal clear, with the proper level of approved disinfectant, and a PH level of 7.4 b. crystal clear, with the proper level of approved disinfectant, and a PH level of 8.4 c. crystal clear, with the proper level of approved disinfectant,, and a PH level of 6.8 d. crystal clear, with the proper level of approved disinfectant,, and a PH level of 7.0

crystal clear, with the proper level of approved disinfectant, and a PH level of 7.4

Question 70 Marks: 1 The conversation of seawater or brackish water to fresh water is called Choose one answer. a. decontamination b. purification c. desalination d. dehydration

desalination

Question 47 Marks: 1 General overall policy planning includes all of the following except Choose one answer. a. aspirations and realistic objectives b. detailed engineering and specific architectural project plans c. identification of goals d. establishment of functional priorities

detailed engineering and specific architectural project plans

Question 89 Practically all foods, whether canned, pickled, cured or dried a. perish and become part of the phosphorous cycle b. are no longer sanitary after six months on the shelf c. will become unsanitary after eighteen months of storage d. deteriorate upon storage

deteriorate upon storage

Question 6 Which of the following is the most critical step needed before detailed information is collected? Choose one answer. a. determining how the information will be used b. determining how often the information will be updated c. determining how much time will be needed for data collection d. determining how much time will be needed for the record-processing unit to enter the data

determining how the information will be used

Question 10 Marks: 1 In unsewered areas, the responsibility for water and sewer for new subdivisions is assigned to the Choose one answer. a. local department of public works b. local government c. new owners d. developer

developer

Question 44 In unsewered areas, the responsibility for water and sewer for new subdivisions is assigned to the a. local department of public works b. local government c. new owners d. developer

developer

Question 27 Decontamination solvents must be a. disposed of properly b. reused continuously until the site clean-up is complete c. inspected by OSHA personnel d. inspected by EPA personnel

disposed of properly

Question23 A medical surveillance program must be provided to workers at hazardous waste sites by the a. worker's health insurance b. OSHA c. Federal government d. employer

employer

Question 6 Mosquitoes have been known to spread: a. typhus fever b. encephalitis c. shigellosis d. salmonella

encephalitis

Question 40 Marks: 1 ______ can be recovered from refuse by burning it in a refractory lined incinerator or water-wall incinerator. Choose one answer. a. glass b. aluminum c. ferrous metal d. energy

energy

Question 33 Marks: 1 Which of the following is not true concerning sewage and disease hazards? Choose one answer. a. all sewage should be considered contaminated with disease-producing organisms b. entamoeba histolytica, hepatitis viruses, and giardia cysts are easily destroyed by normal chlorination of sewage c. sewage sludge may not be safe to use as a soil builder or fertilizer supplement d. it cannot be assumed that relationships between sewage discharge and diseases do not exist if no clinical cases are reported

entamoeba histolytica, hepatitis viruses, and giardia cysts are easily destroyed by normal chlorination of sewage

Question 51 In the event of a toxic spill, what is the first thing to be done? a. wash the spill area b. evacuate all unnecessary personnel c. don a SCUBA and begin clean-up d. notify the manufacturer of the chemical

evacuate all unnecessary personnel

Question 8 An administrative process of measuring and analyzing results in relation to specific goals, objectives, aims or targets is Choose one answer. a. record keeping b. daily activity reports c. coding d. evaluation

evaluation

Question 80 How often should a septic tank for a private home be serviced? a. every year b. every 5 to 10 years c. every 3 to 5 years d. every 10 years

every 3 to 5 years

Question 26 Airborne exposure to asbestos fibers is most commonly associated with: a. naturally occurring flaking of mineral outcroppings b. fibers being released through automobile braking c. deterioration of man-made, asbestos-containing material d. accidents that occur in the manufacturing industry

fibers being released through automobile braking

Question 8 Marks: 1 The generally prohibited swimming facility from a public health perspective is a Choose one answer. a. home outdoor pool b. fill and draw pool c. natural flow-through pool d. recirculating pool

fill and draw pool

Question 50 The fresh water supply line to the pool must a. have a direct solid connection to the public water line b. fill to the pool through an approved air gap c. have an approved pump hooked to the public water supply line to suck the water to the pool for fast fills d. none of the above

fill to the pool through an approved air gap

Question 8 Which soil condition is most favorable for removal of viruses? a. sand over gravel b. fine loamy sand over coarse sand and gravel c. gravel over semi-porous clay d. coarse sand and gravel over fine sand or clay

fine loamy sand over coarse sand and gravel

Question 29 When sewage treatment lagoons are excavated from fractured rock such as slate or shale, there is a danger that if sewage is stored in these lagoons, the sewage may: a. flow untreated through the rock fractures and contaminate aquifers b. react chemically with the rock and emit toxic gases c. evaporate too quickly and cause an odor nuisance d. plug the rock fractures and not percolate into the ground

flow untreated through the rock fractures and contaminate aquifers

Question 6 Marks: 1 An unacceptable use of radiation is Choose one answer. a. osteopathy b. chiropody c. fluoroscopy for the purpose of fitting shoes d. all of the above

fluoroscopy for the purpose of fitting shoes

Question 9 Marks: 1 Scrubbers are wet collectors generally used to remove particles that form as a Choose one answer. a. nonsoluable vapor b. mist, solid, or vapor c. fog, mist, or dust d. fume, dust, or mist

fog, mist, or dust

Question 2 According to EPA which is not a characteristic of hazardous waste. a. friability b. toxicity c. reactivity d. corrosivity

friability

Question 27 Marks: 1 Which of the following is not a type of hazardous waste incinerator? Choose one answer. a. rotary kiln b. fixed hearth c. fluidized bed d. fuel blending

fuel blending

Question 71 The disposal of used tires presents a problem but shredded tires may be used as a. a source of heat for homes b. fuel for industries c. an asphalt additive to reduce pavement cracking d. a supplemental fuel for incinerators

fuel for industries

Question 29 Marks: 1 Street dust would be considered what type of pollution? Choose one answer. a. paradox pollutant b. fugitive pollutant c. uncontrolled pollutant d. laps rate

fugitive pollutant

Question 28 Marks: 1 Mycotoxins are poisonous chemicals produced by Choose one answer. a. bacteria b. vertebrates c. viruses d. fungi

fungi

Question 41 Marks: 1 The grinding of garbage is an acceptable method of Choose one answer. a. garbage disposal b. volume reduction c. wet oxidation d. energy recovery

garbage disposal

Question 24 Which one of the following may be the most devastating to biodiversity? a. over hunting b. global warming c. pollution d. habitat destruction

global warming

Question 17 What is the most important step in wastewater operations? a. proper equipment selection b. on-going maintenance of equipment c. good housekeeping d. knowing the limitations of the waste

good housekeeping

Question 21 Marks: 1 Which of the following is used to properly seal a drilled well to prevent contamination of the water supply? Choose one answer. a. epoxy b. a mixture of sand and mud c. grouting d. a rubber seal with silicone adhesive

grouting

Question 38 Which one of the following gases was not scheduled for phaseout by 1996 as a result of the Montreal Protocol? a. chlorofluorocarbon b. halon c. methyl chloroform d. carbon tetrachloride

halon

Question 72 Marks: 1 The type of water that makes it difficult to produce suds or to rinse laundry, dishes or food equipment is Choose one answer. a. soft water b. hard water c. spring water d. distilled water

hard water

Question 71 Marks: 1 Food inspection programs of the future will focus increasingly on Choose one answer. a. hazard analysis and critical control point evaluations b. more frequent inspections c. more rigid enforcement of all rules d. increased food handler exams

hazard analysis and critical control point evaluations

The yellow pages of the emergency response guidebook lists a. commercial companies who respond to emergencies b. hazardous material by ID number c. guides to use when responding to hazardous material transportation incidents d. none of the above

hazardous material by ID number

Question 26 If equipment or clothing is sent from an uncontrolled hazardous waste site for cleaning, the __ associated with the equipment must be communicated to the off-site facility. a. specifications b. sizes c. hazards d. none of the above

hazards

Question 60 Marks: 1 A certificate of compliance is issued by the ______ when a system is properly installed. Choose one answer. a. manufacturer b. health department c. EPA d. property owner

health department

Question 70 Marks: 1 To produce thermal effects, microwave energy is converted to ______ in the body or organism. Choose one answer. a. chemical energy b. mechanical energy c. power d. heat

heat

Question 50 Marks: 1 Microwave ovens that have magnetron tubes use electrical energy to generate Choose one answer. a. low frequency, short wave energy b. high frequency, long wave energy c. high frequency, short wave energy d. low frequency, long wave energy

high frequency, short wave energy

Question 4 Which one of the following is a characteristics of PCBs? a. hard soil b. high water solubility c. low boiling point d. high heat resistant

high heat resistant

Question 28 Marks: 1 The gas causing the distinct "rotten egg" odor in many water sources is Choose one answer. a. hydrogen sulfide b. carbon dioxide c. chlorine gas d. hydrogen carbonate

hydrogen sulfide

Question 15 Marks: 1 Celery, a major source of salad contamination, has proven to be acceptable when Choose one answer. a. bathed with the juice of citrus fruits such as grapefruits, oranges, lemons or limes b. blanched for a few seconds in water at a rolling boil c. placed in a vinegar solution for three hours prior to use d. immersed in boiling water for thirty seconds, then chilled under running tap water

immersed in boiling water for thirty seconds, then chilled under running tap water

Question 47 Marks: 1 Centrifugal pumps are of several types depending on the design of the Choose one answer. a. volute b. shaft c. impeller d. mechanical seal

impeller

Question 26 Marks: 1 The contamination of milk with sediment is typically the result of which of the following? Choose one answer. a. improper cleaning of milking apparatus b. improper cleaning of the cow c. improper handling of the milk d. improper vaccination for brucellosis

improper cleaning of the cow

Question 17 What is the most common contributing factor to foodborne illness? a. insect and rodent infestations b. dirty equipment c. incorrect labeling of containers d. improper holding temperatures

improper holding temperatures

Question 77 Marks: 1 Which would be the least effective method of controlling condensation of moisture in food preparation areas? Choose one answer. a. increase air temperature b. decrease humidity of air c. increase humidity of air d. cool the air

increase air temperature

Question 23 Marks: 1 Those laboratory activities that may result in personnel exposure to aerosols may result in Choose one answer. a. CDC investigating b. increased containment c. the appointment of a biosafety officer d. none of the above

increased containment

Question 12 Vehicleborne, vectorborne or airborne are all examples of: a. indirect mode of transmission b. direct mode of transmission c. hosts d. life cycle sequences

indirect mode of transmission

Question 32 Eradication of mosquitoes and ticks would have no effect on epidemic of: a. equine encephalitis b. infectious hepatitis c. yellow fever d. Rocky Mt Spotted Fever

infectious hepatitis

Question 59 As of 1975, the diseases which caused 2/3's of the deaths in the US included all but which of the following? a. cerebrovascular disease b. influenza c. cancer d. heart disease

influenza

Question 71 Which one of the following poses virtually no health threat in terms of inorganic mercury? a. inhalation b. absorption c. ingestion d. inoculation

ingestion

Question 76 The most common source of exposure to cadmium is through: a. absorption b. ingestion c. inhalation d. inoculation

ingestion

Question 27 The primary route of asbestos entering the human body is through: a. absorption b. ingestion c. inhalation d. drinking water

inhalation

Question 65 The major route of entry of inorganic mercury into humans is through: a. ingestion of contaminated fish b. inhalation of mercury vapors c. ingesting of contaminated vegetables d. inhalation of pesticide residues

inhalation of mercury vapors

Question 49 The major cause of lead poisoning of children is from: a. eating paint chips b. inhaling lead contaminated household dust c. ingesting lead-contaminated food d. putting dirty fingers into their mouths

inhaling lead contaminated household dust

Question 47 Marks: 1 The ______ of a sound wave is the energy transferred per unit time (sec) through a unit area normal to the direction of propagation. Choose one answer. a. sound pressure b. frequency c. intensity d. speed

intensity

Question 21 Marks: 1 Chemicals that have been used for pool disinfection include chlorine, chlorinated cyanurates, bromine and Choose one answer. a. ammonia b. soda ash c. sodium thiosulfate d. iodine

iodine

Question 77 Marks: 1 The most practical method for removing nitrates from water is Choose one answer. a. reverse osmosis b. ion exchange c. lime softening d. double reverse osmosis

ion exchange

Question 30 The molecular state of hypochlorous acid is the desired product from chlorination of pool waters. The product a. is increased with an upward movement of pH b. is decreased with a lower c. is ionized with a pH decrease d. is 62 percent molecular at pH of 7.2

is 62 percent molecular at pH of 7.2

Question 4 Marks: 1 A yellow to brownish black stain taken during the sediment test Choose one answer. a. is a simple visual indication of the amount of dirt and abnormal substances in the milk b. encourages straining of the milk at the farm rather than cleaning milking procedures c. is an indication of high sediment content from the cow's udder d. reveals unsanitary practices during the milking process

is a simple visual indication of the amount of dirt and abnormal substances in the milk

Question 68 Marks: 1 The environmental impact statement Choose one answer. a. is required by law b. is a written description of legislative proposals and actions affecting the quality of the human environment c. is not required to meet standards in H.B. Sec. 102 (2) C d. must be included in all proposed programs and concepts, plans, and construction projects

is a written description of legislative proposals and actions affecting the quality of the human environment

Question 31 Marks: 1 Escherichia coli 0157:H7 is a bacteria that currently Choose one answer. a. tends to cause disease in all who come in contact with it b. is difficult to test for c. is responsible for numerous diseases of the skin d. none of the above

is difficult to test for

Question 15 Marks: 1 Grease traps are installed for the purpose of minimizing grease in the sewer system. The trap Choose one answer. a. is not of proven value in many commercial applications b. requires yearly scheduled cleaning c. should be installed close to dishwashing machines d. should always discharge behind the septic tank

is not of proven value in many commercial applications

Question 57 Marks: 1 Human disease from aerosols of wastewater Choose one answer. a. is related primarily to wastewater treatment by the activated sludge, trickling filter, and spray irrigation processes b. has been demonstrated from pathogens recovered in aerosols from the spray irrigation of treated wastewater c. may be caused by very small numbers of organisms d. is a hazard even to those who have had subclinical infections, and thus should have been immunized

is related primarily to wastewater treatment by the activated sludge, trickling filter, and spray irrigation processes

Question 41 Sylvatic plaque: a. is the name given to an infection in wild rodents of Pasturella pestis b. is a serious disease of man originally described by Sylvania c. was so called because if a curse on the Gausi by Sylvaticus d. was a serious occupational disease of silversmiths during the 16th century

is the name given to an infection in wild rodents of Pasturella pestis

Question 78 Which one of the following statements about cadmium is false? a. it is used in production of pigments b. it helps the body metabolize calcium c. it may be found in tobacco plants d. it readily bioaccumulates

it helps the body metabolize calcium

Question 10 Pyrethrum is an important insecticide because: a. it is not toxic to humans b. it has a long lasting residual effect c. it has no odor d. it is more potent than parathion

it is not toxic to humans

Question 83 Why should sewage sludge not be used as a soil builder or fertilizer supplement for crops for forage if it has not been properly tested? a. it may make the vegetables taste bad b. it may result in higher levels of toxic metals in the vegetation and in the animals eating the vegetation c. the community may be offended at the smell d. all of the above

it may result in higher levels of toxic metals in the vegetation and in the animals eating the vegetation

Question 9 The reason that the ozone layer is so important is because it: a. provides an element needed for respiration of plants b. it protects life forms from solar ultraviolet radiation c. it helps in retaining a constant earth temperature d. it helps diffuse carbon dioxide in the atmosphere

it protects life forms from solar ultraviolet radiation

Question 3 In preparing a legal action, one of the first steps a sanitarian should do is to Choose one answer. a. obtain a warrant b. obtain a court order c. keep very accurate records d. check with other agencies

keep very accurate records

Question 61 The four biosafety containment levels consist of a combination of a. laboratory practices, safety equipment and facilities b. laboratory techniques, research protocols and safety equipment c. research protocols, safety training and laboratory facilities d. laboratory practices, safety training and research protocols

laboratory practices, safety equipment and facilities

Question 37 A major drawback facing compliance with the Asbestos Hazard Emergency Response Act is: a. lack of technology to deal with asbestos removal b. widespread use of asbestos prior to enactment of the Act c. lack of funding to comply with the provisions of the Act d. lack of willingness on the part of the public to comply

lack of funding to comply with the provisions of the Act

Question 9 The basic principles of disease control include all of the following except a. lag phase b. control disease source c. mode of transmission d. susceptibility

lag phase

Question 61 Bat-proofing should be done in the __ , when bats are hibernating in caves a. late fall through winter b. late winter through spring c. early spring only d. mid-summer through early fall

late fall through winter

Question 37 A solid waste manager is trying to reduce lead in the solid waste stream. What should be targeted in the municipal waste stream as a major contributor to the environment? a. fluorescent bulbs b. lead acid batteries c. household batteries d. rechargeable batteries

lead acid batteries

Question 35 The extent of risk of development of an asbestos-related disease is probably most associated with: a. age at which exposure first occurred b. level and duration of exposure c. personal history of cigarette smoking d. occupation of the individual

level and duration of exposure

Question 13 A major worry associated with prolonged, low-level PCB exposure is: a. general tiredness b. loss of appetite c. liver cancer d. reproductive problems

liver cancer

Question 21 Marks: 1 For a pure tone (single frequency) to be produced, there must be a one-to-one correspondence between Choose one answer. a. loudness and intensity b. frequency and intensity c. pitch and loudness d. pressure and pitch

loudness and intensity

Question 31 Which of the following conditions may minimize the problem of leachate? a. dilution as a result of high rainfall b. properly located landfills in areas of high rainfall c. low rainfall and high transpiration rate d. low transpiration rate and low rainfall

low rainfall and high transpiration rate

Question 30 The number 1 cause of asbestos-related mortality is: a. lung cancer b. asbestosis c. multiple meyloma d. gastrointestinal cancer

lung cancer

Question 31 Marks: 1 The Muerto Canyon virus causes disease of the ______ in humans. Choose one answer. a. lungs b. kidneys c. intestine d. brain

lungs

Question 22 Another name for epsom salt is: a. sodium sulfate b. calcium sulfate c. zinc sulfate d. magnesium sulfate

magnesium sulfate

Question 81 Of the following, the most likely to succumb to cadmium poisoning are: a. miners b. malnourished women c. factory workers d. fishermen

malnourished women

Question 46 Marks: 1 In the quality of life index, the economic environment includes all of the following except Choose one answer. a. income b. work satisfaction c. economic security d. material quality

material quality

Question 46 According to the Freedom of Information Act, all of the following information must be available to the public except: a. applications for federal licensing b. medical records of personnel c. decisions affecting agency policies d. records of routine inspections

medical records of personnel

Question 98 Which group of the following bacteria typically contains most of the pathogenic bacteria? a. mesoduric b. thermophilic c. mesophilic d. thermoduric

mesophilic

Question 31 Asbestos is the only known cause of: a. leukemia b. multiple myeloma c. mesothelioma d. chloracne

mesothelioma

Question 14 Another name for a mature or balanced lake is __ a. oligotropphic b. eutrophophic c. mesotrophic d. omegotrophic

mesotrophic

Question 38 Marks: 1 Microwaves are reflected by Choose one answer. a. metals b. plastic c. glass d. human tissues

metals

Question 2 Rocks such as serpentine, slate, soapstone and marble belong to which class: a. igneous b. sedimentary c. metamorphic d. limestone

metamorphic

Question 58 Marks: 1 ______ involves the chemistry, physics, and dynamics of the atmosphere and includes many direct effects of the atmosphere on the earth's surface, ocean, and life. Choose one answer. a. topography b. meteorology c. micrometeorology d. none of the above

meteorology

Question 20 Which one of the following is potentially the most important in terms of global warming? a. carbon dioxide b. nitrous oxide c. methane d. chlorofluorocarbons

methane

Question 12 Of the following, which is not ordinarily used as a rodenticide? a. ANTU b. methoxychlor c. sodium fluoracetate d. warfarin

methoxychlor

Question 51 Marks: 1 Due to political boundaries, the costs of implementing services for community functions are best handled by Choose one answer. a. local governments b. state governments c. metropolitan regions d. federal governments

metropolitan regions

Question 23 Perhaps the most often observed birth defect that is the result of fetal exposure to X-rays is: a. microcephaly b. genital abnormalities c. eye problems d. stunting of growth

microcephaly

Question 14 Which one of the following was not initially associated with PCBs? a. minimata disease b. yusho disease c. yu-cheng disease d. chlorance

minimata disease

Question 16 Marks: 1 A "chigger" is the larval stage of a type of Choose one answer. a. mite b. mosquito c. louse d. flea

mite

Question 43 To disinfect clear water using 5% household bleach, a. mix 6 to 8 drops of bleach and drink after setting 5 minutes b. mix 6 to 8 drops and let set for 10 minutes c. mix 1 tablespoon to 10 gallons and let set 30 minutes d. drink canned an bottled food and beverage materials even though they were contaminated externally

mix 1 tablespoon to 10 gallons and let set 30 minutes

Question 35 To disinfect a well, one should and pour directly into the well. a. mix one gallon of bleach in five gallons of water b. mix one quart of bleach in five gallons of water c. mix one quart of bleach in three gallons of water d. mix one pint of bleach in three gallons of water

mix one quart of bleach in five gallons of water

Question 33 To improve the accuracy of global warming predictions: a. better computer models need to generated b. more understanding of ocean dynamics is needed c. more knowledge of the carbon cycle is needed d. a better understanding of gas exchange is needed

more understanding of ocean dynamics is needed

Question 52 Hepatitis B vaccinations for employees that work in contamination risk jobs and areas a. must be offered at no cost b. must be made available to the employees at the employers cost c. are required of all such employees d. are not required due to the non-serious nature of the disease and its difficulty of spread or employee contraction

must be offered at no cost

Question 51 Broken glassware found in contamination risk areas or if suspected to have contained infectious material a. must be sprayed with a weak concentration of a carbolic acid and let sit for minimum of 5 minutes prior to picking up b. must be left in place no matter how long until the decontamination team arrives c. must be picked up using mechanical means d. all of the above

must be picked up using mechanical means

Question 23 Which one of the following seems to have the most impact on a child's reading skills? a. parental educational background b. noisy home environment c. child's grade in school d. number of children in the family

noisy home environment

Question 10 All of the following describe objectives used in environmental quality planning except Choose one answer. a. non-measurable b. realistically obtainable c. obtainable in a specified time period d. specifically measurable

non-measurable

Question 49 Contaminated needles must always be a. recapped after use b. cut to ensure that they are not used again c. washed in hot soapy water prior to reuse d. none of the above

none of the above

Question 50 Marks: 1 Which of the following is not a condition that encourages the growth of weeds? Choose one answer. a. soil abuse b. over cultivation c. deforestation d. none of the above

none of the above

Question 52 Radon cannot be reduced with which of the following devices a. humidifier b. electrostatic precipitators c. ionizers d. none of the above

none of the above

Question 11 An establishment known to have imminent health hazards is not closed by the inspecting regulatory authority. This example best fits the definition of a: a. malfeasance b. misfeasance c. nonfeasance d. controlling factor

nonfeasance

Question 46 Which one of the following has not been identified as a hazard associated with lead exposure? a. storing wine in lead crystal containers b. occasional use of antique or collectible dinnerware c. use of lead solder in the canning industry d. failure to wipe foil sealed wine bottles before uncorking

occasional use of antique or collectible dinnerware

Question 64 Marks: 1 A young lake is considered to be Choose one answer. a. eutrophic b. mesotrophic c. oligotrophic d. ohytotrophic

oligotrophic

Question 1 Which would not be classified as a sedimentary formation? a. limestone b. peat c. olivine d. loess

olivine

Question 85 Beef usually spoils first a. near the bone b. in the inner portions c. on the surface d. near the edges

on the surface

Question 57 Marks: 1 A primary pollutant is Choose one answer. a. one that is formed in the atmosphere as a result of reactions such as hydrolysis, oxidation, and photochemistry b. one that is found in the atmosphere due to natural reactions c. one that is found in the atmosphere in the same form as it exists d. none of the above

one that is found in the atmosphere in the same form as it exists

Question 38 Marks: 1 A clean bench should be considered for use Choose one answer. a. as an alternative for a biosafety cabinet b. as an alternative for a fume hood c. only when there is no possible risk to personnel d. when protecting the laboratory environment

only when there is no possible risk to personnel

Question 17 Marks: 1 High temperature incineration systems are most suitable to destroy Choose one answer. a. wastewater b. organic compounds c. domestic sewage d. none of the above

organic compounds

Question 19 The Greenhouse Effect is being enhanced by the increase of all the following gases in the atmosphere except: a. methane b. oxygen c. nitrous oxide d. carbon dioxide

oxygen

Question 32 Marks: 1 ______ can be formed as a result of the sun's action on nitrogen oxides and hydrocarbons Choose one answer. a. sulfur dioxide b. hydrogen sulfide c. chlorofluorocarbons d. ozone

ozone

Question 54 Marks: 1 Which of the following is non-toxic to aquatic organisms, a good viricide, and adds oxygen to treated wastewater effluents? Choose one answer. a. ozone b. calcium hypochlorine c. sulfur dioxide d. chlorine dioxide

ozone

Question 24 Marks: 1 Ozone disinfection has many advantages. Which of the following is NOT true? Choose one answer. a. ozone is non-toxic to aquatic organisms b. ozone can be a source of dissolved oxygen c. ozone is a good viricide d. ozone is approximately equal in cost to chlorine

ozone is approximately equal in cost to chlorine

Question 55 The dose-response relationship of a toxic substance depends on all of the following except the: a. Amount and concentration of the substance b. pH of the substance c. duration of exposure to the substance d. toxicity of the substance

pH of the substance

Question 48 Lead-based paint may be used for: a. exterior house paints b. painting toys c. painting bridges d. painting special furniture

painting bridges

Question 27 On the basis of weight, which of the following materials constitutes the largest component of domestic solid waste? a. metal b. paper c. plastics d. glass

paper

Question 51 Marks: 1 Which of the following is not commonly associated with the term frequency? Choose one answer. a. waves b. particles c. vibrations d. oscillations

particles

Question 44 Marks: 1 The ability of the soil to absorb and allow water and air to pass through is called Choose one answer. a. unloading b. infiltration c. permeability d. soil aeration

permeability

Question 3 What two factors determine the groundwater contamination potential from a septic tanks? a. size of tank and depth to groundwater b. contaminants in tank and soil characteristics c. permeability of septic tank materials and soil characteristics d. soil characteristics and depth to groundwater

permeability of septic tank materials and soil characteristics soil characteristics and depth to groundwater

Question 5 Marks: 1 Psittacosis/Ornithosis is spread by Choose one answer. a. bats b. shellfish c. rodents d. pigeons

pigeons

Question 54 Marks: 1 The quiescent settling of water such as would occur in a reservoir, lake or basin without the aid of chemicals is known as Choose one answer. a. plain sedimentation b. coagulation c. settling d. flocculation

plain sedimentation

Question 6 Marks: 1 Heating of air, gas, or gas mixture up to 9032 degrees F for the thermal destruction of hazardous wastes describes a process called Choose one answer. a. plasma technology b. rotary kiln incineration c. fuel blending d. all of the above

plasma technology

Question 64 Hay fever is correctly referred to as a. weedsidsis b. pollenosis c. asthma d. sinusitis

pollenosis

Question 16 How is the term contamination defined when used in connection with a communicable disease? a. infection of an individual or animal with pathogenic organisms b. presence of pathogenic agents on a surface, article or substance c. transfer of a vector, regardless of time or the nature of the host d. contact between two or more sources of infection

presence of pathogenic agents on a surface, article or substance

Question 39 Which of the following is not a type of hazardous waste incinerator? a. pressurized b. fluidized c. fixed hearth d. rotary kiln

pressurized

Question 26 BOD is a measure of the biodegradeable organic content of a water sample. It is necessary to dill the bottle completely full and not have any air bubbles in the sample in order to: a. insure that the water sample is completely aerobic b. insure accurate measurement of sample volume c. prevent dissolved oxygen from escaping from the water sample d. prevent additional oxygen from diffusing into the sample

prevent additional oxygen from diffusing into the sample

Question 23 Why are anit-coagulant type rodenticides coated with paraffin? a. prevents rodents from smelling poison b. slows down killing effect so rodents can die in nest c. prevent decomposition of poison by rain moisture d. increases toxicity of poison

prevent decomposition of poison by rain moisture

Question 23 Marks: 1 The major reason for the regulation of food establishments is to Choose one answer. a. prevent foodborne illnesses b. ensure restaurant safety c. reduce liability d. increase consumer confidence

prevent foodborne illnesses

Question 32 The principal purpose of a trap used in connection with a plumbing fixture is to: a. impede the flow of sewage through the fixture b. permit the circulation of clean air through the plumbing fixture c. prevent the entrance of sewer air & foul gases into the house through the fixture d. strain insoluble waste material from the liquid waste

prevent the entrance of sewer air & foul gases into the house through the fixture

Question 3 The causative agent Naegleria fowleri has been linked to which of the following diseases? a. bacterial meningitis b. primary amoebic meningoencephalitis c. cholera d. diptheria

primary amoebic meningoencephalitis

Question 9 Marks: 1 The protection of personnel and the immediate laboratory environment from exposure to infectious agents by good microbiological technique and safety equipment is called Choose one answer. a. primary containment b. secondary containment c. tertiary containment d. none of the above

primary containment

Question 38 In case of disasters, the speed with which action may be implemented is dependent upon a. prior plans for emergencies b. availability of manpower c. availability of resources d. the type of emergency

prior plans for emergencies

Question 17 Hazardous waste sites must be characterized __ general site entry to determine the hazards present at the site. a. after b. during c. prior to d. none of the above

prior to

Question 6 What is the purpose of using a forward sweeping motion when collecting water samples from a stream or lake? a. allows equal mixing of sample b. prohibits contamination from samples hands c. prohibits collection of trash in the water d. created a current that will collect viable contaminants for ID

prohibits contamination from samples hands

Question 84 What is the best assurance of satisfactory operation of a properly designed and constructed septic tank system? a. proper maintenance b. large dosages of bacteria c. one quart of lime down the line every month d. the use of numerous additives available

proper maintenance

Question 98 The NODAK system is designed to a. protect ground water b. decrease surface area c. allow evaporation of most liquids d. none of the above

protect ground water

Question 58 Marks: 1 General obligation bonds used for financing municipal capital improvement are repaid by Choose one answer. a. sales tax b. real property tax c. local industry special tax d. private investors with limited ownership

real property tax

Question 50 Protective equipment such as gloves for workers in contamination risk areas must be a. offered to the employee at the same cost as paid by the employer b. rewashed prior to use by other employees c. provided at no cost to the employee for work purposes d. all of the above

provided at no cost to the employee for work purposes

Question 69 __ is the thermochemical process for the conversion of complete organic solids in the absence of added oxygen, to water, combustible gases, tarry liquids and stable residue. a. composting b. incineration c. wet oxidation d. pyrolysis

pyrolysis

Question 7 Marks: 1 An ideal floor covering for a kitchen is Choose one answer. a. carpet b. linoleum c. quarry tile d. asphalt tile

quarry tile

Question 34 The US DOT emergency response guidebook can be used to a. determine compliance with the US DOT hazardous materials regulations b. create worker safety documents for specific chemicals c. quickly identify the specific or generic classification of hazardous materials during the initial response phase of an incident d. characterize hazardous waste for the purpose of disposal

quickly identify the specific or generic classification of hazardous materials during the initial response phase of an incident

Question 46 Marks: 1 Which of the following is not one of the four characteristics of hazardous wastes as defined by the Environmental Protection Agency? Choose one answer. a. radioactivity b. toxicity c. explosive d. all of the above

radioactivity

Question 2 Marks: 1 The addition of sodium bicarbonate is usually used to Choose one answer. a. raise the ambient water temperature b. lower the ambient water temperature c. raise the alkalinity d. lower the pH

raise the alkalinity

Question 16 Marks: 1 Oil that has had a physical and chemical impurities removed and that by itself or when blended with new oil or additives, is substantially equivalent or superior to new oil intended for the same purposes, is called Choose one answer. a. re-refined oil b. substandard oil c. terrestrial oil d. subsurface oil

re-refined oil

Question 62 The best preventive measure for poison ivy, poison oak, and poison sumac is a. recognition of the plant and its avoidance b. wearing clothing that appropriately covers the body c. applying an effective weed killer d. none of the above

recognition of the plant and its avoidance

Question 56 An example of a single dose rodenticide is a. red squill b. warfarin c. malathion d. chlordane

red squill

Question 27 Samples for BOD analysis should be: a. refrigerated and analyzed within hours b. preserved with mercuric chloride and analyzed anytime thereafter c. frozen and analyzed within 96 hours d. maintained at room temperature and analyzed as soon as possible

refrigerated and analyzed within hours

Question 23 Marks: 1 Some studies indicate that swimmers have a higher over-all illness rate than do non-swimmers Choose one answer. a. regardless of bathing water quality b. due to poor regulatory practice c. if they are over 50 years of age d. if they swim in pools

regardless of bathing water quality

Question 11 Marks: 1 Adequate highways, land-use controls, park and recreation facilities, water, sewers, solid waste disposal, and other services necessary for proper community functions are usually designed within the context of a ______ plan. Choose one answer. a. national b. regional c. metropolitan d. county

regional

Question 54 Marks: 1 The Toxic Substances Control Act (TSCA) of 1976 Choose one answer. a. mandates government (Federal and State) control of hazardous wastes from their point of generation to their point of ultimate disposal b. regulates the production and use of chemical substances that may present an unreasonable risk of injury to health or environment c. requires that all toxic substances transported from one point to another by air, land, or sea be properly documented through an approved manifest system d. regulates all hazardous wastes generated at health care facilities through Federal and State governments

regulates the production and use of chemical substances that may present an unreasonable risk of injury to health or environment

Question 3 Which of the following duties of state and local health agencies is intended to ensure that the public's health and welfare are protected? a. community-intensive planning b. statutory administrative action c. regulatory responsibilities d. plan implementation

regulatory responsibilities

Question 60 One of the most important aspects involved in restoring a child who has been exposed to lead to good health is: a. repeated treatment for the condition b. initiation of intensified schooling for the child c. removal of the child from the source of exposure d. placing the child in the care of a competent physician

removal of the child from the source of exposure

Question 10 Marks: 1 A storm sewer is used to Choose one answer. a. remove rain other standing surface water b. remove sewage and storm water c. remove household water waste and gutter drain water d. remove non-toxic, non-hazardous wastewater

remove rain other standing surface water

Question 37 What method is most effective to eliminate pigeons? a. remove sources of food, water and harborage b. use grounded electric wires c. use professional sharpshooters d. set traps in roosts

remove sources of food, water and harborage

Question 13 An employer is held liable for the torts of its employee committed within the scope of their employment. This is referred to as: a. respondeat superior b. parens patriae c. substituted judgment d. corporate privilege

respondeat superior

Question 79 Marks: 1 When direct consumption of shellfish might be hazardous due to radionuclide or industrial wastes pollution; the median coliform MPN of the water does not exceed 700 per 100 ml; and not more than 10 percent of samples exceed MPN of 2300 per 100 ml, an area is designated Choose one answer. a. prohibited b. provisionally restricted c. restricted d. unprohibited

restricted

Question 40 When a business authority refuses consent to an inspection, the most appropriate action is to: a. close down the business until it can be inspected b. return later with an inspection warrant obtained through an appropriate court c. request the objector to state in writing the reason for refusal d. ignore the objection and proceed with the inspection

return later with an inspection warrant obtained through an appropriate court

Question 37 Marks: 1 Which of the following types of materials are known to reflect sound? Choose one answer. a. rubber tiles b. heavy drapes c. carpets with felt pads d. rugs

rubber tiles

Question 20 Marks: 1 It is essential that all public pools Choose one answer. a. require footbaths b. require pre-showering of patrons c. run the recirculation and disinfection equipment 24 hours per day d. shovel in at least 4 lbs of calcium hypochlorite per 10,000 gallon per 4-hour period

run the recirculation and disinfection equipment 24 hours per day

Question 2 The process whereby water that has fallen on land finds its way back to the oceans is called: a. Evaporation b. Transpiration c. run-off d. transport

run-off

Question 17 Marks: 1 Minimum APHA-PHS standards for housing include Choose one answer. a. running water piped in b. 50 square feet of parking per unit c. an air conditioner in each unit in tropical areas d. a dehumidifier in each unit

running water piped in

Question 33 Which one of the following statements is false? a. chronic exposure to asbestos is likely to produce disease b. safe levels for asbestos exposure have been established c. exposure to asbestos has been linked to lung cancer d. the severity of asbestosis is also linked to cigarette smoking

safe levels for asbestos exposure have been established

Question 60 The term containment is used in describing a. control of infectious wastes in the laboratory b. a biosafety cabinet c. safe methods for managing infectious agents in the laboratory d. facilities designed for research on recombinant DNA

safe methods for managing infectious agents in the laboratory

Question 28 Marks: 1 The correct order of sequence for hand washing dishes is Choose one answer. a. scrape, wash, sanitize, rinse, air dry b. scrape, wash, rinse, sanitize, air dry c. scrape, wash, rinse, air dry d. scrape, wash, sanitize, rinse, towel dry

scrape, wash, rinse, sanitize, air dry

Question 17 Loss of hearing to the extent that low frequency sounds are distorted or can't be heard is considered: a. sensorineural loss b. temporary threshold shift c. conductive loss d. noise induced hearing loss

sensorineural loss

Question 48 Marks: 1 The best way to control deep fires in a sanitary landfill is to Choose one answer. a. inject water under the cover material at strategic points throughout the landfill b. separate the burning refuse and dig a fire brake around the burning refuse c. smother the burning area with landfill liner made of polymeric or asphaltic materials d. let the area burn itself out

separate the burning refuse and dig a fire brake around the burning refuse

Question 96 Listeriosis is a a. skin irritation caused by contact with cold products b. serious infection caused by food contaminated with Listeria monocytogenes c. disease caused by exposure to lysolic agents d. disease that attacks people in their early 20s

serious infection caused by food contaminated with Listeria monocytogenes

Question 22 Swimming pool water clarity is measured in terms of NTU or Nephelotnetric Turbidity Units. It is recommended that a level of 0.5 NTU a. shall be maintained b. shall not be exceeded c. is the minimum level d. is the maximum level

shall not be exceeded

Question 42 Swimming pool water clarity is measured in terms of NTU or Nephelometric Turbidity Units. It is recommend a level of 0.5 NTU a. shall maintained b. shall not be exceeded c. is the minimum level d. none of the above

shall not be exceeded

Question 32 Marks: 1 The reliability and interpretation of the soil percolation test are affected by all of the following except Choose one answer. a. evaluation of site investigation, soil profile, and suitability b. shape of the test hole c. size or diameter of the test hole d. saturation of soil

shape of the test hole

Question 1 Marks: 1 The type of filter that is recommended for use at small communities and rural places is the Choose one answer. a. rapid sand filter b. pressure filter c. slow sand filter d. diatomaceous earth filter

slow sand filter

Question 78 Marks: 1 Hydropneumatic or pressure-tank water systems are suitable for Choose one answer. a. providing sufficient water to meet peak demands for domestic, commercial, and industrial purposes b. small communities, housing developments, private homes and estates, camps, food service operations, and hotels c. water storage requirements d. helping to control watershed runoff

small communities, housing developments, private homes and estates, camps, food service operations, and hotels

Question 66 Garbage reduction melts out fats that are used in manufacturing of a. soaps, glycerines and cosmetics b. glue and cement c. grouting and calk d. fertilizer and cattle feed

soaps, glycerines and cosmetics

Question 62 If hard water is softened by the ion exchange method, which one of the following will increase? a. Dissolved oxygen b. Iron c. P1-1 d. sodium

sodium

Question 11 Marks: 1 To raise the pH, add Choose one answer. a. chlorine b. muriatic acid c. sodium carbonate d. sulfuric acid

sodium carbonate

Question 11 Which raises the pH of pool water? a. chlorine b. alum c. sodium carbonate (soda ash) d. all of the above

sodium carbonate (soda ash)

Question 5 When collecting bacteriological samples that have been chlorinated, what chemical is used to dechlorinate the water? a. sodium sulfate b. sodium thiosulfate c. sodium bisulfate d. sodium bisulfite

sodium thiosulfate

Question 15 What conditions would result in the worst case of pipe damage due to corrosion? a. hard water, low alkalinity, presence of oxygen b. soft water, low alkalinity, presence of oxygen c. hard water, high acidity, presence of oxygen d. soft water, low acidity, presence of oxygen

soft water, low alkalinity, presence of oxygen

Question 9 A rodent sign which would best indicate a current infestation with a number of rats would be: a. extensive gnawed wood b. rat poisons in corners of restaurant kitchens c. presence of burrows d. soft, dark rat dropping ranging in size from 3/8 inch to 3/4 inch

soft, dark rat dropping ranging in size from 3/8 inch to 3/4 inch

Question 50 Marks: 1 The suitability of soil for the subsurface disposal of sewage and other wastewater can be determined by a study of soil characteristics and the Choose one answer. a. soil survey b. soil percolation test c. rate of sewage flow d. amount of rainfall

soil percolation test

Question 88 A measure of the relativity constant rate at which clear water, maintained at a relatively constant depth, will seep out of a standard size test hole that has been previously saturated is the a. hydraulic conductivity b. soil permeability test c. soil percolation test d. Baird-Parker saturation test

soil percolation test

Question 9 Marks: 1 By definition under RCRA hazardous wastes are ______ wastes. Choose one answer. a. solid b. natural c. gray d. none of the above

solid

Question 20 Marks: 1 Revenue bonds are usually repaid by Choose one answer. a. state taxes b. interest from foreign loans c. specific sources of revenue (such as water charges) d. credit

specific sources of revenue (such as water charges)

Question 42 Which of the following sampling devices is best for collecting undisturbed soil samples a. auger b. Shelby tube c. split spoon d. veihmeyer rod

split spoon

Question 11 Which method is most common method of applying wastewater to land? a. ridge and furrow irrigation b. spray irrigation c. border strip irrigation d. overland flow irrigation

spray irrigation

Question 11 Marks: 1 What is the most common method of applying wastewater to land? Choose one answer. a. waste stabilization pond b. land over-land flow c. spray irrigation d. wetland treatment

spray irrigation

Question 51 Marks: 1 A mold control program should include all of the following factors except Choose one answer. a. spraying with a 5000 mg/1 sodium hypochlorite solution b. spraying with a 1000 mg/1 quaternary ammonium compound c. re-spraying the entire section with 400 to 500 mg/1 of quaternary solution every week or two d. cleaning the affected area with an alkaline detergent

spraying with a 1000 mg/1 quaternary ammonium compound

Question 20 Marks: 1 The peak seasons for rats to breed in temperate zones are Choose one answer. a. spring and fall b. summer and winter c. winter and spring d. fall and summer

spring and fall

Question 45 One advantage of using cyanuric acid additive is that it a. allows easier measurement of chlorine b. prevents pH deterioration c. stabilizes residual chlorine d. requires less soda ash as an additive to the pool

stabilizes residual chlorine

Question 22 What is the best method for eliminating rats? a. kill with poisons b. remove rat harborage c. starve the rats by removing food and water sources d. trap rats and destroy them

starve the rats by removing food and water sources

Question 42 In planning and implementing an environmental health investigation it is necessary to follow explicit procedure in an ordinance because: a. this is the most efficient process b. such action is required by due process c. computer data processing techniques are enhanced d. such action is required by supervisory staff

such action is required by due process

Question 31 Marks: 1 What type of air pollution causes bleaching of leaves in plants? Choose one answer. a. PAN b. sulfur dioxide c. industries processing hazardous wastes d. high motor vehicle traffic

sulfur dioxide

Question 66 Marks: 1 Impurities in combustible hydrocarbons (coal and oil) combine with oxygen to produce ______ when burned. Choose one answer. a. nitrogen oxide b. sulfur dioxide c. nitrogen dioxide d. carbon monoxide

sulfur dioxide

Question 8 Marks: 1 When two pollutants are combined, the effects are greater than the sum of the individual effects. This is called Choose one answer. a. commensalism b. synergism c. magnification d. multiplication

synergism

Question 30 The one of the following that is not ordinarily transmitted by an insect: a. malaria b. tetanus c. typhus fever d. yellow fever

tetanus

Question 48 Wearing contact lenses in an area that has the potential to expose workers to body fluids requires a. a special cleaning, disinfection procedures if cleaned in the work area b. that they may not be cleaned in the work area c. no special process d. none of the above

that they may not be cleaned in the work area

Question 55 Marks: 1 The first Federal standards for occupational exposure to noise were issued by Choose one answer. a. the Department of Transportation b. the Federal Aviation Administration c. the Department of Housing and Urban Development d. the Department of Labor

the Department of Labor

Question 28 Marks: 1 The agency that developed guidelines to assist urban areas and cities assess the environmental impact of housing and urban development was Choose one answer. a. the U.S. Environmental Protection Agency b. the U.S. Department of Health, Education, and Welfare c. the U.S. Department of Housing and Construction d. the U.S. Department of Housing and Urban Development

the U.S. Department of Housing and Urban Development

Question 15 The increase in the concentration of carbon dioxide in the earth's atmosphere might be occurring because of: a. the increase in UV light reaching the earth's surface b. the decrease in the ozone layer of the earth c. the increased consumption of fossil fuels d. the decrease in the water vapor content of the atmosphere

the increased consumption of fossil fuels

Question 35 Marks: 1 Herpesvirus simiae (B-virus) is naturally occurring in certain species of monkeys namely the macaque. The highest risk of humans acquiring this virus is from Choose one answer. a. primary cell cultures b. the bite of a macaque c. aerosol exposure to saliva and urine d. mouth pipetting in the laboratory

the bite of a macaque

Question 23 What is a major issue that is confronting public health professionals responsible for setting exposure limits to TCCD? a. multiple chronic effects have been observed at low level exposure b. the chemical seldom appears alone c. irritating effects have been shown at low levels of exposure d. long-term exposure seems to produce degenerative diseases

the chemical seldom appears alone

Question 67 Marks: 1 The speed with which sound travels through a particular medium is dependent on Choose one answer. a. the compressibility of the medium b. the density of the medium c. the compressibility and density of the medium d. none of the above

the compressibility and density of the medium

Question 29 Marks: 1 What is desalination? Choose one answer. a. the detection of detergents in water by laboratory examination b. the process of removing undesirable tastes and odors from domestic water supplies c. one of the classifications for springs d. the conversion of seawater or brackish water to fresh water

the conversion of seawater or brackish water to fresh water

Question 13 Marks: 1 What is the smallest practical planning unit involved in regional planning? Choose one answer. a. the individual b. the village c. the county d. the city

the county

Question 42 The establishment number can be found on a pesticide container and it indicates: a. the inspector for EPA who approved the pesticide b. the factory that produced the pesticide c. location where the product was purchased d. none of the above

the factory that produced the pesticide

Question 41 Which one of the following is not a requirement for complete removal and disposal of asbestos? a. the material must be kept wet during the process b. the material may be transported in an open vehicle c. the material must be labeled d. the material must be buried separate from other wastes

the material may be transported in an open vehicle

Question 19 Marks: 1 Turbulence is the wind characteristic that is Choose one answer. a. most predictable b. the most effective mechanism for the dispersion or dilution of a cloud or plume of pollutants c. responsible for generating cyclonic pollutants d. responsible for the agitation of otherwise harmless ions

the most effective mechanism for the dispersion or dilution of a cloud or plume of pollutants

Question 5 Marks: 1 The formula (Volume of Pool / Pump Flow Rate (GPM) x 60 min) = turnover rate, will tell us . Choose one answer. a. the number of hours it takes for the entire contents of the pool to pass through the filters b. the efficiency rate of the pumps c. the gallons per minute flow rate d. the chlorine demand per day

the number of hours it takes for the entire contents of the pool to pass through the filters

Question 4 Which of the following statements is true regarding an inspection efficiency rating? Choose one answer. a. the average amount of time required for each inspection must be determined by the administrator of the sanitation program b. the quality of the inspections should be emphasized over quantity c. the numerical rating obtained per year is less important as the relative change from year to year d. it is not possible to receive a rating over 100 percent

the numerical rating obtained per year is less important as the relative change from year to year

Question 4 What is epidemic? a. the constant presence of a disease within a community or region b. the presence of an infectious agent on a body surface c. the presence of infection in a host without clear, recognizable clinic symptoms d. the occurrence in a community or region of cases of an illness clearly in excess of expectancy

the occurrence in a community or region of cases of an illness clearly in excess of expectancy

Question 35 Marks: 1 Sewage treatment plants should be designed for Choose one answer. a. the population at the present time b. a per capita flow of not less than 100 gpd plus institutional wastes and all industrial wastes c. the population at least 10 years in the future d. a per capita flow of 100 gpd, plus institutional wastes and all industrial wastes

the population at least 10 years in the future

Question 18 Marks: 1 The terms "goals" and "objectives" are sometimes used interchangeably; however, objectives should be considered as Choose one answer. a. a general direction b. the final purpose or aim c. the idea which is always realized d. the realistically attainable ends

the realistically attainable ends

Question 40 Marks: 1 When considering water storage requirements, which of the following is not considered a recommended practice? Choose one answer. a. the water storage should equal not less than half of the daily consumption b. the retention time for the stored water should not be over 8 hours c. at least half of the stored water should be in elevated tanks d. capacity should equal the maximum daily usage plus fire requirements

the retention time for the stored water should not be over 8 hours

Question 73 Marks: 1 Planning and zoning regulations are based on Choose one answer. a. the rights of the government to dictate and control the uses of land for the purpose of development b. the need to expand the land for development c. the rights of the government to exercise its police power to control the private use of land for public benefit d. the development for growth and development of a region or area

the rights of the government to exercise its police power to control the private use of land for public benefit

Question 39 Marks: 1 Isotopes of the same element have Choose one answer. a. the same mass number but different atomic numbers b. the same atomic number but different mass numbers c. different atomic and mass numbers d. the same atomic and mass numbers

the same atomic number but different mass numbers

Question 2 Field observations are not always reported in total because Choose one answer. a. the reported forms are usually inadequate b. the significance of the data is not understood c. the field staff are instructed to limit observations d. the supervisor may insist on reinspection

the significance of the data is not understood

Question 34 Perhaps the most important determinant of the cancer-causing potential of asbestos is: a. the type of asbestos mineral to which one is exposed b. the physical properties of asbestos c. the chemical properties of asbestos d. the size of the asbestos fibers to which one is exposed

the size of the asbestos fibers to which one is exposed

Question 50 Marks: 1 The amount of heat required to lower one pound of a product one degree Fahrenheit is Choose one answer. a. exothermal extraction b. the specific heat c. the coolant factor d. important to know

the specific heat

Question 34 Hazardous wastes should not be placed in an ordinary sanitary landfill because: a. the wastes could contaminate the surrounding air, land or soil b. people don't like to see these wastes in the same pile as fill c. animals may be harmed by or disseminate the wastes d. people may pilfer wastes and be harmed by them

the wastes could contaminate the surrounding air, land or soil

Question 97 Which of the following is true regarding the use of septic-tank cleaners? a. additives have been shown to be cost-effective alternatives to annual cleaning b. their use is not advised c. there is no evidence that the chemicals used eventually reach groundwater d. the greasing compounds used have proven to be completely safe

their use is not advised

Question 15 Which one of the following statements is true? a. dibenzofurans have been associated with babies being born with dark skin discoloration b. there is no definitive evidence that links PCBs with cancer and other chronic health problems in humans c. PCBs concentration in Lake Michigan has had a major effect on the automobile manufacturing industry d. a major effect of PCBs is its ability to accumulate in lean body tissues

there is no definitive evidence that links PCBs with cancer and other chronic health problems in humans

Question 18 Why are some foods classified as time/temperature control for safety? a. they have a pH below 4.2 b. they have a water activity below 0.85 c. they support rapid growth of pathogenic microorganisms d. they require rapid and thorough cooking

they support rapid growth of pathogenic microorganisms

Question 2 Marks: 1 In emergencies, small quantities of water can be disinfected by boiling or using Choose one answer. a. aluminum salts b. tincture of iodine c. salt tablets d. direct exposure to sunlight for 22 hours

tincture of iodine

Question 29 Marks: 1 As milk leaves the cow, it is approximately 96 degrees F to 100 degrees F. Prechilling of the milk helps: Choose one answer. a. to ensure rapid bulk cooling within the refrigerated bulk tank to the desired temperature of less than 40 degrees F b. to locate toxic chemicals which precipitate upon cooling before they enter the bulk tank c. to detect infected or feverish heifers since cooling sensor readily spot overheated milk d. to mellow the flavor of the final product

to ensure rapid bulk cooling within the refrigerated bulk tank to the desired temperature of less than 40 degrees F

Question 15 Marks: 1 The pool must be designed Choose one answer. a. to fit the expected numbers of swimmers b. with oversized filters to meet unexpected peak demands c. with oversized pumps to meet peak demands d. with a variety of filter types to provide filtering options for the operator

to fit the expected numbers of swimmers

Question 90 The most effective method discovered for running a percolation test is a. to make tests in holes that have been filled with water overnight b. to make at least 4 tests for the average area being tested c. to make 12 tests where the soil is relatively uniform d. to take a reading every 5 minutes

to make tests in holes that have been filled with water overnight

Question 25 Marks: 1 In what part of the earth's atmosphere are photochemical oxidants produced? Choose one answer. a. lithosphere b. stratosphere c. troposphere d. hydrosphere

troposphere

Question 3 After a landfill is closed, how much soil should be placed on top of the site? a. two feet b. six inches c. four feet d. as much soil in available

two feet

Question 45 Historically in the US, most of the impetus for adequate water treatment came from the need to control: a. Infectious hepatitis b. TB c. Malaria d. typhoid

typhoid

Question 6 There is no need for vaccination after flooding and other natural disasters, although it is frequently cause for public concern. a. typhoid b. measles c. AIDS d. tick fever

typhoid

Marks for this submission: 0/1. Question 69 Marks: 1 Outbreaks of ______ traced to contaminated shellfish between 1900 and 1925 led to the PHS Certification of dealers involved in interstate shipment. Choose one answer. a. cholera b. gastroenteritis c. typhoid fever d. dysentery

typhoid fever

Question 4 Marks: 1 Which of the following is not recommended for a refuse storage area? Choose one answer. a. a drained concrete floor b. ample natural or artificial light and ventilation c. temperature kept below 50 degrees F d. uncovered base

uncovered base

Question 62 Which one of the following, given present conditions, would probably produce the best results in terms of alleviating health damage as a result of childhood exposure to lead? a. soil removal and replacement b. interior housepaint removal c. universal lead screening d. planting foundation shrubs around homes

universal lead screening

Question 35 Marks: 1 The basic principles of disease control include all of the following except Choose one answer. a. use of antibiotics b. control of disease source c. mode of transmission d. susceptibility

use of antibiotics

Question 40 The ban of chlorofluorocarbons was not targeted at those companies that: a. use the gas b. produce the gas c. export the gas d. import the gas

use the gas

Question 81 Final disposal of sludge may include all of the following except a. composting b. sanitary landfill c. land application d. vegetable dumping

vegetable dumping

Question 36 Infectious Hepatitis A (HAV) is a disease caused by: a. Bacteria b. Protozoa c. Rickettsia d. virus

virus

Question 14 HAZWOPER requirements apply to a. voluntary clean-ups at uncontrolled hazardous waste sites b. routine sanitary sewer operations c. small quantity generators of hazardous waste d. water treatment plant operators

voluntary clean-ups at uncontrolled hazardous waste sites

Question 43 Marks: 1 The field distribution piping should be surrounded with ______ and at least 2 inches deep under the pipe. Choose one answer. a. washed gravel, 3/4 inches to 2 1/2 inches b. broken limestone, 1 inches to 2 inches c. fine marble chips d. a mixture of sand and gravel

washed gravel, 3/4 inches to 2 1/2 inches

Question 64 Marks: 1 A well casing should be equipped with a vent and installed Choose one answer. a. with a sampling tap b. in a pit to prevent freezing c. with a turbine type pump d. with concrete used as grout

with concrete used as grout