Exam (elaborations) NEHA REHS/RS (REHS) REHS Examination Review Work Exams (3 Latest 2023 Answered sets)

REHS_Big_Practice_Exams 1,2&3 Q&A Updated Spring 23/24. REHS REVIEW BIG PRACTICE EXAM 1: 1. The most important factors in the xmsn of waterborne disease is: A) indirect contact and virulence B) dosage and virulence C) direct contact and dosage D) fomite and pathogen 2. In many jurisdictions, what needs to be issued before a newly constructed building, structure, or business can be opened, used, or occupied? a. Eminent domain b. Deed to the property c. Certificate of use or occupancy d. Writ of habeas corpus to owner 3. Treated municipal wastewater may be used for: a. Groundwater recharge b. Laundry purposes c. Fish farming d. Watering lawns 4. Which of the following soil color characteristics reflect OPTIMUM conditions for subsurface disposal and treatment of domestic sewage? a. Yellow, brown, or red b. Mottled brown or red c. Blue or grayish d. Speckle granite 5. Chemical poisoning would be suspected within an onset period of a. Less than an hour b. One to seven hours c. 8-14 hrs d. 14 hours 6. a sample bottle used for collection of chlorinated water samples for bacteriologic examination should contain a. sodium bicarbonate b. sodum hypochlorite c. sodium thiosulfate d. sodium carbonate 7. The greatest impact in the prevention of foodborne illness is achieved through routine a. Medical exams b. Regulatory inspections c. Training and hygiene d. Sampling and analysis of food 8. To assure steam autoclave processing, which spore strip is most appropriate? a. Bacillus stearothermophilus@ 106 9. Which soil conditions is BEST suited for sewage TRx? a. Soil with fast percolation b. Soil with very slow percolation rate c. Saturated soil with a moderate percolation d. Unsaturated soil with a moderate percolation rate 10. Serious child safety hazard to 1-4 year olds in private housing are: a. Drowning us constitutional amendment prohibits the unwarranted search and seizure of private property? a. 4th Amendment 12.All of the following adverse health effects can occir through the use of indoor tanning equip. Which is least likely? a. Dermatitis b. Erythema c. Skin cancer d. Photo-aging 13.A water treatment plant shoul have all fo the following except: a. A qualiefied chemist b. EPA certified plant manager c. Certified operator d. Well-equipped lab 14. All of the following are required by the OSHA respiratory protection program specific to PPE except: a. assessment of inhalation hazards b. regular physical exams c. engineering or work practice controls d. fit-testing of respirators 15. Which of the following is a botanical pesticide with quick “insect knockdown” capacity? a. Pyrethrum b. Dursban c. Malathion d. Carbaryl 16. A pool has a volume of 73450 gallons and a filter flow rate of 156 gallons/minute. What is the turnover rate of the circulation system? a. 7.75 hours b. 7.85 hours c. 7.95 hours d. 8.05 hrs term describes the restriction or the prevention of movement of goods in commerce for the protection of the public? a. Condemnation b. Abatement c. Search d. Embargo 18. A family at a commuity housing project has the following Sx: headache, weakness, nausea, dizziness, dim vision, red skin, mucous, nailbed pain. What would MOST LIKELY be the cause? a. O2 deficiency b. Symptomatic O2 deficiency c. Carbon monoxide poisoning d. Carbon dioxide overexposure 19. The number of toilets per gender at mass gathering areas should be 1 toilet and 1 lavatory per________ people? a. 50 b. 75 c. 100 d. 150 20. psttacosis prevention in child day care centers would require not having which of the following pets? a. Turtle b. Ferret c. Parrot d. Cat 21.In conducting inspections of institutions, sanitarians should be aware of the threats of which of the following deseases assoc with direct exp to blood and bdily fluids? a. HIV and Hep A 22.What’s an inspectors primary concern when humidifiers are being used in a nursery? a. Increse in moisture int eh air provides pportuniteis for bacterial growth in the room b. Higher moisture level can cause skin rashes on the scapsp of babies, resulting in infections c. Humidifier is a bacterial breeding hazard requiring routine disinfection to prevent growth of organisms on the internal components d. The presence of a humidifier substantially increase potential for electrical hazard. 23. Hazardous substances have been released into the groundwater in concentrations exceeding maximum limits. According to the RCRA act, which one MUST an owner or operator conduct? a. Corrective action by removing the contaminants or by treating them in place b. Corrective action by reducing the contaminant level c. Monitoring at known and suspected points of human exposure d. Monitoring at the compliance point 24. What device shuts off electrical power to prevent shock in aquatic environments? a. 10 guage shielded copper wire b. cross-voltage eliminator c. 20-ambreaker d. GFCI (Ground Fault Circuit Interuptor) 25. Of the health determinants, which is the easiest to control? a. Lifestyle b. Environment c. Medical factors d. Biological factors 26. Laboratory analyss of a potato salad revealed the presence of a coagulasepositive Staphylococcus. The cause was most likely: a. human infectious contamination b. fecal contamination c. soil contamination d. water contamination 27.All of the following chemicals are approved for anitizing food contact surfaces except: a. Sodium hypochlorite b. Phenol c. Iodine d. Quarternary ammonium compounds 28.The principal reason for conducting a bacteriological analysis of water is to determine the: a. Potability of water b. Total number of bacteria present c. Degree of sterility of the water d. Types of disease-producing organisms present 29. All of the following methods are allowed in the national guidelines for industrial waste disposal EXCEPT: a. reclamation b. separation c. dilution d. incineration entation in the water treatment process is described BEST as the: a. formation of flocculent particles in a liquid by adding chemicals b. dissolving of certain materials in order to destroy pathogenic bacteria and other harmful organisms c. settling out comparatively heavy suspended materials in water because of gravity d. removal of suspended material from water as it passes through beds of porous material. 31.A non-public facility has denied an inspector entry for inspection. What can be done f there’s no immediate known threat to public health? a. Inspection can only be forced by issued search warrant, inspection warrant. b. Can be undertaken without permissin provided two witnesses are present c. Can be undertaken after formal notice has been issued to the managemnt d. Inspector may enter after contacting the police and an immediate supervisor 32. A plumbing device designed to provide a water seal b/w the inside of the home and the sewer is called a: a. P-trap 33.Boiled water can be used to clean food contact surfaces, for food preparation, or as drinking water providing it is free of: a. Bacterial contamination b. Viral contamination c. Particulate contamination d. Chemical contamination 34. A duty or obligation to enforce the law by a public official has been peformed in a wrongful manner. The official knew that it was an unauthorized act. legally this is known as : a. disfeasane b. malfeasance c. misfeasance d. nonfeasance 35. In making an application for a search warrant, which of the following elements is NOT specifically required b the US constitution? a. Probably cause b. Witness testimony c. Oath of affirmation d. Search area description 36. Which of the following is NOT a fundamental need that housing should provide? a. Psychological needs b. Protecton against accidents c. Protection from the elements d. Protection from causative disease agents 37.Components of a health department’s emergency response plan should include all fo the following except: a. Medical surge b. Mass prophylaxis c. Mass-care shelters d. First response on explosions/chemical incidents 38.What is the common vector for Rocky Mountain Spotted Fever in the eastern united states a. Dog tick b. Rat tick c. Black tick d. Spotted tick 39. An evaluation of a noise complaint is being conducted using a sound level meter. What weighting network should the inspector use to determine compliance with applicable standards? a. A b. B c. C d. D 40. What is the most likely reason for eye irritation and strong chlorine odor complaints by swimmers? a. The pH is below 7.0 b. Chloramines are present in excess of 0.2 ppm c. Hypochlorous acid is present in excess of 2.0 ppm d. Total dissolved solids are present in excess of 2000ppm 41. The definition of maximum permissible dose (MPD) is the maximum dose of radiation a. that keeps the risk minimal, but within acceptable limits b. delivered by an x-ray system for examination c. numerically equal to 5X the age of the worker d. expected from a dental xray machine 42. What are the three main respiratory protective equipment categories? a. Air purifier, supplied air, and gas mask b. Self contained, supplied air, and hepa filter c. Air purifiers, self-contained breathing apparatus, and suppliedair respirators d. Gas mask, filter cartridge, and air purifiers 43. What is the minimal recommended turnover rate for spas and hot tubs? a. 30 minutes b. 90 minutes c. 180 minutes d. 240 minutes 44.The MINIMUM temp for hot water in a hospital laundry should be a. 143F/62C b. 160F/71C c. 170F/77C d. 180F/82C 45.Myiasis is a DZ whose obvious symptoms include a. Maggots in baby’s nose b. Fever of 103F in toddler c. Redblothces on baby’s appendages d. Yellowing of toddler’s eyes 46. The most common bacterial disease threats ina hospital include all of the follwing except a. E. coli b. Staph aureus c. Pseudomonas aeruginosa d. Listeria monocytogenes 47.What must employers do if they require employees to work with HAZMAT? a. Label HAZMAT transferred from large shipping containers to portable containers 48.Which is not a criteria of crowding in residential units? a. Area crowding: less than 500 feet cubed per person per room b. Area crowding : less than 40 feet squared per person of sleeping area c. Room crowding: over 1.5 persons per room d. Room crowding: number of occupants equals or exceeds 2X number of sleeping rooms plus 2 49. What’s the primary advantage or personal versus area sampling? a. Provides a more accurtate indication of individual exposure during an entire work shift 50. plastic containers for shucked shellfish shall have specific information regarding the source of the shellfish as required by the a. EP national listing of shellfish advsories b. NSF international food standard c. NSSP Guide for the control of molluscan shellfish d. FDA Food Safety Inspection Service Container Standards 51.Product specifications of a food’s purity includes all of the following EXCEPT a. Grade b. Weight c. Quality d. Content 52.For land use planning, an assessment conducted to determine compliance with regulatory requirements is called a a. Site plan b. Environmental audit c. Environmental impact analysis d. Environ property assessment 53. What type of waterborne microbial agent causes giardiasis? a. Bacteria b. Virus c. Protozoan d. Spirochete 54. Raw shell eggs shall be received in refrigerated equipment that maintains an ambient air temp of a. 45F b. 50F c. 55F d. 60F 55. What contaminant in potable water supplies has been assoc with methemoglobinemia? a. Galvanized iron b. Copper c. Zinc d. Nitrates 56.What’s the most common foodbourne bacterial infection? a. Shigellosis b. Campylobacteriosis c. Yersiniosis d. Salmanellosis 57. Bacteria examination of drinling water quality should ALWAYS include which type of test to determine POTENTIAL fecal contamination a. total coliform count b. fecal coliform count c. fecal streptococci count d. total plate count 58. What is the major constituent of domestic sewage? a. Suspended solids b. Decomposition byproducts c. Combined solids d. Water 59. The plans and specifications for a temporary food establishment shall include all of the follwing except: a. menu b. equip list c. vendor’s license d. proposed layout 60.The drain line from an ice machine should be a. Connected through a grease trap b. Connected to the top of the nearest p-trap in a sink c. Equipped with mechanical backflow prevention device d. Equipped with an air gap into an open drain 61. Salmonellosis is the result of an infection caused by a a. bacteria b. fungi c. protozoa d. virus 62. A particle of which soil type has the smallest total surface area? a. Silt b. Clay c. Sand d. Silt foam 63.Amoebic dysentery is caused by a a. Fungi b. Bacteria c. Protozoa d. Virus 64. Modified atmosphere packaging of foods such as the sous-vide process may allow whch public health hazard to occur? a. Growth of C. botulinum above 41F b. Growth of molds or yeasts at 41F c. Growth of L pneumophilia at temps 41F d. Production of crombrotoxin by histamine producing bacterial at 41F 65. Health hazards associated with the improper use of cleaning chemicals include all of the following except a. xmsn of pathogenic bacteria b. inhalation of toxic fumes in poorly ventilated area c. direct exposure to toxic chemicals from mislabeling or spills d. reactions b/w different types of chemicals resulting in explosions 66. An institution is BEST characterized as being a complete a. community b. shelter c. house d. facility 67.The characteristics of hazardous wastes include the following EXCEPT a. Lethality b. Reactivity c. Ignitability d. Corrosivity 68.The three principal considerations in protecting personnel from radiation are a. Distance, time, shielding 69.Where is the BEST location to place radon detectors in a school? a. Science classrooms b. Ground floor classrooms c. Areas or crawl spaces below grade d. Stairwells and similar areas that are poorly ventilated 70.What is the primary mandate for HAZWOPER? a. Hazwaste collection and disposal procedures b. Sandards for storage of hazwaste c. Proper tpes of ppe for handling hazwaste d. Emergency response and preparedness programs for industry, including written action plans 71. The primary responsibility of the JIC (joint info center) int eh context of the ICS (incident Command System) is to a. set up a system of chain of custody b. create job descriptions for volunteers c. receive and handle all media inquiries d. create a database for tracking medication distribution 72.Vector/Pest problems resulting from disasters include all fo the following except an increase in: a. Population of brown recluse spiders b. Fl breeding sources from exposed trash and dead animals c. Rodent=breeding sources due to harborage and feeding opportunties d. Mosquito habitats as a result of flooding and rubbish serving as containers for water 73. Food is most often directly contaminatd from contact with a. insects b. rodents c. humans d. chemicals 74. What are the characteristics of hazardous waste as defined by the EPA? a. Chemical wast produt, business by-product b. Poisonous, explosive, flammable c. ignitable, corrosive, reactive, toxic d. Solid, explosive, toxic, reactive 75. Food contact surfaces of equipment MUST be a. made of stainless steel b. smooth (non-porous) and easily cleanable c. east to take apart and reassemble d. made of food-grade polyethylene 76. What’s the required time period for retaining shellfish tags? a. 15 days b. 30 days c. 60 days d. 90 days 77.Which is the least likely way biological, chemical, and physical causative agents of disease can be spread? a. Soil b. Insects c. Fomites d. Food and water 78.When investigating the cause of a nosocomial infection, sanitarians should realize that a. Hospital has poorly trained staff b. Hospital patients should be quarantined c. Multiple routes of disease xmsn may be present d. Hospital needs ot be evaluated by an accredited agency 79.The detention time for large septic tanks (1000+ gallons) shoud be a minimum of a. 2 hours with 6-12 recommended b. 12 hours with 24-72 recommended c. 72 hours with 120 to 200 recommended d. 80 hours with 1 to 2 weeks recommended 80.Which of the following sources of contamination might result in an increased risk of typhoid fever from untreated drinking water supplies? a. Wastewater from poultry processing plant b. Contaminated runoff from a livestock feed lt c. Pit latrine adjacent to a drinking water spring d. Runoff from an open dump containing domestic sewage 81.As organic pollutants enter a stream from any gven source, the organic nitrogen is oxidized to NH3, then to NO2, and finally to NO3. This results in downstream increase of a. Non-invasive bacteria b. Game fish that eat the pollutants c. Bacteria, sludge worms, red midges, and aquatic sow bugs d. Normal aquatic insects found in non-polluted water 82.All of the following items are necessary in the immediate area of a school’s human and environmental science kitchen EXCEPT a. Hand soap b. Sanitary cloth towels c. Handwashing sink d. Hot water 83.What material is recognized as the BEST universal absorber of gases and vapors? a. Activated charcoal 84.What’s the correct range for maintaining the free chlorine residual in a swimming pool? a. 1-3ppm b. 4-6ppm c. 7-9ppm d. 10-12ppm 85.According to RCRA, a generator can accumulate hazwaste onsite without a permit for how long (MAXIMUM)? a. 180 days b. 120 days c. 90 days d. 30 days 86.How many hours must a public swimming pool filtration system run each day? a. 6 b. 8 c. 12 d. 24 87.Which of the following is the MOST important reason for critically evaluating the use of vacuum cleaners in hospitals? a. Noise level exceeding 110dB b. Inappropriate infectious agent disposal c. Increase in bioburden levels in the air d. Effect of misting before vacuuming 88.What is the MAXIMUM acceptable hot water temperature range for spas and hot tubs? a. 99F to 101F b. 102F to 104F c. 105F to 107F d. 108F to 110F 89.An evaluation of critical areas in a hospital for airborne infectious agents should include all of the following air pressure/air flow patterns except a. Patient rooms to hallways or the bathrooms b. Hallways to linen storage c. The nursery to the viewing area and hallway d. The hallway to the morgue REHS_Big_Practice_Exam_2 1. A psychrophillic organism grows best at what temperature? A. 50F (10C) B. 80F (27C) C. 100F (38C) D. 120F (49C) 2. The number of distribution water samples collected is normally determined by all of the following EXCEPT: A. Past History B. treatment methods C. quality of the water source D. projected analytical analysis 3. According to the Resource Conservation Recovery Act, household hazardous waste must be disposed of in what manner? A. Household hazardous waste is exempt from RCRA requirements B. It must be disposed of as a hazardous waste by a professional HAZWASTE company C. It must be incinerated D. It should be disposed of in a storm drain or sanitary sewer 4. Hazardous conditions have been found in the confined space of a famr manure storage pit. Which of the following would be LEAST likely to occur in harmful amounts? A. Sulfur dioxide B. Ammonium trioxide C. methane D hydrogen sulfide 5. Which of the following factors BEST ensures that underground storage tanks will not leak? A. Steel construction B. Seams sealed with epoxy resin C. replacement every five years D. corrosive resistance 6. In cleaning an environmental surface, which factor exerts the LEAST effect on the cleaning process? A. history of use B. topography and temperature C. duration of soiling on the surface D. degree of porosity of the surface 7. All of the following factors must be considered before the construction of a well EXCEPT: A. lakes and ponds n the immediate area B. existing feed lots C. underground onsite sewage disposal systems D. sewage-stabilization ponds 8. All of the following are functional areas of the Incident Command System (ICS) EXCEPT: A. finance B. logistics C. operation D. Management 9. What permanent control methods should be implemented to abate a ly infestation in a neighorhood? A. Spay insecticide B. fly traps C. eiminate breeding grounds D. window and door screens 10. All fo the following diseases ECEPT which one are associated with transmission via swimming pools? A. athletes foot B. platar wart C. adenovirus D. encephalitis 10. Which is NOT safety consideration of a school playscape? A. handicap accessible B. absence of pinchpoints C. resiliency of ground surface D. labeled for age appropriateness 11. Fill and draw wading pools in child care settings should be: A. prohibited B. drained and cleaned after each use C. filled with water containing a chlorine sanitizer of at least 3PPM free available chlorine D. used by children only over 3 years old 12. common control methods for malaria include all of the following EXCEPT: A. elimination of resorvoir animals that contain Plasmodim spp. B. elimination of mamade areas of standing water (ope containers, etc…) C. use of screens rooms and bed nets in endemic areas D. use of Gambustia affinis fish for control of mosquitos/larvae 13. What is the most desirable method of controlling an occupational noise problem? A. shield or enclose source B. control environmental factors that could attenuate the sound, such as carpeting bare floors C. Use of personal hearing protectors, such as properly fitting earplugs D. turn the noise off 14. What law grants the EPA the authority to devise a system to examine new chemicals before they reach the marketplace? A. FIFRA B. EPCRA C. NEPA D. TSCA 15. The following conditions apply to a community in June: Number of giardiasis cases = 235 Community population = 10000 Number of cases of E. Coli O157:H7 = 2 What is the prevalence per 1000 for dgiardiasis in June? A. 23.50000 B. 2.35000 C. 0.02350 D. 0.00235 16. What is the MINIMUM period of time that a history of prior food consumption should be recorded during the investigation of a foodborne illness? A. 12 hours B. 24 hours C. 36 hours D. 72 hours 17. A mobile food establishment, upon acceptance of the permit to operate, SHALL: A. conspicuously post the permit B. evaluate the menu for marketability C. purchas a copy of the food code D. enroll in an approved food safety course 18. What is the BEST method to prevent Salmonella enteritidis when eggs still in the shell are used? A. Obtain eggs from an approved source B. thoroughly wash the outside of the shells before using C. thoroughly cook all eggs and foods containing eggs D. keep eggs under the proper temperature until use 19. What percent of BOD removal is required for treatment plants using the trickling-filter or waste stabilization pond treatment process? A. 30% B. 45% C. 50% D. 65% 20. An inspector should know all fo the following information regarding land around a well for drinking water EXCEPT A. surface and subsurface area surrounding the well B. time of travel of a potential contaminant, drawdown and flow boundaries C. hydrogeological considerations, radius of influence, recharge area and aquifer information D. source of well water and diffusion patters from downstream contamination sources 21. At what rate do toddlers absorb lead as compared to adults? A. equally B. 2X as much C. 5X as much D. 15X as much 22. What is the MOST SIGNIFICANT cause of poor IAQ leading to higher levels of biological contaminants and increased health effects in a home? A. pet dander B. volatile Organics C. tobacco smoke D. increased humidity 23. At a MINIMUM, and individual can be protected from alpha particles with what material? A. a sheet of paper B. several inches of lead C. ½ inch of regular lead shielding D. several millimeters of aluminum 24. A method of treating small quantities of water for consumption that will kill the most bacteria and viruses in emergency situations would be A. applying iodine tablets to water B. boiling clear water vigorously for one to two minutes C. treating water with 1 to 2 drops of chlorine bleach per quart. D. straining water through fine mesh cloth and adding ammonia 25. in order to minimize transmission of infection in a tattoo facility, all of the following aseptic control techniques should be utilized EXCEPT: A. sterile glove use B. antisepsis of tattoo C. proper handwashing D. equipment disinfection 26. All of the following are true statements about houseflies EXCEPT A. bacteria may be carried in a fly’s digestive system for four weeks B. bacteria can be transmitted to succeeding generations C. Houseflies have hairy bodies and sticky padded feet D. houseflies ingest solid foods containing germs 27. How is the term “prevailing winds” commonly defined? A. The direction from which the wind comes during the greatest proportion of the time B. The wind direction that occurs most frequently during periods of high pollutant concentrations C. The wind speed that occurs during the greatest portion of the time D. the wind direction that, for a given speed, occurs most frequently during a given time period 28. paint that is peeling/chipping in a pre-1978 home presents which MAJOR heatlh hazard A. Radon B. Lead C. Asbestos D. GI illness 29. All of the following common pool chemicals are oxidizers EXCEPT A. sodium bisulfate B. Sodium hypochlorite C. Calcium hypochlorite D. potassium monopersulfate 30. The development of silicosis is affected by all of the following factors EXCEPT A. the amount and type of dust inhaled B. the percentage of asbestos in the dust C. the size of the particles inhaled D. the percentage of free silica in the dust 31. Which of the following respirators should be used in atmospheres where the oxygen content is 15% A. full-face APR B. half-face APR C. positive pressure self-contained breathing apparatus D. positive pressure ventilator with divergent fins 32. Which one of the following inspections requires a search warrant? A. inspection by consent B. denial of entry to a regulated business C. inspection of a site open to the public D. situations resulting in imminent threat to health or life 33. proper infection control procedures in the management of disasters include all of the following EXCEPT A. boiling/chlorination of water supplies B. disinfection of all surfaces contaminated by flood water C. insect and rodent control measures to prevent vector-borne disease D. Assessment of food supplies, discarding food which has been damaged or temperature abused 34. Universal precautions in a tattoo facility are intended to prevent infection by all of the following routes EXCEPT A. parental B. intact skin C. conjunctival D. mucous membranes 35. What is the purpose of the Department of Transportation Emergency Response Guidebook? A. set standards for the proper resppnse to chemical accidents B. To specify the types of cargo that may e transported on interstate highways C. To allow state and local governments control volumes of traffic on highway systems D. To provide info to first responders in the identification of HAZMAT 36. What type of filter should be used in a water treatment system designed to treat water containing high concentrations of amoebic cysts? A. rapid sand B. slow sand C. diatomaceous earth (DE) D. arenaceous 37.The primary vector of rocky-mountain spotted fever is: A. Culex B. Aedes C. Borrelia D. Dermacentor 38. Which of the following factors specifies the effluent strength of the sewage? A. bacteria count B. biochemical oxygen demand C. total dissolved solids D. viscosity 39. Which sampling scheme is an example of a non-biased strategy? A. stratified sampling B. snow ball sampling C. convenience sampling D. judgmental sampling 40. Fresh uncooked fish stored on ice in a walk-in refrigerator should be stored: A. in the coldest part of a walk-in refrigerator, away from the door B. on a low shelf, next to other raw animal foods such as poultry and beef C. next to cooked and ready-to-eat foods only if it is to be served as sushi D. above poultry, ground beef, and pork, but below fruits, vegetables, and cooked or ready-to-eat foods 41. There are 8 factors required for the growth of microorganisms. They include oxygen, favorable environment, food, water, pH, space, and absence of toxins specific to the organism. Certain organisms have developed in such a way that they cannot live in the presence of oxygen. These are called: A. Aerobic B. Anaerobic C. thermophilic D. psychrophilic 42. Materials that aer used in the construction of a water storage tank for a mobile food establshment shall be all of the following EXCEPT A. rough B. non-absorbent C. easily cleanable D. corrosion-resistant 43. Hantavirus Pulmnary Syndrome is an old disease that has been newly recognized as having distinct rodent hosts. Which one of the following is of the greatest concern? A. oat rat B. roof rat C. deer mouse D. Norway rat 44. The Minimum Distance b/w beds in an adult institution with an alternating head to foot sleeping arrangement should be: A. 3 feet B. 4 feet C. 5 feet D. 5 feet 45. Which of the following diseases is the LEAST likely to be contracted by a child plying with interactive water features at an amusement park? A. shigellosis B. enterobiasis C. E.coli O157:H7 D. cryptosporidiosis 46. The MAX safe hot water temp for a personal hygiene water source in prisons is: A. 110F B 120F C. 125F D 130F 47. What legal principle ensures people will NOT be deprived of their rights? A. Bill of Rights B. Writ of Habeus Corpus C. Writ of Mandamus D. Due Process 48. Which disease-causing agent lives in the intestines of cockroaches? A. Salmonella B Varicella C. Plasmodium D. Coxiella 49. Biological agents historically used by terrorists include: A. Sarin, Soman, and VX B. Salmonella, anthrax, smallpox C. chlorine, phosgene, sulfur mustard D. Mustard, Lewisite, and Phosgene Oxime 50. A small heating-gas leak has been detected during a housing inspection. What’s the MOST common procedure for locating the leak? A. observe gas meter to determine source f gas leak B. identify leak by odor C. apply soap suds to suspected pipe connections D. listen for the sound of escaping gas 51. Which of the following is NOT a health effect associated with substandard housing? A. lower life expectancy B. higher infant mortality C. increased occurrence of congenital birth defects D. Greater occurrence of injuries, burns, and accidents 52. One element of the EPAs groundwater source protection plan addresses: A. use of organic filters on residential faucets B. emergency water storage and treatment C. solid waste management of sewage greater than two miles down-gradient from a wellhead site D. the time of travel of potential contaminants through the aquifer 53. What causes turbidity in water? A. substances dissolved in water B. natural breakdown of organics C. dissolved gases D. particles suspended in water 54. All foods received from a vendor SHALL be A. unadulterated b. at 41F or less C. hermetically sealed D. from an NSF approved vendor 55. What’s the purpose of blanching food? A. to inactivate enzymes, set natural color, and coagulate soluble constituents 56. According to the current FDA Food Code, bare hand contact with food that is being prepared A. shall be minimized B. is not a public health concern C. may only occur within 25 feet of a hand-wash sink D. is acceptable when hand sanitizers are used 57. Which of the following conditions is a critical control point in the preparation of fried chicken when HACCP principles are applied? A. frozen chicken received frozen B. frozen chicken thawed in a refrigerator C. raw chicken breading discarded after use D. chicken cooked to an internal temperature of 165F 58. Several workers in a building report similar symptoms including headaches, Inspector considers “Sick Building Syndrome.” What would be the FIRST course of action for the inspector to take? A. collect air samples for microanalysis B. begin air sampling for VOCs C. Order an evacuation of the building D. Interview the victims REHS REVIEW BIG PRACTICE EXAM 3 1. which of the following sets of terms describes three stream-pollution zones downstream from a source of biodegradable waste? a. Zone fo degradation, zone of decomposition, and zone of recovery b. Zone of decomposition, zone of aeration, and zone of recovery c. Zone of decompositon, zone of sedimentaton, and zone of recovery d. Zone of degradation, zone of sedimentation, and zone of recovery 2. The hazards of greates concern to patrons in a full-service food establishment are ____________________ hazards. a. allergen b. biological c. chemical d. physical 3. Soil of what color would generally be unsuitable for subsurface absorption of wastewater? a. red b. mottled brown c. yellow d. orange 4. which of the following materials comprise the LARGEST percent by volume landfills? a. materials containing metals b. glass and glass products c. paper and other wrappings 5. Any connection in the water system that brings pure water intended for human consumption in contact with impure water is known as a: a. cross-contamination b. Parrallel connection c. Cross connection d. Crossed supply 6. Typhoid fever is caused by a member of what genus? a. Salmonella b. Escherichia c. Shigella d. Listeria 7. Which would be the MOST SAFE choice of food to serve at a school function? a. home-made custard pie b. jome-made jarred fruit c. home-made chili d. homegrown vegetables cooked by students 8. All food served from a temporary food establishment must be prepared at any of the choice provided, with exception of: a. a restaurant b. a catering establishment c. a residence of the establishment management d. within the temporary establishment 9. Complete soil treatment of septic tank effluent includes all of the choice provided except: a. physical filtration b. coagulation c. chemical and biological degradation 10. An inspection has revealed that a septic tank is sitting in a high water table and isn’t buried. What is the MOST likely consequence to the tank? a. seam will crack b. will sink c. corrosion d. it will float or tip 11. Monitoring categories are divided into several types. Which is NOT a factor in which these categories are based? a. location b. time c. distance d. method of analysis 12. Sampling for Giardia cysts usually involves filtering a. 300 gallons of water through 0.5 micro pore cartridge b. 400 gallons through 2 micropore cartridge c. 500 gallons through 1 micropore cartridge d. 600 gallons through 3 micropore cartridge 13. which foodborne pathogen is a spore former? a. Campylobacter jejuni b. Salmonella Typhi c. Listeria monocytogenes d. Bacillus cereus 14. All of the following are signs that a food has been thawed and refrozed with the exception of: a. food is solidly frozen b. formation of ice crystals c. ice and food frozen into one solid block d. water damage on packaging 15. Which of the following is an ESSENTIAL condition of proper food refrigeration? a. utilization of space by adequate packing b. provision of an air space around each food item c. isolation of slightly spoiled foods in a restricted compartment d. maintenance of a high level of humidity 16. In which of the following institutions would nosocomial infections have the MOST serious impact? a. hospital b. psychiatric ward c. elementary school d. daycare center 17. The ideal humidity level in a home is between: a. 40-60% b. 30-40% c. 70-80% d. 65-70% 18. Houseflies can pnetrate and emerge through what minimum thickness of compacted cover in a landfill? a. 6 inches b. 12 inches c. 24 inches d. 48 inches 19. L. penumophilia is MOST commonly transmitted by: a. contaminated drinking water b. skin inoculation c. respiring contaminated aerosols d. direct contact with contaminated surfaces 20. What is the primary intent for the hazard communication standard? a. provid risk assessment that enables management to make knowledge-based decisions b. provide chemical inventory and employee training program c. regulat ingredients that manufacturers can include in commercial chemicals d. evaluate chemicals for hazardous properties 21. for an industrial manufacturing facility emergency situation, the emergency action levels to classify the seriousness of situations are: a. Level 1: Alert, Level 2: Site emergency, Level 3: general emergency 22. Why are ventilation exhaust systems often malfunctioning or improperly functioning in tight buildings in winter? a. because no provision is made for make-up air 23. Which of the following forms of hepatitis is typically spread by fecal-oral route? a. A b. B c. C d. D 24. With a water table depth of 3 ft, which of the following soil characteristics reflect OPTIMUM conditions for disposal and treatment of domestic sewage? a. low absorption and low permeability b. low permeability and moderate adsorptive capacity c. high permeability and high adsorptive capacity d. high permeability and low cation exchange capacity 25. What type of filter is recommended for a drinking water treatment system in small communities and developing areas? a. rapid sand filter b. granular media filter c. multimedia filter d. slow sand filter 25. What’s the correct order of basic water treatment in a water treatment plant? a. coagulation, flocculation, sedimentation, filtrations b. filtration, flocculation, sedimentation, coagulation c. flocculation, sedimentation, coagulation, filtration d. coagulation, filtration, flocculation, sedimentation 26. Which of the following procedures is used to prevent well contamination by surface water runoff? a. Insertion of steel casing into the bore hole b. Grouting the annulus between the casing and the bore hole c. Placing sand packs around well screens d. Installing protective well covers and locking caps 27. Factors which could influence health and disease transmission in an institutional setting consist of a. Rodent and insect control practices b. The training levels of staff at institutions c. The types of diseases present in the community d. High density populations, proximity of residents, and types of waste generate. 28. Which feature of soil is the MOST important in determining the suitability of a potential site for an onsite wastewater disposal system? a. Texture b. Structure c. Permeability d. Density 29. What does a negative phosphotase test in mild indicate? a. It has been sterilized b. Has been properly pasteurized c. Coliform is absent in the milk d. Post-pasteurization contamination has occurred 30. What is the MOST effective and longest lasting mosquite control method to eliminate large breeding areas? a. Larvicide application b. Shading from sunlight c. Setting water in motion d. Draining bodies of water 31. Scabies is commonly transmitted by which: a. Fleas on Norway rats b. American dog ticks c. Physical contact with infected persons d. Handling food with contaminated hands 32. Which would NOT be a housing violation a. Refuse in the attic b. Incomplete bathroom c. Interior paint needed d. Rotted and missing siding 33. The increased risk of nosocomial infections is due PRIMARILY to a. Lack of vaccines b. High technological equipment c. Improper handwashing and sanitation d. Improper food handling and processing 34. The MOST effective method for safeguarding a community’s drinking supply is: a. Armed guards at all times b. Ongoing surveillance and fencing of treatment facilities c. Agreement with local law enforcement to police properties d. Testing the water for anthrax and other potential contaminants 35. Institutions can be viewed as small communities unto themselves which provide ideal environment for the spread of communicable diseases. Therefore, the sanitarian MUST recognize that institutions are: a. Require a high degree of attention to detail b. Are often regulated by the federal government c. Can be viewed equally as any other type of inspection program d. Require surveillance and preventive measures adapted to the particular use and population 36. Water hardness is caused by a. dissolved calcium and magnesium bicarbonates b. high sodium chloride concentrations c. excessive levels of hydrogen sulfide d. low ph, alkalinity and dissolved oxygen 37. What is the recommended final thickness of earth cover for sanitary landfills? a. 6 nches b. 12 inches c. 24 inches d. 36 inches 38. Which of the following is NOT normally found in raw vegetables (unwashed)? a. Listeria monocytogenes b. Campylobacter jejuni c. Clostridium spores d. Shigella bacteria 39. A certified shellfish shipper’s tag MUST a. Contain recipes b. Contain information on the quality of the shellfish c. Be kept on file for 90 days after the container is empty d. Provide instructions for storing the shellfish 40. Which of the following rules is the MOST important of the rules for safe storage of food? a. Follow the “first in, first out” principle b. Store products in order of “pull by” date c. Repackage dry goods into metal containers d. Refrigerate canned foods 41. Individual onsite watewater treatment systems function well under which condition? a. Sandy soils with mottling b. Moderately permeable soils and low seasonal water tables c. Impervious formation at a depth of 10 feet d. Areas with high water tables 42. What’s the PRIMARY rule for confirming foodborne illness? a. Two or more people eating the same food to become ill b. Physician diagnosis c. Same organism isolated from the food and from ill individual d. Swab samples of the food preparation surfaces reveal presence of bacteria 43. On public beaches, what’s the MINIMUM beach area per person required? a. 25 sq ft b. 50 sq ft c. 40 sq ft d. 100 sq ft 44. a visit made to determine if the potential danger to health exists is called a. inspection b. search c. lawful entry d. surveillance 45. The psychrometer is used primarily as a tool to measure what? a. Relative humidity b. Specific heat c. Dew point d. Wind speed 46. All of the following should be discarded after a flood with the exception of which? a. Canned foods with rust b. Sealed canned foods c. Food in glass jars d. Drinks in tightly capped bottles 47. What type of equipment is necessary for disaster management? a. PPE b. Water sampling equipment c. Personal computers and electronics d. Bulk food supplies for the workers 48. If during a sewage spill, the owner refuses to speak with the inspector, or refuses to take corrective action, what would be the BEST course of action to prevent illness to the public? a. File a report with the city or county b. Revoke the operating permit c. Obtain a search warrant d. File for a temporary injunction 49. What’s the max amount of hazwaste that a company can produce per month before RCRA would apply? a. 150 lbs b. 220lbs c. 300 lbs d. 500 lbs 50. What term identifies a bushel of apples containing a pesticide in a quantity that EXCEEDS the tolerance level established for apples by the government? a. Misbranded b. Changed c. Adulterated d. Condemned 51. What disease vector is responsible for dengue fever? a. Norway rat b. American Dog Tick c. Aedes Mosquito d. Anopheles Mosquito 52. Who is responsible for the prevention of infectious diseases, ultimately, at a tattoo parlor? a. Customer b. Inspector c. Regulator d. Owner/artist 53. Which agency regulates personal protection at hazardous waste sites? a. EPA b. OSHA c. DOT d. FEMA 54. What is the disease vector for Malaria? a. Norway rat b. Horse fly c. Mosquito d. Deer tick 55. Infectious wastes include all of the following with the exception of: a. bandaging removed from wounds b. discarded serums that have been autoclaved c. waste from renal dialysis d. biowaste from isolation rooms 56. polio is caused by which of the following? a. Virus b. Bacteria c. Protozoan d. Fungus 57. Which is NOT known to be spread by Musca domestica? a. Typhoid fever b. Lyme Disease c. Dysentery 58. Basic characteristics common to institutions and establishments include all of these EXCEPT: a. Site selection b. Water supply system c. Fire fighting facilities d. Wastewater disposal systems 59. What term describes the destruction of pathogenic microorganisms in food or liquid via heating? a. Sterilization b. Autoclaving c. Decontamination d. Pasteurization 60. Which of the following factors should be calculated to help prevent migration of groundwater contaminants into drinking water wells? a. Suction lift b. Static water level c. Cone depression d. Brake horsepower of the well pump 61. What two organizations have developed standards for equipment santitation and safety? a. EPA and UL b. OSHA and NSF c. OSHA and CPSC d. NFPA and EPA e. NSF and UL 62. What major benefit does disposed photodegradable plastic have on a sanitary landfill? a. Reduces risk of contaminating groundwater b. Decreases volume of waste c. Aids in breakdown of waste d. Removes or reduces putrid odors from waste 63. Which is NOT a fire prevention strategy in a prison? a. Proibition of polyurethane mattresses b. Limitation of personal propery in living areas c. Manual over-ride for electric cell doors d. Fire-resistant privacy curtains 64. In a building built in the 60s, which areas would be least likely to have asbestos? a. Fire Insulation b. Soundproofing c. Ceramic floor tiles d. Steam line insulation in boiler e. Ceiling tiles and ceiling material 65. Plague is transmitted by what vector? a. Fleas b. Flies c. Mosquitoes d. Lice 66. 67. Tattoo best practices include ALL EXCEPT a. Protective gloves b. Proper handwashing hygiene c. Single-use ink d. Single-use needles e. Disinfection of needles 68. The overall responsibility for the management of a bioterrorist incident lies with who? a. Planner b. Operations Chief c. Response Team Leader d. Incident Commander 69. What chemical is used to measure pH in pools and spas? a. DPD b. Phenol Red c. Aluminum sulfate d. Mehtyl Orange 70. What’s the MOST widespread urban pest in the world? a. American Cockroach b. German Cockroach c. Brown-banded Cockroach d. Oriental Cockroach 71. The minimum distance between a sewer line and a water line in a mobile home or travel trainer park should be what distance? a. 12 feet b. 10 feet c. 8 feet d. 6 feet e. 4 feet 72. When using a colorimetric test for swimming pools, the MOST accurate reading can be obtained viewing the comparator against: a. The deck b. Fluorescent light c. White wall or paper d. Sky 73. Which pesticide can a homeowner use for rodent control? a. Ficam b. Chloropicrin c. Zinc phosphate d. Warfarin 74. BISSC standards cover equipment used in the ____________industry. a. Beverage b. Meat-packing c. Baking d. Restaurant 75. Trailers in a mobile home park must be how far away, at a minimum, from another trailer or structure? a. 8 feet b. 10 feet c. 15 feet d. 20 feet 76. The date code on a carton of milk indicates: a. last date the milk may be sold b. last date the milk can be consumed c. date the milk was pasteurized d. date the milk was homogenized e. date the milk is considered spoiled 77. Sludge can be disposed by any of the following methods with exception of: a. chemical stabilization b. composting or burning c. land application d. ocean disposal 78. What chemical property is measured in g/ppm? a. Specific gravity b. Density c. Vapor concentration d. Vapor density 79. Critical Control Points (CCP) in a HACCP Plan should be specific to: a. Hazardous foods b. Foods and containers c. Products and processes d. Employees and work sites 80. Which would indicate that chilled fish is fresh? a. Slight discoloration of the skin and eyes b. Bright red gills c. Soft friable flesh d. Non-rigid tail 81. During a site investigation of septic tanks and drain fields, the LEAST important drain field distance is the distance of the field: a. to the bed rock b. to the well c. to the water table d. below the surface 82. How is toxicity affected when food containing bacterial toxins is frozen for long periods? a. Toxicity has no appreciable reduction b. Complete destruction of toxins c. Gradual reduction of toxins d. Significant increase of toxins 83. Drinking water odor and taste is NOT treated by which of the following? a. Chlorination b. Ozone generation c. Activatd charcoal d. Activated Limestone 84. Biochemical oxygen demand measures a. rate of oxygen uptake by micro-organisms in a sample of water at a temperature b. rate at which 02 oxidizes organic and inorganic materials over 5 days c. the same parameters as chemical oxygen demand d. none of the above 84. The best single measure for waste water is a. COD b. BOD c. PPE d. ATP 85. Black water contains a. waste water from sinks and showers b. waste water from hot tubs c. waste water from toilets d. all of the above 86. __________ specifies the treatment outcome required for wastewater. a. OSHA b. POTW c. NPDES d. SDWA 87. A septic tank has three distinct levels, which level is desirable to exit the septic tank a. Scum b. FOG c. Clear zone d. Sludge 88. The inlet of a septic tank should be a. 3” higher than the outlet b. 4” higher than the outlet c. 3” higher than the sludge d. 4” higher than the clear zone 89. A cleanout must be placed a. every 5 feet b. whenever the pipe turns sharper than 45 degrees c. every 50 feet d. both b and c 90. A p trap is used to a. decrease turbulence into the septic system b. prevent sewage gas from entering home c. prevent SS from entering the septic system d. vent sewage gas from home 91. Your gravel drain field has to be 100 feet long due to the flow of your system. You note that after installing it, it will come within 75 feet of your neighbors well. What should you do? a. relocate your system b. nothing, the isolation from the well is acceptable c. consider using a gravel less system d. sue your neighbor for locating his well too close to your property 92. A septic tank must be a. 10 feet from the property line b. 50 feet from a well c. 50 feet from a spring d. all of the above 93. The purpose of a drain field is to a. evenly distribute effluent from the tank into the soil b. promote microbial action within the pipes c. allow for overflow conditions of the septic tank c. a place to pump out your septic tank 94. The munsell chart measures a. saturation of soil b. color of soil c. percolation of soil d. permeability of soil 95. Soil permeability can be measured using a. Gooch crucible b. BOD5 c. March funnel d. Percolation test 96. The area of seepage is determined by a. limiting layer b. soil quality and number of bedrooms c. strength of the waste d. all of the above 97. The primary indicator organism for fecal contamination of a water supply is a. Salmonella Typhi b. Salmonella Typhimurium c. Escherichia Coli d. Vibrio Cholera