REHS 2023 with complete solution

What entity regulates manufactured housing? HUD How far should a waste pipe be located from the drinking water pipe in a mobile home MINIMUM? 10 ft After a disaster, dead animals should be buried ___ from water source? 100 ft away, 2 feet underground After flood disaster, all the following should be performed to limit infection except: evaluate food source? An ice machine drain line should be: into an open floor drain with an air gap After a flood, which would not increase? brown recluse spider population Which should you advise citizens to do to avoid mosquito bites after a flood? remove rubbish to prevent breeding grounds Muscas domesticus has been shown to transmit? S. typhi (typhoid) Employees working in wastewater treatment plants are at risk for: Hepatitis A ? or L. pneumophilla Most foods are infected by contact with: humans To limit potential of psittacosis in a childcare facility, the following animal should not be allowed: parrot What would be your main concern about a humidifier used in a nursery with newborns? humidity = mold growth or humid equipment requires cleaning Ameobic dysentery is caused by protozoa Which is not a sign of thawing and refreezing therefore temperature abuse of a product: product is frozen solid Pooled eggs from pasteurized shell eggs, once cracked must be kept at: 41 degrees F The best practice to limit the growth of Salmonella in raw shell eggs is: cook to proper temperature before service Encephalitis in the US is transmitted by what mosquito: culex Rocky mountain spotted fever is transmitted by: Dog Tick What is the maximum allowed temperature to heat a spa? 104 degrees F Institutions are known as a complete: house or facility or community The maximum allowed water temperature for correctional facility bathing is: 120 degrees F Which of the following would respond to a terrorist event involving drinking water? EPA, DOD, FBI, FEMA, CDC If a company dumped more than the MCL of pollutants in a stream, they would be required to: remove contaminant or treat in place What does a negative phosphate test indicate? pasteurization has occurred Milk heated to 190 to 212 degrees F is called: pasteurization Which of the following as an REHS would you respond to first? voicemail describing confirmed illnesses and several absences in a daycare facility In what order would you respond to the following? 1)chlorine gas leak 2)power outage at restaurant 3)no hand sink at temp event How would you calibrate your thermometer? test in ice bath at 32 degrees F The primary purpose of hazwopper is: ... Drums of hazardous waste must be permitted if stored on site for more than: 90 days How should you introduce a community plan? How should you present a development plan to the community? invite community members to speak and avoid a lecture to the community What is the first thing an inspector should do when entering a facility to start an inspection? introduction An officer performed a duty in an incorrect manner. The officer knew his was against the law. The officer is guilty of: misfeasance USDA mark of inspection is a: circle What would you need to calibrate a pH meter? a buffer Where can food for a temporary food permit NOT be prepared? at the permit owners residence Which is not needed for a plan and application of a temp food permit? the vendors licence A dirty bar of soap at a hand sink may act as a communicable disease as a: fomite What is the most likely cause of bio contamination and causing health problems in the home? tobacco smoking The use of chemical agents to kill or inhibit bacterial growth directly in human tissue is known as... antisepsis A patient complains of itching after bathing in a spa, what is the most likely disease? P. aeruginosa The best sticker to verify an autoclave is: temperatures above 121 degrees F? The ultimate responsibility to ensure clean equipment is used in body art facilities falls to: owner/employees C. jejuni would be requiring ___ practices in the lab? BS2 What would be the best breathing apparatus for an emergency clean up where the environment has 15% oxygen? positive pressure face mask with portable air supply What is the best order for a corporation to follow after a hazardous waste spill? contain the spill contact the right agency ensure hazardous contractor is secured measure for possible contamination of surface water supervise waste cleanup The Department of Transporation Emergency Response Guidebook is mainly used: For first responders so they may know more about the chemical spilled A pool of 1198 gallons has a flow rate of 153 g/m. How long is the turnover rate? 1198/ turnover rate = 153 1198/153=7.83 Radon is an alpha emission. This can be stopped by: a sheet of paper Radiation for those regularly exposed can be mitigated by: shielding, distance, and time of exposure A strain of E. Coli is used in a lab. Exposure to this strain is NOT known to cause death, but may cause illness. What laboratory precaution would not be needed? decontamination of clothes before exit Which of these is known to travel farthest in the soil: helminthes? After a diarrheal fecal incident, what ppm and contact time would you need for proper disinfection? 20 ppm 12.75 hours A pool should circulate for how many hours of the day? 24 hours A family complains of bites and itchy skin after waking up. What is NOT the likely culprit? ticks How would you as an inspector encourage a facility to maintain it's ice machine clean and free of mold? have facility maintain a cleaning log and schedule Which of the following is NOT needed in the immediate area of a school kitchen? sanitary cloth towels? What is the final depth of a landfill recompacted to final cover? 24 inches During a grocery store inspection on April 5th, you find a milk carton dated for April 1st. This date indicates: the last day the milk can be consumed A restaurant chef informs you that the facility is serving green beans that have been canned at home. Which is the most likely pathogen of concern? C. botulinum A Health Dept. center for mass distribution of prophylaxis in an emergency is known as a: POD Which of the following does RCRA require of household hazardous waste? RCRA does not regulate household hazardous waste Which pharmaceuticals can be removed by a wastewater treatment plant? none Which of the following methods is NOT an allowed method of hazardous waste disposal? ocean dumping A chef makes a ham sandwich at 11am for a banquet, he will leave them at room temperature for the event. How long does he have to serve them? four hours after 11am What would be the safest source of food? students growing and cooking their own vegetables? What is the order of violation regarding the FDA 2013 Food Code violation categories? core, priority, and priority foundation According to the FDA 2013 Food Code, which of the violations include an item with quantifiable measure to show control of hazards? priority What should you look for if you were performing a biohazard inspection? sharps container and red bags? Which is the least important distance to take into consideration when installing an on-site waste disposal system? distance below ground or distance to water table or distance to off-site waste disposal system # of people that live without clean water 1.1 billion # people die from diarrhea each year 1.8 billion unsanitary water contributes to morbidity saturated zone where all openings in rock/soil are filled with water water table top of saturated zone rises and falls with season confined aquifier water below solid rock or clay confining layer rock or clay artesian well well that goes through the confining layer Main sources of US water use thermo-electric power irrigation public supply domestic water use toilet flushing bathing public water system at least 15 service connections or regularly serves 25 individuals community water systems 25 people 15 connections year round non-transient, non-community water systems 25 people at least 6 months of the year church, school, factories transient non-community water systems road sides, campground, hotels, restaurants transients at least 60 days a year EPA requires certified operators for community public water systems non-transient, non-community water systems private wells are not regulated by EPA small water systems serve 25-10K people large water systems serve over 10K people regulated water systems are sorted by size and source sources of drinking water systems ground water surface water ground water under direct influence of surface water slow sand filtration large filter beds with slow filtration rate modern treatment options coagulation, flocculation, sedimentation filtration ion exchange disinfection colloids (solids) repel electrical charges flocs large particles attracted by coagulation flocs can be removed by sedimentation filtration early 1900's first state/local effort to control water-borne diseases 1914 first federal standards 1925 filtration and chlorination used in large cities sanitary surveys occur when certified operators adequate budget/tax future land use zoning 1974 federal standards established primary drinking water regulations roles of EPA, states, public water suppliers EPA established national primary drinking water regulations (enforcable) national secondary drinking water regulation (recommendations) state primary requirements acute health risk contaminants microbiological contaminants nitrates chronic health risk contaminants VOC IOC SOC radionucliotides primacy happens when states and indian tribes have primary enforcement responsibility not permanent- must be maintained field tests for chlorine DPD SNORT FACTS DPD preferred field test for chlorine SNORT Stabilized Neutral Orthotolidine reaction with Orthotolidine FACTS free available chlorine test syringaldazine trihalomethanes byproduct of chlorine trihalomethanes standard is for total trihalomethanes surface water treatment techniques giardia viruses legionella turbidity total coliform rule applies to all public water systems what system must be sampled for coliforms? distribution What can presence of coliforms indicate? treatment failures system breakdown Coliform tests use membrane filtration (MF) multiple tube fermentation (MTF) results reported at most probable number (MPN) Ecoli Tests LST-MUG MUG GUD LST-MUG Ecoli test tests for enzyme MUG fluoresces enzyme when exposed to UV GUD Ecoli 0157H7 doesnt have this enzyme so it's not detected lead and copper requires monitoring of customers taps maximum contaminant level for cryptosporidium zero interim enhanced surface water treatment rule applies to surface water and GWUDI systems serving over 10K people turbidity not to exceed .5 in 95% of samples never to exceed 1 raidonucleotide rules 2000 rule replaces 1976 rule applies to CWS new standard for uranium set arsenic standard 2001 rule replaced 1975 rule now 10 ppb arsenic causes skin damage circulatory system problems increased risk of cancer waterborne pathogens viruses bacteria protozoa helminthes waterborne viruses to know enteroviruses rotavirus norwalk virus hepatitis A rotavirus HRV - human rotavirus severe diarrhea in children norwalk virus NLV - norwalk like virus SRSV - small round structured virus norwalk ID 10-100 PFU's norwalk transmission fecal oral via humans 3% traced to water Hepatitis A HAV Hepatitis A transmission fecal-oral person to person food (molluscs) humans and primates water treatment for viruses 86-100%coagulationa dn flocculation 100% ozone stabilization ponds chlorine P. aeruginosa thermophilic waterborne bacteria hot tubs and geothermal pools cause UTI's L. pneumonphilia Legionnaires disease inhaled droplets, not P2P hot tubs, cooling towers, warm ponds Salmonella typhi Typhoid fever aka enteric fever NOT salmonellosis Salmonella typhi transmission by food water sewage water shellfish raw fruit/vegetables flies salmonella paratyphi milder version of typhoid fever campylobacter jejuni most common in US puppies and kittens undercooked chicken and pork can trigger guillan barre syndrome shigella (sonnei and flexneri) bacillary dysentery (stools containing blood) shigella ID 10-200 cfu shigella reservoir humans only shigella transmission fecal oral food/water anal sex flies vibrio cholera Cholera 01 or epidemic cholera humans infected food water or humans very rare Ecoli 0157H7 Shiga toxin producing bloody stools can lead to hemolytic uremic syndrome HUS or kidney failure ecoli 0157h7 transmission cattle, ground beef infected humans raw sewage/wastewater many other things giardia lamblia aka beaver fever giardia lamblia reservoirs human, muskrats, beavers