NEHA Environmental Health and Safety (EHS) Practice Exam

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• What is the best time for bat proofing?
• What does antisepsis refer to in health practices?
• What is a biohazard?
• Which two strains of virus are mentioned in the context of mortality rates?
• In what ways can hygienic cooking be evaluated?
• Which of the following is NOT a type of composting technology?
• What is the term for the cleaning process of human skin?
• What is the desirable range of alkalinity in water?
• What type of hazard do ignitable wastes typically represent?
• What minimum percentage of flow should skimmers and gutters receive in a standard pool?
• When is the ideal time to spray for ragweed?
• What are the two main components of the Hazard Analysis Critical Control Point (HACCP) system?
• What is the main focus of HACCP systems?
• What is the nature of formaldehyde?
• In the event of a hanta virus outbreak, what is a critical educational measure to implement for the public?
• What is the term for heating milk to the temperature range of 191-212 degrees?
• What is essential for storing meat to prevent cross-contamination?
• What does NPEDS stand for in environmental regulations?
• When adding a disposal unit to a kitchen and septic system, what do you expect to see an increase in?
• What type of sound frequencies are reported to be most effective against bacteria?
• What is the maximum time frame within which a core violation must be corrected?
• In terms of environmental health, what is the function of septic tanks?
• What is the proper response to a diarrheal fecal incident in a pool?
• What are some nonpotable uses of water?
• Which bacteria is specifically targeted by HACCP protocols?
• What concentration of Giardia cysts is known to cause disease?
• What defines the main purpose of regulations concerning water supply safety?
• Which indoor air pollutant is recognized as being more harmful?
• What is a high rate sand filter?
• Which mosquito species is responsible for transmitting malaria?
• What does an embargo represent in the context of public health?
• What are the three stages of lakes in their natural aging process?
• What is trichloroethane commonly used for?
• What is one common symptom of sick-building syndrome?
• What harmful effects can ozone cause in plants?
• What does reactivity imply about certain wastes?
• Which composting technology allows for controlled decomposition in a closed environment?
• Which measure is crucial for food safety in a disaster scenario?
• Which of the following is classified as a white good?
• What is the process that involves gradually allowing food to increase temperature from frozen to aid cooking?
• Microwaves use which type of energy sources?
• What legislative action can be taken to prevent the movement of harmful substances?
• What is the acceptable air quality level for lead exposure in a work environment?
• What infection are wastewater treatment workers particularly susceptible to?
• What is the term for bacteria that cannot grow in the presence of oxygen?
• Which unit is commonly used to quantify occupational radiation exposure?
• What is a key consideration when installing a well in relation to nearby structures?
• What is the biggest concern at a festival lasting more than three days?
• What is the typical home range distance for a Norway rat?
• By what percentage can external contamination of radiation be reduced by removing external clothing?
• Which agencies are involved in responding to bioterrorism attacks?
• What are the six primary air pollutants?
• Which of the following is NOT a characteristic of oligotrophic lakes?
• When addressing a vacant lot used for dumping, what is the first appropriate action for an REHS?
• What does 'misfeasance' mean?
• At what temperature should shell eggs be received?
• What does HACCP stand for?
• What system was modeled after the National Emergency Response plan?
• What are the four types of incinerators?
• What is scabies?
• Corrosive, reactive, ignitable, and toxic are properties of what?
• What should an ice machine dispose of into?
• What is a critical factor in hyperchlorinating after a fecal incident?
• When disinfecting water with unscented chlorine bleach, how many drops are needed per gallon?
• What defines hard water?
• What is the proper sequence for decontamination of a radioactive spill?
• Which of the following is least likely to cause disease?
• What is the extrinsic incubation period in the context of disease transmission?
• What is the appropriate level of cyanuric acid in a swimming pool?
• What is essential for effective emergency response in environmental health situations?
• Which of the following describes a key symptom of leptospirosis?
• Approximately how many people die each year due to waterborne diseases?
• Which of these tips promotes a contaminant-free home?
• What is the typical pH range for staphylococcus bacteria?
• Which of the following agents is primarily used to treat surfaces rather than skin?
• What items are categorized as biological safety equipment?
• In regards to pest management, what quality is encouraged for a healthy home?
• Which type of cockroach is commonly referred to as a water bug?
• What does the term 'nonfeasance' refer to in a legal context?
• What does MPNB stand for?
• Which of the following is most likely used for dechlorination in water treatment processes?
• What is the first step in initiating a community project related to environmental health?
• What is an essential component of providing public communication during emergencies?
• What is the primary cause of swimmer's itch?
• What method is used to achieve sanitization in a dish machine?
• What percentage of hospital beds worldwide are occupied by water-related diseases?
• What is a significant characteristic of ground beef spoilage?
• What is the thermal standard at 40% humidity with an air circulation rate of 45 fpm?
• How should unpasteurized eggs be properly heated for safety?
• What does the principle of multiple barriers aim to interrupt?
• How is 'malfeasance' defined?
• How many gallons per day do residential cesspool and septic tank soil absorption systems typically discharge?
• Which of the following is NOT a common water disinfectant?
• Prevailing winds are defined as those that...
• What is most likely to contaminate food?
• Which of the following defines a ratite?
• Which of the following is NOT a common method for controlling pest populations in food environments?
• Where may food service equipment be installed?
• What is the purpose of ICS?
• What type of food is considered comminuted?
• What is the definition of an injunction?
• Which animal is most likely to carry Hantavirus?
• What is the main purpose of maintaining operational controls in environmental health?
• Excessive humidity can lead to which of the following issues?
• Which pollutant is associated with damage to the nervous system?
• What is the purpose of leachate and methane wells in a landfill?
• Methemoglobinemia, a blood disorder, is primarily caused by which substance?
• Which system is considered the best for wastewater treatment in a small community?
• What does SSOPs stand for in environmental health standards?
• What are the acceptable methods for sludge disposal?
• Which bacteria is responsible for Legionnaires' disease?
• At what temperature is chlorine most effective according to COMAR?
• What is the primary function of pasteurization in food safety?
• What does nonfeasance refer to in a legal context?
• What are the outbreak times for food poisoning associated with chemical agents and bacteria?
• What is the main purpose of skimmers in a pool?
• What does the acronym NIOSH stand for?
• What type of bird falls under the classification of a ratite?
• Which organization is responsible for protecting waterways?
• At elevations below 5000 ft, what is the minimum time needed to boil water for disinfection?
• Which airflow from hospitals is considered least critical?
• When transferring food to a new container, what must be labeled on the new container?
• What is the recommended collection frequency for businesses?
• Which waste type tends to corrode materials, especially metals?
• How is toxicity defined in environmental health?
• How is the flu virus mainly transmitted?
• What is the primary purpose of using bleach in hospital laundry?
• Approximately how much air do humans breathe in a day?
• What is the typical temperature range for slacking frozen food?
• What is the correct priority order for conducting inspections?
• What is considered the most practical method of removing nitrates from water?
• Who is identified as the incident commander in emergency response situations?
• What primarily determines the strength of sewage?
• What sound level is considered unsafe for human exposure?
• What role can a Registered Environmental Health Specialist (REHS) play in preventing contamination with an ice machine?
• What is a primary reason traps are not considered legal in plumbing?
• In schools, which area should be specifically tested for radon levels?
• What is the minimum required distance between a water line and a sewer line in a trailer park?
• What is the function of a joist in construction?
• What characteristic should a healthy home ideally possess in terms of air quality?
• What is the main purpose of having an air gap in drainage systems?
• What can occur if the alkalinity in a pool is too low?
• What type of hazard does Clostridium botulinum represent in food safety?
• What is the recommended maximum concentration of lead in drinking water?
• What is the primary concern associated with a chlorine gas leak in public spaces?
• Which mosquito species is the leading cause of encephalitis cases in the US?
• Which foodborne illness is associated with sous vide foods?
• What are the three primary types of pollutants found in water?
• What are the four stages of an infected individual regarding disease progression?
• What does the term enzootic refer to?
• Why is it important to identify radon levels in homes?
• What article of the constitution protects nonpublic areas from unreasonable search and seizures?
• What is the main function of a high rate sand filter in pool maintenance?
• Which disease is commonly associated with being spread through wastewater?
• Who is responsible for regulating the use of proper respirators in workplaces?
• Which of the following is least likely to cause bites and itching in an urban setting?
• Which of the following describes anaerobic bacteria?
• Who are the primary stakeholders at a temporary food event?
• What does the unit 'Radiation Absorbed Dose' (rad) measure?
• Which distance is considered less critical in the context of environmental health?
• What are the three types of hazardous waste incinerators?
• What substance presence in water usually indicates fresh pollution?
• What might indicate the presence of contamination in ice beyond visible signs?
• Lead poisoning is commonly associated with children living in homes built before which year?
• What is a common control measure in sanitary landfills to manage environmental impact?
• What aspect of environmental health focuses on general maintenance and equipment design?
• What do NSF and USL primarily certify?
• Utensils that are in continuous use must be washed, rinsed, and sanitized every how many hours?
• When addressing the public during an emergency, what is crucial to maintain?
• Which animal should you avoid taking to school to prevent psittacosis?
• What is a key consequence of excessive condensation in buildings?
• What physical barrier can stop beta particles?
• Which of the following is NOT one of the seven tips for maintaining a healthy home?
• What entails regular reporting of disease data in passive health surveillance?
• What can happen when relative humidity exceeds 60%?
• What defines ignitability in hazardous waste?
• What effect does adding CO2 to a septic tank have?
• Which organization is not a recognized safety standard among the others?
• According to safety standards, what level of lead in blood is considered hazardous?
• What is the most prevalent type of cockroach found in the US?
• How much food does an adult rat consume daily?
• What type of environmental issue arises from excessive ozone levels?
• Which of the following are considered spore formers?
• What does the acronym ISO represent in relation to standards and specifications?
• What is the best method to minimize odors in a latrine or privy?
• Fast food facilities are known to create the most of which substance?
• What is a major concern related to food technology?
• What does RCRA stand for?
• What is the maximum allowable level of particle pollution in urban areas according to regulations?
• How should you properly cook custard pies?
• What is typically the outcome of exposure to indoor air pollutants like tobacco smoke and mold?
• What is described as a Health Impact Assessment (HIA)?
• How is Hepatitis A contracted?
• According to the Americans with Disabilities Act (ADA), what is the maximum slope allowable for ramps?
• What is the first step in managing a waterborne outbreak?
• How much water is typically recommended per person per day after a natural disaster?
• Which material would be least likely to contain asbestos?
• What can result from prolonged exposure to high levels of humidity?
• What are the four recognized uses of potable drinking water?
• What is onchocerciasis commonly known as?
• Which of the following is an example of a non-communicable disease?
• At what relative humidity do excessive condensation, corrosion, and mildew typically occur?
• What is the effect of adding CO2 to a septic tank?
• Who typically becomes the incident commander during emergencies?
• What does a chemical sanitizer do in food safety practices?
• What is the term 'night soil' colloquially referring to?
• Which group of bacteria contains the majority of pathogenic bacteria?
• How does beef spoil according to typical spoilage patterns?
• What type of pathogen can travel the furthest in a septic field?
• What is an example of a critical control point in food safety?
• Recycling effluent into a septic tank is classified as which type of treatment?
• Which type of ionizing radiation travels in tortuous paths through absorbing material?
• What method of sanitary landfill involves placing waste in layers from a significant depth?
• A family reports multiple bites and a rash. Which organism is least likely to be responsible?
• What term describes when a Registered Environmental Health Specialist (REHS) engages in unlawful activities in an unapproved manner?
• What is the primary cause of hot tub rash?
• What does passive health surveillance involve?
• What is the particle count typically found in urban areas?
• What is Halon 131 primarily used for?
• What is dichloroethylene commonly used for?
• What must be documented in a fecal incident log?
• What temperature is required during hyperchlorination to achieve crypto CT inactivation?
• Which of the following is not a concern with toxic wastes?
• What is the primary characteristic of the air gap used as a backflow prevention method?
• Which of the following is a common issue with canned food technology?
• Silicosis is primarily caused by exposure to which substance?
• True or False: Alpha particles are easily absorbable.
• How is E. coli O157:H7 primarily transmitted?
• During which seasons do rats typically breed in temperate zones?
• What is the pH range of secondary treatment effluent?
• What is the first step to take if you suspect multiple workers are experiencing symptoms of sick building syndrome?
• What provision did the Tenement Housing Act of 1867 include for sleeping rooms?
• What is the maximum temperature recommended for a spa?
• How often are emergency response plans for nuclear power reviewed?
• What is soda ash used for in pool water?
• If you discover mold in a room, what is the first step you should take?
• How can a priority foundation item be characterized?
• Which of the following is not a concern related to silicosis?
• For how many hours must a ham sandwich prepared by a caterer be discarded?
• Which bacterium is commonly used as an indicator for sterilization in an autoclave?
• Which agency is responsible for mobile homes?
• What is an embargo?
• Which organization is responsible for testing breathing apparatus?
• Which organism is responsible for causing amoebic dysentery?
• What is the primary concern when fluorides are present in animal feed?
• At what temperature should a pool chemical test kit be stored?
• What are the recommended holding temperatures to reduce foodborne illness for hot foods?
• What characterizes corrosivity in waste materials?
• What is included in the suitable temperature condition for hyperchlorination?
• When should a priority foundation violation be corrected?
• Which of the following is NOT required in a tattoo shop?
• What is the minimum required amount of sleeping area per person in the APHA appraisal method?
• What symbol represents the USDA inspection?
• What does 'Roentgen Equivalent Man' (REM) measure?
• Which of the following is a device used for backflow prevention?
• What is leptospirosis?
• What type of soil is considered ideal for onsite wastewater systems?
• What is not commonly found in effluent?
• What is sodium thiosulfate primarily used for?
• What legal consequence may a person face for violating health or quarantine laws?
• What is Food Net?
• What is the significance of monitoring sound levels in occupational health?
• In what pH range does Salmonella grow best?
• What concern arises when flooding occurs and a septic tank is not buried?
• What type of disorder does methemoglobinemia indicate?
• Which organization is responsible for creating noise standards?
• What is represented by the safe levels of chlorine for effective disinfection?
• What is defined as a priority item in the context of hazard control?
• What does the term 'Half-Value Layer' (HVL) refer to?
• How many inches of soil must be placed on a finished landfill?
• By how many millions of people is the global population increasing each year?
• What is one of the tips for ensuring a healthy home environment regarding maintenance?
• A depth to the water table of six inches generally requires which type of system?
• What property makes a waste reactive?
• What method is commonly used to filter out giardia lamblia?
• Dusts are typically formed by which mechanism?
• Is household hazardous waste exempt from RCRA regulations?
• How quickly can symptoms from chemical food poisoning appear?
• What can effectively block alpha particles?
• Who has the primary responsibility for an emergency response operation?
• What is red squill used for?
• If radon was a problem in your area, what room would be high risk?
• How can contamination in a block of ice be identified?
• According to the Tenement Housing Act of 1867, what was mandated for fire safety?
• Which method is effective for detecting a gas leak in the home?
• What do MCLs refer to in environmental health regulations?
• What is an antibacterial agent specifically used on skin tissue called?
• Are employers required to provide training regarding hazardous materials?
• Which of the following is a key requirement in food processing to ensure safety?
• Which agency is typically consulted for writing water policy?
• What is the proper action to take when you suspect a food contamination issue?
• What does due process ensure for individuals in the judicial system?
• Which situation is most likely to lead to contamination of a water supply?
• What is one example of a reactive waste?
• What is the purpose of MCLGs in relation to potable water standards?
• What is the purpose of the gap found in an ice machine?
• What type of separation is critical when discussing wastewater disposal?
• What is the biggest challenge in effectively communicating food inspection results?
• What type of topography is ideal for the trench method in a sanitary landfill?
• Institutions in environmental health are often considered as what?
• What is the recommended frequency for pumping a new septic tank?
• How is sound primarily produced?
• What types of pharmaceuticals are found in water treatment plants?
• A negative phosphatase test indicates what about pasteurization?
• What does the term 'ad valorem tax' refer to?
• How many gallons per day do residential cesspools and septic tank systems typically discharge?
• What is the solid waste collection frequency for residential areas during the summer?
• In composting, what is the last phase referred to as?
• Which of the following best describes a core item in environmental health?
• What causes spoilage in pork according to common patterns?
• At what temperature is chlorine most effective?
• Who is responsible for enforcing sound violations at mass gatherings?
• What characteristic terrain is typically associated with the area or ramp method of a sanitary landfill?
• What factor is NOT considered a priority in a food safety and health scenario?
• In an emergency priority scenario, which should be handled first?
• What is considered a proper emergency water treatment in a pool?
• What is the normal annual sludge accumulation for a home?
• Why is it essential to hire certified pest operators?
• What is the role of chlorine in water treatment?
• What is the primary aim of maintaining a dry home environment?
• What is the minimum separation required from the trench bottom or groundwater table?
• What is an appropriate method for disposal of an animal carcass?
• What percentage of its volume does a hydropneumatic tank typically contain in water?
• In a stratified reservoir, where is the best quality water typically found?
• During which of the following seasons are rodents more likely to seek shelter in urban areas?
• What is the primary purpose of a residual disinfectant in a water distribution system?
• What are the primary responsibilities of NIOSH?
• What is the primary concern regarding biohazard materials?
• What type of damage can fluorides cause in cattle?
• What is typically the main focus in managing an environmental health and safety (EHS) program?
• When must a priority violation be corrected during a food inspection?
• What does the Langelier index help determine?
• What stages are involved in the composting process?
• Which category of bacteria primarily includes Bacillus cereus?
• Which of the following poses a risk of psittacosis outbreaks?
• How is sick-building syndrome defined?
• What is the standard method for calibrating a thermometer?
• Under what moisture content in soil does bacteria activity cease?
• How should the drainline of an ice cream machine be connected ideally?
• In which environments are nosocomial infections most severe?
• Where are photochemical oxidants primarily produced?
• What is the recommended temperature range for sanitizing hospital laundry?
• How many tips for healthy housing are there?
• Quantifiable measures in food safety relate to which of the following?
• What is the effect of freezing a toxin?
• Which best describes the health risks associated with scabies?
• What are the estimated worldwide gastrointestinal illness rates?
• What is the formula for calculating pool turnover rate?
• When using the valley or ravine method in a sanitary landfill, how deep are the lifts typically placed?
• What type of septic system is recommended for use in rural communities?
• What best describes incineration as a waste management strategy?
• What is a recommended food supply to use after a national disaster?
• During conventional biological processes, nitrogen is primarily transformed into which compound?
• What type of respirator is needed in an environment with 15% oxygen?
• What is the explosive range of methane levels in landfills?
• In a refrigerator, where should iced fish be stored?
• What is slacking in food preparation?
• What does NIMS stand for in emergency management?
• What does the term shell stock refer to?
• What is the storage temperature range for cold foods to minimize the risk of foodborne illnesses?
• Which group is least likely to experience bites from parasites in an urban area?
• What are the three essential qualities that tattoo parlors must adhere to?
• What is the definition of a Roentgen?
• If you encounter a gasoline spill on the highway, what is the appropriate immediate action to take?