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Cole’s EHS NEHA Exam Study Guide Questions With
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Complete Solution
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How do you filter out giardia lambia? - Rapid sand filtration
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Pharmaceuticals in water treatment plants are - Both solid and liquid
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Which mosquito is the highest cause of encephalitis in the US? - Culex
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What is it called when milk is heated to 191-212 - Pasteurization
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Order of priority: power outage at restaurant, chlorine gas leak at pool, no hand sink at
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food festival - Chlorine gas, power outage, no hand sink
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What is an antibacterial agent used on skin tissue called? - Antiseptic
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What is the most common cockroach in US? - German
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What type of cockroach is referred to as a water bug? - Either American or Oriental
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What is the minimum distance between a water line and a sewer line in a trailer park? - 10
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ft
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What is the slope for ramps determined by the Americans with Disabilities Act (ADA) - 1:12
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or less
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NSF and USL are organizations that - Certify food service equipment.
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What is the amount of soil you must put on a finished landfill - 24 inches
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What is most likely to carry Hantavirus? - Rodents
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Which is least likely to cause bites and itching in an urban setting - Ticks
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What does HACCP stand for? - Hazard Analysis and Critical Control Points
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Methemoglobinemia (a blood disorder) is caused by : - Nitrates
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Hazardous waste : CRIT - Corrosive, reactive, ignitable, toxic
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Organization that tests breathing apparatus - OSHA
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Who is the incident commander? - The person with jurisdiction, person responsible for all
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aspects of emergency response
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What is the calculation for pool turnover rate? - Turnover rate (hours)= pool volume
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(gallons) / flow rate (gallons per minute) x 60 (minutes per hour)
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Sous vide foods can lead to what foodborne illness? - Clostridium botulinum
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What can you use after a national disaster? - Canned goods
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Where do you store iced fish in the refrigerator? - Below ready to eat foods and above raw
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meats
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What is considered comminuted? - Hot dogs and hamburgers
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What is bacteria that cannot grow in oxygen called? - Anaerobic
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Which of these is different from the others? NSF, UL, ASNI, TLE - TLE
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Freezing a toxin will have what affect? - No affect
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True of false? Alpha particles are easily absorbable - True (easiest to absorb to hardest to
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absorb: gamma , beta, alpha),
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What can alpha particles be blocked by? - A sheet of paper (beta can pass through paper,
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stopped by aluminum. Gamma is difficult to stop, needs concrete or other heavy shielding
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What kind of respirator do you need in 15% oxygen - SCBA (self contained breathing
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apparatus
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Who regulates proper respirators? - OSHA (occupational safety and health administration)
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What is the gap in an ice machine for? - Air gap to prevent backflow contamination
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Giardia cyst concentration that causes disease - 500:1
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What mosquito carries malaria? - Anopheles
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What cockroach is most common in urban areas - German
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What was modeled after the National Emergency Response - NIMS (national incident
management system)
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The REHS did something that they knew was unlawful and they did it in an unapproved
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way - Malfeasance
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What role can REHS perform when helping with an ice machine to prevent contamination -
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Create a cleaning schedule
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There has been a flood and the septic tank has not been buried. What is a concern for
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pumping? - Floating of the tank
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Noscomial infections are most severe in - Hospitals
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Which airflow from hospitals is least critical? - Hallway to dirty laundry area
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What is NIMS? - National Incident Management System , a systematic proactive approach to
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guide departments and agencies at all levels of government
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What is ICS? - Incident Command System , a systematic tool for the command, control, and
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coordination of emergency response
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Depth to water table of six inches requires a - Sand mound
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Fast food facilities create the most - F.O.G (fats, oil, grease)
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Which bacteria does HACCP target? - Listeria monocytogenes
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Prevailing winds ... - Blow predominantly from a single direction over a particular point on
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earth's surface
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What is the first thing you do if you come across mold in a room? - Open a window
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What is the effect of adding co2 to a septic tank? - Lowers ph
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What disease is commonly spread through wastewater? - Hep A
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What guidance do you give a homeowner with a new septic tank? - Pump regularly
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What is the best system for a small community? - Rapid sand sh
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Nitrogen is transformed into what during conventional biological processes? - Ammonia
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and biological sludge
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A family complains of multiple bites and a rash. What is the least likely organism to cause
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it? - Tick
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There is a vacant lot that has been used for dumping of unwanted items. What is the correct
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action that REHS should perform? - Contact the owner and explain the public health
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dangers, including the harboring of rodents. Discuss measures to get the site cleaned up, as
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well as blocking the area/post no dumping signs
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During an emergency event, there is a worry about a hanta virus outbreak. What
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educational measures should be put into place to help the public - How to prevent rodents
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