Cole's EHS NEHA Exam Study Guide
Questions with Actual Detailed
Answers 2025-2026 Updated.
How do you filter out giardia lambia? - Answer Rapid sand filtration
Pharmaceuticals in water treatment plants are - Answer Both solid and liquid
Which mosquito is the highest cause of encephalitis in the US? - Answer Culex
What is it called when milk is heated to 191-212 - Answer Pasteurization
Order of priority: power outage at restaurant, chlorine gas leak at pool, no hand sink at food
festival - Answer Chlorine gas, power outage, no hand sink
What is an antibacterial agent used on skin tissue called ? - Answer Antiseptic
What is the most common cockroach in US? - Answer German
What type of cockroach is referred to as a water bug? - Answer Either American or Oriental
What is the minimum distance between a water line and a sewer line in a trailer park? - Answer
10 ft
What is the slope for ramps determined by the Americans with Disabilities Act (ADA) - Answer
1:12 or less
NSF and USL are organizations that - Answer Certify food service equipment.
What is the amount of soil you must put on a finished landfill - Answer 24 inches
What is most likely to carry Hantavirus? - Answer Rodents
Which is least likely to cause bites and itching in an urban setting - Answer Ticks
,What does HACCP stand for? - Answer Hazard Analysis and Critical Control Points
Methemoglobinemia (a blood disorder) is caused by : - Answer Nitrates
Hazardous waste : CRIT - Answer Corrosive, reactive, ignitable, toxic
Organization that tests breathing apparatus - Answer OSHA
Who is the incident commander? - Answer The person with jurisdiction, person responsible
for all aspects of emergency response
What is the calculation for pool turnover rate? - Answer Turnover rate (hours)= pool volume
(gallons) / flow rate (gallons per minute) x 60 (minutes per hour)
Sous vide foods can lead to what foodborne illness? - Answer Clostridium botulinum
What can you use after a national disaster? - Answer Canned goods
Where do you store iced fish in the refrigerator? - Answer Below ready to eat foods and
above raw meats
What is considered comminuted? - Answer Hot dogs and hamburgers
What is bacteria that cannot grow in oxygen called? - Answer Anaerobic
Which of these is different from the others? NSF, UL, ASNI, TLE - Answer TLE
Freezing a toxin will have what affect? - Answer No affect
True of false? Alpha particles are easily absorbable - Answer True (easiest to absorb to
hardest to absorb: gamma , beta, alpha),
What can alpha particles be blocked by? - Answer A sheet of paper (beta can pass through
paper, stopped by aluminum. Gamma is difficult to stop, needs concrete or other heavy
shielding
, What kind of respirator do you need in 15% oxygen - Answer SCBA (self contained breathing
apparatus
Who regulates proper respirators? - Answer OSHA (occupational safety and health
administration)
What is the gap in an ice machine for? - Answer Air gap to prevent backflow contamination
Giardia cyst concentration that causes disease - Answer 500:1
What mosquito carries malaria? - Answer Anopheles
What cockroach is most common in urban areas - Answer German
What was modeled after the National Emergency Response - Answer NIMS (national
incident management system)
The REHS did something that they knew was unlawful and they did it in an unapproved way -
Answer Malfeasance
What role can REHS perform when helping with an ice machine to prevent contamination -
Answer Create a cleaning schedule
There has been a flood and the septic tank has not been buried. What is a concern for
pumping? - Answer Floating of the tank
Noscomial infections are most severe in - Answer Hospitals
Which airflow from hospitals is least critical? - Answer Hallway to dirty laundry area
What is NIMS? - Answer National Incident Management System , a systematic proactive
approach to guide departments and agencies at all levels of government
What is ICS? - Answer Incident Command System , a systematic tool for the command,
control, and coordination of emergency response
Depth to water table of six inches requires a - Answer Sand mound
Questions with Actual Detailed
Answers 2025-2026 Updated.
How do you filter out giardia lambia? - Answer Rapid sand filtration
Pharmaceuticals in water treatment plants are - Answer Both solid and liquid
Which mosquito is the highest cause of encephalitis in the US? - Answer Culex
What is it called when milk is heated to 191-212 - Answer Pasteurization
Order of priority: power outage at restaurant, chlorine gas leak at pool, no hand sink at food
festival - Answer Chlorine gas, power outage, no hand sink
What is an antibacterial agent used on skin tissue called ? - Answer Antiseptic
What is the most common cockroach in US? - Answer German
What type of cockroach is referred to as a water bug? - Answer Either American or Oriental
What is the minimum distance between a water line and a sewer line in a trailer park? - Answer
10 ft
What is the slope for ramps determined by the Americans with Disabilities Act (ADA) - Answer
1:12 or less
NSF and USL are organizations that - Answer Certify food service equipment.
What is the amount of soil you must put on a finished landfill - Answer 24 inches
What is most likely to carry Hantavirus? - Answer Rodents
Which is least likely to cause bites and itching in an urban setting - Answer Ticks
,What does HACCP stand for? - Answer Hazard Analysis and Critical Control Points
Methemoglobinemia (a blood disorder) is caused by : - Answer Nitrates
Hazardous waste : CRIT - Answer Corrosive, reactive, ignitable, toxic
Organization that tests breathing apparatus - Answer OSHA
Who is the incident commander? - Answer The person with jurisdiction, person responsible
for all aspects of emergency response
What is the calculation for pool turnover rate? - Answer Turnover rate (hours)= pool volume
(gallons) / flow rate (gallons per minute) x 60 (minutes per hour)
Sous vide foods can lead to what foodborne illness? - Answer Clostridium botulinum
What can you use after a national disaster? - Answer Canned goods
Where do you store iced fish in the refrigerator? - Answer Below ready to eat foods and
above raw meats
What is considered comminuted? - Answer Hot dogs and hamburgers
What is bacteria that cannot grow in oxygen called? - Answer Anaerobic
Which of these is different from the others? NSF, UL, ASNI, TLE - Answer TLE
Freezing a toxin will have what affect? - Answer No affect
True of false? Alpha particles are easily absorbable - Answer True (easiest to absorb to
hardest to absorb: gamma , beta, alpha),
What can alpha particles be blocked by? - Answer A sheet of paper (beta can pass through
paper, stopped by aluminum. Gamma is difficult to stop, needs concrete or other heavy
shielding
, What kind of respirator do you need in 15% oxygen - Answer SCBA (self contained breathing
apparatus
Who regulates proper respirators? - Answer OSHA (occupational safety and health
administration)
What is the gap in an ice machine for? - Answer Air gap to prevent backflow contamination
Giardia cyst concentration that causes disease - Answer 500:1
What mosquito carries malaria? - Answer Anopheles
What cockroach is most common in urban areas - Answer German
What was modeled after the National Emergency Response - Answer NIMS (national
incident management system)
The REHS did something that they knew was unlawful and they did it in an unapproved way -
Answer Malfeasance
What role can REHS perform when helping with an ice machine to prevent contamination -
Answer Create a cleaning schedule
There has been a flood and the septic tank has not been buried. What is a concern for
pumping? - Answer Floating of the tank
Noscomial infections are most severe in - Answer Hospitals
Which airflow from hospitals is least critical? - Answer Hallway to dirty laundry area
What is NIMS? - Answer National Incident Management System , a systematic proactive
approach to guide departments and agencies at all levels of government
What is ICS? - Answer Incident Command System , a systematic tool for the command,
control, and coordination of emergency response
Depth to water table of six inches requires a - Answer Sand mound
