HAZWOPER FINAL EXAM 2025-2026 QUESTIONS
AND CORRECT ANSWERS
When should monitoring be conducted at a hazardous waste site? -
Correct Answer>> Upon initial entry to identify and IDLH conditions
Atmospheric monitoring is only required after the workers have
entered the site. - Correct Answer>> False
A change in weather will not affect the hazards at a work site. - Correct
Answer>> False
When locating a Command post, which of the following can have the
greatest impact on employee safety? - Correct
Answer>> Wind direction
The Site Health and Safety Plan should contain contingency plans for
unpredictable events such as fire or physical injury. - Correct Answer>>
True
After the plan for a hazardous waste site is implemented, it should be
periodically examined to reflect any site condition changes. - Correct
Answer>> True
The primary purpose of a site health and safety plan is which of the
following? - Correct Answer>> To ensure the safety and health of
workers and responders
Emergencies are not effected by which of the following? -
,Correct Answer>> Location of the laboratory
It is the responsibility of the personnel involved at the site to comply
with the requirements of the health and safety plan. - Correct
Answer>> True
The best policy is that instructions should be written. - Correct
Answer>> True
Identify the correct order that a site characterization should be
conducted; 1. Conduct an on-site survey, 2. Conduct an off-site survey,
3. Implement programs to ensure the safety of a hazardous waste
employee after an on-site evaluation. -
Correct Answer>> 2,1, 3
The results of air monitoring and sampling pertaining to an employee's
job___.! - Correct Answer>> Must be made available to the employee
A hazardous waste site plan should be ____ in order to make sure the
procedures will work in an emergency. - Correct
Answer>> Practiced
At a minimum, emergency response plans for handling and reporting
emergency incidents should include the following. Which one is the
most important when reporting an emergency due to a hazardous
chemical spill? - Correct Answer>> The chemicals and quantities
involved
Upon completion of a site characterization, an activity that is not
implemented is which of the following? - Correct Answer>>
Correct all instruments for elevation
,When determining if immediately dangerous to life or health
parameters are present in the workplace or an area, which of the
following is not the most important parameter to be monitored? -
Correct Answer>> Water quality
Using LD50 as the measure of toxicity, which chemical is the most toxic?
- Correct Answer>> Cyanide LD50 of 3 mg/kg
ACGIH defines Short-Term Exposure Limit (STEL) as a 15-minute TWA
exposure that should not be exceeded at any time during the workday
without the proper protective measures. A wastesite worker uses the
STEL to protect himself/herself by ____. - Correct Answer>> Realizing
low STEL values represent more toxic chemicals
An IDLH atmosphere is an atmosphere that poses an immediate threat
to life, would cause irreversible adverse health effects, or would impair
an individual's ability to escape from a dangerous atmosphere. - Correct
Answer>> True
Legally enforceable exposure levels are established by____. - Correct
Answer>> OSHA (Occupational Safety and Health
Administration)
TLV is an acronym for ____. - Correct Answer>> Threshold limit value
The most common route of entry for exposure to toxic materials in the
work place is?! - Correct Answer>> Inhalation
, Which of the factors listed, that affect the response of humans and
living organisms to toxic chemicals, is time dependent? - Correct
Answer>> Dose
Acute exposure symptoms may include which of the following?
- Correct Answer>> All answers are correct
. A toxic effect described as a severe injury by a one-time short
exposure to a harmful chemical is known as - Correct Answer>>
Acute
An additive effect is defined as which of the following? - Correct
Answer>> The addition of toxic chemical effects in producing a
biological effect
A Synergistic Effect is defined as which of the following? -
Correct Answer>> The exposure to two different toxic
chemicals that produces a more severe effect than simply doubling the
dose of wither one alone
A Potentiation Effect is defined as which of the following? - Correct
Answer>> In some cases, a chemical without any known toxic effect
may act together with a known toxic substance to make the toxic
substance even more potent and more dangerous
An Antagonism Effect is defined as which of the following? - Correct
Answer>> The interaction of two toxic chemicals may be such that the
effect produced is actually less than would be expected
Which of the following is common to airborne hazards? - Correct
Answer>> The normally enter the body through breathing
AND CORRECT ANSWERS
When should monitoring be conducted at a hazardous waste site? -
Correct Answer>> Upon initial entry to identify and IDLH conditions
Atmospheric monitoring is only required after the workers have
entered the site. - Correct Answer>> False
A change in weather will not affect the hazards at a work site. - Correct
Answer>> False
When locating a Command post, which of the following can have the
greatest impact on employee safety? - Correct
Answer>> Wind direction
The Site Health and Safety Plan should contain contingency plans for
unpredictable events such as fire or physical injury. - Correct Answer>>
True
After the plan for a hazardous waste site is implemented, it should be
periodically examined to reflect any site condition changes. - Correct
Answer>> True
The primary purpose of a site health and safety plan is which of the
following? - Correct Answer>> To ensure the safety and health of
workers and responders
Emergencies are not effected by which of the following? -
,Correct Answer>> Location of the laboratory
It is the responsibility of the personnel involved at the site to comply
with the requirements of the health and safety plan. - Correct
Answer>> True
The best policy is that instructions should be written. - Correct
Answer>> True
Identify the correct order that a site characterization should be
conducted; 1. Conduct an on-site survey, 2. Conduct an off-site survey,
3. Implement programs to ensure the safety of a hazardous waste
employee after an on-site evaluation. -
Correct Answer>> 2,1, 3
The results of air monitoring and sampling pertaining to an employee's
job___.! - Correct Answer>> Must be made available to the employee
A hazardous waste site plan should be ____ in order to make sure the
procedures will work in an emergency. - Correct
Answer>> Practiced
At a minimum, emergency response plans for handling and reporting
emergency incidents should include the following. Which one is the
most important when reporting an emergency due to a hazardous
chemical spill? - Correct Answer>> The chemicals and quantities
involved
Upon completion of a site characterization, an activity that is not
implemented is which of the following? - Correct Answer>>
Correct all instruments for elevation
,When determining if immediately dangerous to life or health
parameters are present in the workplace or an area, which of the
following is not the most important parameter to be monitored? -
Correct Answer>> Water quality
Using LD50 as the measure of toxicity, which chemical is the most toxic?
- Correct Answer>> Cyanide LD50 of 3 mg/kg
ACGIH defines Short-Term Exposure Limit (STEL) as a 15-minute TWA
exposure that should not be exceeded at any time during the workday
without the proper protective measures. A wastesite worker uses the
STEL to protect himself/herself by ____. - Correct Answer>> Realizing
low STEL values represent more toxic chemicals
An IDLH atmosphere is an atmosphere that poses an immediate threat
to life, would cause irreversible adverse health effects, or would impair
an individual's ability to escape from a dangerous atmosphere. - Correct
Answer>> True
Legally enforceable exposure levels are established by____. - Correct
Answer>> OSHA (Occupational Safety and Health
Administration)
TLV is an acronym for ____. - Correct Answer>> Threshold limit value
The most common route of entry for exposure to toxic materials in the
work place is?! - Correct Answer>> Inhalation
, Which of the factors listed, that affect the response of humans and
living organisms to toxic chemicals, is time dependent? - Correct
Answer>> Dose
Acute exposure symptoms may include which of the following?
- Correct Answer>> All answers are correct
. A toxic effect described as a severe injury by a one-time short
exposure to a harmful chemical is known as - Correct Answer>>
Acute
An additive effect is defined as which of the following? - Correct
Answer>> The addition of toxic chemical effects in producing a
biological effect
A Synergistic Effect is defined as which of the following? -
Correct Answer>> The exposure to two different toxic
chemicals that produces a more severe effect than simply doubling the
dose of wither one alone
A Potentiation Effect is defined as which of the following? - Correct
Answer>> In some cases, a chemical without any known toxic effect
may act together with a known toxic substance to make the toxic
substance even more potent and more dangerous
An Antagonism Effect is defined as which of the following? - Correct
Answer>> The interaction of two toxic chemicals may be such that the
effect produced is actually less than would be expected
Which of the following is common to airborne hazards? - Correct
Answer>> The normally enter the body through breathing
