TEXAS ENVIRONMENTAL HEALTH AND
SAFETY SPECIALIST CERTIFICATION EXAM
WITH ACTUAL QUESTIONS AND VERIFIED
ANSWERS, PLUS EXPLAINED
RATIONALES/EXPERT VERIFIED FOR
GUARANTEED 100% PASS 2026/LATEST
UPDATE/INSTANT DOWNLOAD PDF
1. A Texas Environmental Health and Safety (EHS) Specialist is
asked to develop a hierarchy of controls strategy for reducing
employee exposure to airborne crystalline silica during concrete
cutting. Which control should be implemented first according to
the hierarchy of controls?
A. Provide N95 respirators to all workers
B. Rotate workers every two hours
C. Replace dry cutting with wet cutting technology
D. Conduct annual medical surveillance only
Answer: C. Replace dry cutting with wet cutting technology
Rationale: The hierarchy of controls prioritizes elimination,
substitution, engineering controls, administrative controls, and finally
PPE. Wet cutting is an engineering control that significantly reduces
airborne silica generation before workers are exposed. Respirators are
the least preferred control because they rely on individual compliance
and proper fit.
1
, 2. During a confined space evaluation, atmospheric testing reveals
oxygen at 18.7%, combustible gases at 3% of the Lower Explosive
Limit (LEL), and hydrogen sulfide at 5 ppm. What is the most
significant concern?
A. Hydrogen sulfide concentration
B. Oxygen-deficient atmosphere
C. Combustible atmosphere
D. Carbon monoxide poisoning
Answer: B. Oxygen-deficient atmosphere
Rationale: Normal atmospheric oxygen ranges from approximately
20.9%. An oxygen concentration below 19.5% is considered oxygen
deficient and immediately requires corrective measures before entry.
Hydrogen sulfide at 5 ppm remains below many occupational exposure
limits, and 3% LEL does not indicate an explosive atmosphere.
3. Which document should be reviewed first when identifying
chemical hazards introduced into a manufacturing facility?
A. Employee handbook
B. Standard operating procedures
C. Safety Data Sheet (SDS)
D. Equipment maintenance log
Answer: C. Safety Data Sheet (SDS)
Rationale: The SDS contains standardized hazard identification,
exposure controls, first aid measures, storage requirements, physical
properties, and emergency response information. It serves as the
primary source for chemical hazard evaluation.
2
, 4. An employee complains of headaches and dizziness while working
inside an enclosed warehouse with propane-powered forklifts.
Which contaminant should the EHS specialist suspect first?
A. Nitrogen
B. Carbon monoxide
C. Ozone
D. Sulfur dioxide
Answer: B. Carbon monoxide
Rationale: Propane combustion can produce carbon monoxide,
particularly in poorly ventilated areas. Carbon monoxide is colorless
and odorless, binds to hemoglobin with high affinity, and commonly
produces headache, dizziness, fatigue, and confusion.
5. Which sampling method provides the most accurate assessment of
an individual employee's inhalation exposure?
A. Area monitoring
B. Personal breathing zone sampling
C. Surface wipe sampling
D. Bulk material analysis
Answer: B. Personal breathing zone sampling
Rationale: Personal breathing zone sampling measures contaminants
within approximately 10 inches of the worker's nose and mouth,
providing the most representative estimate of actual inhalation
exposure.
3
, 6. An industrial hygienist measures workplace noise exposure
averaging 92 dBA over an 8-hour shift. What action is most
appropriate?
A. No action required
B. Hearing conservation program implementation
C. Only annual audiograms
D. Reduce work shifts to six hours
Answer: B. Hearing conservation program implementation
Rationale: An 8-hour TWA of 85 dBA or greater requires
implementation of a hearing conservation program, including
monitoring, audiometric testing, hearing protection, employee training,
and recordkeeping. A TWA of 92 dBA exceeds both the action level and
permissible exposure limit.
7. Which fire extinguisher is most appropriate for energized electrical
equipment?
A. Class A
B. Class B
C. Class C
D. Class K
Answer: C. Class C
Rationale: Class C extinguishers are specifically designed for energized
electrical equipment using nonconductive extinguishing agents,
minimizing electrical shock hazards.
4
SAFETY SPECIALIST CERTIFICATION EXAM
WITH ACTUAL QUESTIONS AND VERIFIED
ANSWERS, PLUS EXPLAINED
RATIONALES/EXPERT VERIFIED FOR
GUARANTEED 100% PASS 2026/LATEST
UPDATE/INSTANT DOWNLOAD PDF
1. A Texas Environmental Health and Safety (EHS) Specialist is
asked to develop a hierarchy of controls strategy for reducing
employee exposure to airborne crystalline silica during concrete
cutting. Which control should be implemented first according to
the hierarchy of controls?
A. Provide N95 respirators to all workers
B. Rotate workers every two hours
C. Replace dry cutting with wet cutting technology
D. Conduct annual medical surveillance only
Answer: C. Replace dry cutting with wet cutting technology
Rationale: The hierarchy of controls prioritizes elimination,
substitution, engineering controls, administrative controls, and finally
PPE. Wet cutting is an engineering control that significantly reduces
airborne silica generation before workers are exposed. Respirators are
the least preferred control because they rely on individual compliance
and proper fit.
1
, 2. During a confined space evaluation, atmospheric testing reveals
oxygen at 18.7%, combustible gases at 3% of the Lower Explosive
Limit (LEL), and hydrogen sulfide at 5 ppm. What is the most
significant concern?
A. Hydrogen sulfide concentration
B. Oxygen-deficient atmosphere
C. Combustible atmosphere
D. Carbon monoxide poisoning
Answer: B. Oxygen-deficient atmosphere
Rationale: Normal atmospheric oxygen ranges from approximately
20.9%. An oxygen concentration below 19.5% is considered oxygen
deficient and immediately requires corrective measures before entry.
Hydrogen sulfide at 5 ppm remains below many occupational exposure
limits, and 3% LEL does not indicate an explosive atmosphere.
3. Which document should be reviewed first when identifying
chemical hazards introduced into a manufacturing facility?
A. Employee handbook
B. Standard operating procedures
C. Safety Data Sheet (SDS)
D. Equipment maintenance log
Answer: C. Safety Data Sheet (SDS)
Rationale: The SDS contains standardized hazard identification,
exposure controls, first aid measures, storage requirements, physical
properties, and emergency response information. It serves as the
primary source for chemical hazard evaluation.
2
, 4. An employee complains of headaches and dizziness while working
inside an enclosed warehouse with propane-powered forklifts.
Which contaminant should the EHS specialist suspect first?
A. Nitrogen
B. Carbon monoxide
C. Ozone
D. Sulfur dioxide
Answer: B. Carbon monoxide
Rationale: Propane combustion can produce carbon monoxide,
particularly in poorly ventilated areas. Carbon monoxide is colorless
and odorless, binds to hemoglobin with high affinity, and commonly
produces headache, dizziness, fatigue, and confusion.
5. Which sampling method provides the most accurate assessment of
an individual employee's inhalation exposure?
A. Area monitoring
B. Personal breathing zone sampling
C. Surface wipe sampling
D. Bulk material analysis
Answer: B. Personal breathing zone sampling
Rationale: Personal breathing zone sampling measures contaminants
within approximately 10 inches of the worker's nose and mouth,
providing the most representative estimate of actual inhalation
exposure.
3
, 6. An industrial hygienist measures workplace noise exposure
averaging 92 dBA over an 8-hour shift. What action is most
appropriate?
A. No action required
B. Hearing conservation program implementation
C. Only annual audiograms
D. Reduce work shifts to six hours
Answer: B. Hearing conservation program implementation
Rationale: An 8-hour TWA of 85 dBA or greater requires
implementation of a hearing conservation program, including
monitoring, audiometric testing, hearing protection, employee training,
and recordkeeping. A TWA of 92 dBA exceeds both the action level and
permissible exposure limit.
7. Which fire extinguisher is most appropriate for energized electrical
equipment?
A. Class A
B. Class B
C. Class C
D. Class K
Answer: C. Class C
Rationale: Class C extinguishers are specifically designed for energized
electrical equipment using nonconductive extinguishing agents,
minimizing electrical shock hazards.
4
