COLORADO ENVIRONMENTAL SITE ASSESSMENT
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a Phase I Environmental
Site Assessment (ESA)?
A. To collect soil and groundwater samples
B. To determine the exact level of contamination
C. To identify potential or existing environmental
contamination liabilities
D. To design a remediation plan
Rationale: Phase I ESA is a preliminary review using records,
site inspection, and interviews to identify potential
contamination risks.
Correct Answer: C
2. Which standard is most commonly used to guide Phase I
ESA procedures in the United States?
A. OSHA 1910 standards
B. ASTM E1527 standard
C. EPA Clean Water Act Section 404
D. CERCLA Section 103
,Rationale: ASTM E1527 defines the standard practice for Phase
I ESAs.
Correct Answer: B
3. A Recognized Environmental Condition (REC) refers to:
A. Clean soil conditions confirmed by lab testing
B. Presence of endangered species on-site
C. Presence or likely presence of hazardous substances due to
release
D. A completed remediation site
Rationale: REC identifies potential contamination from
hazardous substances or petroleum products.
Correct Answer: C
4. Which of the following is NOT typically part of a Phase I
ESA?
A. Site reconnaissance
B. Historical records review
C. Soil sampling and laboratory analysis
D. Interviews with current property owners
Rationale: Phase I does not include physical sampling; that is
Phase II.
Correct Answer: C
,5. The Comprehensive Environmental Response,
Compensation, and Liability Act (CERCLA) is also known as:
A. Superfund law
B. Clean Air Act
C. Resource Conservation Act
D. Safe Drinking Water Act
Rationale: CERCLA is commonly referred to as Superfund.
Correct Answer: A
6. What is the main goal of a Phase II ESA?
A. Historical land use review
B. Soil and groundwater testing to confirm contamination
C. Property valuation
D. Legal property transfer
Rationale: Phase II involves sampling to confirm suspected
contamination.
Correct Answer: B
7. Which agency primarily oversees environmental protection
regulations in the U.S.?
A. FEMA
B. EPA
C. OSHA
D. CDC
, Rationale: The Environmental Protection Agency (EPA) enforces
environmental laws.
Correct Answer: B
8. What is a “Historical Recognized Environmental Condition”
(HREC)?
A. A current spill event
B. A past contamination that has been properly remediated
C. A future risk prediction
D. A natural geological condition
Rationale: HREC refers to past contamination that has been
cleaned up to regulatory standards.
Correct Answer: B
9. Which document is commonly reviewed to assess past land
use?
A. Tax returns
B. Aerial photographs and fire insurance maps
C. Employee payroll records
D. Utility bills only
Rationale: Historical maps and aerial photos help identify prior
uses of a property.
Correct Answer: B
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a Phase I Environmental
Site Assessment (ESA)?
A. To collect soil and groundwater samples
B. To determine the exact level of contamination
C. To identify potential or existing environmental
contamination liabilities
D. To design a remediation plan
Rationale: Phase I ESA is a preliminary review using records,
site inspection, and interviews to identify potential
contamination risks.
Correct Answer: C
2. Which standard is most commonly used to guide Phase I
ESA procedures in the United States?
A. OSHA 1910 standards
B. ASTM E1527 standard
C. EPA Clean Water Act Section 404
D. CERCLA Section 103
,Rationale: ASTM E1527 defines the standard practice for Phase
I ESAs.
Correct Answer: B
3. A Recognized Environmental Condition (REC) refers to:
A. Clean soil conditions confirmed by lab testing
B. Presence of endangered species on-site
C. Presence or likely presence of hazardous substances due to
release
D. A completed remediation site
Rationale: REC identifies potential contamination from
hazardous substances or petroleum products.
Correct Answer: C
4. Which of the following is NOT typically part of a Phase I
ESA?
A. Site reconnaissance
B. Historical records review
C. Soil sampling and laboratory analysis
D. Interviews with current property owners
Rationale: Phase I does not include physical sampling; that is
Phase II.
Correct Answer: C
,5. The Comprehensive Environmental Response,
Compensation, and Liability Act (CERCLA) is also known as:
A. Superfund law
B. Clean Air Act
C. Resource Conservation Act
D. Safe Drinking Water Act
Rationale: CERCLA is commonly referred to as Superfund.
Correct Answer: A
6. What is the main goal of a Phase II ESA?
A. Historical land use review
B. Soil and groundwater testing to confirm contamination
C. Property valuation
D. Legal property transfer
Rationale: Phase II involves sampling to confirm suspected
contamination.
Correct Answer: B
7. Which agency primarily oversees environmental protection
regulations in the U.S.?
A. FEMA
B. EPA
C. OSHA
D. CDC
, Rationale: The Environmental Protection Agency (EPA) enforces
environmental laws.
Correct Answer: B
8. What is a “Historical Recognized Environmental Condition”
(HREC)?
A. A current spill event
B. A past contamination that has been properly remediated
C. A future risk prediction
D. A natural geological condition
Rationale: HREC refers to past contamination that has been
cleaned up to regulatory standards.
Correct Answer: B
9. Which document is commonly reviewed to assess past land
use?
A. Tax returns
B. Aerial photographs and fire insurance maps
C. Employee payroll records
D. Utility bills only
Rationale: Historical maps and aerial photos help identify prior
uses of a property.
Correct Answer: B
