ANSI/IICRC S900 Professional Remediation of
Precursors, Drug Residues & Associated Chemical
Waste – IICRC S900 Study Guide, Original Practice
Questions & Answers, Exam Preparation,
Comprehensive Remediation Review, Site
Characterization, Contamination Assessment,
Safety, Risk Management, Cleaning, Equipment,
Structural Remediation, Contents, Waste Disposal &
Post-Remediation Verification
Question 1: According to the ANSI/IICRC S900 Standard, what is the primary
assumption that must be met before a practitioner begins remediation work on
a site?
A. The site must be completely devoid of all furniture and personal belongings.
B. The site must have been released by law enforcement or regulatory agencies.
C. The site must have a valid certificate of occupancy from the local building
department.
D. The site must have been previously tested and found free of all chemical residues.
CORRECT ANSWER: B. The site must have been released by law enforcement
or regulatory agencies.
Rationale: The S900 Standard explicitly states that it assumes all scenes have been
released by law enforcement or regulatory agencies before remediation activities
commence. This is a critical safety and legal prerequisite to ensure that the site is safe
for workers to enter from a security standpoint and that the chain of custody for any
evidence has been properly maintained .
Question 2: What is the term used in the ANSI/IICRC S900 Standard to
describe a person who, by possession of a recognized degree, certificate, or
professional standing, has demonstrated the ability to solve problems relating
to the project?
A. Competent Person
B. Practitioner
C. Qualified Person
D. Materially Interested Party
CORRECT ANSWER: C. Qualified Person
Rationale: The S900 Standard defines a "Qualified Person" as someone who, by
possession of a recognized degree, certificate, or professional standing, or by extensive
knowledge, training, and experience, has successfully demonstrated their ability to solve
or resolve problems relating to the subject matter, the work, or the project .
,Question 3: The ANSI/IICRC S900 Standard introduces a classification system
based on potential risk. Which Exposure Level (EL) is associated with Fentanyl
and Carfentanil manufacturing and distribution sites?
A. EL-1 (Low Risk)
B. EL-2 (Moderate Risk)
C. EL-3 (High Risk)
D. EL-4 (Extreme Risk)
CORRECT ANSWER: D. EL-4 (Extreme Risk)
Rationale: The Exposure Level (EL) system is a key component of the S900 Standard,
designed to categorize risk and drive remediation procedures. EL-4 is specifically
designated for "Extreme Risk" sites, which include those associated with fentanyl and
carfentanil manufacturing and distribution .
Question 4: What is the specific term used in the S900 Standard for an internal
quality assurance inspection performed by the practitioner after a
decontamination project to confirm the return to a pre-determined condition?
A. Post-remediation verification (PRV)
B. Post-remediation evaluation (PRE)
C. Final clearance testing
D. Site characterization
CORRECT ANSWER: B. Post-remediation evaluation (PRE)
Rationale: The Standard differentiates between a "Post-remediation evaluation (PRE)"
and a "Post-remediation verification/validation (PRV)". A PRE is an internal quality
assurance inspection performed by the practitioner, whereas a PRV is an independent
third-party assessment .
Question 5: Which of the following best defines the "Warm Zone" in the work
zone structure established by the ANSI/IICRC S900 Standard?
A. The clean area used for staging equipment and medical monitoring.
B. The area where contamination is present and appropriate PPE is required.
C. The contamination control area, including decontamination corridors.
D. The area designated solely for the storage of personal belongings.
CORRECT ANSWER: C. The contamination control area, including
decontamination corridors.
Rationale: The S900 Standard establishes distinct work zones to limit the spread of
contamination. The Warm Zone is the contamination reduction corridor, serving as the
area for decontamination procedures and where practitioners enter and exit the
exclusion zone .
Question 6: According to the S900 Standard, what is a "Precursor"?
,A. A substance that is the end-product of a chemical reaction.
B. A compound that participates in a chemical reaction that produces another
compound.
C. Any material that poses a threat to human health.
D. A cleaning agent used in the remediation process.
CORRECT ANSWER: B. A compound that participates in a chemical reaction
that produces another compound.
Rationale: The S900 Standard provides a specific definition for "Precursor": a compound
that participates in a chemical reaction that produces another compound. This is a
fundamental concept for understanding the contaminants involved in these types of
remediation projects .
Question 7: What is the primary purpose of the ANSI/IICRC S900 Standard?
A. To provide a step-by-step procedural manual for all remediation projects.
B. To define criteria and methodology for inspecting, investigating, and remediating sites
contaminated by precursors and drug residues.
C. To serve as a legal document for prosecuting illegal drug manufacturers.
D. To outline the procedures for first responders at an active drug laboratory.
CORRECT ANSWER: B. To define criteria and methodology for inspecting,
investigating, and remediating sites contaminated by precursors and drug
residues.
Rationale: The purpose of the S900 Standard is to define the criteria and methodology
used by a practitioner for inspecting and investigating chemical contamination and for
establishing work plans and procedures to make the site suitable for occupancy. It is a
performance standard, not a step-by-step manual .
Question 8: Which of the following is NOT listed as a primary subject matter
area within the ANSI/IICRC S900 Standard?
A. Principles of precursors, drug residues, and associated chemical waste cleanup
B. Safety and health
C. Business management and marketing strategies
D. Verification of cleaning
CORRECT ANSWER: C. Business management and marketing strategies
Rationale: The S900 Standard covers technical and safety-related subject matter,
including principles of cleanup, safety and health, inspection, levels of contamination,
remediation technologies, and verification of cleaning. Business management and
marketing strategies are not within the scope of this standard .
Question 9: The standard defines a "Competent Person" as someone who is
capable of identifying hazards and has the authority to take corrective
measures. What additional requirement must a competent person meet?
, A. They must have a master's degree in chemistry.
B. They must be licensed by the state as a general contractor.
C. They must be knowledgeable of applicable standards and capable of identifying
workplace hazards relating to the specific operation.
D. They must have been on the project from its inception.
CORRECT ANSWER: C. They must be knowledgeable of applicable standards
and capable of identifying workplace hazards relating to the specific
operation.
Rationale: A "Competent Person" is one who is capable of identifying existing and
predictable hazards and has authorization to take prompt corrective measures. By way
of training and/or experience, a competent person is knowledgeable of applicable
standards, is capable of identifying workplace hazards relating to the specific operation,
and has the authority to correct them .
Question 10: What is the significance of ANSI approval for the IICRC S900
Standard?
A. It makes the standard legally enforceable in all 50 states.
B. It confirms the standard was developed through a balanced, consensus-based
process.
C. It allows IICRC to charge a higher price for the document.
D. It indicates that the standard is primarily for use by government agencies.
CORRECT ANSWER: B. It confirms the standard was developed through a
balanced, consensus-based process.
Rationale: ANSI approval confirms that the S900 Standard was developed through a
balanced, consensus-based process incorporating input from restoration professionals,
industrial hygienists, public health experts, regulators, and other stakeholders. This
designation establishes it as a national benchmark .
Question 11: According to the S900 Standard, what is the role of "Materially
Interested Parties (MIPs)"?
A. They are individuals directly responsible for performing the physical cleaning.
B. They are individuals or entities substantially and directly affected by a contract.
C. They are the regulatory authorities who enforce the standard.
D. They are the primary suppliers of PPE for the remediation project.
CORRECT ANSWER: B. They are individuals or entities substantially and
directly affected by a contract.
Rationale: The S900 Standard defines Materially Interested Parties (MIPs) as an
individual or entity substantially and directly affected by a contract. This includes
consumers, occupants, property owners and managers, government, and regulatory
bodies, as well as consultants and adjusters .
Precursors, Drug Residues & Associated Chemical
Waste – IICRC S900 Study Guide, Original Practice
Questions & Answers, Exam Preparation,
Comprehensive Remediation Review, Site
Characterization, Contamination Assessment,
Safety, Risk Management, Cleaning, Equipment,
Structural Remediation, Contents, Waste Disposal &
Post-Remediation Verification
Question 1: According to the ANSI/IICRC S900 Standard, what is the primary
assumption that must be met before a practitioner begins remediation work on
a site?
A. The site must be completely devoid of all furniture and personal belongings.
B. The site must have been released by law enforcement or regulatory agencies.
C. The site must have a valid certificate of occupancy from the local building
department.
D. The site must have been previously tested and found free of all chemical residues.
CORRECT ANSWER: B. The site must have been released by law enforcement
or regulatory agencies.
Rationale: The S900 Standard explicitly states that it assumes all scenes have been
released by law enforcement or regulatory agencies before remediation activities
commence. This is a critical safety and legal prerequisite to ensure that the site is safe
for workers to enter from a security standpoint and that the chain of custody for any
evidence has been properly maintained .
Question 2: What is the term used in the ANSI/IICRC S900 Standard to
describe a person who, by possession of a recognized degree, certificate, or
professional standing, has demonstrated the ability to solve problems relating
to the project?
A. Competent Person
B. Practitioner
C. Qualified Person
D. Materially Interested Party
CORRECT ANSWER: C. Qualified Person
Rationale: The S900 Standard defines a "Qualified Person" as someone who, by
possession of a recognized degree, certificate, or professional standing, or by extensive
knowledge, training, and experience, has successfully demonstrated their ability to solve
or resolve problems relating to the subject matter, the work, or the project .
,Question 3: The ANSI/IICRC S900 Standard introduces a classification system
based on potential risk. Which Exposure Level (EL) is associated with Fentanyl
and Carfentanil manufacturing and distribution sites?
A. EL-1 (Low Risk)
B. EL-2 (Moderate Risk)
C. EL-3 (High Risk)
D. EL-4 (Extreme Risk)
CORRECT ANSWER: D. EL-4 (Extreme Risk)
Rationale: The Exposure Level (EL) system is a key component of the S900 Standard,
designed to categorize risk and drive remediation procedures. EL-4 is specifically
designated for "Extreme Risk" sites, which include those associated with fentanyl and
carfentanil manufacturing and distribution .
Question 4: What is the specific term used in the S900 Standard for an internal
quality assurance inspection performed by the practitioner after a
decontamination project to confirm the return to a pre-determined condition?
A. Post-remediation verification (PRV)
B. Post-remediation evaluation (PRE)
C. Final clearance testing
D. Site characterization
CORRECT ANSWER: B. Post-remediation evaluation (PRE)
Rationale: The Standard differentiates between a "Post-remediation evaluation (PRE)"
and a "Post-remediation verification/validation (PRV)". A PRE is an internal quality
assurance inspection performed by the practitioner, whereas a PRV is an independent
third-party assessment .
Question 5: Which of the following best defines the "Warm Zone" in the work
zone structure established by the ANSI/IICRC S900 Standard?
A. The clean area used for staging equipment and medical monitoring.
B. The area where contamination is present and appropriate PPE is required.
C. The contamination control area, including decontamination corridors.
D. The area designated solely for the storage of personal belongings.
CORRECT ANSWER: C. The contamination control area, including
decontamination corridors.
Rationale: The S900 Standard establishes distinct work zones to limit the spread of
contamination. The Warm Zone is the contamination reduction corridor, serving as the
area for decontamination procedures and where practitioners enter and exit the
exclusion zone .
Question 6: According to the S900 Standard, what is a "Precursor"?
,A. A substance that is the end-product of a chemical reaction.
B. A compound that participates in a chemical reaction that produces another
compound.
C. Any material that poses a threat to human health.
D. A cleaning agent used in the remediation process.
CORRECT ANSWER: B. A compound that participates in a chemical reaction
that produces another compound.
Rationale: The S900 Standard provides a specific definition for "Precursor": a compound
that participates in a chemical reaction that produces another compound. This is a
fundamental concept for understanding the contaminants involved in these types of
remediation projects .
Question 7: What is the primary purpose of the ANSI/IICRC S900 Standard?
A. To provide a step-by-step procedural manual for all remediation projects.
B. To define criteria and methodology for inspecting, investigating, and remediating sites
contaminated by precursors and drug residues.
C. To serve as a legal document for prosecuting illegal drug manufacturers.
D. To outline the procedures for first responders at an active drug laboratory.
CORRECT ANSWER: B. To define criteria and methodology for inspecting,
investigating, and remediating sites contaminated by precursors and drug
residues.
Rationale: The purpose of the S900 Standard is to define the criteria and methodology
used by a practitioner for inspecting and investigating chemical contamination and for
establishing work plans and procedures to make the site suitable for occupancy. It is a
performance standard, not a step-by-step manual .
Question 8: Which of the following is NOT listed as a primary subject matter
area within the ANSI/IICRC S900 Standard?
A. Principles of precursors, drug residues, and associated chemical waste cleanup
B. Safety and health
C. Business management and marketing strategies
D. Verification of cleaning
CORRECT ANSWER: C. Business management and marketing strategies
Rationale: The S900 Standard covers technical and safety-related subject matter,
including principles of cleanup, safety and health, inspection, levels of contamination,
remediation technologies, and verification of cleaning. Business management and
marketing strategies are not within the scope of this standard .
Question 9: The standard defines a "Competent Person" as someone who is
capable of identifying hazards and has the authority to take corrective
measures. What additional requirement must a competent person meet?
, A. They must have a master's degree in chemistry.
B. They must be licensed by the state as a general contractor.
C. They must be knowledgeable of applicable standards and capable of identifying
workplace hazards relating to the specific operation.
D. They must have been on the project from its inception.
CORRECT ANSWER: C. They must be knowledgeable of applicable standards
and capable of identifying workplace hazards relating to the specific
operation.
Rationale: A "Competent Person" is one who is capable of identifying existing and
predictable hazards and has authorization to take prompt corrective measures. By way
of training and/or experience, a competent person is knowledgeable of applicable
standards, is capable of identifying workplace hazards relating to the specific operation,
and has the authority to correct them .
Question 10: What is the significance of ANSI approval for the IICRC S900
Standard?
A. It makes the standard legally enforceable in all 50 states.
B. It confirms the standard was developed through a balanced, consensus-based
process.
C. It allows IICRC to charge a higher price for the document.
D. It indicates that the standard is primarily for use by government agencies.
CORRECT ANSWER: B. It confirms the standard was developed through a
balanced, consensus-based process.
Rationale: ANSI approval confirms that the S900 Standard was developed through a
balanced, consensus-based process incorporating input from restoration professionals,
industrial hygienists, public health experts, regulators, and other stakeholders. This
designation establishes it as a national benchmark .
Question 11: According to the S900 Standard, what is the role of "Materially
Interested Parties (MIPs)"?
A. They are individuals directly responsible for performing the physical cleaning.
B. They are individuals or entities substantially and directly affected by a contract.
C. They are the regulatory authorities who enforce the standard.
D. They are the primary suppliers of PPE for the remediation project.
CORRECT ANSWER: B. They are individuals or entities substantially and
directly affected by a contract.
Rationale: The S900 Standard defines Materially Interested Parties (MIPs) as an
individual or entity substantially and directly affected by a contract. This includes
consumers, occupants, property owners and managers, government, and regulatory
bodies, as well as consultants and adjusters .
