Ohio Mold Remediation Contractor
Exam Questions And Correct Answers
With Rationales 2026
1. Which federal agency primarily regulates indoor air quality issues
related to mold?
A. OSHA
B. EPA
C. CDC
D. HUD
EPA
The Environmental Protection Agency (EPA) provides primary
guidelines and regulations on mold and indoor air quality.
,2. Which type of mold is most associated with mycotoxin production?
A. Aspergillus
B. Penicillium
C. Stachybotrys chartarum
D. Cladosporium
Stachybotrys chartarum
Stachybotrys chartarum, often called "black mold," is associated with
mycotoxin production and health risks.
3. The Ohio Revised Code requires a mold remediation contractor to:
A. Obtain OSHA approval
B. Be licensed by the Ohio Department of Health
C. Be registered with the CDC
D. Have EPA certification only
Be licensed by the Ohio Department of Health
Ohio law requires mold remediation contractors to be licensed and
meet state-specific training and testing requirements.
4. The first step in mold remediation is:
A. Applying disinfectant
B. Identifying and controlling the moisture source
C. Removing drywall
D. Using air scrubbers
Identifying and controlling the moisture source
, Moisture control is essential; remediation without it will fail as mold
will return.
5. Which personal protective equipment (PPE) is typically required for
Level II remediation (10–100 sq. ft.)?
A. N95 respirator and gloves
B. Half-face respirator with HEPA filters, gloves, goggles
C. Powered air purifying respirator (PAPR)
D. No PPE required
Half-face respirator with HEPA filters, gloves, goggles
Moderate-sized projects require enhanced PPE for respiratory and
eye protection.
6. What is the primary filtration standard for mold remediation air
scrubbers?
A. MERV 8
B. MERV 13
C. HEPA filtration
D. UV sterilization
HEPA filtration
HEPA filters remove 99.97% of particles ≥0.3 microns, necessary for
mold spores.
7. Negative air pressure is important in containment because it:
A. Heats the workspace
B. Prevents spores from escaping containment
, C. Speeds drying
D. Improves worker comfort
Prevents spores from escaping containment
Maintaining negative pressure ensures spores do not migrate to
clean areas.
8. What is the recommended relative humidity (RH) indoors to
discourage mold growth?
A. 50–70%
B. 40–60%
C. Below 60%
D. 70–90%
Below 60%
Mold requires higher humidity; keeping RH below 60% helps prevent
growth.
9. Which organization publishes IICRC S520 standards?
A. OSHA
B. Institute of Inspection, Cleaning, and Restoration Certification
C. EPA
D. ANSI only
Institute of Inspection, Cleaning, and Restoration Certification
The IICRC sets industry standards, including the S520 for mold
remediation.
Exam Questions And Correct Answers
With Rationales 2026
1. Which federal agency primarily regulates indoor air quality issues
related to mold?
A. OSHA
B. EPA
C. CDC
D. HUD
EPA
The Environmental Protection Agency (EPA) provides primary
guidelines and regulations on mold and indoor air quality.
,2. Which type of mold is most associated with mycotoxin production?
A. Aspergillus
B. Penicillium
C. Stachybotrys chartarum
D. Cladosporium
Stachybotrys chartarum
Stachybotrys chartarum, often called "black mold," is associated with
mycotoxin production and health risks.
3. The Ohio Revised Code requires a mold remediation contractor to:
A. Obtain OSHA approval
B. Be licensed by the Ohio Department of Health
C. Be registered with the CDC
D. Have EPA certification only
Be licensed by the Ohio Department of Health
Ohio law requires mold remediation contractors to be licensed and
meet state-specific training and testing requirements.
4. The first step in mold remediation is:
A. Applying disinfectant
B. Identifying and controlling the moisture source
C. Removing drywall
D. Using air scrubbers
Identifying and controlling the moisture source
, Moisture control is essential; remediation without it will fail as mold
will return.
5. Which personal protective equipment (PPE) is typically required for
Level II remediation (10–100 sq. ft.)?
A. N95 respirator and gloves
B. Half-face respirator with HEPA filters, gloves, goggles
C. Powered air purifying respirator (PAPR)
D. No PPE required
Half-face respirator with HEPA filters, gloves, goggles
Moderate-sized projects require enhanced PPE for respiratory and
eye protection.
6. What is the primary filtration standard for mold remediation air
scrubbers?
A. MERV 8
B. MERV 13
C. HEPA filtration
D. UV sterilization
HEPA filtration
HEPA filters remove 99.97% of particles ≥0.3 microns, necessary for
mold spores.
7. Negative air pressure is important in containment because it:
A. Heats the workspace
B. Prevents spores from escaping containment
, C. Speeds drying
D. Improves worker comfort
Prevents spores from escaping containment
Maintaining negative pressure ensures spores do not migrate to
clean areas.
8. What is the recommended relative humidity (RH) indoors to
discourage mold growth?
A. 50–70%
B. 40–60%
C. Below 60%
D. 70–90%
Below 60%
Mold requires higher humidity; keeping RH below 60% helps prevent
growth.
9. Which organization publishes IICRC S520 standards?
A. OSHA
B. Institute of Inspection, Cleaning, and Restoration Certification
C. EPA
D. ANSI only
Institute of Inspection, Cleaning, and Restoration Certification
The IICRC sets industry standards, including the S520 for mold
remediation.
