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100+ Free AHERA Asbestos Supervisor Practice Questions

Pass your AHERA Asbestos Contractor/Supervisor Certification Exam (EPA Model Accreditation Plan) exam on the first try — instant access, no signup required.

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Which two EPA-approved accreditation disciplines must a Management Planner hold under AHERA?

A
B
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D
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2026 Statistics

Key Facts: AHERA Asbestos Supervisor Exam

70%

Passing Score

EPA AHERA MAP

100 Q

Practice Questions

OpenExamPrep

40 hrs

Initial Training

EPA AHERA MAP

8 hrs

Annual Refresher

EPA AHERA MAP

10 days

NESHAP Notification

40 CFR 61 Subpart M

AHERA Contractor/Supervisor accreditation requires a 40-hour EPA-approved initial course (32-hour Worker content plus 8 additional supervisor hours) and an annual 8-hour refresher. The supervisor serves as the Competent Person on Class I/II abatement projects with authority to halt unsafe work, oversee containment, verify air monitoring, and ensure NESHAP/OSHA compliance.

Sample AHERA Asbestos Supervisor Practice Questions

Try these sample questions to test your AHERA Asbestos Supervisor exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under OSHA 1926.1101, what is the definition of a Competent Person on an asbestos abatement project?
A.A worker with at least five years of abatement experience
B.One capable of identifying existing and predictable asbestos hazards and authorized to take prompt corrective action to eliminate them
C.Any AHERA-accredited individual on site
D.The general contractor's project manager
Explanation: OSHA 1926.1101 defines the Competent Person as someone capable of identifying existing and predictable asbestos hazards in the surroundings or working conditions, AND who has authorization to take prompt corrective measures to eliminate them. Both elements are required: knowledge plus authority. Experience alone is not enough, and AHERA accreditation alone does not make someone a Competent Person without explicit authorization.
2How many hours of EPA-approved initial training are required for AHERA Contractor/Supervisor accreditation?
A.24 hours
B.32 hours
C.40 hours (Worker 32-hour content plus 8 additional supervisor hours)
D.80 hours
Explanation: AHERA Contractor/Supervisor initial training is 40 hours total: the 32-hour Worker course content plus 8 additional hours focused on supervisor-specific topics like work plan development, regulatory oversight, crew supervision, and project documentation. An 8-hour refresher is required every year thereafter to maintain accreditation.
3How many working days advance notice must be given to the state NESHAP authority before starting a regulated demolition or renovation under 40 CFR 61 Subpart M?
A.3 working days
B.5 working days
C.10 working days
D.30 working days
Explanation: NESHAP 40 CFR 61 Subpart M requires the owner/operator to provide written notification to the EPA-delegated state or local NESHAP authority at least 10 working days before commencing any asbestos stripping, removal, demolition, or renovation activity that meets regulatory thresholds. Some states require longer; emergency renovations have separate notification provisions.
4Under NESHAP, what is the threshold quantity that triggers notification and work-practice requirements for a renovation?
A.Any amount of ACM regardless of size
B.At least 260 linear feet on pipes, 160 square feet on other facility components, or 35 cubic feet off facility components of RACM
C.At least 100 square feet of any ACM
D.At least 1,000 square feet of any ACM
Explanation: NESHAP 40 CFR 61.145 establishes thresholds for renovations: at least 260 linear feet on pipes, OR 160 square feet on other facility components, OR 35 cubic feet off facility components of RACM. Demolitions trigger NESHAP regardless of ACM quantity (notification still required). Below these renovation thresholds, NESHAP work-practice requirements do not apply, though OSHA worker protection still does.
5As a supervisor reviewing an abatement work plan, which element is REQUIRED before mobilization?
A.A description of the contractor's marketing materials
B.Project description, ACM quantities and types, removal methods, containment design, decontamination design, waste handling, air monitoring plan, and emergency procedures
C.Only the start and end dates
D.Only the names of workers assigned
Explanation: An abatement work plan must address the entire project lifecycle: project description and location, ACM quantities and types verified from the building survey, removal methods (Class I/II/III), containment design with negative pressure parameters, decontamination unit design, waste handling and disposal route, air monitoring plan (personal and clearance), and emergency procedures. Work plans missing any of these elements should be revised before mobilization.
6What is the target negative pressure inside a Class I abatement containment, measured at the manometer?
A.-0.002 inch water column
B.-0.02 inch water column
C.-0.2 inch water column
D.-2.0 inch water column
Explanation: Industry standard and most state regulations specify a minimum negative pressure of -0.02 inch water column (also expressed as -0.02 in. WC or -5 Pa) inside a Class I containment relative to outside ambient air. A continuous-reading manometer documents pressure. Pressure differential must be verified before work starts each day and continuously monitored to ensure fibers cannot migrate out of containment.
7How many air changes per hour (ACH) is the minimum design target for a Class I asbestos containment?
A.1 ACH
B.2 ACH
C.4 ACH
D.12 ACH
Explanation: The minimum design target for a Class I containment is at least 4 air changes per hour (ACH). The supervisor calculates required negative air machine (NAM) capacity by multiplying containment cubic volume by 4 and dividing by 60 to get CFM, then sizing NAMs (commonly 1,500-2,000 CFM each, derated for filter loading) with redundancy. Some specifications and dense work areas require higher ACH.
8What clearance air sampling concentration must be met under AHERA before tearing down a Class I containment in a school project?
A.0.1 f/cc by PCM
B.Less than or equal to 0.01 f/cc by PCM, or TEM equivalent
C.Less than 1.0 f/cc
D.No clearance sampling is required
Explanation: AHERA (40 CFR 763) requires clearance sampling after final cleaning in schools. Phase Contrast Microscopy (PCM) clearance is set at less than or equal to 0.01 f/cc, or TEM analysis showing fiber counts at or below 70 structures per square millimeter (Z-test pass). At least five inside-containment samples are collected under aggressive sampling conditions. Non-school projects often follow project specifications referencing the same thresholds.
9What is 'aggressive sampling' during clearance air monitoring?
A.Sampling continuously for 24 hours
B.Using leaf blowers and stationary fans to stir settled dust during sampling to verify the work area is genuinely clean
C.Taking many samples in different parts of the building
D.Pressurizing the containment positively
Explanation: Aggressive sampling is an AHERA-required procedure: a leaf blower is used to direct exhaust along walls/ceilings/floors to suspend any settled dust, then 20-inch stationary fans (one per 10,000 ft^3) run continuously while air samples are collected. The intent is to challenge final cleaning by stirring up residual fibers - a passing aggressive sample provides confidence that re-entry will not expose subsequent occupants.
10How long must employee asbestos exposure and medical records be retained under OSHA 29 CFR 1910.1020?
A.3 years
B.7 years
C.Duration of employment plus 30 years
D.Indefinitely without any minimum
Explanation: OSHA 29 CFR 1910.1020 (Access to Employee Exposure and Medical Records) requires employers to retain employee exposure records and medical records for at least the duration of employment plus 30 years. This long retention reflects the 15-30 year latency of asbestos-related disease. Supervisors must ensure project records (air monitoring, fit tests, training, medical clearance) are transferred for retention when projects end.

About the AHERA Asbestos Supervisor Exam

The AHERA Asbestos Contractor/Supervisor exam follows the EPA Model Accreditation Plan (MAP) under the Asbestos Hazard Emergency Response Act. It covers all AHERA Worker content plus supervisor-specific topics including Competent Person duties under OSHA 1926.1101, abatement work plan development, NESHAP 10-working-day notifications, pre-abatement surveys and isolation, containment design and negative pressure verification, air monitoring oversight, clearance criteria and aggressive sampling, waste manifesting, crew supervision, OSHA inspections, recordkeeping (30-year retention), and federal-state regulatory boundaries.

Questions

50 scored questions

Time Limit

60 minutes

Passing Score

70%

Exam Fee

Included in training course tuition (EPA-accredited training providers (state-approved per AHERA Model Accreditation Plan))

AHERA Asbestos Supervisor Exam Content Outline

15%

Competent Person & Supervisor Duties

OSHA 1926.1101 Competent Person definition, daily inspections, authority to take corrective action, crew supervision

15%

Project Planning & Bid Preparation

Pre-job assessment, abatement work plan, cost estimating, scope of work, scheduling

15%

Regulations (AHERA, NESHAP, OSHA, DOT, RCRA)

EPA MAP, 40 CFR 763, NESHAP 40 CFR 61 Subpart M, 29 CFR 1926.1101, 1910.134, notification triggers, penalties

20%

Containment Design & Work Practices

Class I-IV work, full enclosure, mini-enclosures, glove bags, negative air sizing, wet methods, decontamination

15%

Air Monitoring & Clearance

Personal vs area sampling, baseline monitoring, aggressive sampling for clearance, PCM/TEM analysis, NIOSH 7400

10%

Waste Handling & Disposal

Labeling, double-bagging, manifests, landfill requirements, DOT transport, NESHAP 6-inch cover

10%

Documentation, Recordkeeping & Worker Rights

30-year employee records, project records, OSHA 11(c) whistleblower, right to know, medical records access

How to Pass the AHERA Asbestos Supervisor Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 50 questions
  • Time limit: 60 minutes
  • Exam fee: Included in training course tuition

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

AHERA Asbestos Supervisor Study Tips from Top Performers

1Memorize the NESHAP 10-working-day advance notification requirement and what triggers it
2Master the Competent Person definition from OSHA 1926.1101 and daily inspection duties
3Know the negative pressure target of -0.02 inch water column and 4 air changes per hour minimum
4Understand aggressive sampling procedures for AHERA clearance (0.01 f/cc TEM or PCM equivalent)
5Distinguish OSHA (worker protection) from EPA NESHAP (emissions) regulatory boundaries
6Review supervisor-specific records: daily logs, fit-test records, manifests, and 30-year retention rules

Frequently Asked Questions

What does the AHERA Asbestos Contractor/Supervisor exam cover?

The exam follows the EPA Model Accreditation Plan and covers Competent Person duties under OSHA 1926.1101, abatement work plan development, NESHAP notifications, containment design, air monitoring oversight, clearance criteria, waste manifesting, and federal-state regulatory boundaries.

How long is the AHERA Contractor/Supervisor initial training course?

The AHERA Contractor/Supervisor initial training is a 40-hour EPA-approved course consisting of the 32-hour Worker content plus 8 additional hours focused on supervisor responsibilities. An 8-hour refresher is required every year to maintain accreditation.

What is the passing score on the AHERA Supervisor exam?

Most EPA-approved AHERA Contractor/Supervisor exams require a minimum score of 70% to pass. The exam typically contains around 50 multiple-choice questions delivered at the end of the 40-hour training course.

What is a Competent Person under OSHA 1926.1101?

Under OSHA 1926.1101, a Competent Person is one capable of identifying existing and predictable asbestos hazards in the surroundings or working conditions and who has authorization to take prompt corrective measures to eliminate them. A Competent Person must be on site for all Class I and II asbestos work.

How does AHERA Supervisor accreditation differ from state contractor licensing?

AHERA accreditation is the federal training credential issued through EPA-approved courses. Most states require additional licensing - a state-issued asbestos supervisor license or contractor registration that requires AHERA accreditation as a prerequisite. Check your state asbestos program for specifics.