10 free, exam-style EPA Asbestos Building Inspector (AHERA) practice questions with answers and explanations. No signup required. Work through them below, then take the full free AHERA practice test to study every exam domain.
An accredited inspector is sampling a single homogeneous area of friable acoustical plaster, uniform in color and texture, that covers 3,200 square feet of an auditorium ceiling. Under the AHERA sampling protocol, what is the MINIMUM number of bulk samples the inspector must collect from this area?
Correct answer: B - Five samples
An inspector collects five bulk samples from a 4,000-square-foot homogeneous area of friable surfacing material. The laboratory reports four samples below 1% asbestos and one sample at 2.5% asbestos. How must the inspector classify this homogeneous area?
Correct answer: C - ACM, because at least one sample contained more than 1% asbestos
During an inspection of a building constructed in 1968, an inspector finds friable spray-applied fireproofing on a structural steel beam. The material is deteriorated across approximately 20% of its surface, with the damage spread evenly along the beam. Under 40 CFR 763.88, this condition is BEST classified as:
Correct answer: D - Significantly damaged friable surfacing ACM
Under the AHERA Model Accreditation Plan, a building material is correctly classified as 'friable' when it:
Correct answer: A - Can be crumbled, pulverized, or reduced to powder by hand pressure when dry
An inspector is explaining health risks to a building owner who smokes. Which statement correctly describes the relationship between cigarette smoking and asbestos exposure?
Correct answer: A - Together they produce a multiplicative increase in the risk of lung cancer
A local education agency has an asbestos management plan in place for a school with known ACBM. Under AHERA, a full reinspection conducted by an accredited inspector must be performed at least once every:
Correct answer: C - Three years
An accredited inspector completes a survey and documents a homogeneous area of significantly damaged friable surfacing ACM. Determining the specific response action needed to address this material is the responsibility of the:
Correct answer: A - Accredited management planner
An inspector who wears a full beard is preparing to collect bulk samples that will require a tight-fitting half-face respirator. Regarding respiratory protection, the inspector must understand that:
Correct answer: D - Facial hair breaks the face-piece seal, so a tight-fitting respirator cannot be used until the inspector is clean-shaven
While inspecting above a suspended ceiling, an inspector finds that the space is used as an open return-air plenum and contains friable spray-applied fireproofing on the deck above. Why is this finding especially significant?
Correct answer: D - Disturbed fibers can be drawn into the HVAC return air and distributed throughout the building
Of the six regulated asbestos minerals, which one has a serpentine (curly-fiber) structure and is the type most commonly found in U.S. building materials?
Correct answer: B - Chrysotile
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