Environmental Concerns and Safety Issues Flashcards

A home inspector observes a large area of visible mold on basement walls after a flood. The inspector's correct course of action is to:

Answer: Document the extent of visible mold growth and recommend remediation by a qualified professional

Home inspectors identify and document visible mold and recommend professional remediation; they do not remediate, collect samples for analysis, or apply treatments.

Which type of asbestos fiber is considered most hazardous due to its thin, straight shape that penetrates deep lung tissue?

Answer: Crocidolite (blue asbestos) and amosite (brown asbestos) amphibole fibers

Amphibole fibers like crocidolite and amosite are straight and thin, allowing them to penetrate deep into the lung where they cause mesothelioma and cancer.

In a home with an older oil-fired furnace, what environmental safety concern should be evaluated related to the fuel storage tank?

Answer: Underground storage tank (UST) corrosion causing soil and groundwater contamination

Older underground oil storage tanks can corrode and leak, contaminating surrounding soil and groundwater, and may require remediation under state environmental regulations.

Which of the following household products most commonly contributes to elevated formaldehyde levels in a newly constructed home?

Answer: Pressed-wood products such as particleboard and MDF using urea-formaldehyde binders

Pressed-wood products bonded with urea-formaldehyde resins off-gas formaldehyde, especially when new, contributing significantly to indoor air quality problems.

A home inspector notices the crawl space has standing water and an earthy odor but no visible mold. The most important recommendation is:

Answer: Address the source of moisture intrusion and improve drainage and ventilation to prevent mold development

Correcting the moisture source and improving drainage eliminates the condition that supports mold growth rather than masking or managing symptoms.

Which product installed in homes between 1930 and 1978 poses the greatest friable asbestos hazard when HVAC ductwork is disturbed?

Answer: Duct wrap insulation and flexible duct connectors containing chrysotile asbestos

Flexible duct connectors and wrap insulation from that era frequently contained asbestos and become friable when disturbed, releasing airborne fibers.

Under the EPA's RRP (Renovation, Repair, and Painting) Rule, contractors working on pre-1978 housing must:

Answer: Be certified and follow lead-safe work practices to contain and clean up lead dust

The RRP Rule requires renovation contractors in pre-1978 homes to be EPA-certified and use lead-safe work practices including containment, minimizing dust, and thorough cleanup.