Environmental Compliance Inspector Environmental Hazards & Risk Assessment 2

Question 1

Under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), which party is generally NOT held liable for cleanup costs at a contaminated site?

Accepted Answer

Innocent landowner who had no knowledge of contamination

Answer

CERCLA's innocent landowner defense protects buyers who conducted all appropriate inquiries and had no knowledge of contamination at the time of purchase.

Question 2

A risk assessor calculates a Hazard Quotient (HQ) of 2.5 for a non-carcinogenic chemical at a site. What does this value indicate?

Accepted Answer

The exposure exceeds the reference dose by 2.5 times, indicating potential concern

Answer

An HQ greater than 1.0 indicates that exposure exceeds the reference dose and warrants concern for non-carcinogenic health effects.

Question 3

Which exposure pathway is typically the PRIMARY concern for volatile organic compounds (VOCs) in contaminated groundwater beneath a residential property?

Accepted Answer

Vapor intrusion into indoor air

Answer

VOCs can volatilize from contaminated groundwater and migrate through soil into building foundations, making vapor intrusion the dominant exposure pathway.

Question 4

During a Phase I Environmental Site Assessment, which of the following would be considered a 'Recognized Environmental Condition' (REC)?

Accepted Answer

An abandoned underground storage tank with no known release

Answer

An abandoned UST with no known release qualifies as a REC because it represents a potential release that may have occurred but has not been confirmed or ruled out.

Question 5

The EPA's Toxics Release Inventory (TRI) program requires facilities to report releases of listed chemicals when they exceed certain thresholds. Which sector is generally subject to TRI reporting?

Accepted Answer

Manufacturing facilities that use listed chemicals above threshold quantities

Answer

TRI reporting applies primarily to manufacturing and other specified industries that manufacture, process, or otherwise use listed toxic chemicals above threshold quantities.

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Environmental Hazards & Risk Assessment 2