Environmental Compliance Inspector Soil and Land Contamination 2

Question 1

When evaluating soil contamination from a lead smelter, which exposure pathway is typically the primary concern for residential land use?

Accepted Answer

Ingestion of contaminated soil by children

Answer

For lead-contaminated soil at residential sites, incidental soil ingestion by children is the critical exposure pathway because children have hand-to-mouth behavior and greater bioavailability of lead.

Question 2

Under CERCLA, what is a Potentially Responsible Party (PRP)?

Accepted Answer

Any party that may be liable for cleanup costs including current owners, past owners, generators, or transporters

Answer

CERCLA imposes strict, joint and several liability on four classes of PRPs: current owners/operators, past owners/operators, generators who arranged for disposal, and transporters who selected the disposal site.

Question 3

What is the significance of vapor intrusion in soil contamination investigations?

Accepted Answer

It describes the migration of volatile contaminants from subsurface soil or groundwater into overlying buildings

Answer

Vapor intrusion occurs when volatile organic compounds (VOCs) in contaminated soil or groundwater migrate as vapors through the subsurface into buildings, creating indoor air quality concerns.

Question 4

A compliance inspector discovers discolored soil and a petroleum odor near an old UST. What is the first action to document?

Accepted Answer

Photograph and GPS-coordinate the observation, recording depth, color, odor, and extent in the field log

Answer

Thorough field documentation — photos, GPS coordinates, descriptive observations of color, odor, and apparent extent — must be completed before any other action to create an accurate compliance record.

Question 5

Which cleanup standard applies when contaminated soil will remain on-site under a cap rather than being removed?

Accepted Answer

Risk-based cleanup levels combined with institutional and engineering controls

Answer

When soil is capped in place, risk-based cleanup levels are used alongside engineering controls (the cap) and institutional controls (deed restrictions) to prevent exposure.

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Soil and Land Contamination 2