CEI CEI Hazardous Materials & Remediation 2

Question 1

Under RCRA, which category of hazardous waste is defined by specific characteristics such as ignitability, corrosivity, reactivity, or toxicity?

Accepted Answer

Characteristic waste

Answer

Characteristic hazardous wastes are defined by four measurable properties — ignitability, corrosivity, reactivity, and toxicity — rather than appearing on a specific EPA list.

Question 2

What is 'pump and treat' commonly used to accomplish during groundwater remediation?

Accepted Answer

Extract contaminated groundwater and treat it above ground before discharge

Answer

Pump and treat systems extract contaminated groundwater to the surface, treat it using physical or chemical processes, and then discharge or reinject the treated water.

Question 3

Which term describes the concentration of a contaminant in soil or water at which no adverse health effects are expected over a lifetime of exposure?

Accepted Answer

Risk-Based Cleanup Level (RBCL)

Answer

Risk-Based Cleanup Levels are site-specific concentrations calculated using toxicological data and exposure assumptions to be protective of human health.

Question 4

What is the role of a Potentially Responsible Party (PRP) under CERCLA?

Accepted Answer

An entity that may be held liable for cleanup costs at a Superfund site

Answer

PRPs include current and former owners/operators, generators, and transporters who may be held jointly and severally liable for cleanup costs under CERCLA.

Question 5

During a Phase II Environmental Site Assessment, what activity distinguishes it from a Phase I?

Accepted Answer

Collecting and analyzing environmental samples

Answer

A Phase II ESA involves actual collection and laboratory analysis of soil, groundwater, or building material samples to confirm or refute suspected contamination identified in Phase I.

CEI - Certified Environmental Inspector Practice Test

CEI - Certified Environmental Inspector Practice Test

CEI CEI Hazardous Materials & Remediation 2