CEA Risk Management & Environmental Impact 2

Question 1

Which risk assessment methodology uses a matrix combining likelihood and consequence ratings to prioritize environmental risks?

Accepted Answer

Risk Ranking Matrix

Answer

Fault Tree Analysis

Answer

Monte Carlo Simulation

Answer

Bowtie Analysis

Question 2

Under RCRA, which characteristic makes a solid waste a hazardous waste due to its potential to cause an explosion or fire?

Accepted Answer

Ignitability

Answer

Toxicity

Answer

Corrosivity

Answer

Reactivity

Question 3

An environmental auditor identifies that stormwater runoff from an industrial site is discharging to a wetland without an NPDES permit. What is the FIRST corrective action priority?

Accepted Answer

Cease or control the discharge and notify the regulatory agency

Answer

Prepare a Spill Prevention Control and Countermeasure Plan

Answer

Conduct a wetland delineation study

Answer

Install secondary containment around all storage tanks

Question 4

Which concept describes the maximum concentration of a pollutant in air that a healthy adult can be exposed to for a lifetime without appreciable health risk?

Accepted Answer

Reference Concentration (RfC)

Answer

Reference Dose (RfD)

Answer

No Observed Adverse Effect Level (NOAEL)

Answer

Inhalation Unit Risk (IUR)

Question 5

A brownfield site risk assessment reveals arsenic soil concentrations above residential but below commercial screening levels. What risk management option is MOST appropriate if the site will become a parking lot?

Accepted Answer

No action required since concentrations are below commercial levels

Answer

Full excavation and off-site disposal

Answer

Institutional controls limiting residential use

Answer

Pump-and-treat groundwater remediation

Question 6

Which document formally establishes the legal obligations for cleanup of a Superfund site and is enforceable against responsible parties?

Accepted Answer

Consent Decree

Answer

Record of Decision (ROD)

Answer

Remedial Investigation Report

Answer

Feasibility Study

Question 7

When performing a Tier 2 ecological risk assessment, what is the primary purpose of the exposure-response relationship?

Accepted Answer

To quantify the probability and magnitude of adverse effects at measured exposure levels

Answer

To set cleanup standards based on human health benchmarks

Answer

To determine the source of contamination through forensic chemistry

Answer

To calculate the total mass of contaminants present in the ecosystem