CEP Environmental Risk Assessment & Management 3

Question 1

The 'hazard quotient' (HQ) in non-cancer risk assessment is calculated as:

Accepted Answer

Exposure dose divided by the reference dose

Answer

HQ = exposure dose / reference dose (RfD); an HQ greater than 1 indicates potential non-cancer risk concern.

Question 2

Which EPA tier approach is used when site-specific data are insufficient and relies on conservative default assumptions?

Accepted Answer

Tier 1 – Screening-Level Risk Assessment

Answer

Tier 1 screening-level assessments use conservative default values and generic assumptions to identify sites that may require further investigation.

Question 3

Under the EPA's Risk-Based Corrective Action (RBCA) framework, cleanup standards are determined by:

Accepted Answer

Site-specific risk calculations linked to future land use

Answer

RBCA ties cleanup standards to site-specific risk calculations that account for actual or reasonably anticipated land use and exposure conditions.

Question 4

What does a 'slope factor' (SF) quantify in cancer risk assessment?

Accepted Answer

The probability of developing cancer per unit dose of a carcinogen

Answer

The cancer slope factor represents the upper-bound probability of developing cancer per unit of lifetime average daily dose of a carcinogen.

Question 5

A 'natural attenuation' remedy is most appropriate when:

Accepted Answer

Monitored natural processes can degrade contaminants to acceptable levels within a reasonable timeframe

Answer

Monitored Natural Attenuation (MNA) is appropriate when natural processes (biodegradation, dilution, sorption) can reduce contamination to protective levels without posing unacceptable risk.

(CEP) Certified Environmental, Social, and Governance (ESG) Planner Practice Test

(CEP) Certified Environmental, Social, and Governance (ESG) Planner Practice Test

CEP Environmental Risk Assessment & Management 3