Memorandum for Determining Groundwater Exposure Point Concentrations, Supplemental Guidance
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Overview
The mission of the Superfund Program is to protect human health and the environment consistent with the Comprehensive Environmental Response, Compensation and Liability Act, as amended, and as implemented by the National Oil and Hazardous Substances Pollution Contingency Plan.This memorandum transmits Determining Groundwater Exposure Points Concentrations, which is included under downloads, and is to be used in the remedial investigations and feasibility study process (e.g., assessing baseline health risks, evaluating risks of remedial alternatives) and five-year reviews of selected remedies.
Background
The attached guidance was developed to reduce unwarranted variability in the exposure assumptions used by Regional Superfund staff to characterize exposures to human populations in the baseline risk assessment. Other cleanup programs in the Office of Solid Waste and Emergency Response (OSWER) are welcome and encouraged to adopt this guidance, much as they have historically adopted other aspects of the Risk Assessment Guidance for Superfund (RAGS).Download(s)
This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- U.S.EPA. Determining Groundwater Exposure Point Concentrations (OSWER Directive 9283.1-42, February 2014) (PDF) (20 pp, 3.8 MB, about PDF)
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