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 New Hampshire
Document:
"Contaminated sites risk characterization and management
policy" (September 1996).
Contact:
New Hampshire Department of Environmental Services,
Concord, NH.
Summary: The New Hampshire Department of Environmental Services'
guidance document describes "a tiered risk-based approach to characterize risks to
human health and environment posed by the release of contaminants at sites in
New Hampshire." The State's guidance for management of contaminated sites
borrows directly from Massachusetts regulation in its approach to assessing risk in
surface water bodies. It also follows the general format and tiered approach
(Methods 1, 2, 3) for risk assessment in the Massachusetts Contingency Plan.
New York
Document:
"Technical guidance for screening contaminated sediments"
(New York State Department of Environmental Conservation
1999).
Contact:
Albany, NY.
This document contains guidance for identifying areas of sediment
contamination and making a preliminary assessment of risk to human health and
the environment. Guidance for deriving criteria for nonpolar organic
contamination and metals in sediment is the focus of the document. Sediment
criteria for nonpolar organic contamination are derived using the equilibrium
partitioning approach, which assesses biological impact based on affinity of a
chemical to sorb to organic carbon in the sediment. Contaminant-specific New
York State water-quality criteria for protection of human health and piscivorous
wildlife are also used to derive sediment criteria for nonpolar organic
contamination. USEPA ambient water quality criteria were used when state water
quality criteria for a specific contaminant were not available. Sediment criteria for
metals are derived from effects-based concentrations, such as the Ministry of
Ontario Guidelines for Protection and Management of Aquatic Sediment Quality
and the National Oceanic and Atmospheric Agency (NOAA) ER-Ls and ER-Ms.
The lowest concentration from either of these effects-based concentrations
(Ontario or NOAA) is selected as the sediment criterion.
The concentration of nonpolar organic contamination and metals in the
sediment at a site are compared to the screening criteria concentrations described
above. If the sediment criteria are exceeded, a site-specific evaluation of the
contaminated sediment must be conducted. Further evaluation generally includes
additional chemical testing, sediment toxicity testing, and sediment
bioaccumulation tests. Technical guidance for conducting a site-specific
evaluation is not given in this document.
The ultimate goal of this screening process for contaminated sediment is to
make a decision regarding remediation of the site. Several factors such as the
volume and location of the sediment exceeding a sediment criterion, persistence
A23
Appendix A Summary of Federal, State, and Regional Guidance
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