Harbor Island Tributyl Tin Investigation
Harbor Island RI/FS Tributyl Tin Investigation, July 1998
Description
A field study was completed to evaluate potential ecological impacts associated with exposure to tributyltin (TBT) in marine surface sediments within the West Waterway of the Harbor Island Superfund Site, Seattle, WA. The work was performed in accordance with a 1998 Administrative Order on Consent and Statement of Work (SOW) signed by the EPA, Port of Seattle, Lockheed Martin, and Todd Shipyards. This study included collection and analysis of bulk sediment (0-10 cm) and porewater for TBT (both filtered and unfiltered) at 30 stations in West Waterway and 4 stations in Todd Shipyards (EVS, 1998). Based on a review of the resultant bulk sediment and porewater data, sediments from 20 stations in West Waterway were selected for use in 45-day bioaccumulation tests to evaluate tissue uptake of TBT in Macoma nasuta (clam) and Nephtys caecoides (worm). At the end of the test, tissue data were analyzed for TBT. To support interpretation of resultant tissue data, a literature review of all known tissue-residue effects data for TBT in marine invertebrates and fish was completed.
Study results are in the following reports:
Tributyltin in marine sediments and the bioaccumulation of tributyltin: combined data report. Waterway Sediment OU of Harbor Island Superfund Site, Seattle, WA. Prepared by Environmental Solutions Inc. for Port of Seattle, Lockheed Martin Corporation, and Todd Shipyards for submittal to U.S. EPA, Seatttle, WA. May 1999.
Review of Tissue Residue Effects Data for Tributyltin, Mercury, and PCBs. Prepared by EVS Solutions for Port of Seattle, Lockheed Martin Corporation, and Todd Shipyards for submittal to U.S. EPA, Seattle, WA. May 1999.
Data Files (for viewing - html format)
Table 1. West Waterway Sediment Operable Unit Grab Sampling Locations - July 15-17, 1998
Table 3-1. Sediment chemistry and conventional parameters
Table 3-2. Filtered and unfiltered porewater chemistry
Table 3-3ma. Tissue Chemistry for Macoma nasuta
Table 3-3ne. Tissue Chemistry for Nephtys caecoides
Data Files (for downloading - Excel format)
Table 1. West Waterway Sediment Operable Unit Grab Sampling Locations - July 15-17, 1998
Table 3-1. Sediment chemistry and conventional parameters
Table 3-2. Filtered and unfiltered porewater chemistry
Table 3-3ma. Tissue Chemistry for Macoma nasuta
Table 3-3ne. Tissue Chemistry for Nephtys caecoides
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