  |
|
|
|
|
| Title | Vancouver Lake PCBs, Chlorinated Pesticides, and Dioxins in Fish Tissue and Sediment | |||
| Month-Year Published | March 2007 | |||
| Online Availability |
441 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
| |||
| Short Description |
Two previous Ecology studies have reported levels of PCBs and 4,4′-DDE (a DDT metabolite) in Vancouver Lake fish, with a mix of high and low results. This 2005-06 study analyzed fish tissue and surface sediments for PCBs, chlorinated pesticides, and dioxins/furans from Vancouver Lake and the nearby Lake River. Levels of PCBs, 4,4′-DDE, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), dieldrin, and toxaphene were elevated in fish. Only 4 of 186 total analyses for sediment samples were reported above detection limits. Recommendations include (1) addressing PCBs and 2,3,7,8-TCDD through a statewide assessment, and (2) conducting a surface water quality study to verify fish tissue concentrations and determine where fish collected for the study reside. (Also see abstract below) | |||
| Publication Number | 07-03-017 | |||
| Author(s) | Coots, R. | |||
| Print Availability | ||||
| Number of pages | 28 + app (62 total) | |||
| Keywords | chlorinated, contaminant, dioxin, dioxins, environmental, Environmental Protection Agency, fish, lake, pesticide, recommendations, results, river, rule, sediment, tissue, Total Maximum Daily Load, toxic, toxics, water | |||
| Subject Waterbodies |
| |||
| Related Publications | Title | Relationship | ||
| Quality Assurance Project Plan: Vancouver Lake PCBs, Chlorinated Pesticides, and Dioxins Fish Tissue Investigation | similar topic | |||
| Abstract | Long Description |
This 2005-06 study was conducted to investigate the current levels of PCBs, chlorinated pesticides, and dioxins in fish tissue and sediment from Vancouver Lake. Contaminants in Lake River fish and sediment also were assessed. Two previous studies conducted by the Washington State Department of Ecology identified elevated levels of polychlorinated biphenyls (PCBs) and a chlorinated pesticide, 4,4′-DDE (a metabolite of DDT), in fish tissue from Vancouver Lake. Contaminant levels higher than the U.S. Environmental Protection Agency′s National Toxics Rule (NTR) human health criteria have been reported, but historically with a mix of high and low results. Largescale suckers, common carp, and largemouth bass samples were analyzed. Results indicated PCBs were elevated in all three fish species, exceeding the NTR criterion. Other compounds found exceeding NTR criteria in fish tissue were 4,4′-DDE; 2,3,7,8- tetrachlorodibenzo-p-dioxin (TCDD); toxaphene; and dieldrin. In addition to the fish tissue samples, sediment samples were collected from Vancouver Lake and the Lake River. Vancouver Lake sediments were low for PCBs and chlorinated pesticides; only four of the 186 total analyses were reported above detection limits, well below proposed sediment quality guidelines. No target compounds were detected in Lake River sediments. As a result of this study, the following recommendations are made: |
||
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
