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Title

Dioxin in Surface Water Sources to Oakland Bay (Mason County)

 
Publication number Date Published
13-03-022May 2013
VIEW NOW Dioxin in Surface Water Sources to Oakland Bay (Mason County) (Number of pages: 44) (Publication Size: 10484KB)




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Author(s) Coots, R.
Description In 2011, dioxin measured from Shelton, Goldsborough, and Johns Creek sediments were generally low, much lower than surface sediments reported from Shelton Harbor or Oakland Bay in 2008. Study results showed these surface water inputs do not currently appear to be the source of the bay-wide dioxin levels.

Two soil samples from an ash mound along Shelton Creek were also analyzed. They had the highest dioxin concentrations reported for the study, more similar to mean values from Shelton Harbor and Oakland Bay than from Shelton, Goldsborough, or Johns Creeks.

Sampling was conducted following the dry season. Wet-season wash off and storm events could exacerbate dioxin loading. Recommendations are made to determine the ash mound contaminant extent and monitoring to verify improvement.
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Contact Randy Coots at 360-407-6690 or rcoo461@ecy.wa.gov
Keywords Shelton Harbor, Oakland Bay, surface water, Puget Sound, dioxin
WATERSHED Water Resource Inventory Area 14 Kennedy-Goldsborough
DATA Environmental Information Management (EIM) #rcoo0012