Most King County offices will be closed on Thursday and Friday, Nov. 23-24, 2017, for the Thanksgiving holiday.  
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Map Legend
No effect No effect
Uncertain effect Uncertain effect
Probable effect Probable effect

Sediment quality guidelines provided a benchmark to better understand the potential for adverse effects on sediment-dwelling animals from sediment-associated chemicals. (Please see sediment quality guidelines tab for more information).

For more information about this program, contact Dean Wilson.