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EXH AR021688: Turbidity Data Email — Sea-Tac Tank Farm Outfall vs. DM Creek, Jan 28, 2002

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Sea-Tac Airport
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An email dated February 8, 2002, from Peter Willing to John Strand reports turbidity measurements taken during a site visit at Sea-Tac on January 28, 2002, between 11:45 and 12:08. Two samples were recorded: Sample #1 showed tank farm outfall at 281 NTU and DM Creek at 31 NTU, while Sample #2 showed tank farm outfall at 299 NTU and DM Creek at 31.2 NTU. The data indicates significantly elevated turbidity levels at the tank farm outfall compared to the creek reference point.

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Email from Peter Willing (pwilling@telcomplus.net) to John Strand (JStrand427@aol.com), dated February 8, 2002, reporting turbidity meter data collected at the Sea-Tac site visit on January 28, 2002, between 11:45 and 12:08. Sample #1: Tank farm outfall 281 NTU, DM Creek (DM Cr) 31 NTU. Sample #2: Tank farm outfall 299 NTU, DM Cr 31.2 NTU. Document is AR 021688, filed in the PCHB Third Runway EIS administrative record. Relevant to water quality, stormwater, and turbidity impacts of Sea-Tac Airport tank farm on Des Moines Creek.

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