TagACC(1531)

Report prepared by Kevin V. Brix and David K. DeForest of Parametrix, Inc. for the International Lead Zinc Research Organization, International Copper Association, and Nickel Producers Environmental Research Association (NiPERA), April 2000. Reviews bioconcentration factors (BCFs) for metals including cadmium, copper, lead, nickel, silver, and zinc in aquatic organisms (fish, bivalves, invertebrates, algae, diatoms). Covers

Email chain dated March 28, 2000 among Kevin Fitzpatrick (Ecology NWRO Industrial Permit Unit), Tom Luster, Pat Svoboda, Erik Stockdale, and Greg Wingard regarding groundwater and surface water issues related to the proposed Sea-Tac Airport Third Runway. Fitzpatrick disputes Greg Wingard’s claim that Ecology’s NWRO admitted the third lagoon expansion of the Industrial Waste System

Hart Crowser draft subsurface conditions data report (project J-4978-18) prepared for Port Of Seattle and HNTB, dated March 20, 2000, covering the North Safety Area Third Runway Embankment at Sea-Tac International Airport. Report includes generalized geologic description, subsurface soil conditions, hydrogeologic conditions, laboratory test results (consolidation, CU triaxial, UU triaxial, direct shear tests), hydraulic conductivity

Figure 7.2-10 showing groundwater contour elevations on the Auburn Wetland Mitigation Site as of March 8, 2000. Map displays piezometer locations (P-1 through P-23), groundwater contour lines with elevations ranging from approximately 45.5 to 48.5 feet, existing wetland areas, and existing ground surface contours near the Green River. Handwritten annotations reference spring groundwater levels, 0.15-foot

A March 2000 Parametrix memorandum reports the results of pesticide and herbicide soil testing at the Vacca Farm site, part of the Port of Seattle's Third Runway Project. Of 59 compounds tested, only 12 were detected, primarily organochlorine pesticides, with Dieldrin slightly exceeding cleanup levels in shallow soil samples at two locations in the proposed floodplain area. The memo recommends removing the upper six inches of soil from the floodplain area for offsite disposal, while concluding that the proposed Miller Creek relocation corridor does not pose unacceptable risks to human health.

SEPA Addendum (April 27, 2000) prepared by Port Of Seattle and FAA as addendum to the Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport (STIA), and to the SEPA Environmental Checklist for the Auburn Wetland Mitigation Project (August 1998). Documents modification to Master Plan Update wetland

A February 2000 draft memo from environmental consultants Parametrix summarizes testing and monitoring data concluding that stormwater runoff from Seattle-Tacoma International Airport (STIA) does not harm aquatic life in nearby Miller and Des Moines Creeks. Three lines of evidence are presented: whole effluent toxicity tests showing most outfalls are non-toxic, water effect ratio studies demonstrating that creek water significantly reduces copper toxicity, and metals monitoring confirming that copper concentrations in the creeks fell below water quality standards. The one outfall found to be toxic (SDN1) was traced to zinc leaching from galvanized rooftops, with the Port of Seattle pursuing corrective measures.

A February 2000 draft memorandum from Parametrix, Inc. outlines a scope and budget for range-finding Water-Effect Ratio (WER) studies using receiving water from Miller and Des Moines Creeks, conducted in connection with stormwater discharge permitting near the Port. The studies involve acute toxicity tests with copper-spiked water to determine whether site-specific water quality standards could be higher than generic state standards, potentially eliminating the need for a mixing zone. Estimated costs range from $2,110 for one creek site to $2,650 for two sites.

A February 2000 draft memorandum from Parametrix, Inc. outlines a scope and budget for range-finding Water-Effect Ratio (WER) studies using receiving water from Miller and Des Moines Creeks, intended to help determine whether copper discharge standards at a Port facility could be adjusted through site-specific water quality criteria. The studies involve acute toxicity tests comparing copper-spiked site water to copper-spiked laboratory water, with estimated costs ranging from $2,110 for one site to $2,650 for two sites. Results from earlier 1999 range-finding tests suggested WERs high enough to potentially justify more definitive studies, but new tests without mixing zone assumptions were recommended to better assess achievable permit limits.

Email from Erik Stockdale (Ecology NWRO) to Raymond Hellwig and Tom Luster, dated February 17, 2000, summarizing a February 15 meeting with Jim Kelley of Parametrix regarding public comments on the Sea-Tac Airport third runway project (AR 018438–018440, Exhibit 173). Issues raised by commenters Sarah Cooke and Andy Castelle concerned incorrect wetland mitigation ratio calculations