TagPollution Control Hearings Board(1532)

Email chain dated March 4, 1999 among Tom Luster, Kevin Fitzpatrick, Raymond Hellwig, and Paula Ehlers (Washington State Department of Ecology, NWRO) regarding a Friday meeting at the Army Corps of Engineers about Sea-Tac Airport Third Runway citizen group concerns. Attendees included Corps staff Tom Mueller, Gail Terzi, Jonathan Freedman, Siri Nelson, and citizen group

This document presents results from a 48-hour acute toxicity test conducted in February 1999 for the Port of Seattle, exposing water fleas (Ceriodaphnia dubia) to copper-contaminated water collected from Miller Creek. The test found that all organisms survived at concentrations up to 50 micrograms per liter, while complete mortality occurred at concentrations of 100 micrograms per liter and above. Water quality parameters including pH, dissolved oxygen, and specific conductivity were monitored throughout the test period.

Draft report (AR 041921) prepared by Parametrix, Inc. for Port Of Seattle, STIA, summarizing procedures and results of acute screening-level Ceriodaphnia dubia bioassays conducted on site water from Seattle-Tacoma International Airport in January 1999. Samples collected January 14, 1999 during a storm event at eight locations including Miller Creek Upstream of Lake Reba, Miller Creek

These are field records from a water quality sampling event conducted on January 14, 1999, at the Miller DS site near McD NC, documenting storm water measurements taken from a culvert. Samplers recorded water levels, flow rates, pH, temperature, and dissolved oxygen at 12 intervals throughout the morning. A flow-weighting calculation worksheet was used to determine subsample volumes, with a total storm flow of 122,400 units recorded from a 4x4.3 pipe.

In this January 1999 email, Dave McBride of Parametrix, Inc. responds to questions from Brian Pippin about the Manke project, clarifying that the Washington State Department of Ecology had not yet reviewed the draft report and that the client was intentionally delaying the process to gain more time. He also notes that the use of a 6-month, 24-hour storm standard was a requirement of the NPDES permit.

Port Of Seattle 1999 Airfield Project Soil Fill Acceptance Criteria for STIA airfield projects, describing criteria and review process for acceptance of fill material requested by Washington Department of Ecology in conjunction with 401 Water Quality certification. Covers geotechnical and environmental suitability standards including MTCA Method A contaminant levels, arsenic, TPH and metals analyses. Details

This 1999 Port of Seattle document outlines the criteria and review process for accepting soil fill material used in Sea-Tac International Airport (STIA) airfield construction projects. Fill material must come from approved sources—such as state-certified commercial borrow pits, contractor-certified construction sites, or Port-owned property—and generally must meet Washington State MTCA Method A environmental contamination standards. Contractors and suppliers are required to certify the quality of their materials, and independent soil technicians monitor all deliveries to ensure only safe, suitable fill is placed on airport grounds.

Hart Crowser memorandum (J-4978-03) dated December 23, 1998, from Michael Bailey P.E. and Michael Kenrick P.E. to Barbara Hinkle, Port Of Seattle, addressing hydrologic impacts of Borrow Areas 1, 3, and 4 for the Third Runway Project at Seattle-Tacoma International Airport. Discusses impacts on baseflow to Des Moines Creek and riparian wetlands, including runoff reduction,

Washington State Department of Ecology, Water Quality Program publication (WQ-R-95-80, revised December 1998) providing laboratory guidance and Whole Effluent Toxicity (WET) test review criteria. Covers WET testing requirements in NPDES permits, options for permittees, invalid test criteria including EPA statistical flowcharts, negative controls, test termination, acceptable start counts, pH adjustment, randomization, and power standards. Also

Hart Crowser letter (project J-4978-03) to Barbara Hinkle, Health Safety & Environmental Services, Port Of Seattle, dated December 9, 1998, addressing aquifer compaction beneath the proposed Third Runway embankment at Sea-Tac Airport in response to U.S. Army Corps of Engineers questions on hydrogeologic impacts. Analysis covers the Shallow Aquifer (contributing to Miller Creek base flow),