TagStormwater(385)

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

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.

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,

Email from Steve Saunders (November 21, 1998) to Melodie Selby, Robert Barwin, John Glynn, Carl Nuechterlein, and others, recommending that Melodie Selby and Bill Moore take lead on CWA Sections 401 and 402 coordination due to stormwater and BMP manual focus. Attached is a Washington State Department of Ecology Water Quality Program summary memo analyzing

This November 1998 report presents the Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport, covering the period from June 1, 1997 through June 30, 1998, prepared by the Port of Seattle. It documents stormwater sampling results from various airport subbasins, including measurements of pollutants such as metals, oils, grease, fecal coliforms, and deicing chemicals. The report also evaluates the performance of Best Management Practices (BMPs) implemented across the airport to manage and reduce stormwater contamination.

Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA) covering the period June 1, 1997 through June 30, 1998, prepared by Port of Seattle, received by Washington State Department of Ecology on December 1, 1998 (AR 033384). Report covers stormwater sampling results from airport subbasins including SDN2, SDS1, SDE4, and Taxi Yard; analytes include fats/oils/grease

Stormwater Pollution Prevention Plan (SWPPP) for Seattle-Tacoma International Airport (Sea-Tac Airport), prepared by Port Of Seattle, originally November 1998 with Revision 1 (April 1999) and Revision 2 (December 2001). AR 052594. Covers drainage system description, potential pollution sources and Best Management Practices (BMPs) for aircraft servicing, ground anti-icing/deicing of roads and paved surfaces, snow storage,

This Stormwater Pollution Prevention Plan (SWPPP), prepared by the Port of Seattle for Seattle-Tacoma International Airport in November 1998 (with revisions through December 2001), outlines strategies and best management practices (BMPs) to prevent pollutants from contaminating stormwater runoff at Sea-Tac Airport. The plan covers a range of potential pollution sources including aircraft servicing, deicing operations, spills, construction sites, and vehicle maintenance, and describes the airport's drainage systems and inspection requirements under its NPDES permit. It serves as a regulatory compliance document ensuring that airport operations minimize their impact on local water quality.

Draft internal memo dated October 29, 1998 from Tom Luster to Gordon White, Paula Ehlers, and Tom McDonald at Washington State Department of Ecology (Exhibit 2112, AR 033725–033727). Addresses two issues arising from Ecology’s 401 certification review of Sea-Tac Airport (Port of Seattle): (1) whether WAC 173-201A-160(3) water quality standards require stormwater discharges to meet