TagSea-Tac Airport(1835)

In a October 2000 letter to the Port of Seattle, Water Resources Consulting LLC — writing on behalf of the Airport Communities Coalition — raised concerns about the SeaTac Aircraft Hydrant Fueling System project, arguing that construction should be delayed until an ongoing groundwater contamination study under the Model Toxics Control Act was completed. The letter criticized the project's environmental review (Declaration of Nonsignificance) for lacking specific details about leak detection, operating pressures, and contaminated soil management. The consultant warned that deep utility trenching could create preferential flow paths for existing fuel contaminant plumes, potentially threatening the groundwater supplies relied upon by nearby communities.

Memorandum dated October 20, 2000 from Michael A.P. Kenrick, P.E. and Michael J. Bailey, P.E. of Hart Crowser to Jim Thomson of HNTB regarding Sea-Tac Third Runway Borrow Area 3 wetland preservation, project J-4978-06, prepared for Port Of Seattle. Covers hydrology sustaining Wetlands 29, B9, 30, B7, B6, and B5 in Borrow Area 3, including

Memorandum dated October 20, 2000 from Michael A.P. Kenrick, P.E. and Michael J. Bailey, P.E. of Hart Crowser to Jim Thomson at HNTB Boston, regarding Sea-Tac Third Runway Borrow Area 3 wetland preservation (project J-4978-06). Document provides conceptual design for a proposed drainage swale to protect wetlands in Borrow Area 3 located south of Sea-Tac

Memorandum dated October 20, 2000 from Michael A.P. Kenrick, P.E., and Michael J. Bailey, P.E. of Hart Crowser to Jim Thomson at HNTB (project J-4978-06), prepared for Port Of Seattle regarding Sea-Tac Third Runway Borrow Area 3 wetland preservation. Reviews hydrology sustaining Wetlands 29, B9, 30, B7, B6, and B5 in Borrow Area 3, located

STIA Construction Site Stormwater Monitoring reports dated 10/16/2000 and 10/20/2000, samplers JL/RS and JB/RS. AR017259–AR017261. Documents turbidity and pH measurements at multiple construction sites including Logistics Site Development (unnamed catch basin, Tyee Pond, IWS Lagoon 3), MWS Lagoon 3 Construction treatment facility, Airfield Improvement (construction staging area, SDS-7, SDS-6, SDS3-594), Dobbs Flight Kitchen Remodel (SDE4-611,

Email dated October 18, 2000 from Tom Luster (Ecology) to Raymond Hellwig, Paula Ehlers, Kevin Fitzpatrick, and Joan Marchioro (ATG) regarding Sea-Tac Airport Section 401 water quality certification requirements. Luster notes his minority opinion on what the Port of Seattle and Ecology must do to meet 401 requirements, and provides drafty notes from a prior

STIA Construction Site Stormwater Monitoring reports dated 10/16/00 and 10/20/00, samplers JL/RS and JB/RS. Documents turbidity and pH measurements at multiple Sea-Tac Airport construction sites including Logistics Site Development (Tyee Pond, Des Moines Creek outfall), MWS Lagoon 3 Construction, Airfield Improvement (SDS3-594, SDS-6, SDS-7), Dobbs Flight Kitchen Remodel (SDE4-611, SDE4-607, SDE4-615, SDE4-601, SDE4-602), Booster Pump

This October 2000 internal memo from Roger Nye to TCP Section Head Steve Alexander explains the history of the Agreed Order between Washington State Ecology and the Port of Seattle regarding environmental cleanup at Sea-Tac Airport. It describes how the Port agreed to conduct a large-scale groundwater evaluation under an Agreed Order, with the understanding that a risk-based cleanup remedy scenario would be developed if contamination risk proved low. The memo also notes that the Agreed Order intentionally excluded language about remedial actions, with Ecology reserving the right to formally intervene if cleanup became necessary.

Memorandum dated October 13, 2000 from Michael Bailey P.E. and Michael Kenrick P.E. of Hart Crowser to Jim Thomson P.E. at HNTB (project J-4978-06), analyzing infiltration into the proposed Third Runway embankment at Sea-Tac Airport and effects on shallow water-bearing zone base flow to Miller Creek and adjacent wetlands. Analysis uses three sequential models —

Email chain AR 018494 in which Erik Stockdale (Washington State Department of Ecology, ESTO461@ECY.WA.GOV) sends internal memo to Gail Terzi and Jonathan Freedman (Army Corps of Engineers) outlining status of the natural resource mitigation plan and associated documents for Sea-Tac Airport expansion. Stockdale notes the Port of Seattle is objecting to Ecology’s choice of consultant