Notes
Letter dated September 21, 2000 from Northwest Hydraulic Consultants (nhc) to Gordon White, Program Director, Shorelands and Environmental Assistance Program, Washington State Department of Ecology, submitted on behalf of the Airport Communities Coalition (ACC). Provides preliminary comments (Set 1) on the August 2000 Stormwater Management Plan (SMP) for the Seattle-Tacoma International Airport Master Plan Update third runway development at Sea-Tac Airport. Identifies numerous deficiencies in proposed stormwater detention facilities across basins SDN1, SDN-6, NEPL, SDN2X/SDN4X, SDN3X, SDN3A, SDW1A, SDW2, SDN3A, SDS-7, SDS3-A, SDS-3, SASA, SDS 2/5/6, and Des Moines Creek, citing King County SMP review by Pam Bissonnette (September 15, 2000) finding facilities fail HSPF model verification, Level 2 performance standards, and KCSWDM requirements. References 401 Certification application, Natural Resources Mitigation Plan, Miller Creek, HSPF INP model, KCRTS, and Pacific Groundwater Group review. Document is Exhibit AR018976 filed in PCHB third-runway-eis administrative record.