Notes
Declaration of Paul S. Fendt (Professional Engineer, Parametrix Inc.) filed in PCHB case 01-133, Airport Communities Coalition v. Department of Ecology and Port Of Seattle. Fendt, project manager for stormwater management and low flow mitigation for the Port Of Seattle Master Plan Update (MPU), describes hydrology of Miller Creek and Des Moines Creek watersheds as they relate to Sea-Tac International Airport (STIA). Details 106 acres of new impervious area draining to Miller Creek, 6 acres to Walker Creek, 128 acres to Des Moines Creek, and 344.1 acre-feet of new stormwater detention storage. Discusses NPDES stormwater permits, HEC-1, HEC-2, HEC-RAS modeling, Industrial Wastewater System (IWS), Puget Sound discharge, low flow impact mitigation, and the Low Flow Analysis — Flow Impact Offset Facility Proposal. References King County Surface Water Design Manual and Department of Ecology Stormwater Manuals.