Notes
Exhibit 427 (AR 022393). Annual stormwater monitoring report prepared by Port of Seattle for Seattle-Tacoma International Airport (STIA) covering the period June 1, 1997 through June 30, 1998, submitted to Washington State Department of Ecology in November 1998. Report includes sampling results for subbasins SDN2, SDS1, SDE4, and Taxi Yard; analytes include fats/oils/grease (FOG), total petroleum hydrocarbons (TPH), fecal coliforms, suspended solids, turbidity, biochemical oxygen demand (BOD5), ammonia, surfactants, and metals. Covers deicing event samples, best management practices (BMPs) performance, pollutant source tracing for SDE4, runway skid mark material removal, and NPDES permit compliance. Filed in PCHB third-runway EIS administrative record.