EXH0006017110

for the period July 1, 2000 through June 30, 2001 September 2001 ¢oP' AR 017110 ,-_' Pe't of Seattle Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport for the period July 1, 2000 through June 30, 2001 September 2001 Prepared by Scott Tobiason Environmental Management Specialist Aviation Environmental Programs Port of Seattle AR 017111 Table of Contents Executive Summary ..................................................................................... 1 Introduction..................................................................................................... 5 Background ........................................... ......................................................... 7 3.1 Sea-Tac International Airport.................................................................... 7 3.2 STIA Storm Drainage Subbasins .............................................................. 8 3.3 Sampling locations ................................................................................. 10 3.4 Storm sampling procedures and analytes .............................................. 12 Sampling Results ................................ . ......................................................... 17 4.1 General ................................................................................................... 17 4.2 Data Presentation Methods .................................................................... 17 4.3 Storm events sampled ............................................................................ 18 4.4 Grab Sample Results ............................................................................. 22 4.4.1 Total Petroleum Hydrocarbons (TPH) ............................................... 22 4.4.2 Fecal Coliforms ................................................................................. 24 4.5 Composite Sample Results .................................................................... 27 4.5.1 Suspended Solids and Turbidity ....................................................... 28 4.5.2 Biochemical Oxygen Demand (BODE) .............................................. 30 4.5.3 Metals ............................................................................................... 32 4.6 Deicing Event Samples .......................................................................... 38 4.6.1 Background...................................................................................... 39 4.6.2 Current Results ................................................................................. 40 4.7 Other Results .......................................................................................... 43 4.7.1 Field Quality Control Samples .......................................................... 44 4.7.2 Source Tracing Studies .................................................................... 44 4.8 Ouffall Inspections .................................................................................. 50 Conclusions .................................................................................................. ,53 References ................................................................................................... 55 Appendices ......................................................................................................... 61 Appendix A Storm Event Hydrologic and Hydraulic Data .................................. 63 Appendix B Tabular NPDES Sample Data Summaries ..................................... 68 AR 017112 AppendixC TabularDeicingEventSample Data Summaries......................... 111 AppendixD Other Sample Data ....................................................................... 133 AppendixE Outfall InspectionSummary.......................................................... 135 List of Tables Table 1 Nomenclaturefor Ouffallslistedin NPDES PermitConditionS2B .......... 9 Table…

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Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]