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This document contains replacement pages developed m response to comments received from the Washington State Department of Ecology (Ecology) on Volumes l through 4 of the December 2000 Comprehensive Stormwater Management Plan (SMP) for the Seattle-Tacoma International Airport Master Plan Update Improvements. A facilitated process was used to document specific revisions required by Ecology to the December 2000 SMP. Each SMP volume contains an itemized list of replacement pages, and the replacement pages are identified by a July 2001 footer. Comprehensive Stormwater Management Plan July 2001 STIA Ma_ter Plan Update Improvements 556-2912-001(28) AR 046368 SMP VOLUME 1 JULY 2001 REPLACEMENT PAGES Preface (beforepg. i) List of Volume 1 Replacement Pages Certificate ofEnmneer (.pg.i) Table of Contents (pgs. ii, iii, iv, and v) Section 2.1.2 (pg. 2-2) Section 2.2.2 (pg. 2-6) Sections 3.2 and 3.3 (pgs. 3-7, 3-7a, and 3-8) Fiumre4-1 (pg. 4-2) Figure 4-2 (pg. 4-3) Table 4-1 (pg. 4--4) Section4.2(pg.4-5) Figure 4-3 (pg. 4-6) Section 4.2.2.1 (pgs. 4-8 and _8a) Table 4-3 (pg. 4-9) Table 4-5 (pg. 4-11) Table 4-6 (pg. 4-14) Figure 4-4 (pg. 4-16) Section 4.5.3.1 (pg. 4-20) Section 5.1 (pg. 5-1) Figure 5-1 (pg. 5-2) Figure 5-2 (pg. 5-3) Section 5.2.1 (pg. 5-4) Figure 5-3 (pg. 5-5) Section 6.1.2.4 (pg. 6-2) Sections 6.1.3, 6.2.1.1, 6.2.1.2, and 6.2.1.3 (pgs. 6-3 through 6-10) Section 6.2.2 (pg. 6-11) Section 6.4.4 (pg. 6-12) Figure 7-1 (pg. 7-2) Section 7.1.2.5 (pgs. 7-8 and 7-8a) Section 7.1.4.1 (pg. 7-9) Section 7.2 (pg. 7-12) Table 7-8 (pg. 7-13) Section 7.8 (pg. 7-23) Section…

Kevin V. Brix and David K. DeForest P_ram_rix, Inc. 5808 Lake Washington Blvd. NE K.irkland, WA 98033 April 2000 555-3690-001 AR 044580 1172 TABLE OF CONTENTS Page EXECUTIVE S_Y .................................................................................................................. iv 1. INTRODUCTION ..................................................................................................................... 1 2. REVIEW OF METAL BIOACCUMLKATION ..................................................................... 3 2.1 METAL ESSENTIALITY ........................................................................................... 3 2.2 HOMEOSTATIC CONTROL OF METALS .............................................................. 4 2.2.1 Cadmium .......................................................................................................... 6 2.2.2 Copper .............................................................................................................. 7 2.2.3 Lead .................................................................................................................. 8 2.2.4 Nickel ................................................................................................................ 8 2.2.5 Silver ................................................................................................................. 8 2.2.6 Zinc ................................................................................................................... 9 2.2.7 Summary ......................................................................................................... 10 2.3 RELATIONSHIP BETWEEN WATER CONCENTRATIONS AND BCFS ......... 10 3.3.1 Metal-Specific Examples ............................................................................... 11 2.3.2 Interpretation .................................................................................................. 24 2.4 BIOACCUMUIATION AS AN INDICATOR OF CHRONIC TOXICITY FOR METALS AND METAL COMPOUNDS ........................................................ 29 2.4.1 Relationships Between BCFs and Chronic Toxicity ..................................... 30 2.4.2 Species Sensitivity Distributions .................................................................... 32 2.5 SECONDARY POISONING AND BIOMAGNIFICATION OF METALS AND METAL COMPOUNDS .................................................................................. 45 2.5.1 Metals and Inorganic Metallic Compounds ................................................... 47 2.5.2 Organomctallic Compounds .......................................................................... 52 2.5.3 Conclusions on Secondary Poisoning ............................................................ 53 3. CONCLUSIONS ..................................................................................................................... 54 J 4. REF]_--eR]_NCE S ........................................................................................................................ 56 APPENDICES A DATABASE OF BIOCONCENTRATION FACTORS (BCFs) Critical Review of the Use of ii April 2000 Bioaccumulation Potential for Hazard 555-3690-001 (01) Classification of Metals and Metal Compounds i_tmczaAro_i_voLioarA_J • - _.m t,_ zooo>._.¢ AR 044581 LIST OF FIGURES Figure Page Metal BCFs for Algae and Diatoms ........................................................................................ 12 Cadmium BCFs for Fish ......................................................................................................... 14 Cadmium BCFs for Non-Bivalve Invertebrates ..................................................................... 15 Cadmium BCFs for Bivalves .................................................................................................. 16 Copper BCFs for Non-Bivalve Invertebrates ......................................................................... 18 Copper BCFs for…

for the period July 1, 1996 through May 31, 1997 ] Port of Seattle -I I" September 29, 1997 | prepared by Scott Tobiason Port of Seattle Environmental Services RECEIVED FEB 88 2OOZ DEPTOFECOLOGY AFt033510 Exhibit-2090 J Introduction ,1 This report is submitted to the Washington Department of Ecology (WDOE)n j_ pursuant to Special Condition S.9 of the NPDES permit. This report collects and analyzes stormwater data collected in the past 4 quarters. Water quality data J from STIA's stormwater discharges is compared to relevant regional and national data on both a concentrationand unit load basis. Because many capital BMPs J were institutedduring the current data collection period, improvements in water quality will be discussed in more detail in the next annual report. j J Figure 1 shows the individualstormwater drainage basins and the STIA n Stormwater Management Boundary. Note that only colored subbasins drain to theB J storm system, white or blank areas near the terminals and gates drain to the Industrial Waste System (IWS) which drains runoff to the IndustrialWaste pl. Treatment Plant (IWTP). Monitoringdata from the IW'I'P are not included in this -_ report. J Sources of Reported Data J Data reported and analyzed in this annual report are limitedto discharges from stormwater ouffalls only and include: J • Quarterly and annual monitoring required by the NPDES permit; • Sampling specified by the Stipulated Agreement (Brasher, et. al., 1995);I! j • Stormwater Receiving Environment Study (SRES, Condition S.8 of theSTIA NPDES permit), and J runway deicing study…

For the Proposed Master Plan Update Development Actions At Seattle-Tacoma International Airport and SEPA Environmental Checklist Auburn Wetland Mitigation Project May 5, 2000 AR 044544 1171 ,m Addendum to the Final Supplemental Environmental Impact Statement For the Proposed Master Plan Update Development Actions And SEPA Environmental Checklist for the Auburn Wetland Mitigation Project This document is a State Environmental Policy Act (SEPA) Addendum to the Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport issued May 13, 1997 by the Federal Aviation Adminisffation (FAA) and the Port of Seattle, and the SEPA Environmental Checklist for the Auburn Wetland Mitigation Project issued August 1998. This addendum has been prepared in accordance with Chapter 197-11-625 of the Washington Administrative Code, and Port of Seattle SEPA Policies and Procedures Resolution No. 3028. The purpose of this document is to describe and analyze the modification to the Master Plan Update Development Actions for mitigating proposed wetland fill, and to modify the SEPA environmental checklist. These modifications do not substantially change the analysis of significant impacts described in the Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport or the Environmental Checklist for the Auburn Wetland Mitigation Project. PROJECT NAME Port of Seattle Master Plan Update Improvement Actions at Seattle-Tacoma International Airport - Auburn Wetland Mitigation Project (POS SEPA No. 00-07) EXISTING ENVIRONMENTAL DOCUMENTS Final Environmental lmpact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International…

forthe period June 1, 1997 through June 30, 1998 "_Port of Seattle November 1998 AR 033384 Exhibit-2089 TABLE OF CONTENTS LIST OF TABLES ............................................................................................ ,............... ii LIST OF FIGURES ......................................................................................................... iv LIST OF ACRONYMS ..................................................................................................... v EXECUTIVE SUMMARY........................................................................................... ES-1 1.0 INTRODUCTION .............................................................................................. 1-1 2.0 METHODS ....................................................................................................... 2-1 2.1 GENERAL .............................................................................................. 2-1 2.2 DESCRIPTION AND CATEGORIES OF SUBBASINS ........................... 2-1 2.3 SAMPLING LOCATIONS ........................................................................ 2-2 2.4 STORM SAMPLING PROCEDURES ANDANALYTES .......................... 2-3 3.0 SAMPLING RESULTS ..................................................................................... 3-1 3.1 GENERAL .............................................................................................. 3-1 3,1.1 Method of Data Presentation and Comparisons........................... 3-1 3.2 GRAB SAMPLE RESULTS ..................................................................... 3-3 3.2.1 Fats, Oils,and Grease (FOG) and Total Petroleum Hydrocarbon(TPH) ....................................................................... 3-3 3.2.2 Fecal Coliforms............................................................................. 3-5 3.3 COMPOSITE SAMPLE RESULTS .......................................................... 3-5 3.3.1 Suspended Solids and Turbidity................................................... 3-6 3.3.2 BiochemicalOxygen Demand (BODs).......................................... 3-6 3.3.3 Ammonia ...................................................................................... 3-7 3.3.4 Surfactants ................................................................................... 3-8 3.3.5 Metals ............................................................................................ 3-8 3.3.6 Deicing Event Samples ............................................................... 3-12 November1996 i 976079.23 AR 033385 TABLE OF CONTENTS 4.0 PERFORMANCE OF BEST MANAGEMENT PRACTICES ..................... i........ 4-1 4.1 GENERAL .............................................................................................. 4-1 4.2 SDN2 BMPs............................................................................................ 4-1 4.3 SDS1 BMPs ............................................................................................ 4-2 4.4 SDE4 BMPs ............................................................................................ 4-3 4.5 TAXI YARD BMPs ........ _......................................................................... 4-4 4.6 SUBBASIN SDE4: POLLUTANT SOURCE TRACING ........................... 4-5 4.7 RUNWAY SKID MARK MATERIAL REMOVAL ...................................... 4-5 4.8 OTHER BMPs......................................................................................... 4-6 5.0 CONCLUSIONS ............................................................................................... 5-1 6.0 IDENTIFIED NEW INITIATIVES ....................................................................... 6-1 7.0 REFERENCES ................................................................................................. 7-1 LIST OF TABLES TABLE 1 SUMMARY OF SAMPLING CHANGES UNDER NEW PERMIT TABLE 2 OUTFALL NOMENCLATURE CROSS REFERENCE TABLE 3 OFFSITE INFLUENCES IN STIA MONITORING LOCATIONS TABLE 4 POLLUTANT ANALY'rES,…

* Note: This document contains the Department of Naturai Resources proposed rules for implementing King County Adopted Ordinances 13189, 13190, and 13191. These ordinances are effective as of _ September 1, 1998. The proposed rules are &aft pending approval by the King County Executive. Printed on Recycled Paper Exhibit-2068 KING COUNTY, WASHINGTON SURFACE WATER DESIGN MANUAL King County Department of Natural Resources September 1998 Printedon Recycled Paper AR 031749 King County Executive Consultants Ron Sims Rick Schaefer, P.E., formerly RW Beck & Associates Malcom Leytham, PhD, P.E., Northwest Hydraulic Metropolitan King County Council Consultants Maggi Fimia, District 1 Gary Minton, PhD, P.E. Cynthia Sullivan, District 2 Carlos Herrera, P.E., Herrem Environmental Consultants Louise Miller, District 3 Beth Schmoyer, P.E., formerly Herrera Environmental Larry Phillips, District 4 Mark Ewbank, P.E., Herrera Environmental Consultants Dwight Pelz, District 5 Mike Giseburt, P.E., R.W. Beck & Associates Rob McKenna, District 6 Sarah Spear Cooke, Ph.D., Cooke Scientific Services Pete von Reiehbauer, District 7 SvR Design Company Greg Nickels, District 8 Kent Pullen, District 9 Department of Development and Environmential Larry Gossett, District 10 Services (DDES) Jane Hague, District 11 Robert Derrick, Director Brian Derdowski, District 12 Greg Kipp, Deputy Director Chris Vance, District 13 Contributing Staff (DDES) Department of Natural Resources (DNR) Joe Miles, P.E., Supervising Engineer Pam Bissonette, Director Jeff O'Neill, P.E., Supervising Engineer Kurt Triplett, Deputy Director Ann Bethel, Engineer Jim Kramer, Former Deputy Director Richard Lowe, P.E., Senior Engineer Jeff Stern, Program Analyst Water and Land Resources Division (WLRD) Nancy Hansen,…

5808 LaKe Washington Btv_.. N.E Suite 200 Kirklana. WA 98033-7350 425-822-8880 * Fax: 425-889-8808 • www.paramemx.com P MEMORANDUM To: Jonathan Freedman, U. S. Army Corps of Engineers From: Jim Kelley, Wetland Ecologist cc: Elizabeth Leavitt, Port of Seattle Date: May 3, 2000 Re: Analysis of indirect impacts to wetlands from the temporary SR-5O9 interchange - Seattle- Tacoma International Airport This memorandum provides an overview of the SR-509 Temporary Interchange at South 176th Street, a description of current conditions at the site, and evaluates the potential impacts to adjacent wetlands that may result from the project. The interchange project involves no discharge of fill material into waters of the United States including wetlands. Furthermore, we have analyzed potential indirect impacts to wetlands and concluded that no significant indirect impacts to wetlands will occur. The interchange is also •constructed on existing road fill and other disturbed areas that do not act as buffers to protect the functions of adjacent wetlands. PROJECT OVERVIEW To provide construction vehicles direct access from SR-509 to the west side of Seattle- Tacoma International Airport (STIA 1.a temporary interchange would be constructed near the existing South 176d' Street overpass."Re hal'f-diamond interchange would consist of an exit ramp from southbound SR-509 to South 176th Street and an entrance ramp from 176 thStreet to northbound SR-50cL The Port will use the interchange as part of its fill haul route during construction of the /'bird runway, as described in the 1996 Final Environmental Impact Statement (EIS) and 1997 Final Supplemental EIS…

3.2.5 Subsequent WET Testing and Chelation Results ............................ 22 Conclusions.................................................................................................. 29 References ................................................................................................... 31 Appendices .................................................................................................. 35 6.1 Appendix A WET Testing Data Summary ............................................. 37 6.2 Appendix B Photographs....................................................................... 41 6.3 Appendix C Source Tracing Results ..................................................... 45 6.4 Appendix D Matrix for Interpreting Chelation Test Results ................... 49 List of Tables Table 1 WET Testing Summary ........................................................................ 12 Table 2 Additional WET Test Metrics ............................................................... 12 Table 3 Chelation Testing Results .................................................................... 27 Table 4 Synthetic Runoff WET Test Results ..................................................... 28 AP, 044475 Table 5 SyntheticRunoffMetals Concentrations(mg/l).................................... 28 List of Figures Figure1 STIAStormDrainageMap .................................................................... 9 Figure2 Boxplotof Zinc in STIA StormwaterSamples..................................... 14 Figure3 SDN1 SubbasinMap .......................................................................... 17 Figure4 SamplingLocations............................................................................. 18 Figure5 Copperin InitialScreeningGrab Samples.......................................... 22 Figure6 Zinc in InitialScreeningGrab Samples............................................... 23 Figure7 Copper incompositeSamples............................................................ 27 Figure8 Zinc in compositesamples.................................................................. 28 AR 044476 ACKNOWLEDGEMENTS The Portthanksthe staffof TaylorAssociatesfor their diligence,skilland ingenuityin stormwatersamplecollection,AquaticResearch, Incorporatedfor theirflexibilityand availabilityinhandlingtheanalyticalwork,and Pararnetrix, Incorporatedfor theirhighqualitysupportin WET testingandforassistingwith the novelapproachfor source-tracing. AR 044477

This document is a StateEnvironmental Policy Act (SEPA) Addendum to the Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport issued May 13, 1997 by the Federal Aviation Administration (FAA) and the Port of Seattle, and the SEPA Environmental Checklist for the Auburn Wetland Mitigation Project issued August 1998. This addendum has been prepared in accordance with Chapter 197-I 1-625 of the Washington Administrative Code, and Port of Seattle SEPA Policies and Procedures Resolution No. 3028. The purpose of this document is to describe and analyze the modification to the Master Plan Update Development Actions for mitigating proposed wetland fill, and to modify the SEPA environmental checklist. These modifications do not substantiallv change the analysis of significant impacts described in the Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport or the Environmental Checklist for the Auburn Wetland Mitigation Project. PROJECT NAME Port of Seattle Master Plan Update Improvement Actions at Seattle-Tacoma International Airport - Auburn Wetland Mitigation Project. EXISTING ENVIRONMENTAL DOCUMENTS Final Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport, U.S. Department of Transportation (USDOT), FAA, and Port of Seattle, February 1996 Final Supplemental Environmental Impact Statement for the Proposed Master Plan Update Development Actions at Seattle-Tacoma International Airport, US DOT, FAA, and Port of Seattle, May 1997 SEPA Environmental Checklist for the Port of Seattle Master Plan Improvements Wetland Mitigation Project, Port of Seattle, August…

-- = . .mR i li i iiii i I III Seattle-Tacoma International Airport Third Runway Embankment Fill Water Quality and Transport Analysis FINAL O S.S. PAPADOPULOS & ASSOCIATES, INC. February15,2002 AR 053402 ]32o _-_ ii n ipl II II II lUl Seattle-Tacoma International Airport Third Runway Embankment Fill Water-Quality and Transport Analysis FINAL Prepared For: " Portof Seattle Prepared by: (_ S.S. Papadopulos and Associates, Inc.101 N. Capital Way, Suite 107, Olympia, WA 98501 Telephone: 360/709-9540 February 15, 2002 AR 053403 Table of Contents Page .o* List of Figures ....................................................................................................................... m ... List of Tables ...................................................................................................................... m Section 1.0 Introduction 1 1. l Background ................................................................................................... 1 1.2 Objective ....................................................................................................... 1 1.3 Approach ....................................................................................................... 1 Section 2.0 Embankment Fill Criteria 3 2.1 Soil Criteria ................................................................................................... 3 2.2 Water-Quality Criteria ................................................................................... 3 Section 3.0 Data Analysis 4 3.1 Soil Testing ................................................................................................... 4 3.1.I Chemical Analysis of Soils ...................................................................... 4 3.1.2 Adsorption Capacity ................................................................................. 4 3.2 Synthetic Precipitation Leaching Procedure .......................................................... 5 Section 4.0 Numerical Modeling Analysis 6 4.1 Model Configuration ..................................................................................... 6 4.2 Model Parameters .......................................................................................... 7 4.2.1 Flow Parameters ....................................................................................... 7 4.2.2 Transport Parameters ................................................................................ 8 4.3 Initial and Input Values ................................................................................. 9 4.3.1 Flow Values .............................................................................................. 9 4.3.2 Transport Values ...................................................................................... 9 4.4 Simulations .................................................................................................. 10 4.4.1 General Embankment Fill ...................................................................... 10 4.4.2 Harem Creek Fill .................................................................................... 10 4.4.3 First Avenue Bridge Fill and Black River Quarry Fill ........................... 11 4.4.4 Sensitivity Analysis ................................................................................ 11 4.5 Modeling Results ......................................................................................... 12 AR 053404 4.5.1 Transport of Metals ................................................................................ 12 4.5.2…