Lower Duwamish Waterway
Source Control Investigation

• Figure 1-1 Site Location, North Boeing Field/Georgetown Steam Plant
• Figure 2-1 Storm Drain Lines in the Vicinity of NBF-GTSP Site
• Figure 3-1 Georgetown Steam Plant: Current Site Features
• Figure 3-2 GTSP Historical Site Features
• Figure 3-3 GTSP Drainage Ditch and Excavation Sampling Locations, 1984-1985
• Figure 3-4 GTSP Soil Sample Locations, 1987-2008
• Figure 3-5 GTSP/NBF Fence Line Soil Sampling Locations
• Figure 3-6 Groundwater Flow Direction, Georgetown Steam Plant
• Figure 3-7 GTSP Flume
• Figure 4-1 North Boeing Field SiteFigure 4-2 Storm Drain System at North Boeing Field
• Figure 4-3 Storage Locations and Tanks, North Boeing Field
• Figure 4-4 North Boeing Field Areas of Investigation
• Figure 4-5 Areas of Investigation: Propulsion Engineering Lab (PEL) Area
• Figure 4-6 PCB Soil Investigation (2007) and Tanks BF-4, BF-5, and BF-6 (2006)
• Figure 4-7 Soil Samples Associated With Storm Drain Line Replacement (2007)
• Figure 4-8 Investigation of PCB Sources to Slip 4 (2008) and Soil and Catch Basin Investigation (2008), Propulsion Engineering Labs Area
• Figure 4-9 UBF-25 Removal (1989) and Dead Tree Investigation (1990)
• Figure 4-10 Oil/Water Separator UBF-55 and UBF-27 (1997)
• Figure 4-11 Storm Drain Re-Route (2006)
• Figure 4-12 Building 3-301 Environmental Assessment (1994)
• Figure 4-13 Building 3-333 Assessments and Remedial Excavation (1994-1996)
• Figure 4-14 Building 3-333 Phase I Construction, Interim Remedial Action (1996)
• Figure 4-15 Building 3-333 Phase II Construction, Assessments and Remedial Action (1997)
• Figure 4-16 Building 3-335, Environmental Assessment (1998)
• Figure 4-17 Former F&G Facility, Environmental Assessments (1986, 1993-1994)
• Figure 4-18 Former Building 3-304, Environmental Assessments (2000-2001)
• Figure 4-19 Former Tanks NBF-28 and NBF-29 (1985-1986)
• Figure 4-20 Building 3-353 Assessment and Remedial Excavation (1989-1990)
• Figure 4-21 Green Hornet Area Assessments and Remedial Excavation (1985-1986 and 1992-
  1994)
• Figure 4-22 Building 3-354, Assessment and Remedial Excavation
• Figure 4-23 Areas of Investigation: Central Area of North Boeing Field
• Figure 4-24 Utilidor Project (1990)
• Figure 4-25 Concourses A and B, Oil/Water Separator Preconstruction Assessments (1996)
• Figure 4-26 Buildings 3-360, 3-361, and 3-365 Assessments (1991, 1993-2003)
• Figure 4-27 Buildings 7-027-1, 7-027-2, and 7-027-3, Property and Building Features and
  Assessments (1991)
• Figure 4-28 Building 3-380, Pre-Construction Site Assessments (1989-1990)
• Figure 4-29 Potential PCB Sources to Slip 4 Study and Soil and Catch Basin Investigation
  (2008) – Central Portion of North Boeing Field
• Figure 4-30 Building 3-390, UST Assessments (1989-1991)
• Figure 4-31 Buildings 3-369 and 3-374 Assessments (1989-1991, 1995)
• Figure 4-32 Building 3-800 Assessment
• Figure 4-33 Building 3-801 Assessments and Remedial Excavation (1991-1992)
• Figure 4-34 Main Fuel Farm Assessments (1986-1991)
• Figure 4-35 Main Fuel Farm Remedial Excavations and Assessments (1992-1994)
• Figure 4-36 Building 3-818, Oil/Water Separator Pre-Construction Environmental Assessment
  (1993)
• Figure 4-37 Concourse C Assessments and Remedial Excavation (1990-1992)
• Figure 4-38 Areas of Investigation: Southern Area of North Boeing Field
• Figure 4-39 Former Buildings 3-830, 3-831, 3-832: UST Removals and Site Assessments
  (1987, 1989, 1990, and 1997)
• Figure 4-40 Tent Hangar Construction (2008)
• Figure 4-41 Storm Drain System Sampling Locations and Upgrades
• Figure 4-41 Part A
• Figure 4-41 Part B
• Figure 4-41 Part C
• Figure 4-41 Part D
• Figure 4-42 Sediment Trap Locations and Analytical Results
• Figure 4-43a Most Recent PCB Concentrations in Storm Drain Structures, North Boeing Field
• Figure 4-43b Most Recent PCB Sampling Dates for Storm Drain Structures, North Boeing
  Field
• Figure 4-44 Concrete Joint Material Removal Locations (2002-2006)
• Figure 4-45 Concrete Joint Material Sample Locations (2008)
• Figure 5-1 North Boeing Field Fire Training Center
• Figure 5-2 Fire Training Center UST and Catch Basin Samples

• Table 3-1 GTSP: Chemicals Detected in Soil Above MTCA Cleanup Levels or Soil-to-
  Sediment Screening Levels
• Table 3-2 GTSP: Chemicals Detected in Groundwater Above MTCA Cleanup Levels or
  Groundwater-to-Sediment Screening Levels
• Table 4-1 NBF PEL Area, Area-Wide Investigations: Chemicals Detected in Soil Above
  MTCA Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-2 NBF PEL Area, Area-Wide Investigations: Chemicals Detected in Groundwater
  Above MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-3 NBF PEL Area, NBF-GTSP Fence Line Area: Chemicals Detected in Soil Above
  MTCA Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-4 NBF PEL Area, Building 3-333: Chemicals Detected in Soil Above MTCA Cleanup
  Levels or Soil-to-Sediment Screening Levels
• Table 4-5 NBF PEL Area, Building 3-333: Chemicals Detected in Groundwater Above MTCA
  Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-6 NBF PEL Area, Building 3-335: Chemicals Detected in Soil Above MTCA Cleanup
  Levels or Soil-to-Sediment Screening Levels
• Table 4-7 NBF PEL Area, Former F&G Facility: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-8 NBF PEL Area, Former Building 3-304: Chemicals Detected in Soil Above MTCA
  Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-9 NBF PEL Area, Building 3-353: Chemicals Detected in Soil Above MTCA Cleanup
  Levels or Soil-to-Sediment Screening Levels
• Table 4-10 NBF PEL Area, Green Hornet Area:: Chemicals Detected in Soil Above MTCA
  Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-11 NBF PEL Area, Green Hornet Area: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-12 NBF Central Area, Concourse A: Chemicals Detected in Soil Above MTCA Cleanup
  Levels or Soil-to-Sediment Screening Levels
• Table 4-13 NBF Central Area, Concourse A: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-14 NBF Central Area, Former Buildings 3-360 and 3-361 and Building 3-365:
  Chemicals Detected in Soil Above MTCA Cleanup Levels or Soil-to-Sediment
  Screening Levels
• Table 4-15 NBF Central Area, Former Buildings 3-360 and 3-361 and Building 3-365:
  Chemicals Detected in Groundwater Above MTCA Cleanup Levels or Groundwaterto-
  Sediment Screening Levels
• Table 4-16 NBF Central Area, Buildings 7-027-1, 7-027-2, and 7-027-3 (Markov Property):
  Chemicals Detected in Soil Above MTCA Cleanup Levels or Soil-to-Sediment
  Screening Levels
• Table 4-17 NBF Central Area, Buildings 7-027-1, 7-027-2, and 7-027-3 (Markov Property):
  Chemicals Detected in Groundwater Above MTCA Cleanup Levels or Groundwaterto-
  Sediment Screening Levels
• Table 4-18 NBF Central Area, Building 3-380: Chemicals Detected in Soil Above MTCA Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-19 NBF Central Area, Building 3-380: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-20 NBF Central Area, Building 3-369: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-21 NBF Central Area, Building 3-800: Chemicals Detected in Soil Above MTCA
  Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-22 NBF Central Area, Building 3-800: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-23 NBF Central Area, Building 3-801: Chemicals Detected in Soil Above MTCA
  Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-24 NBF Central Area, Building 3-801: Chemicals Detected in Groundwater AboveMTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-25 NBF Central Area, Main Fuel Farm: Chemicals Detected in Soil Above MTCA
  Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-26 NBF Central Area, Main Fuel Farm: Chemicals Detected in Groundwater Above
  MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-27 NBF Central Area, Concourse B: Chemicals Detected in Groundwater Above MTCA
  Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-28 NBF Central Area, Concourse C: Chemicals Detected in Soil Above MTCA Cleanup
  Levels or Soil-to-Sediment Screening Levels
• Table 4-29 NBF Southern Area, Former Buildings 3-830, 3-831, 3-832: Chemicals Detected in
  Soil Above MTCA Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 4-30 NBF Southern Area, Former Buildings 3-830, 3-831, 3-832: Chemicals Detected in
  Groundwater Above MTCA Cleanup Levels or Groundwater-to-Sediment Screening Levels
• Table 4-31 Slip 4 Sediment Trap Data Through April 2009
• Table 4-32 NBF: Total PCBs in Storm Drain Solids
• Table 5-1 NBF Fire Training Center: Chemicals Detected in Soil Above MTCA Cleanup Levels or Soil-to-Sediment Screening Levels
• Table 5-2 NBF Fire Training Center: Chemicals Detected in Groundwater Above MTCA
  Cleanup Levels or Groundwater-to-Sediment Screening Levels

Appendices A & B
Appendix C
Appendix D
Appendix E
Appendices F-H