Conceptual Site Model

DRAFT

Bioventing InfrastructureDRAFT

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BNSF Rail Line

N Market St N Market St

MW-6MW-8

MW-10

MW-11

MW-12 MW-13 MW-14

MW-15

MW-16

MW-21

MW-22

MW-24MW-25

MW-26

MW-27

MW-30

MW-29

MW-10.10

MW-20.30

MW-35.53

MW-43.67

MW-50.76MW-7

1.65

MW-90.12 MW-17

2.03 MW-180.31

MW-190.88

MW-207.79

MW-230.32

MW-280.82

Legend@A

Monitoring Well with Average 2016LNAPL Thickness (feet)

@AMonitoring Well with Uncertain Results(Submerged Screen or Dry Well)

@A Monitoring Well with No Measureable LNAPLDOT Proposed RailroadRealignment Option - 2014

Most Recent Approximate Extent ofLNAPL, December 20161 Foot LNAPL Thickness Based on AveragesOver Four Quarters 2016 DataDOT Proposed HighwayAlignment Option - 2014

DOT Proposed PedestrianPathway - 2014Historical Aboveground Storage Tank, Sump or Pump House

Environmental Resources Managementwww.erm.com

Figure 6LNAPL Cleanup Action Areas

BNSF Black TankSpokane, Washington

0 120 24060Feet

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PRELIMINARY WORKING DRAFT

ERM