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Marine Corps Firing Range and Historic 4S Outfall Project Update Mare Island Restoration Advisory Board Meeting October 27, 2005 PowerPoint PPT Presentation


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Marine Corps Firing Range and Historic 4S Outfall Project Update Mare Island Restoration Advisory Board Meeting October 27, 2005. Firing Range Excavated Grids. Firing Range Soil Excavation. Historic 4S Outfall Boundary. 4S Outfall Excavation. 4S Outfall Soil Screen Plant.

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Marine Corps Firing Range and Historic 4S Outfall Project Update Mare Island Restoration Advisory Board Meeting October 27, 2005

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Marine Corps Firing Range andHistoric 4S OutfallProject UpdateMare IslandRestoration Advisory Board MeetingOctober 27, 2005


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Firing Range Excavated Grids


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Firing Range Soil Excavation


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Historic 4S Outfall Boundary


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4S Outfall Excavation


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4S Outfall Soil Screen Plant


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Excavated Soil Post-Screening Survey


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Firing Range/4S Outfall Soil Sampling

  • Excavated soil analyzed for leachable lead levels

    • Deionized Water Waste Extraction Test (DI WET)

    • Analysis results:

      • Firing Range - ND (< 0.003 mg/L) to 0.077 mg/L

      • 4S Outfall - ND (< 0.003 mg/L) to 0.020 mg/L

    • Acceptance criteria is 5.0 mg/L


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Soil Placement in IA H1

Haul Route along 4M/4N Pond Levee

30-40 trips per day

Total volume placed = 64,246 cy

  • Firing Range: 32,644 cy

  • 4S Outfall: 31,602 cy


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4S Outfall Soil Excavation Summary


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Recovered Metal Scrap

184,450 lbs of (non-MEC) metal scrap recycled


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Summary of Recovered Munitions


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Examples of Recovered MEC

MK18 Time Fuze

MK2 Hand Grenade

40mm, 20mm, 7.2” Rocket Fuze

1.1 inch Projectile


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RAD Screening and Recovered Items

Recovered RAD Items

Radiological Survey


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Recovered Outfall Masses – Lennar Eastern Early Transfer Parcel


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Additional Outfall Mass Location


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Project Status

  • Complete soil excavation/screening - 10/28/05

  • Complete soil transport to IA H1 – 11/04/05

  • Perform geophysical confirmation survey – 11/7/05

  • Lennar outfall mass disassembly – 11/11/05

  • MEC Treatment Range Operation –> Nov-Dec 05


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