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

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

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

  2. Firing Range Excavated Grids

  3. Firing Range Soil Excavation

  4. Historic 4S Outfall Boundary

  5. 4S Outfall Excavation

  6. 4S Outfall Soil Screen Plant

  7. Excavated Soil Post-Screening Survey

  8. 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

  9. 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

  10. 4S Outfall Soil Excavation Summary

  11. Recovered Metal Scrap 184,450 lbs of (non-MEC) metal scrap recycled

  12. Summary of Recovered Munitions

  13. Examples of Recovered MEC MK18 Time Fuze MK2 Hand Grenade 40mm, 20mm, 7.2” Rocket Fuze 1.1 inch Projectile

  14. RAD Screening and Recovered Items Recovered RAD Items Radiological Survey

  15. Recovered Outfall Masses – Lennar Eastern Early Transfer Parcel

  16. Additional Outfall Mass Location

  17. 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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