Environmental Geotechnology Tustin Marine Air Corps Station - California USA Nick Sanderson Liam McGreavy

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Environmental Geotechnology Tustin Marine Air
Corps Station - California USANick
SandersonLiam McGreavy
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Tustin MCAS

• Former Marine Corps Helicopter station
• Densely populated area
• South of Los Angeles

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Brief History

• Originally agricultural land
• 1602 acers
• Navy base opened in 1942
• Base for marine helicopters
  
  
  till 1999
• Proposed redevelopment

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Contaminated Land

• Arsenic
• DDT/ DDE/ DDD
• TRPH
• TCE
• Cadmium
• Nickel
• Selenium

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Site IRP - 12

• Drum storage area
• 3 reported releases ranging from 600 1000
  gallons
• Ground water and soil contamination

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Contaminant Sources

• Groundwater
• - Selenium 377 µg/L
• Arsenic 40 µg/L
• Other contaminants including TCE, Nickel and
  Cadmium

• Soil
• TRPH 730 mg/kg
• DDT 52 µg/kg
• Other contaminants including Arsenic, DDE, DDD

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Contaminant Effects

• Arsenic Poisonous, Carcinogenic
• TCE Liver damage, Cancer
• DDT Nervous system, birth defects, Bird
  reproduction
• - Bioaccumiulative
• Cadmium Liver damage
• - Bioaccumiulative
• Selenium Seleniosis, neurological damage, liver
  damage
• Nickel - Carcinogenic

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Clean Up

• 4.3m Clean up
• Groundwater pumped out and cleaned
• - Water released into nearby Peters Canyon
• - Process expected to take 30 years
• Soil dug out and treated off site
• - 2450 cubic yards (125-150 trucks)
• - Soil heated to cook out solvents e.g.
  arsenic
• - Soil then replaced

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Proposed Redevelopment

• Residential
• Community Parks
• Elementary school
• Retail
• Industrial

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Environmental Geotechnology Tustin Marine Air
Corps Station - California USANick
SandersonLiam McGreavy