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FAIR Meeting April 6, 2006

FAIR Meeting April 6, 2006. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product. Groundwater Results – Fall 2004. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product. Groundwater Results – Spring 2005. Benzene ND <5 ug/L 5-99 ug/L

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FAIR Meeting April 6, 2006

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  1. FAIR MeetingApril 6, 2006

  2. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product Groundwater Results – Fall 2004

  3. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product Groundwater Results – Spring 2005

  4. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product Groundwater Results – Fall 2005 Shading indicates area potentially contaminated above DEC cleanup levels based on results of this sampling event.

  5. GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004

  6. GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005

  7. GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2005 Shading indicates area potentially contaminated above DEC cleanup levels based on results of this sampling event.

  8. DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004

  9. DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005

  10. DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2005 Shading indicates area potentially contaminated above DEC cleanup levels based on results of this sampling event.

  11. RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004

  12. RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005

  13. RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2005 Shading indicates area potentially contaminated above DEC cleanup levels based on results of this sampling event.

  14. Coordinated Sampling Plan • Coordinating survey techniques and frequency • Possible change in date of spring sampling event • COCs – limited VOC list?

  15. Current and Future Land Use Plans • Are commercial vs. residential cleanup levels appropriate for this area? • Can groundwater use restrictions be enforced as an institutional control? • Can future building construction be restricted if there is a vapor intrusion threat?

  16. Site-specific CSMs

  17. Chevron CSM

  18. UNOCAL CSM

  19. Van Gas CSM

  20. Areawide CSM

  21. Potentially Complete Pathways • Vapor Intrusion Pathway • Outdoor Air Inhalation Pathway • Incidental Ingestion and Dermal Contact with Soil (surface and subsurface) • Is the soil data representative? • Groundwater (ingestion, inhalation of volatiles, and dermal contact pathways) • Is the well search complete? • Protection of future receptors

  22. Institutional Control Discussion • Proposed Objectives • Protect workers and visitors from contact with contaminated soil and inhalation of vapors. • Prevent workers from using contaminated groundwater. • Prevent residential use of these properties.

  23. 2007 Deliverables

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