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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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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 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.
GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004
GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005
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.
DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004
DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005
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.
RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Fall 2004
RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2005
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.
Coordinated Sampling Plan • Coordinating survey techniques and frequency • Possible change in date of spring sampling event • COCs – limited VOC list?
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?
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
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.