former ford aeronutronics property...former ford aeronutronics property by: jessica law, p.g....
TRANSCRIPT
Former Ford Aeronutronics Property
By: Jessica Law, P.G.Engineering Geologist
Santa Ana Regional Water Quality Control BoardRiverside, California
November 10, 2018
Presentation Outline
Terms and Definitions
Site History
Decision Flow Chart Current Scope of Work
Indoor Air Sampling
Next Steps
Additional Information
Frequently Asked Questions 2
Vapor Intrusion Conceptual Model
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Site Vicinity Map
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Former Ford Aeronutronics Property
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Key Dates
1996-1997: Site received soil closure from OCHCA, allowing the property to be re-zoned for residential use. Offsite groundwater assessment required.
2001-2004: Remediation in the BCA Area
2006, 2008, & 2012: Limited soil gas assessment conducted, concluded health risks were not present.
2014 USEPA Memo re: acute TCE exposure
2016 SF Bay Region updated ESLs
2017: Conceptual Site Model submitted 11
Current Groundwater Investigation Limits
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Decision Flow Chart For Indoor Air Sampling
Prepared based on current vapor intrusion guidance, environmental screening levels and action levels.
Outlines next steps based on soil gas results, prioritizes buildings for indoor air sampling.
Outlines next steps based on indoor air sample results, including if mitigation measures are necessary.
Includes timeframe for next steps to occur.
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Next Steps
Complete soil gas assessment Complete indoor air testing
Based on analytical results, determine potential long-term mitigation measures and remediation
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Additional Information
GeoTracker ListServe for email notification
Next public event – First Quarter 2019
Water Board webpage
Ford’s Site Specific Website and an 800 number
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Frequently Asked Questions
How is this going to affect my property value?
What are the risks?
How long is this going to take?
My home is going to be sampled, is there anything I need to do to prepare?
How is this going to be cleaned up?
1,2-DCA was detected in my indoor air above the screening level, is Ford going to address this?
How can I reduce or get rid of the contaminants found in my home?
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