Real Time Analysis and Resolution of the Vapor Intrusion Pathway at an Active School
Oral Presentation
Prepared by D. Gillay1, B. Hartman2, R. Thompson3
1 - Barnes & Thornburg LLP, 11 South Meridian Street, Indianapolis, IN, 46204, United States
2 - Hartman Environmental Geoscience, 7171 Seabright Lane, Solana Beach, CA, United States
3 - Risk Options, LLC, 8161 Fendler Drive, Indianapolis, IN, United States
Contact Information: [email protected]; 317-231-7474
ABSTRACT
A number of the Region V state remediation programs have recently adopted, or are considering, changes in their policies and regulatory programs that require or will require assessing the vapor intrusion (VI) pathway. Frequently, decision making concerning the investigation and mitigation of VI is dictated by a mixture of regulatory, legal and technical issues that are rapidly changing. The science has evolved and continues to evolve at a rapid pace.
Last year (2014) was a critical year for stakeholders involved with managing the VI pathway with an emphasis in US EPA Final Draft VI Guidance on pre-emptive mitigation and the potential spatial, temporal, and related uncertainties with assessing VI. Finding a cost effective path around these obstacles is a daunting and challenging task. Successful monitoring, investigation, and closure strategies begin with the end in mind and can profoundly affect the costs and time frame to reach an endpoint.
This presentation provides a real world example of innovative tools deployed at an active school to assess in real-time the potential VI pathway. Vapor samples (sub-slab soil gas and indoor air) were measured by gas chromatography using an ultra-sensitive electron capture detector and a photoionization detector for higher concentrations following modified EPA Method TO-14. These results were then used to manage and control future risk, liability, and the uncertainties related to the VI pathway.
Oral Presentation
Prepared by D. Gillay1, B. Hartman2, R. Thompson3
1 - Barnes & Thornburg LLP, 11 South Meridian Street, Indianapolis, IN, 46204, United States
2 - Hartman Environmental Geoscience, 7171 Seabright Lane, Solana Beach, CA, United States
3 - Risk Options, LLC, 8161 Fendler Drive, Indianapolis, IN, United States
Contact Information: [email protected]; 317-231-7474
ABSTRACT
A number of the Region V state remediation programs have recently adopted, or are considering, changes in their policies and regulatory programs that require or will require assessing the vapor intrusion (VI) pathway. Frequently, decision making concerning the investigation and mitigation of VI is dictated by a mixture of regulatory, legal and technical issues that are rapidly changing. The science has evolved and continues to evolve at a rapid pace.
Last year (2014) was a critical year for stakeholders involved with managing the VI pathway with an emphasis in US EPA Final Draft VI Guidance on pre-emptive mitigation and the potential spatial, temporal, and related uncertainties with assessing VI. Finding a cost effective path around these obstacles is a daunting and challenging task. Successful monitoring, investigation, and closure strategies begin with the end in mind and can profoundly affect the costs and time frame to reach an endpoint.
This presentation provides a real world example of innovative tools deployed at an active school to assess in real-time the potential VI pathway. Vapor samples (sub-slab soil gas and indoor air) were measured by gas chromatography using an ultra-sensitive electron capture detector and a photoionization detector for higher concentrations following modified EPA Method TO-14. These results were then used to manage and control future risk, liability, and the uncertainties related to the VI pathway.
