8/10/2019 June 2014 Sampling Information Update

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8/10/2019 June 2014 Sampling Information Update

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Official Business Penalty for Private Use $300

United States Environmental Protection Agency

Region 4 61 Forsyth St., SW Atlanta, GA 30303

Superfund Division, 11th Floor

Sherryl Lane

Community Involvement Coordinator

Reference Concentration (a concentration that is deemed to be protective of health concerns based on lifetimeexposure). There is likely some reduction in the concentrations of chemicals from the crawl space to the indoor air in most homes, however, because EPA cannot be certain of this, indoor air sampling for these locations is recommended as the next step.

There are five (5) other locations where reported concentrations of chemicals in the crawl space , sub -slab, ornearby ambient air samples are elevated but do not exceed health - based risk levels. The concentrations are approaching a level of concern if they were in the residential indoor air. The constituents included benzene, 1,2 -dichloroethane and 1,4 -dichlorobenzene. Since some variability in the air concentrations would be expected , these locations will also be included in the upcoming indoor air sampling event.

There are a total of eight (8) locations where EPA plans to take indoor air samples. This is due to somelocations having more than one sample that exceeded long -term health risk levels.

EPA currently plans to conduct the additional sampling in November 2014. Keep in mind that the levels of theconstituents detected could potentially be affected by household chemicals, such as solvents, and by cigarettesmoking, which can complicate the interpretation of the data.

Community Outreach EPA plans to hold a Public Availability Session to discuss residential air quality for these homes when resultsof indoor air sampling are received and validated.