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STEPS NEEDED TO OPERATE AND MAINTAIN THE SUB-SLAB DEPRESSURIZATION SYSTEM INSTALLED BY EPA AT THE CHEM-FAB PROPERTY
U.S. EPA Region 3, Document ID 2242795, 28 pp, 2017
EPA installed a vapor mitigation system in the main commercial building at 300 N. Broad Street, Doylestown, Pennsylvania (part of the Chem-Fab Superfund Site) in response to the potential for an imminent and substantial endangerment to human health presented by the vaporous migration of benzene and chlorinated VOCs from soils beneath the building into office suites. The system draws sub-slab vapors from beneath the foundation using a system of fans and forces the vapors through PVC pipes into the air outside the building, where the vapors will not concentrate into unacceptable levels as they would in confined office space. https://semspub.epa.gov/src/document/03/2242795
EPA installed a vapor mitigation system in the main commercial building at 300 N. Broad Street, Doylestown, Pennsylvania (part of the Chem-Fab Superfund Site) in response to the potential for an imminent and substantial endangerment to human health presented by the vaporous migration of benzene and chlorinated VOCs from soils beneath the building into office suites. The system draws sub-slab vapors from beneath the foundation using a system of fans and forces the vapors through PVC pipes into the air outside the building, where the vapors will not concentrate into unacceptable levels as they would in confined office space. https://semspub.epa.gov/src/document/03/2242795
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