On December 4, 2009, the Ohio EPA requested assistance from US EPA in evaluating potential vapor intrusion conditions at the Bank Avenue Landfill Site in St. Bernard, Ohio. The St. Bernard Landfill (aka Bank Avenue Landfill) closed in 1985 and seven residences are located within 200' of the waste. In September 2009, elevated levels of methane were documented at the landfill perimeter. The US EPA investigation will include sub-slab sampling in nearby residences for volatile organic compounds (VOCs) and methane. US EPA conducted residential vapor intrusion sampling in residences in December 2009 - February 2010. Sample results were reviewed with property owners and the Ohio Department of Health (ODH) in March 2010.
In April 2010, the City of St. Bernard agreed to conduct three additional rounds of residential vapor intrusion sampling including April 2010, July 2010, and October 2010. A sampling work plan was submitted to US EPA in April 2010. US EPA will oversee the residential vapor intrusion sampling activities.
On April 21, 2010, the Ohio EPA, pursuant to the September 16, 2009 Ohio EPA Director's Final Findings and Orders, received the Remedial Action Plan - Landfill Gas Abatement work plan submitted by the City of St. Bernard. The Landfill Gas Abatement work was initiated in May 2010 and includes:
1. Installation of an enhanced condensate management system
2. Extension of the current vacuum extraction system (additional 500 feet) adjacent to residential yards.
3. Installation of four additional monitoring probes
