Baltimore City, Maryland

GTA performed Phase I and II ESAs at 719-723, 725, and 733 Fort Avenue. Review of historic aerial photographs and fire insurance maps indicated that the site was historically used as a machine shop, automobile repair facility, warehouse, trucking company, and union hall. Laboratory analysis of samples collected from the site reported elevated concentrations of petroleum constituents and metals in soil, and petroleum constituents and volatile organic compounds in groundwater. In addition two 2,000-gallon gasoline USTs and approximately 120 tons of oil/petroleum impacted soil were removed from the subject property by GTA Environmental Services, Inc.

The historical documentation and site evaluations were submitted to MDE VCP. A Response Action Plan (RAP) pursuant to the VCP has been prepared to establish a proposed remedy for on-site contamination in conjunction with planned site development. The proposed remedy includes construction monitoring during development; installation of a surface cap across the site, and excavation restrictions in the Home Owner's Association's bylaws. The RAP is being implemented and GTA is providing construction oversight, additional testing (ambient air), and community outreach services. Negotiations with MDE VCP staff avoided subslab venting systems and saved the client over $220,000 in remediation costs.