Historic Fill Almost Sinks Brownfield Redevelopment

Historic Fill Almost Sinks Brownfield Redevelopment

The Eastwick section of Philadelphia had historically been used for the placement of 15,000,000 cubic yards of river dredge spoils and fill to raise the land and make buildable land in the 1960s and 1970s.  The fill varies in depth across the region and in locations extents below the groundwater table. 

Advanced GeoServices (AGC) was providing civil and geotechnical engineering support for a land developer when the project was halted due to environmental testing.  An out-of-state consultant was suggesting that significant remediation may be needed due to metals, volatile, and semi-volatile compounds.  Advanced GeoServices’ environmental group was retained by the land owner to provide a second opinion.  A fast-track data review and historic research was completed and used to develop a strategic approach that significantly reduced the uncertainty associated with the environmental issues.   AGC demonstrated that the historic fill was not the result of a site release but rather a regional background issue.   A focused site investigation and analysis showed arsenic was the only constituent of concern and that a site-specific, pathway elimination remedial approach could be easily incorporated into the redevelopment with minimal additional costs.  A Cleanup Plan was subsequently approved by PADEP and the project is currently under construction.

For more information on this project or to discuss your redevelopment site, contact:

CIVIL ENGINEERING SERVICES
DanWright, P.E.
Senior Project Consultant
610.840.9142

ENVIRONMENTAL SERVICES
Steve Kirschner, P.E.
Senior Project Consultant
610.840.9117