CONSTRUCTION DEBRIS LANDFILL

 

SITE DESCRIPTION

The Construction Debris Landfill is located in the central portion of the installation. Wastes were placed in a ravine with periodic soil cover. Waste included brick, stone, concrete, wire and 55-gallon drums. It is believed that this site was in operation from 1941 to September 1992. The site was originally reported to be 3 acres; after the initial RI, the site was determined to be 10 acres.

The PA/SI was completed in 1991, and the initial RI was completed in May 1996; no significant contamination was found.

It is believed that unauthorized dumping occurred at this site.  Future sampling is recommended to characterize the site.

Additional soil and sediment samples were collected by MKM in 2004 to help determine the full extent of the site.  This information is documented in the Draft Final Report for the Soil Data Collection.  No analytes above the background levels as determined in the OU1 Record of Decision were detected.  Material that appeared to be fly ash was encountered at 18 ft. below ground surface. 

CLEANUP STRATEGY

A draft final (rev. 1) OU-4 supplemental RI was submitted to EPA for review in July 2008 and is currently in “informal dispute”.     

A revised draft OU-3 RI/FS was submitted to EPA for review in April 2008

This site is included in the PBC awarded in 2004.

 

The IRP will be responsible for soil and groundwater contamination.  The recommendation for the soil and groundwater is No Further Action as documented in the draft final (rev. 1) OU-4 supplemental RI and the revised draft OU-3 RI/FS.