U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Search Result

FIRST FIVE-YEAR REVIEW REPORT, HIAWATHA BOULEVARD FORMER MANUFACTURED GAS PLANT, SUBSITE OF ONONDAGA LAKE SUPERFUND SITE, ONONDAGA COUNTY, NEW YORK
U.S. EPA Region 2, 24 pp, 2017

The remedial investigation of the former manufactured gas plant revealed elevated levels of BTEX compounds, PAHs, and cyanide in groundwater and subsurface soils. The 2010 ROD remedy called for in situ solidification of subsurface soils from the northeastern portion of the subsite where NAPL was identified in lenses and PAHs were found at concentrations >500 mg/kg to depths of 22-24 ft bgs. About 9,700 yd3 of contaminated soil was solidified. The remedy included enhanced biodegradation of groundwater through amendment injection along the northern property boundary to address high groundwater concentrations of BTEX and PAHs. In situ bioremediation field pilot study activities performed from September 2013 through June 2015 demonstrated that the indigenous sulfate-reducing microbial community was capable of degrading the MGP-related contaminants and that this degradation could be stimulated and enhanced by amending the groundwater with sulfate. The relatively slow groundwater velocity observed in the pilot study area allowed the use of a lower-solubility (slow-release) form of sulfate amendment (e.g., gypsum). Based on pilot results, full-scale deployment of sulfate amendments is being pursued. https://semspub.epa.gov/src/document/02/510540



The Technology Innovation News Survey welcomes your comments and suggestions, as well as information about errors for correction. Please contact Michael Adam of the U.S. EPA Office of Superfund Remediation and Technology Innovation at adam.michael@epa.gov or (703) 603-9915 with any comments, suggestions, or corrections.

Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.