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U.S. Department of Energy
Office of Scientific and Technical Information

Superfund record of decision amendment (EPA region 9): Williams Air Force Base, operable unit 2, Chandler, AZ, August 16, 1996

Technical Report ·
OSTI ID:464256

Williams Air Force Base (AFB) is located in Maricopa County, east of the city of Chandler, Arizona. This record of decision amendment (RODA) selects a remedial action (RA) for site cleanup of the deep soil (from a depth of 25 feet to the top of groundwater) at ST-12. Extensive testing and modeling conducted as part of the OU-3 FS showed that contaminants in deep soil could travel to groundwater and impact the cleanup remedy selected for groundwater in the OU-2 proposed plan. For this reason, the decision was made to consider all the environmental media at ST-12 as a unit in subsequent studies. Deep soil at ST-12 is, therefore, reincorporated into OU-2.

Research Organization:
Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
OSTI ID:
464256
Report Number(s):
PB--96-963121/XAB; EPA/AMD/R--09-96/157
Country of Publication:
United States
Language:
English