Superfund explanation of significant difference for the record of decision (EPA Region 9): Stringfellow Acid Pits, Riverside, CA, July 9, 1998

Technical Report · Mon Mar 01 04:00:00 EST 1999

OSTI ID:6481932

This document presents the explanation of significant differences (ESD) for a proposed change to the remedy chosen to the second Record of Decision (ROD2) for the Stringfellow Superfund site (the Site''). Currently, contaminated groundwater is being extracted from a series of wells located in the original disposal area of the Site and in downgradient, contaminated zones just to the south. The extracted groundwater is pumped to the on-site Stringfellow pretreatment plant (the PTP'') where the water is treated to remove site contaminants. The treated water from the PTP is then transported by tanker truck and discharged into the regional wastewater collection system, commonly known as the Santa Ana Regional Interceptor (SARI), that serves the upper Santa Ana River watershed area. Since the time ROD2 was completed, the SARI has been extended and now passes within 1.5 miles of the Stringfellow PTP. A direct pipeline to the SARI line would eliminate the tanker truck trips on the regional highways and municipal streets, and result in a significant reduction in operating costs of the Stringfellow PTP.

• Research Organization: Environmental Protection Agency, Office of Emergency and Remedial Response, Washington, DC (United States)
• OSTI ID: 6481932
• Report Number(s): PB-98-963151/XAB; EPA--541-R98-178
• Country of Publication: United States
• Language: English

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