Superfund explanation of significant difference of the Record of Decision (EPA Region 10): Commencement Bay, Nearshore/Tideflats, Operable Unit 01 -- sediments and Operable Unit 05 -- source, Pierce County, WA, July 28, 1997

Technical Report · Sat Nov 01 00:00:00 EST 1997

OSTI ID:673760

The purpose of this explanation of significant difference ESD is to modify the cleanup level for remediation of marine sediments contaminated with polychlorinated biphenyls (PCBs) at the Commencement Bay Nearshore/Tideflats (CB/NT) Superfund site. EPA`s September 30, 1989, Record of Decision (ROD) for the CB/NT Site established cleanup levels. With this ESD, EPA is modifying the PCB cleanup level to 450 micrograms/kg, to be achieved during cleanup, and the PCB level of 300 micrograms/kg, to be achieved 10 years after cleanup.

• Research Organization: US Environmental Protection Agency (EPA), Washington, DC (United States). Office of Emergency and Remedial Response
• OSTI ID: 673760
• Report Number(s): PB-97-963120/XAB; EPA-541/R-97/059; TRN: 82721311
• Resource Relation: Other Information: DN: See also PB89-225544.; PBD: Nov 1997
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING AND POLICY
54 ENVIRONMENTAL SCIENCES
WASHINGTON
BAYS
SEDIMENTS
REMEDIAL ACTION
POLYCHLORINATED BIPHENYLS
MAXIMUM PERMISSIBLE CONCENTRATION
PROPOSED REMEDIAL ORDERS