Superfund explanation of significant difference for the Record of Decision (EPA Region 9): Koppers Co., Inc., Oroville, CA, January 21, 1991
The purpose of this document is to explain the significant differences between the Record of Decision (ROD) (PB90-177833) signed by the U.S. Environmental Protection Agency (EPA) in September 1989 and reissued on April 4, 1990, and the remedy that will be implemented at the Koppers Superfund Site. This document provides a brief background on the Koppers Site, describes the changes to the ROD that EPA is now making and explains the ways in which these changes affect implementation of the remedy originally selected the EPA. Based on a review of the technical data in the administrative record, EPA is changing the ROD to provide for separate cleanup standards for subsurface soil at the Site. This change is necessary standards for subsurface soil at the Site. This change is necessary to ensure that the cleanup standards for such soil will address protection of groundwater.
- Research Organization:
- Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
- OSTI ID:
- 30259
- Report Number(s):
- PB--95-963115/XAB
- Country of Publication:
- United States
- Language:
- English
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