National Oil and Hazardous Substances Pollution Contingency Plan; National Priorities List

The Environmental Protection Agency (EPA) Region 8 is publishing a direct final notice of partial deletion of the subunits A and B, residential waste rock piles, and the parks and playgrounds within Operable Unit 9 (OU 9) of the California Gulch Superfund Site (Site), Lake County, Colorado from the National Priorities List (NPL). The NPL, promulgated pursuant to section 105 of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) of 1980, as amended, is appendix B of 40 CFR part 300, which is the National Oil and Hazardous Substance Pollution Contingency Plan (NCP). This direct final partial deletion is being published by EPA with the concurrence of the State of Colorado, through the Colorado Department of Public Health and Environment, because EPA has determined that all appropriate response actions under CERCLA have been completed, and therefore further remedial action pursuant to CERCLA is not appropriate. OU 9 includes the Residential Populated Areas. EPA issued a Record of Decision (ROD) for OU 9 on September 2, of 1999. The Remedial Investigation has shown that the taking of remedial measures is not appropriate for subunits A and B of the Residential Populated Areas. Proposal to partially delete subunits A and B of the Residential Populated Areas was made by the State of Colorado, through the Colorado Department of Public Health and Environment, on November 3, 2000. The Removal Action for the residential waste rock piles within OU 9 was completed on December 22, 1999 and the Removal Action Completion Report was submitted to EPA in July 2001. The Remedial Action for the parks and playgrounds within OU9 was completed on September 27, 2000. The Site has been divided into 12 Operable Units (OUs). This direct final partial deletion pertains only to the subunits A and B, residential waste rock piles, and parks and playgrounds within OU 9 of the Site. Response activities will continue at the remaining OUs. Furthermore, this partial deletio