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SECOR w secorcom INTERNATIONAL S E C O R INCORPORATED 3017 Kilgore Road,Suite 100 Rancho Cordova,CA 95670 916-661-0400 TEL 916-861-0430 F" HUMPED SEP - 7 2005 August 31, 2005 ENVIRONMENT HEALTH PERMIT/SERVICES Ms. Mary Serra Regional Water Quality Control Board—Central Valley Region 11020 Sun Center Drive, #200 Rancho Cordova, CA 95670 Re: Meeting Minutes from the August 25, 2005 Parcel 2A Technical Meeting at the Regional Water Quality Control Board, Rancho Cordova, California Office L&M Operable Unit Stockton Parcel 2A West Weber Avenue and North Lincoln Street Stockton, California / Dear Ms. Serra: This letter and attachment, prepared by SECOR International Incorporated (SECOR)on behalf of the L&M Operable Unit Group (L&M OU), provides the meeting minutes from the August 25, 2005 meeting held at the Regional Water Quality Control Board's (RWQCBs) Rancho Cordova office. The meeting was called by Mary Serra to provide technical discussion of the Parcel 2A, West Weber Avenue and Lincoln Street, Stockton, California ("the Site"). The meeting minutes were recorded by SECOR International, Inc (SECOR). Attendees at the meeting included Mary Serra and Duncan Austin from the RWQCB, Dan • Schreiner and Rusty Benkosky from SECOR, Tom Bauhs from Chevron, Tracy Sizemore (by phone)from ConocoPhillips, Kitty Walker form the City of Stockton Redevelopment Agency (RDA), and Robert Traylor from Golden State Environmental (GSE). The following is a list of highlights from the meeting: • The meeting followed (generally) the meeting agenda submitted to the RWQCB via email by Robert Traylor on August 24, 2005. • Terms of the Settlement Agreement between the RDA and ConocoPhillips and Chevron (collectively"the L&M Group") were discussed. The RDA will provide a copy of the Settlement to Mary Serra. • High metals concentrations present in shallow soil in areas of the Site are most likely from fill material used in low lying areas of the Site. • The dual-phase system and part of the soil-vapor system at the L&M OU are currently operating. • The L&M Group plans to start excavation on the Unocal OU, per the RWQCB approved work plan, on August 29, 2005. • The RDA will not allow SECOR to conduct that work on behalf of the L&M Group at the Unocal OU. • The Human Health Risk Assessment is complete and currently with the Department of Toxic Substances Control for review and comment. • The L&M OU and Unocal OU will be cleaned to standards based on land use. • The RDA and the L&M Group are working together to address allocation of responsibility for groundwater cleanup on the Unocal and Alco OUs. • The RWQCB stated that the entire excavation scope of work outlined in the approved work plan submitted by SECOR must be carried out. • The RWQCB asked that the RDA and the L&M Group provide a plan to proceed at the Site on Tuesday,August 30,2005.