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1 <br />7_J <br />BPAmoco <br />SII' <br />California Regional Water Quality Control Board <br />Central Valley Region <br />3443 Routier Road, Suite A <br />Sacramento, California 95827-3098 <br />Attention: Mr. Philip S. Isorena <br />Werner A. Slcvol <br />Sr. Project Manager <br />BP Amoco Company <br />200 Public Square, Room 7-1 <br />Cleyeland,.QH 44114-2375 <br />Phone: 216-586-5605 <br />Fax: 216-586-6781 <br />e-mail: sicvolwa@bp.com <br />September 24, 1999 <br />Subject: Record of Conference Call on September 23, 1999 <br />Re: Implementation of Remedial Action Alternative B at <br />Applied Aerospace Structures Corporation Facility <br />Stockton, California <br />Dear Mr. Isorena: <br />Thank you for taking the time on Thursday, September 23`d, to discuss the <br />proposed remediation strategies for the subject site. As discussed, BP Amoco is <br />committed to providing the required resources to achieve a satisfactory closure for this <br />project as soon as practical. <br />This letter states our understanding of agreements reached during the three-way <br />conference call convened by Fred Kintzer (Parsons Engineering Science, Inc.). The <br />purpose of the conference call was to gain clarification of the RWQCB's requirements for <br />further cleanup of the downgradient portions of the plume expressed in the RWQCB <br />letter to BP Oil Company dated September 16, 1999. The RWQCB confirmed that the <br />WQO's presented in Table 1 of the letter, provide additional clarification and do not <br />necessarily supersede the discussion of "technological and economic feasibility" in the <br />letter from the RWQCB dated October 13, 1998. The previous letter presents an <br />approach and factors to be used for feasibility analysis of continuing cleanup actions. <br />With this understanding, BP Amoco will proceed with the following steps: <br />1. BP Amoco will develop a plan similar to Alternative B in the Remedial Alternatives <br />Evaluation report for intercepting and cleaning up the downgradient portion of the <br />plume. This plan will be presented in a Remedial Action Work Plan Addendum to be <br />submitted by Parsons ES to the RWQCB by November 1, 1999. <br />