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STATE O CALIFORNIA-Environmental Protection AMcy PETE WILSON,Governor <br /> CALIFORNIA REGIONAL WATER ALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION R E C E(V E D o ° <br /> 3443 Routier Road,Suite A --- <br /> Sacramento,CA95827-3098 APR 2 5 1995 - <br /> PHONE:(916)255-3000 <br /> FAX:(916)255-3015 ,v <br /> D.O. CU±_BtridZSON <br /> CHEVRON PIPELINE CO. <br /> 21 April 1995 <br /> Mr. Don O. Culbertson <br /> Chevron Pipe Line Company <br /> 4000 Executive Parkway, Suite 400 <br /> Bishop Ranch 8 <br /> P.O. Box 5059 <br /> San Ramon, CA 94583-0959 <br /> REVISED WORK PLAN FOR ADDITIONAL SITE CHARACTERIZATION, CHEVRON <br /> PIPE LINE COMPANY, ALDEN PARK SITE, TRACY, SAN JOAQUIN COUNTY <br /> The above-referenced work plan has been reviewed by Regional Board staff and the Department of <br /> Toxic Substances Control (DTSC). Mr. Ned Butler with DTSC is providing consultative services in <br /> risk assessment evaluation for the Alden Park Site to support the efforts of the Regional Water Quality <br /> Control Board. <br /> The referenced work plan is hereby approved on the condition you submit an adequate response to the <br /> comments outlined in the attached 11 April 1995 memo prepared by Mr. Butler. Also, as far as the <br /> ground water sampling is concerned, please explain why you propose to sample only 10 of the 18 <br /> monitoring wells. L <br /> According to the proposed schedule of tasks provided during our 28 March 1995 meeting, an initial <br /> public meeting should be scheduled as discussed. Since the process of obtaining access <br /> agreements/permits is projected to take 1-3 months, this process should begin immediately. <br /> You should contact me at least 72 hours prior to startup of this field work, so I can be present to <br /> observe procedures and split samples. If you have any questions, you may contact me at (916) <br /> 255-3054. <br /> DAVID E. JENKINS <br /> Associate Engineering Geologist <br /> DEJ:dej/lsb <br /> Enclosure <br /> cc: Mr. Ned Butler, State Department of Toxic Substances Control, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin Public Health Services Department, Stockton <br /> Mr. Bill Vizza, Director, San Joaquin County Department of Public Works, Tracy <br />