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STATE OF CALIFORNIA - Environmental Prot Agency PETE WILSON, Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> 3443 Routier Road, Suite A <br /> Sacramento, CA 95827-3098 <br /> PHONE: (916) 255-3000 `"°�"' <br /> FAX: (916) 255-3015 <br /> 16 May 1997 <br /> Mr. Daniel Munzer Ms. Karen Baril <br /> Munco, Inc. Cargill, Inc. <br /> 401 E. Ocean Blvd, Suite 501 P.O. Box 5624 (MS-24) <br /> Long Beach, CA 90802 Minneapolis, MN 55440-5624 <br /> Ms. Miriam Barbonio Ms. Leah Goldberg <br /> Chevron Chemical Company Hanson Bridgett <br /> 6001 Bollinger Canyon Road 333 Market Street, 23rd floor <br /> San Ramon, CA 94583 San Francisco, CA 94105 <br /> REVIEW OF GROUNDWATER MONITORING <br /> Thank you for submitting the report concerning the February 1997 groundwater sampling event at <br /> the Koppel Stockton Terminal in Stockton. After reviewing the report, I had the following <br /> questions: <br /> 1. Was the water in the wells allowed to equilibrate with the atmospheric pressure before the water <br /> level elevations were measured? Due to site conditions, this step is required for future <br /> monitoring events. <br /> 2. The Water Well Sampling Sheets in the Appendix are for the 5 November 1996 sampling event, <br /> not the 23 February event. Please submit the correct sheets. <br /> 3. Although the March water level data was tabulated in the report, a groundwater contour map <br /> wasn't provided. However, I understand from the report's cover letter that the contour map will <br /> be part of the March/April groundwater elevation report. <br /> Please submit the above information with the March/April report. This report is due by 15 June. <br /> The next quarterly groundwater monitoring event should take place in June 1997, and the report of <br /> results should be submitted by 30 July. At that point, the groundwater will have been monitored for <br /> four quarters, and I anticipate that there will be enough data to begin to formulate remedial <br /> alternatives. <br /> If you have any questions, I can be reached at (916) 255-3104. <br /> WENDY WYELS <br /> Agricultural Unit <br /> cc: Mr. Jim Hartley, C112M Hill, Sacramento <br /> Ms. Diane Hinson, San Joaquin County Environmental Health Department, Stockton <br />