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STATE OF CALIFORNIA _ ?ETE WILSON. Governor CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— CENTRAL VALLEY REGION gg 3443 ROUTIER ROAD. SUITE A Op SACRAMENTO, CA 95827-3098 PHONE: (916) 361-5600 FAX (916) 361-5686 MAR 2 3 19z 17 March 1992 Mr. Mike Vomund Chevron U.S.A., Inc. P.O. Box 5004 San Ramon, CA 94583-0804 ENV IfiONNIEIITA!_. HEALTH PER Mi.1-I ,,rw .a ABOVEGROUND TANK INSPECTION OF CHEVRON BANTA FUEL TERMINAL IN TRACY, SAN JOAQUIN COUNTY On 29 January 1992, staff geologist Polly Lowry conducted an inspection of the subject facility for compliance with the Aboveground Petroleum Storage Act. A copy of the inspection memo is enclosed. As recommended in the memo, improvements need to be made on the walls surrounding the upper containment area. These walls should be regraded and covered with a seal which is impervious enough to contain spills and which will resist erosion. The memo further recommends that the SPCC Plan include emergency phone numbers, a brief discussion of the ground water monitoring system, a record of employee training, a discussion of applicable state laws, and signed or initialed maintenance reports. Please include these changes in the revised plan which I understand is under preparation. A Report of Waste Discharge (RWD) and an NPDES permit application are required to obtain permits for discharges to and from the lower containment area. The necessary forms and annual fee schedule are enclosed. Please submit the completed forms, accompanied by the first annual fee, by 21 April 1992. We have tentatively classified your discharge as Category IIB, so the annual fee is $1,200. An additional RWD will be required later for any discharges of treated around water. In addition to a RWD, by 21 April 1992 you are required to submit a technical report to address the threat to shallow ground water from discharges to the around surface. This threat is discussed in more detail in the memo. Chevron should evaluate any engineered alternatives to the requirements of Chapter 15 that it believes may be appropriate at this site and recommend implementation of the best alternative to protect ground water quality. Monitoring of the ground water and remediation efforts should continue. We will provide comments soon on Chevron's 1990 Problem Assessment Report to provide regulatory oversight of Chevron's remediation efforts.