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STATE OF CALIFORNIA—HEALTH AND WELFARE AGENCY GEORGE DEUKMEJIAN, Governor <br /> DEPARTMENT OF HEALTH SERVICES <br /> TOXIC SUBSTANCES CONTROL DIVISION <br /> NORTHERN CALIFORNIA SECTION <br /> 4250 POWER INN ROAD <br /> SACRAMENTO, CA 95826 June 27 , 1986 <br /> (916)739-3145 <br /> F 4" <br /> bb <br /> Raimond F. Clary, Jr. <br /> Manager, Lockeford Plant Materials Center (PMC) /�,Fq� <br /> P.O. Box 68 ` 4 Ty <br /> Lockeford, CA 95237 <br /> Dear Mr. Clary: <br /> CLOSURE OF UNDERGROUND HAZARDOUS WASTE TANKS, LOCKEFORD PLANT <br /> MATERIALS CENTER, SAN JOAQUIN COUNTY <br /> Ms. Laurie Cotulla, R.S. , San Joaquin Health District, forwarded <br /> your letter of April 25, 1986, to this Department, since it <br /> concerns hazardous waste. This Department is responsible for <br /> insuring the proper processing and closure of underground tanks <br /> that contain hazardous waste. These responsibilities are <br /> delineated in: <br /> 0 40 CFR, Subchapter I <br /> o CAC, Title 22 , Division 4 , Chapter 30 <br /> o CAC, Title 23 , Subchapter 16 <br /> o California H & S Code, Division 20, Chapters 6. 5 <br /> and 6.7 . <br /> To accomplish proper closure the Department requires a detailed <br /> closure plan. The closure plan outline and pertinent information <br /> from the California Underground Storage Tank Regulation are <br /> attached. Closure actions must also be coordinated with the <br /> Regional Water Quality Control Board (RWQCB) . <br /> Your proposed approach of removing 1 1/2 feet of soil from around <br /> the tank and disposal of the soil at a Class I site may be <br /> appropriate; however, you may want to consider sampling the soil <br /> around the tank first to determine whether or not it actually <br /> constitutes hazardous waste. Once the tank is removed, soil <br /> testing around and at the bottom of the hole will be necessary to <br /> determine the extent of significant contamination. <br />