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4 1 <br /> f STATE OF CALIFORNIA GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD- ry I =• <br /> LREGION <br /> CENTRAL VALLEY <br /> 3201 S STREET ' Y°• � <br /> SACRAMENTO,CALIFORNIA 95816.7090 J A N r r <br /> PHONE: 1916)445-0270 <br /> ENVIROVIENTAL HEALTH <br /> FERMIT/SERVICES <br /> 4 <br /> 6 January 1987 CERTIFIED MAIL <br /> P 457 294 623 <br /> Mr. Alex J. Diebenbrock <br /> Arcady Oil Company <br /> 1515 Hope Street, Suite 202 <br /> South Pasadena, CA 91030 <br /> TOXICS PITS CLEANUP ACT (TPCA) , ARCADY OIL t4PANY, SAN JOAQUIN COUNTY <br /> A recent review of the files and results of preliminary soils analysis conducted <br /> by the Regional Board staff indicate that the surface impoundments operated by the <br /> Arcady Oil Company (AOC) are subject to the requirements of the Toxics Pits <br /> Cleanup Act (TPCA) . This law requires that all surface impoundments containing <br /> liquid 'hazardous wastes' or 'hazardous wastes' containing free liquids be closed <br /> or retrofitted unless the owner/operator applies for and receives an exemption. <br /> The deadline for receiving an exemption (1 January 1986) has passed. Therefore, <br /> if the AOC surface impoundments are within 1/2 mile upgradient of a potential <br /> drinking water source, the law requires that this impoundment be closed by 30 June <br /> 1988. If the surface impoundments are not within 1/2 mile upgradient of a poten- <br /> tial drinking water source, the law requires that AOC retrofit (install a double <br /> liner and leachate collection and removal system) and conduct a ground water <br /> monitoring program. For your information I have enclosed a copy of the TPCA <br /> (Attachment 1) . <br /> r• <br /> , . TPCA also requires that all owners/operators submit a Hydrogeologic Assessment <br /> Report (HAR) . The HAR is needed to adequately define the nature and extent of any <br /> ground water pollution, hydrogeologic conditions, and climatological conditions <br /> which are present at the site. The HAR shall be prepared by a qualified person <br /> pursuant to Section 25208.2(t) of the TPCA and shall contain all of the informa- <br /> tion specified in Section 25208.8 of the TPCA and any additional information <br /> required by the Regional Board. <br /> The HAR outline (Attachment 2) is intended to provide guidance and assist AOC in <br /> the development of the HAR for this site. Each point shown on the outline should <br /> be fully addressed, and all conclusions contained in the HAR should be fully <br /> substantiated. Where applicable, the discussion in each HAR should include a <br /> description of equipment, methods, and procedures used as well as the rationale <br /> for their use. Information contained in a HAR should be presented in written, <br /> 6 <br />