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CLEANUP AND ABATEMENT ORDER NO R5-2003-0713 2 FRANK and SHERRI GUINTA, dba GUINTA ENTERPRISES JAMES and MARILYN RAMSEY, I 2072 WEST YOSEMITE AVENUE MANTECA, SAN JOAQUIN COUNTY • found on-site is representative of a release that occurred pnor to 2000 There is no evidence of a release since the Kims have operated the tank system 5 From 1995 to the present, the garage on the east end of the building has been leased to Mr Dave Garza, who operates an auto repair service known as All City Auto and is not subject to the Order, because there is no evidence of a release resulting from activities at the auto repair service I FINDINGS ' 6 On 2 May 1992, San Joaquin County Environmental Heath Department (SJCEHD) submitted an ' Unauthorized Release (Leak) Report for a gasoline Ieak detected at the Site fuel dispensers during an inspection Subsequently SJCEHD discovered inconsistencies in the underground storage tanks (USTs) monthly reconciliation report of fuel supplies delivered versus sales of petroleum products, I an indicator of a leaking UST system SJCEHD directed the Dischargers to investigate the release to soil and groundwater, which included gasoline, diesel, benzene, toluene, ethylbenzene, xylenes, methyl tertiary butyl ether (MtBE), tertiary butyl alcohol, 1,2-dichloroethane (1,2-DCA), and tetrachloroethylene (PCE) (Figure 2) 7 From 1992 to 2003, SJCEHD worked with the Dischargers Work progressed slowly until 1 January 2003, at which time the Dischargers consultant turned off the SVE/AS system and declared that insufficient State Cleanup Funds remained to operate the system During a meeting at the Regional Board office on 9 April 2003, the Dischargers agreed to restart the SVE/AS system, which has now operated since May 2003 S In September 2000, 12 domestic wells were subsequently discovered as impacted by MtBE or ' 1,2-DCA and disconnected from the residences (Figure 3) Temporary bulk water supply tanks were installed at each home and water delivery was initiated by the Dischargers 9 SJCEHD staff met with City of Manteca Public Works (City of Manteca) to discuss installation of a public water supply and sanitary sewer line for the City of Manteca and unincorporated area residents impacted by MtBE and 1,2-DCA plumes Connections to the City of Manteca utilities ' were not feasible at that time due to estimated cost (52,000,000) and length of time (two years) for annexation of the unincorporated area ' 10 By January 2002, 12 wellhead treatment systems were installed to protect public health at residences with impacted wells 11 The Site was referred by SJCEHD to the Regional Board for non-compliance with the 25 February 2003 SJCEHD directive to restart the remedial systems This Regional Board Order to cleanup and abate the wastes (Order) is necessary because water quality, human health, and safety are impacted, pnvate wellhead treatment and remedial systems need to be operated and maintained without interruption, and groundwater cleanup is not complete In issuing this Order, lead regulatory oversight is transferred from San Joaquin County to the Regional Board