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' CLEANUP AND ABATEMENT ORDER NO 5-W704 2 EOU'iER CHEVRON STATION #9-5775 ' 301 WEST KETTLEMAN LANE LODI, SAN JOAQUIN COUNTY ' Hours GR is scheduled to conttnue r\eekI% extraction at EX-1 until an interim pump and treat system is installed ' S On 7 April 2000, GR submitted a workplan to the San Joaquin County Environmental Health Division to install six additional monitonng Niells to further define the lateral and vertical extent of petroleum hydrocarbons and fuel oxygenates both on-site and offsite One deep nnomtoring ' well will be installed next to MW-8 to sena as a sentinel well between the on-site contannination and the active City of Lodi_Municipal We11 1-2 (City Well 12) G City Well 12 is about 500 feet southwest and downgradient of tine former underground storage tanks City Well 12 operates intermittent]) at approximately 800 gallons per mtnute The well is ' constructed with a I08-foot annular seal, cased to 490 feet bgs without a gravel pack, and the first perforated interval is at 210 feet bgs Th.City of Lodi Water Department analyzes monthly samples from City Well 12 using EPA Method 524 2 MtBE has not been detected in this well at ' a detection limit of 3 pg/I 7 In October 1999, GR placed water level transducers in two on-site monitoring wells for a 3-day ' period and recorded fluctuation changes corresponding to pumping of City Well 12 GR concluded that the shallow groundwater zone is in communication with the municipal well 8. The California Department of Health Sen-ices Drinking Water Action Level for MtBE is 13 po, and the Secondary Maximum Contaminant Level for taste and odor is 5 µg/1 ' 9. Section 13304(a) of the California Water Code provides that: Any person who has discharged or discharges%este into the waters of this state in violation of wry waste discharge requirement or other order or prohlbitlon issued b-. a reponal board or the state board,or wito has caused or pernhitied, causes or permits,or threatens to cause or permit am waste to be discharged or deposited where it is,or probably will be, discharged into the wafers ofthe state and creates,or threatens to create,a condition ofpollution or auisamw,shall upon order of the regional board cleanup such waste or abase the of eds of the waste,or.In the case of fiWrwvW polludon or auuanm take other necessary remedial action,including but not limited to,oversedng cleanup and abatenmt efforts Upon fallure of any person to comply with the cleanup and abatement order,the Auorney Genre],at the request of the board,shall petition the superior court for that co=n nor the issuance of an Gtlunction requiring the person to Qomply with the order In any such suit,the court shall have f Msdrenon to grant a prohibitory or mandatory irtlunction,either preliminary or permanent,as the fact may warrant 10. The Water Quality Control Plan for the Recon] Water Quality Control Board, Central Valley Region,(4th Edition) (Basin Plan) establishes beneficial uses and water quality objectives to protect the beneficial uses Water quality objectives for groundwater as specified in the Basin Plan include primary and secondary maximum contaminant levels Waste,including MTBE,has ' been discharged to waters of the state at concentrations that exceed water quality objectives. Exceedance of water quality objectives constitutes pollution. Therefore, waste, including MTBE, has been discharged or deposited where it has created and continues to threaten to create a ' condition of pollution or nuisance