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CLEANUP AND ABATEMENT ORDER NO 5-00-704 2 FORMER CHEVRON STATION #9-5775 301 WEST KETTLEMAN LANE LODI SAN JOAQUIN COUNTY hours GR is scheduled to continue weekl% extraction at EX -I until an interim pump and treat system is installed - 5 On 7 April 2000, GR submitted a workplan to the San Joaquin County Environmental Health Division to install six additional monitonng hells to further define the lateral and vertical extent of petroleum hydrocarbons and fuel o\ygenates both on-site and offsite One deep monitoring well will be installed next to MW -8 to sen e :.s a sentinel well between the on-site contamination and the active City of Lodi -Municipal Well 1_ (City Well 12) G City Well 12 is about 500 feet southwest and downgradient of the former underground storage tanks City Well 12 operates intermittentIN at approximately 800 gallonq per miiiute The well is constructed with a 108 -foot arunular seal, cased to 490 feet bgs without a gravel pack, and the first perforated interval is at 210 feet bgs Tli,- 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 µg/1 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 Services Drinking Water Action Level for MtBE is 13 ug/1 and the Secondary Maximum Contaminant Level for taste and odor is 5 gg/l 9 Section 13304(a) of the California Water Codle provides that Any person who has discharged or discharges waste irto the Haters of this state in violation of any waste discharge requirement or other order or prohibition issued b-. a rtgional board or the state board, or who has caused or permitted, causes or permits, or threatens to cause or permit am ..erste to be discharged or deposited where it is, or probably will be, discharged into the waters of the state and creates or trreatens to create a condition of pollution or nuisance, shall upon order of the regional board cleanup such waste or abxc the effects of the waste, or, in the case of threatened pollution or nuisance tate other necessary remedial action, ircluLng but not limited to, overseeing cleanup and abatement efforts Upon failure of anyperson to comply with the cleanup and abatement order the Attorney General at the request of the board shallpetition the superior court for that co inn tar the issuance of an injunction requiring theperson to comply with the order In any such suit the court shall have jurisdiction to grant a prohibitory or mandatory injunction, either preliminary or pernianent as the fact may warrant 10 The Water Quality Control Plan for the Regional 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 0