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CLEANUP AND ABATEMEN i ORDER NO. 5-00-704 FORMER CHEVRON STATION #9-5775 301 WEST KETTLEMAN LANE LOD1, SAN JOAQUIN COUNTY hours. GR is scheduled to continue weekly extraction at EX -1 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 monitoring wells to further define the lateral and vertical extent ofpetroleum hydrocarbons and fuel oxygenates both on-site and ofi'site. One deep monitoring well will be installed next to MW -8 to serve as 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 intermittently at approximately 800 gallons per minute. The well is constructed with a 108 -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/l. 7. In October 1999, GR placed water level transducers in two bn-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 Ser% ices Drinking Water Action Level for MtBE is. 13 jig/I, and the Secondary Maximum Contaminant Level for taste and odor is 5 pgn. 9. Section 13304(a) of the California Water Code provides that: "Any person who has discharged or disdurrges wane into the waters of this state in violation of any »+este discharge requirement or other order or prohibftion issued b_.- a rrgional board or the state board, or who has caused or permitted, causes or perntfls, or threatens to cause or permit am ueste to be discharged or deposited where It Is, orpr obably will be, dwharged brio the waters of the state and creates. or rcreatens 10 create, a condition ofpollwion or nuisance, shall upon order of the regional board cleanup such %wee or abate the e,(jecrs of the waste, or, In the case of duvatmapollution or nuisance, take other necessary remedial action, h:clud crg, but not limited to, overseeing cleanup and abatement efforts upon failure ofairy person to comply with the cleanup and abatement order, die Attorney Gener4 at the request of the board, shall petition the superior court for that cormn- for the issuance of an injunction requiring the person to comply with Me order. In any such suit, the court shall have juriWwdon to grant a prohibitory or mandatory inunction, either preliminary or permanent, as the fact may ,Hareem. " 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. 2