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CLEANUP AND ABATEMENT ORDER NO. 5-00-704 FORMER CHEVRON STATION #9-5775 301 WEST KETTLEMAN LANE F C, LODI. SAN JOAQUIN COUNTY hours. GR is scheduled to continue Aveckly 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 Environniental Healtil Division to install six additional monitoring wells to further define the lateral and vertical extent of petroleuni hydrocarbons and fuel oxygenates both on-site and offsite. One deep monitoring well will be installed next to MW -8 to sen -e as a sentinel well between the on-site contamination and the active City of Lodi -Municipal Well 12 (City Well I2). r i; 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 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. S. The California Department of Health Ser%ices Drinking Water Action Level for MtBE is 13 µg/1, and the Secondary Maximum Contaminant Level for taste and odor is 5 µg/l. � 9. Section 13304(a) of the California Water Code provides that: Anyperson who has discharged or discharges wasre into the waters of this state in violation of any waste discharge requirement or other order or prohibit on issued &- a regional board or tlhe state board, or who has caused or permitted, causes or permits, or threatens to cause or permit am waste to be discharged or deposited where it is, orprobably will be, discharged Into the winters ojthe state and c+eeates. or rhmatens to erste. a condition ofpollution or nuisances shall upon order of the regional board deanup suds waste or abatr the effeds ojthe utwe. or. in the case of duvweteed pollution or nuisance, take other necessary remedial action, including, but not limited to, overseeing cleanup and abatement efforts. Upon failure of any person to compb, with the cleanup and abatement order. the Attorney General, at the request of the board, shall petition the superior court for that ocrunr • for the issuance of an injunction requiring the person to comply with the order. rn any such suit, the court shall have jurisdiction to grant a prohibitory or mandatory Injunction, either preliminaryor permanent, 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 asspecified in the Basin Plan include run 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. F" 2