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t [ CLEANUP AND ABATEMEN't ORDER NO. S -W704 FORMER CHEVRON STATION #9-5775 301 WEST KETTLEMAN LANE t ' rLODI. SAN JOAQUIN COUNTY Hours. GR is scheduled to continue weekly extraction at EX -1 until an interim pump and treat system is installed. 0 5. On 7 April 2000, GR submitted a workplan to the San Joaquin County Environmental Health Division to install six additional monitoring «'ells to further define the lateral and vertical extent of petroleum hydrocarbons and fuel oxygenates both on-site and offsite. One deep monitoring 1 , well will be installed next to h7W-8 to sen -e -_s a sentinel well between the on-site contamination and the active City of Lodi_Municipal Well 12' (City Well 12). .: G. City Well 12 is about 500 feet southwest and downgradient of the fonner 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. The 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 on-site monitoring wells for a 3 -day Fperiod and recorded fluctuation changes corresponding to pumping of City Well 12. GR concluded that the shallow groundwater zone is in conununication with the municipal well. 8. The California Department of Health Ser%ice_ 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: Any person who has discharged or discharges wcme into the eaters of this state in violation of any waste discharge requirement or other order or prohlbition issued b.- a regional board or the state board, or who has caused or permitted, f causes or permiu, or threatens to cause or permit any %x to to be discharged or deposited w herr it is, or probably will be, discharged into the water: of the state and creates or threatens to urate, a condition of pollution or nutsanm shall upon order of the regional board cleanup such uvwe or abase the eBecars of the wiaste, or. in the ease of threatenedpaMalon or nutsance, tate other necessary remedial action, irrluding, but not limited to, om sedng cleanup and abatement efforts Upon failure ofany person to comply WM the cleanup and abatement order, the Attorney General. at the request of the bo=4 shall petitloti the superior court for that cozmo for the issuance of an injunction requiring theperson to -comply with the order. In any such suit. the court shall havielurisdiction to grant a prohibitory or mandatory Injunction, tither preliminary or permanent, as the fact may worranr. " y 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 F condition of pollution or nuisance. F t— 'i