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CLEANUP AND ABATEMENT ORDER NO. 5-00-704 FORMER CHEVRON STATION #9-5775 l MIEST- KETTLEMAN LANE Dl, SAN JOAQUIN COUNTY hours. GR is scheduled to continue Ivecklti• 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 of petroleum hydrocarbons and fuel oxygenates both on-site and offsite. One deep monitoring well will be installed next to MW -8 to sem•e as 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; eased 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 pgll. 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 conununication with the municipal well. 8. The California Department of Health Ser -,ices Drinking Water Action Level for by tBE is. 13 pg/l, and the Secondary Maximum Contaminant Level for taste and odor is 5 gg/i. 9. Section 13304(a) of the California Water Code provides that: "bey person who has discharged or dEsdharges WaM into the waters of this state in violation of -any ul=e discharge requirement or other order or prohibition Issued by a reTional board or the state board, or who has caused arperrhrftted, causes or permits, or threatens to cause or permit arra- waste to be ditcharged or deposiled were It is. orprnbably will be. disaftarged trr[o the waters ojdhe state and cr eaecs or threatens to create, a condition ofpollution or nutsmX4 shell upon cater ojthe regfoaal board cleanup such "twe or abate de a ear of the wale, or, to the cane Of dWeatened poUghon or nutsancA take other necessary remedial adlon, trcud3n& but not limited do. overwetng cleanup and abatement efards. Upon failure ojany person to compo, with the cearrup and abatement order, dhe Attorney Gear& at the requaf ojthe boar4 shall petition the superior court for drat co=n. -Ar the issuance ojan lWunctfon requiring the perran to Comply with the orde In any such suit, the court shall have jurisdicrion to 9mnt a prohibitory or mandatory iPluncelon. either prer[minary or permanent, as the jact may w arraru. " 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. K