SITE INFORMATION AND CORRESPONDENCE

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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. R5-2007-0808 FOR NEW WEST PETROLEUM/FLAG CITY SHELL SAN JOAQUIN COUNTY This Monitoring and Reporting Program (MRP) is issued by the Executive Officer of the Regional Water Quality Control Board, Central Valley Region, (Regional Board) pursuant to California Water Code section 13267(b)(1). The New West Petroleum/Flag City Shell (Site) is located at 6437 Baner Street in Lodi (Figure 1). J. Gilbert Moore and Eileen A Moore currently own the property and New West Petroleum Inc. operates the tanks at the fueling station, and are hereafter collectively identified as the Dischargers. In June 2006, the Underground Storage Tanks (USTs) Site was transferred from San Joaquin County Environmental Health Department (SJCEHD) Local Oversight Program to the Regional Board. The Dischargers have discharged and/or are suspected of having discharged waste that could affect the quality of the waters of the state. Existing data and information about the site show the presence of petroleum hydrocarbons and fuel additives emanating from the property under the control of the Dischargers, and resulting from the Dischargers' current or past operation. Petroleum hydrocarbons, including Methyl tert-Butyl Ether (MtBE) detected in groundwater beneath the property and offsite, appear to be the result of a release from past operations of the fueling station. The Dischargers have installed, and began operation in September 2006, an Interim Groundwater Extraction (GE) remediation system at the USTs source area. The Dischargers are continuing to delineate the vertical and lateral extent of waste in groundwater, prior to submitting a corrective action plan for cleanup of the site. The depth to groundwater is approximately 12 feet. There are two San Joaquin County supply wells downgradient of the MtBE plume at Flag City: 1. CSA-31 Well 2, located approximately 900 to 1,000 feet southeast of the Site, and 2. CSA-31, Well 1, located approximately 1,000 feet to the east of Well 2. Site monitoring well MW-613, located approximately 400 feet from CSA-31 Well 2, has been impacted by MtBE since March 2006. The constituents found at the site are "wastes" as defined in California Water Code section 13050. The wastes discharged at the site impair the beneficial uses of waters of the state. This MRP is necessary to delineate the extent of waste in groundwater and to determine the effectiveness of cleanup actions at the site. The Dischargers shall not implement any changes to this MRP unless and until a revised MRP is issued by the Executive Officer or until Regional Board staff approve those changes in writing. Prior to construction of any new groundwater monitoring, treatment or extraction wells, and prior to abandonment of any groundwater monitoring, treatment or extraction wells, the Dischargers shall submit plans and specifications to Regional Board staff for review and approval. Once installed, all new wells shall be added to the monitoring program and shall be sampled and analyzed according to the schedule below.