SITE INFORMATION AND CORRESPONDENCE_FILE 2

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SUMMARY OF PLANNED ACTIVITIES FOR UNDERGROUND STORAGE TANK REMOVAL AND POTENTIAL SOIL EXCAVATION ACTIVITIES Best California Gas, Ltd. Station No. 172/Former Circle K Station No.2705449 7647 Pacific Avenue Stockton, California Best California Gas, Ltd is planning on excavating and removing the three 12,000-gallon underground storage tanks (UST), fuel dispensers, and associated underground fuel piping located at the above referenced address. The permanent closure of the existing UST is following a12 month temporary closure which was previously approved by the San Joaquin County Environmental Health Department (SJCEHD). The permanent closure of the UST at the above referenced site is the decision of the owner of the property who after 12 months of temporary closure is required by the CCR, Title 23 to either restart using the UST by receiving and delivering fuel, or to pull the tanks out. It appears that during the 12 months of temporary closure, Best California Gas was not able to receive an acceptable offer for leasing out the service station to another operator, and consequently they applied for permanent closure of the UST in order to comply with applicable laws, rules and regulations. Since the owner of the property is still conducting a feasibility study, the future use of the site is unknown at this time. The tanks have already been triple rinsed and cleaned for in-place closure previously so they currently do not contain any fuel. The tanks and fuel piping will be unearthed and inspected and the dispenser, underground fuel piping, and underground tanks will be removed from the site. Soil samples will be collected for laboratory analysis at the direction of the County inspector. If any hydrocarbon impacted soil is apparent in the bottom of the tank pit excavation, up to an additional three feet of soil will be excavated, sampled, stockpiled, covered with plastic, and properly removed from the site for disposal or recycling. The volume of impacted soil to be excavated, if present, is expected to be approximately 200 cubic yards or less. During this entire process the air emissions from the excavation will be monitored at regular intervals with a photo-ionization detector (PID)by onsite field personnel to ensure that any volatile emissions are kept to a minimum and Air Pollution Control District emission standards are not exceeded. If elevated emissions are detected, engineering controls for vapor emissions will be implemented. In addition, if dust emissions become any issue soil may be properly wetted to suppress dust emissions. Once this process is completed, the excavation will be backfilled and resurfaced. It is anticipated that the underground tanks, piping, and dispensers will be completely removed by December 12, 2007. Excavation of petroleum impacted soil form the bottom of the tank pit, if necessary, should be completed in approximately 2 days after tank removal. The project described above is anticipated to be completed by the end of December 2007.