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CLEANUP AND ABATEMENT ORDEF R5-2011- -5- VALLEY PACIFIC PETROLEUM SERVICES INC. 930 VICTOR ROAD, LODI,SAN JOAQUIN COUNTY 22. Valley Pacific's 30 June 2008 Monitoring Plan for Well Installation Valley Pacific shows that there is a UST of unspecified volume at the western end of the dispenser island. The UST is at two-part tank that was installed in 1996 and stores regular and premium unleaded gasoline that is dispensed at the card lock islands. Valley Pacific submitted an 18 July 2008 Feasibility Study that selected soil vapor extraction/air sparging ("SVE/AS") as the remedial technology for Site cleanup and installed MW-14 in December 2009 to delineate the eastern extent of the plume. 23. Valley Pacific conducted a SVE pilot test in July 2010 using .14 ple-nested extraction well. The individual wells were called VEW1-S, VEW1-1 andVUEW1-D based on their progressively deeper screened intervals. Valley Pacific's 1 October 2010 Soil Vapor Extraction Pilot Test Report reported that extracted vapors contained up to 82,000 pg/L TPHg, 260 pounds of gasoline hydrocarbons were rerioved during the 24 hour test, and the radius of influence ("ROI") for the deep extraction well, VEW1 as observed to be 50 feet. Valley Pacific selected SVE, with the possible addition of AS gas the remedial technology for the Site. During routine groundwater monitoring activities in December 2010, Valley Pacific observed 0.17 foot of LPH in extraction well VEW1 D; / 24. Valley Pacific's 29 December 2010 Corrective Action>Plan proposed implementing SVE through the existing SVE wells, and,`potentially one additional SVE well, with the potential addition of AS. In their 21 April 2011 letter, Valley Pa'clfic clarified that they would use AS in conjunction with the selected SVE remedy to clean up the Site. Board staff provided concurrence with the remedy in a 29_ ril 20121.:,letter. In June 2011, Valley Pacific's environmental consultant stated that they would;msfall the SVE system at the Site contingent on attaining closure at a an, Clara Valley site where the SVE system the consultant is currently using the system Ina 24 October email, the consultant stated that Santa Clara County had grantedpermission;to remove the SVE. However, according to the email, Valley Pacific needs euthorization'from several regulatory agencies to install the SVE system at the Site y d v:'y 25. Valley Pacific has not completed a.sensitive receptor survey for the Site. The nearest surface water body, the`Mokelumne River, is 0.6 mile north of the Site. A survey of I�unicipal supplyniells, conducted by Board staff using Geotracker, showed that there are noCalifornia Department of Public Health wells located within 2,000 feet of the Site. AUTHORITY — LEGAL REQUIREMENTS 26. Petro leumhydrocarbons discharged to and deposited within soil at the Site will continue to migrate to groundwater, float as liquid on groundwater, and/or dissolve into groundwater. Petroleum hydrocarbons dissolved in groundwater will continue to disperse and migrate to unaffected and less affected waters. These petroleum hydrocarbons will continue to alter the quality of groundwater to a degree that unreasonably affects the waters for designated beneficial uses, continuing and expanding a condition of pollution, unless cleaned up. 27. Water Code section 13304(a) states that: Any person ... who has caused or permitted, causes or permits, or threatens to cause or permit any waste to be discharged or deposited where it is, or probably will be,