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Well Destruction workplan Moore Petroleum Bulk Plant,5491 `F'Street,Banta,California Page 7 WELL DESTRUCTIONS Non-Contaminated Wells Apex proposes to destroy by pressure grouting eleven groundwater monitoring wells (MW-1, MW-2,MW-4A,MW-5, MW-6,MW-9, MW-12 through MW-14, MW-16, and MW-17), and ten ozone sparging wells (OS-1 through OS-10) associated with the subject site (Figure 2). The wells will be grouted using tremie pipe from the bottom of the well to the surface with Portland cement slurry. After the cement slurry has been placed in the wells,the well heads will be pressurized to 25 pounds per square inch gauge (psig) for a minimum of five minutes. Following pressure grouting activities, the top five feet of each well will be over-drilled and backfilled with the Portland cement slurry to within a foot of ground surface. Each borehole will be finished with a concrete cap dyed to match the surrounding surfaces. Previously Contaminated Wells Apex proposes to destroy by over drilling to total depth two monitoring/vapor extraction wells (MW-7/VEW-4 and MW-8NEW-3), two vapor extraction wells (VEW-1 and VEW-2), one recovery well (RW-2), and five groundwater monitoring wells (MW-3, MW-10, MW-11, MW-15, and MW-18) associated with the subject site(Figure 2). The wells will be over-drilled to total depth with an auger equal to or greater than the original boring diameter. Following the over-drilling activities, the resulting borehole will be grouted with a Portland cement slurry using tremie pipe from the bottom of the well to the surface through the center of the hollow stem auger flights. The boreholes will be finished with a concrete cap dyed to match the surrounding surface. Underground remediation piping connecting the vapor extraction wells, recovery well, and ozone sparging wells will be removed if possible or will be grouted in place using a Portland cement slurry. All drill cuttings will be stockpiled on site and sampled for disposal purposes. The well destructions will be permitted with the SJCEHD and encroachment permits will be obtained for destruction of off-site wells. SCHEDULE Upon approval of this workplan by the SJCEHD, work will be scheduled for the destruction of all wells. Upon completion of destruction activities, a well destruction results report will be prepared and submitted to regulatory agencies. SITE SPECIFIC HEALTH AND SAFETY PLAN A site specific Health and Safety Plan (HASP) will be prepared, uploaded to geotracker, and will be retained on site during all field activities. All work will be conducted according to the HASP. The HASP will contain information on the properties of the hazardous materials known to be on the site. This information is equivalent to that contained within Material Safety Data Sheets.