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TASMAN <br /> CAL PH <br /> A � SUN YVALL, DRIVE 40 M E M B E R <br /> }t 1 `l SUNNYVALE,GA 94089 <br /> 400-0741 <br /> CO �S U A IO tel, INC, FAX}(408)00-0519 TE <br /> I W <br /> LICENSE#737351 EWP�Ni <br /> r,/,I <br /> RECEt' W <br /> September 14. 2006 SEP G I Mb <br /> Mr. Chris Panaitescu JWRONMENT Ki ,I T, <br /> Thrifty Oil Company FERMIT,SFP <br /> 13116 Imperial Highway <br /> Santa Fe Springs, CA 90670 <br /> RE:Th ri Station#172 7647 Pacific Ave.Stockton CA Temn-rary Closure Re ort_ <br /> Dear Mr, Panaitescu, <br /> This letter report is to describe the activities and services performed by CALPHASE CONSTRUCTION, <br /> INC, on behalf of Thrifty Oil Co., to complete the temporary closure of three 12,000 gallon gas tanks at <br /> the above location. <br /> This work was completed under permits approved by San Joaquin County Environmental Health <br /> Department(SJEHD)and the Port of Stockton Fire Department(letter of approval attached). <br /> SITE SERVICES PERFORMED: <br /> Thursday 917/2006 <br /> Arrived on site at 8:00 AM, reviewed site safety plan, completed tailgate safety meeting. <br /> • Removed covers from three dispensers, removed piping sump manway covers, check valves <br /> were already removed from the submersible pumps. <br /> • Complete Lock Out Tag Out of electrical supply to submerged pumps. Power wiring <br /> disconnected at pump in junction box„ electrical contractors plug disconnected. <br /> • Removed test plugs from shear valves, starting at the south dispenser nitrogen was used to <br /> purge the lines: product was returned to the tanks.. <br /> • Asbury arrived on site at 9:15 AM and started setting up to pump liquid from the tanks. <br /> • The fill drop tube, vapor recovery tank fitting and the in tank probe was removed from each <br /> tank; water was used to rinse each tank. As the tanks were being rinsed Asbury removed the <br /> liquid from the tank using a vacuum truck. <br /> • Asbury completed pumping liquid from the tanks at 11:30 AM. Approximately 900 gallons of <br /> liquid was pumped out and transported for recycling (manifests attached) <br /> • At 1:00 PM Cal 'Phase started placing nitrogen into the regular tank in order to inert the tank. <br /> • The LEL was tested several times over the next hour and nitrogen was added in an attempt to <br /> lower the LEL as required by permit, Three bottles of nitrogen was used and the LEL in the <br /> regular tank would not lower. <br />