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XE RXES® <br /> a zcL company <br /> September 25, 2013 <br /> Via e-mail: mvpeng(a-)_att.net <br /> Mark Vendeiro <br /> MVP Petroleum Engineering, Inc. <br /> PO Box 281, <br /> Folsom, CA 95763, United States <br /> Mark: <br /> This letter outlines the procedure that Xerxes Corporation personnel will follow to Inspect <br /> and repair a Xerxes 10-foot-diameter, 12,000-gallon X 10,000-gallon Double-Wall III, <br /> underground gasoline storage tank, UL#R-8459904. This tank is located at Pacificwest <br /> Petroleum Inc.(ARCO SS) 550 W. Valpico Rd. Tracy, CA 95376 <br /> Background <br /> On or about August 01, 2013, Xerxes received a call from you reporting that during a <br /> regularly scheduled interstitial space sensor inspection, Brine had been found in the <br /> Primary product of Diesel fuel. Xerxes asked specific test procedure questions and <br /> requested more details. <br /> Inspection and Repair Procedure <br /> The repair process will follow the Fiberglass Petroleum Tank and Pipe Institute (FPTPI) <br /> Recommended Practice T-90-01 (Remanufacturing of Fiberglass Reinforced Plastic (FRP) <br /> Underground Storage Tanks) and Xerxes Confined Space Entry Procedures. Xerxes Certified <br /> Field Service Technicians will do this work. <br /> The first step after the tank is tested and deemed safe for entry. The Xerxes technician will then <br /> enter the tank and make a visual inspection and take internal deflection readings that will <br /> determine if the tank is under stress due to faulty installation. After the Xerxes technician has <br /> discovered the leak or problem, the area will be marked. Xerxes Corporate Professional <br /> Engineers will be contacted and given a repair procedure to follow. The breached/ Fractured <br /> area will be sanded to expose glass fibers and then, using approved UL materials, the area <br /> would be laminated to insure the repaired tank thickness is equal to or greater than the original <br /> inner tank thickness. This work would be done by hand using the contact molding method of <br /> fabrication. No spray equipment would be used. All safety procedures would be followed <br /> including the venting of the tank with a venturi along with constant monitoring of the interior tank <br /> environment to insure safe working conditions. <br /> CORROSIONa <br /> ZCL aZCLcompany XERXES ZCLDUALAM" ZCLTROY = EAM <br /> a zcL company <br />