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May 17, 2013 UL <br /> Containment Solutions, Inc. <br /> Mr. Bill Schneider <br /> 5150 Jefferson Chemical Rd. <br /> Conroe, TX 77301 <br /> Our Reference: MH7991 <br /> Subject: Nonmetallic Underground Storage Tanks for Petroleum Products, <br /> Alcohols, and Alcohol-Gasoline Mixtures <br /> Dear Mr. Schneider: <br /> This is to confirm that the following products have been investigated <br /> By UL LLC, and have been found to comply with the current requirements of UL1316, <br /> Standard for Glass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum <br /> Products, Alcohols, and Alcohol-Gasoline Mixtures, and are eligible to bear the UL <br /> Listing Mark when constructed in accordance with the Follow-Up Service Inspection <br /> Procedure, File MH7991, Volumes 1 and 2. <br /> Tank Model Diameter (Ft) Capacity (Gal) UL Report <br /> Date <br /> Single Wall Tank 4 550-2000 1982-03-17 <br /> Model D-5 <br /> Single Wall Tank 6 2000-10000 1982-03-18 <br /> Model D-6 <br /> Single Wall Tank 8 4000-20000 1982-03-19 <br /> Model G-6 <br /> Single Wall Tank 10 10000-50000 1982-03-18 <br /> Model D-6 <br /> Single Wall Tank 11-1/2 20000-50000 1982-03-18 <br /> Model D-6 or D-7 <br /> Single Wall Tank 12 25000-48000 1982-03-18 <br /> Model D-6 <br /> Double Wall Tank 4 550-2000 1994-01-28 <br /> Models DWT6, DWT6a, DWT6b <br /> and DWT6c <br /> Double Wall Tank 6 2000-10000 1993-12-29 <br /> Models DWT6, DWT6a, DWT6b 2000-01-07 <br /> and DWT6c <br /> Double Wall Tank 8 4000-20000 1993-12-29 <br /> Models DWT6, DWT6a, DWT6b 2000-01-07 <br /> and DWT6c <br /> Double Wall Tank 10 10000-50000 1993-12-29 <br /> Models DWT6, DWT6a, DWT6b 2000-01-07 <br /> and DWT6c <br /> Double Wall Tank 12 50000 maximum 2000-01-07 <br /> Models DWT6, DWT6a, DWT6b <br /> and DWT6c <br /> UL LLC <br /> 333 Pfingsten Road,Northbrook,IL 60062-2096 USA <br /> T:847.272.8800/F:847.272.8129/W:UL.com <br />