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D. Installation Instructions: Contractor shall submit copies of <br /> manufacturer's current installation instructions. <br /> PART II Products <br /> 2.01 GLASTEEL II Underground Storage Tanks <br /> A. Loading Conditions: Tanks shall meet the following design criteria. <br /> 1 . Surface Loading: When installed according to manufacturer's <br /> installation instructions, tanks shall withstand surface H-20 axle loads (32,000 <br /> lbs/axle). <br /> 2. Internal Load: Primary tank shall withstand an air pressure test of 3-5 <br /> psi. Secondary tank shall be vacuum tested. <br /> WARNING: Follow manufacturer's testing instructions to avoid damage to the <br /> secondary tank. Do not apply positive pressure. <br /> 3. Tanks shall be designed to support accessory equipment such as <br /> ladders, submerged pumps, containment sumps, etc. when installed according to <br /> manufacturer's instructions and limitations. <br /> 4. Tanks shall be designed in such a manner to provide for monitoring of <br /> the interstice. <br /> 5. Primary tank shall be designed per Underwriters Laboratories, Inc. UL- <br /> 58 / UL-1746 part 3 standard. <br /> B. Produce Storage Requirements <br /> 1. Tanks shall be capable of storing liquids with specific gravity up to 1.1. <br /> 2. Tanks are designed for operation at atmospheric pressure only. All <br /> primary tanks shall be vented. <br /> 3. Tanks shall be capable of storing gasoline, gasohol, jet fuel, avgas, <br /> diesel fuel or methanol at ambient underground temperature or used for fuel oil at <br /> temperatures not to exceed 120 degrees Fahrenheit. <br /> 4. The interstice shall be monitored. <br /> C. Dimensional Requirements <br /> 1 . Nominal capacity of the tank shall be gallons. <br /> 2. Nominal outside diameter of the tank shall be inches. <br /> 3. Overall length of the tank shall be approximately feet, <br /> inches. <br /> 2.02 Accessories <br /> A. Certification Plate: Underwriters Laboratories, Inc. Listing Mark for jacketed <br /> underground tank for flammable liquids storage. <br /> B. Fittings — NPT <br /> 1. All threaded fittings shall be of a material of construction consistent with <br />