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+m Stockton Manufacturin & Sales s Co. , Inc. 5109 EAST FREMONT STREET STOCKTON,CALIFORNIA 95205 TELEPHONE (209)9310373 INSTALLATION_ Continued one foot from the tank in all directions, or by a minimum of 3 feet Of soil. The excavation of underground tanks that will not be subjected to vehicular traffic shall be done to provide a minimum cover of two feet of soil, or one foot of soil under a reinforced concrete pad not less than 4 inches thick. The excavation shall also be free of any water or liquid during the installation procedures. The tanks shall be completely empty during the installation to prevent any undue stress within the tank. (In the event a tank must be installed and filled with products before backfilling, the product level must never exceed the compacted backfill level.) The foundation for the tanks shall be firm soil suitably graded, level, and have 6 inches of clean sand or 6 inches of pea gravel. The tanks shall be encompassed by clean sand, pea gravel, or compacted soil free from stones and other matter. (If the ground is not firm soil and/or there is a high water table, the tanks shall be installed with a concrete balast slab and hold down straps refer to NFPA pamphlet #30 for further information.) The backfill material must be capable of being 9710 compacted. The material shall then be placed in 611 layers and tamped down. (Cradles, saddles, or chocking blocks should not be used, as they may cause tank failure due to stress concentrations.) Remove all thread or flange protectors from the unused openings. Then close off these openings with steel pipe plugs or gaskets using proper joining seal. In the event a tank may "Float" or become buoyant due to flooding or a rise in the water table, anchor pre- cautions, such as hold down straps, should be considered. Check with local authorities concerning regulations in your area. WARRANTY We warrant that our underground tanks if installed underground with proper backfill and otherwise installed in accordance with our instructions: 1. Will meet our published specifications and will be free from defects in materials and workmanship for a period of one (1 ) year following date of original delivery by us. 2. Will not fail for a period of thirty(30) years from date of original purchase due to external corrosion; and -2- "Steel Manufacturing Customized"