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DEC 19 Y9013:15 B P.3 <br /> 0 <br /> ARROW TANK WORKS <br /> 1701 SOUT14 BARNEY STREET <br /> Mailing Address,, P.O. Box 563 <br /> ANDERSON, CALIFORNIA %W7 <br /> PHONE (9 6j 365-5434 <br /> INSTALLATION, <br /> We recommend that our unde-fg;-ovrid tanks be Installed with a minimum <br /> cover of two feet of compacted soill, or one toot of it under a reinforced con. <br /> crete pad of not less than 4" thick, However, in areas when the installed tank <br /> will be subjected to va.1,15cular traffic, they shall be protected by a minimurn of <br /> of Com-aM& - eo'i pli s 6" of reinforced concrete, or 8" of asphalt pavin <br /> i 51W d �z 1 4 do <br /> extending at least one foot from the tank in all directions, or by a minimum of <br /> feet feet of sol-HL The excavation shall be free of any liquid during the installa- <br /> tion procedure. <br /> T he tanks shall be completely empty during installation to prevent any tI - <br /> Strthithe tanks. If itis nec-essan- y to fill the tanks with product before <br /> ess win t <br /> -kfilling, the product level must not exceed the compa�ted backfil! level, <br /> The tank excavation shall be fi,,m soil suitably graded level, and have a" <br /> of clear, sand or 6" s gravel. The tanks shall be encompassed by clean <br /> sand or pea gravel. there shall be no stones or other matter allowed to come <br /> in contact with the tanks. <br /> I LIM 11--inn giltsis such that the tanks require a concrete balast slab <br /> and hold down ianrap-2, refer to our hold down chart and NFPA pamphlet #30. <br /> Mlaterial used for backfii! must bre capable of being 95% compacted. The <br /> --in ar s <br /> 4.11 shall be placed in 6" layers and tamped down. Cradles or chr—king <br /> blocks should not be used. They may cause lank failure due to strez_�-a <br /> Y <br /> concentrations. <br />