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• All sand must be compacted to a minimum 90% • • • • , <br /> standard proctor density. Sand should be compacted <br /> in maximum 12 inch lifts. Compaction may be , <br /> accomplished by the use of hand-held compaction <br /> equipment, such as mechanical plate vibrators Fuel vapors may be present in the tank sump.To <br /> operating at 2000 to 3000 vibrations per minute. prevent fire or explosion hazard,keep all ignition <br /> • Prior to placement of at least three feet of cover over sources away when removing sump enclosure lid. <br /> the tank, no vehicular traffic or surface loads imposed Treat any entry into sump area as confined <br /> p space entry. <br /> by vehicle compaction equipment are allowed. <br /> 0Milk <br /> Important: Isolate All Sumps From Direct Traffic <br /> Loading. <br /> Figure H-'I ASPHYXIATION FIRE EXPLOSION <br /> Manhole Watertight Reinforced Concrete <br /> Sump Lid Leak test containment collar and sump every 12 <br /> months, using standing water test(section F). <br /> Anytime sump components have been abused, <br /> 2"min. damaged, or worn, test sump immediately for <br /> Rigid Board potential leaks.Test more frequently if codes require. <br /> (5'x 5'x 3/4") Enclosure Top <br /> • The o-ring lubricant will require periodic replacement <br /> OptionSump Bodyund as it will degrade over time.Any lubricant that will <br /> -- Extension not dissolve in gasoline or water, nor attack Buna-N <br /> rubber is acceptable. While not as long lasting, other <br /> Polygon or Round lubricants like barium grease, or petroleum jelly can <br /> Sump Body also be used. Lubricant can be applied directly to the <br /> o-ring or to the inside surface of the lid flange. <br /> Adhesive Channel <br /> • Remove the WT lid by using one handle along the <br /> Electronic Containment Collar edge of the lid. <br /> Leak Sensor <br /> • The gasket is a maintenance item which will have <br /> to be replaced periodically or when it shows a leak <br /> during a tightness test. <br /> After backfilling to top of sump • The sump must be continuously monitored with an <br /> • Backfill around sump top to a minimum of 2" above electronic leak detector for potential spills or leaks. <br /> the horizontal position of the enclosed top. Place a <br /> 5'x 5'x 3/4" rigid board with hole cut out to fit around <br /> tank sump on backfill to support concrete and provide 0N CHECkLlSi� <br /> a channel for water runoff(see Figure H-1). <br /> • Use a grade access manhole large enough to allow • See next page. <br /> sump lid removal after installation. <br /> • Pour slab directly onto rigid board. <br /> • If the sump is located in a traffic area, the concrete <br /> traffic pad, reinforcement and thickness, must be <br /> designed for job conditions and traffic loads to assure <br /> concrete traffic pad integrity. It is the responsibility <br /> of the tank owner or tank owner's representative to <br /> design the traffic pad for all loads. <br /> Copyright©2008 Containment Solutions,Inc.•All Rights Reserved•Litho in U.S.A.,December 2008•Pub.No.INST 6030E <br /> 6 <br />