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INSTALLATION PROCEDURES FOR UNDERGROUND S'T'ORAGE TANKS <br /> GLASTEE6 tr°" 'BEd AND BACKF 1 LL s <br /> ALL EXCAVATED NATIVE $OIL MUST BE REPLACED WITH APPROVED BACKFILL . 1?0 <br /> NOT SACKFILL IN LAYERS USING DIFFERENT MATERIALS , <br /> APPROVED SACKPILL MATERIALS ARE : <br /> I . CLEAN WASHED BAND <br /> 2 . GRAVEL <br /> A CLEAN. NATURALLY ROUNDED AGGREGATE WITH A M I X OF PARTICLE SIZES NOT <br /> LEJS THAN 1 /$' NOR MORE THAN 3/.4' IS REOUIRED . THIS MATERIAL IS <br /> COMMONLY CALLED ►EA GRAVEL . <br /> 3 . $TONE OR GRAVEL CRUSHIN®S <br /> WASHED STONE OR GRAVEL CRU$HINOS WITH ANGULAR PARTICLE SIZE NOT LE$S <br /> THAN 1 /60 NOR MORE THAN 1 /2" IS REOUI RED . <br /> LEAK1,7_ TEST PROCEDURES FOR DOUBLE WALL TANK AT__.1085 1 TE WHILE TANK <br /> ll FaMPTY : <br /> 1 . IF OUTER TANK MAINTAINS AT LEAST 5 .3 IN. HO. OF VACUUM FOR ONE HOUR <br /> BOTH THE INNER TANK AND OUTER TANK MAY BE CONSIDERED PROPERLY <br /> TUSTEG. <br /> 2 . INTERSTIAL SPACE TO BE VACUUM TESTED ONLY. <br /> TA, ANK HANDL 1 NO : <br /> VNDEROROVND TANK(S) ARE SUPPLIED WITH EITHER ONE OR TWO INSTALLED LIFTING <br /> LUGS . DEPENDENT ON TANK SIZE. REFER TO SPECIFIC TANK DRAWINO TO DETERMINE <br /> THE EMPTY LIFTING WEIQMT OF THE TANK. SEE -FINISHING INSTRUCTIONS . * ITEM <br /> NUMBER 7 : FOR APPLICATION OP LIFTING LVO COVERS TO •QL88TEEL' TANK$ PRIOR TO <br /> BACKRILLINO OR COVERING THE TANK. <br /> DO NOT DROP OR ROLL TANK($ ) FROM"TRUCK INTO EXCAVATED OPENING. <br /> LIFTING PROCEDURES : <br /> @° MAX I ALTA <br /> FO° AINIAUP% <br /> r------------ -----� <br /> t I <br /> t 1 <br /> � I <br /> t i <br /> t : <br /> e <br /> TMLSE I N$TALLATI ON I NfTPUCT I ONP TAKF RP�("�"f,�►�nc P.vPr r-" , �^ , .,r-. . .-- <br />