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4" EXTRACTOR RISER <br />IN 8" MANHOLE - <br />2' - 0 <br />coj <br />3"VAPOR RISER 1a <br />IN 12" MANHOLE <br />4 FILL-R-iSER_ IN 12" ` I <br />LEAKPROOF MANHOLE <br />4I TANK MANHOL= <br />TYPICAL FILL/VAPOR RISER ORIENTATION <br />INI <br />i� 22" MANWAY WITH 2 Wit` <br />�i 4" NPT FITTINGS Y <br />iI 1 4 C/C IN COVER \ •. <br />. � ••� � moo. ,� <br />i <br />1" LEAK DETECTOR PORT- <br />--�. �� I 2" LEAK DETECTOR PORT <br />OWENS-CORNING DOUBLE WALL TANKS (MODEL DWT -1) WITH. 3-22"0 MANWAYS - GASOLINE STORAGE <br />STAGE II VAPOR RECOVERY SYSTEMS WITH OVERFILL AND SPILL PROTECTION <br />TYPICAL FILL BOX ORIENTATION & PIPING AT FILL END OF TANK <br />ENGINEERING SKETCH PAD �;�VED 0r <br />® OIL 0 CHEMICAL AP <br />-84\1^ <br />DEVELOPMENT <br />