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i <br /> r i <br /> c <br /> 'P23 <br /> X988 <br /> ENVI NIVENTAE HEAP. <br /> RELEAF VALVE PER ITlsERVICE <br /> VAPOR TRAP <br /> TAN K <br /> VARIABLE SPEED EXCAVATION <br /> BLOW E R -f <br /> & MOTOR <br /> RELEAF VALVE <br /> Y--STRAINER 4" PERFORATED <br /> EXISTING SCHEDUAL 40 <br /> BUILDING -- P.V.C. PIPE <br /> PIPE RISER <br /> with inlet valve <br /> at surface <br /> TOP VIEW <br /> VENT NEAR ROOF LINE <br /> VERTICAL PIPE <br /> XISTING BLOWER and MOTOR <br /> BUILDING GROUND LEVEL <br /> 4" SOLID, 77777 <br /> SCHEDULE 40 P.V.C. RISERS <br /> TANK EXCAVATION! <br /> y ` <br /> 4" PERFORATED'J � <br /> SCHEDULE 40 P V.C. PIPE <br /> SECTION n <br /> NOTE <br /> PLACE 4" VENT LINE ON GEOTEXTI.LE FABRIC <br /> LINING EXCAVATION WITH A MINIMUM OF 6" OF <br /> PEA GRAVEL ABOVE. AND BELOW PIPE. <br /> VENT LINES WITH-IN THE TANK EXCAVATION SHALL BE <br /> PLACED BETWEEN THE TANKS AND THE EDGE OF <br /> THE EXCAVATION. <br /> Dames & Moore <br /> PLATE <br />