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12 ft <br />JBollard 4" x 6'— <br />Ground (3 per Riser) <br />Surface —r- <br />3 <br />ft <br />7 f 6 f <br />PV40 4" Slip Cap PV40 4" Pipe <br />0.040 -Slot Size <br />Screen <br />15 ft <br />50 ft <br />PV80 4" Slip Cap <br />Hole Size = 5/16 Inch; Total Holes = Approx. 170/Riser <br />2 ft PV80 4" Pipe <br />PV80 4" Adapter Fem lex Steel Ring Thread <br />J-��4"x 18" RMC Nile with Jeaded Ends <br />Concrete Pad 1h r3 rebar @ 12" OC <br />�--- PV80 4" Pipe <br />PV40 4" Tee <br />50ft I _ 50ft ( 15 ft <br />PASSIVE SOIL VAPOR VENT PIPE <br />SCHEMATIC <br />WORLD ENTERPRISES <br />FRENCH CAMP TURNPIKE ROAD <br />STOCKTON, CALIFORNIA <br />Date; Figure: <br />Drawing not to scale Note: 0831/2006 <br />3 <br />FI . vent_pipe riser.dwg <br />