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~.~'~*'~- RAIN VENT CAP <br /> NATIVE SOlE 6" PVC STANDPIPE <br /> BACKFILLED &: <br /> PAINTED TO REDUCE <br /> ULTRAVIOLET EtVIBRll'II_EM ENI' <br /> (150' - 175' SPACING) <br /> <br /> TYPAR OR 40 MIL PVC OR <br /> MIRAFI FILTER 40 MIL HDPE <br /> FABRIC -- SIDEWALL CURTAIN <br /> <br /> ~ BALLAST ROCK <br /> BACKFILL <br /> (2' TO ,~' B~A) <br /> <br /> 8' PVC SCHEDULE 40 <br /> TRENCH BASE PiPE 560' PERFORATED <br /> APPROX ONE FOOT <br /> INTO LOW SEASONAl <br /> WATER TABLE <br /> <br />METHANE GAS CUT-OFF VENT TRENCH <br /> NO SCALE <br /> <br /> , , CDM' <br /> <br /> <br />