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INSULATED <br />�,,VENT <br />PIPE <br />C" r AN <br />UOT- <br />LOCATE THE SEPTIC TANK <br />NEAR THE MAIN SOURCE <br />OF S'VIAG E <br />[..,NO CLOSER <br />THAN 10' <br />6" TO 12" OF <br />EARTH COVER <br />TO SOIL <br />TREATMENT <br />UNIT <br />