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<br />.r <br /> <br />• <br />PORTAL ti 8' <br />INITIAL BACKFILL <br />2' MINIMUM <br />DRAIN, 3 4 INCH CLEAN -' <br />GRAVEL tASTM C33, N0. 57) <br />WRAPPED IN FILTER FABRIC. <br />(MIRAFI 140N OR EQUIVALENT) <br /> <br />6' MINIMUM <br />1' MINIMUM <br />SLOPE BASE OF TRENCH <br />MINIMUM 17, TO OUTLET. <br />n <br />" <br />Job No. 25,863 <br />.,~ <br />Conceptual <br />Drain <br />Section <br />SCALE: i"=5' <br />FlQ. 6 <br />