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Figure C -7: Subdrain Detail <br />M1990 -057 May 14, 2013 <br />SUBDRAIN DETAIL <br />SUITABLE h1ATERIAL <br />_ <br />P,BOVE SUBDRAIN, <br />COMPACTED TO <br />• y, PROJECT SPECS <br />PERMEABLE <br />LPNER <br />1 KN <br />OR APPROVED <br />EQUIVALENT <br />GROUND',VATER N�EEP <br />— MIN,_. <br />3/4" SCREENED ROCK: <br />— -- � <br />R <br />95 COMPACTION <br />— <br />- 161PERVIOUS <br />LAYER <br />N TS <br />a <br />'��yr <br />�.r fc..INv vrfwc.. <br />M1990 -057 May 14, 2013 <br />