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<br />LEGEND: <br />® COVER SOIL <br />© COMPACTED NATIVE SOILS <br />(SC, CL.) <br /> <br />NOTES: <br />1~ <br />1.) KEYWAY RECOMMENDED FOR FILLS 6 AND 7. USE DEPTH = 6 FEET, <br />WIDTH = 20 FEET FOR EXCESS SPOIL FILLS. INSTALL KEYWAY <br />AT LOWER TOE OF FILL FROM CENTERLINE OF DRAINAGE <br />OUT TO BOTH SIDES UNTIL BEDROCK IS ENCOUNTERED <br />2.) NATURAL SANDS OR CLAYS PLACED~IN KEYWAY SHOULD <br />BE COMPACTED TO AT LEAST 95 P~R CENT OF MAXIMUM <br />STANDARD DRY DENSITY (ASTM 698) AND WITHIN 2 <br />PERCENT OF OPTIMUM MOISTURE CONTENT. <br />~/ <br />~X~l~/T /3~ ~(p Ul~~ S <br />~ ~u ~i~~>y ~~~~T1 >> <br />a <br />LOrenc16D Surface Mina <br />Job'No. 32,611 <br />Typical <br />Keyway <br />Detail <br />Flg. 5 <br />