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cr <br />2 <br />IL <br />CID <br />M <br />0 <br />w <br />RUNOFF FROM <br />ONSITE BASIN 30 <br />5622.25 p <br />100 YR. ELEV. <br />10' 1 <br />SECTION A -A' <br />N TS <br />RUNOFF FROM <br />OFFSITE BASIN 10 9' J PROPOSED PORTAL ACCESS ROAD <br />—I (GRADING REVD.) <br />LONGITUDINAL SLOPE OF INSTALL: <br />DITCH TO MATCH EXISTING PROPOSED DIVERSION DITCH <br />ROAD GRADE: (VARIES) 0 COL ECT /DIVERT OFFSITE <br />S = 1.07. (MIN.) BASIN 10 RUNOFF <br />S = 12.0% (MAX.) <br />PROPOSED ROAD DITCH <br />SECTION B -B' <br />(ALSO SECTION 10 -1) <br />NTS <br />ELEV. 5623.0 <br />3.• 1 <br />IMPOUNDMENT <br />RETENTION <br />POND <br />BASKET STRAINER <br />8" HIGH (MIN. <br />1/4" OPENINGS (MAX. <br />12" MAX <br />' 4" PVC Sm = 1/4" PER FOOT <br />4" THREADED CAP ■ <br />(REMOVE TO ALLOW 4 TEE DAYLIGHT TO DRAIN <br />-�� PIPE CLEANING) <br />- 4" POND DRAIN <br />N TS <br />INSTALL SPILLWAY ON NORTH SIDE OF PROPOSED <br />IMPOUNDMENT EMBANKMENT (ADJACENT TO EXISTING <br />NORTH —SIDE TERRAIN). <br />TOP OF 5622.75 TOP OF RIPRAP EXISTING <br />EMBANKMENT 5623.00 NORTH SIDE <br />TERRAIN <br />ELEV.m p 5622.25 day <br />z IN aa171 1 ,,,,, — 7.17 cf <br />COMPACTED 5620.5 <br />EMBANKMENT * SLIGHTLY ABOVE 10 —YR <br />STORAGE VOLUME / 12" THICK RIPRAP BLANKET: <br />OF 5620.14 4' dA�GU 8 (APPROX.)Al1VE MATERIAL) <br />(MIN. <br />* — USE NATIVE MATERIAL FROM DETENTION POND EXCAVATION. <br />INSTALL AS LOCATED ON PLAN IN 6" LIFTS (MAXIMUMUM). <br />WHEEL ROLL EACH LIFT TO MAXIMUM VISUAL COMPACTION. <br />2' <br />SECTION C -C' <br />co <br />p <br />4' <br />(MIN.) <br />SECTION D -D' <br />,`4 f _ • A P/I� <br />4 <br />id RW DATE 5J20/2013 oRW+ BY me a7E 9/5/2012 � 2350 G Road <br />DRAINAGE CHANNEL CROSS - SECTIONS & DETAILS <br />,, ®— °MTEp,m �,E 9/5/2012 O Connor l�es�►n Group Inc G� °�' �° 81505 DRAINAGE DESIGN PLAN <br />v ®_ aw ccKEO By ago o+�� 915/2012 • Phone: (970) 241 -7125 <br />Fax (970) 241 -7852 COTTER CORPORATION MINE SR -13A ismm 5 of 5 <br />