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MIDCONTINENT RESOURCES <br /> COAL BASIN COLORADO <br /> TABLE 2 <br /> SUMMARY OF DRAINAGE STRUCTURES <br /> AVERAGE DRAINAGE CONTROL NOTES <br /> SLOPE STRUCTURES <br /> ROAD LENGTH CULVERTS DITCHES <br /> (FT) I (EXISTING , PROPOSED I EXISTING PROPOSED <br /> A 6400 7.9 9 ( 1 Main Road to <br /> Rock Tunnel <br /> B 3820 9.8 3 2 <br /> 1 <br /> C i 12800 7.9 ( i 1 2 6 Mine 4 <br /> D 12900 8.6 5 j 3 4 Mine 1 & 2 <br /> E 6240 8.7 3 I 2 <br /> F 11200 8.4 3 18 5 Mine 3 - <br /> i I I I Includes <br /> Culvert on <br /> j Road 6 <br /> G 19100 j 2.7 i 27 ( 2 i 3 ,Mine 5 <br /> TOTAL 72460 ( 57 17 21 1 <br /> 26 <br />