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LS <br /> TWENTYMILE COAL COMPANY <br />• POND D -Length/Slope (LS) Estimation <br /> AREA LENGTH SLOPE <br /> (tt) (%) <br /> SWS1 #1 1000 14 <br /> #2 1000 30 <br /> #3 1000 15 <br /> #4 800 22 <br /> #5 500 10 <br /> #6 500 10 <br /> #7 400 20 <br /> Avg. 742 17.2 <br /> SWS2 #1 2000 14 <br /> #2 1000 15 <br /> #3 1000 15 <br /> #4 1000 15 <br /> Avg. 1250 14.8 <br />• <br /> SWS3 #1 450 33 <br /> #2 150 33 <br /> #3 150 33 <br /> #4 200 33 <br /> Avg. 238 33 <br /> SWS4 #1 100 25 <br /> SWSS #1 100 0.5 <br /> SWS6 #1 300 20 <br />SWS7 N/A <br /> <br />D-38 <br />