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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />Storm Water Runoff Estimate Results <br />Runoff was estimated for the Interstate corridor, and the following mining azeas <br />1. West end <br />2. Dry Creek <br />3. Slough to East Property Line <br />4. West Property Line to Horse Fence <br />5. Surface Facility Area - No Pit <br />The estimated runoff for the I-70 corridor contributing storm wate r flow to the Dry Creek mining <br />area by subarea for the ] 0, 25 and 100 year events using the Rational Method is: <br /> Area Existing Condition Runoff, cfs <br />Subarea Description Acres 10 yr-24hr 25 yr-24hr 100 yr-24hr <br />1 N. Frontage Rd. to S. 2.37 1.52 1.86 2.13 <br /> Property Line <br />2 [-70 N. Lane to Frontage 2.78 2.75 3.37 3.87 <br /> Rd. <br />3 I-70 Median Dry Creek to 2.03 1.20 1.00 1.69 <br /> lstlnlet <br />4 1-70 S. Lane to S. 8.84 7.66 9.49 10.91 <br /> Frontage Rd. <br />5 1-70 Median Between 1.81 1.92 2.42 2.78 <br /> Inlets w/ N. I-70 Lane <br />6 Edge I-70 N. Lane to N. 1.20 1.00 1.27 1.45 <br /> Frontage Rd. <br />7 I-70 S. Lane to S. 3.87 4.15 5.12 5.88 <br /> Frontage Rd. <br />8 I-70 N. Lane and Median 3.95 3.74 4.62 5.31 <br />9 I-70 edge N. Lane to N. 5.38 4.51 5.73 6.58 <br /> Frontage Rd. <br />10 N. Frontage Rd to S. 1.45 1.53 1.99 2.28 <br /> Property Line <br />Total 33.68 29.98 36.87 40.60 <br />