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Table 2 <br />Allen Mine • <br />Drainage Structures for Undisturbed Runoff <br />Undisturbed Areas South of Mine Site <br />10-Yr Pea}: <br />Dimensions ;Slope Length Man. Flow ;Flow Depth liel <br />Channel In-Flow Shape;Dep Top Botom~ 9~ Ft No. CFS CFS FT E'PS <br />Ditch 1A UD 1A Trap 2.0 12.0 0.0 6.6 1,595 0.04 110.6 90.1 1.8 ff.8 <br />Ditch 2A UD 2A Prab 2.0 10.0 3.5 840 0.04 105.1 14.4 0.8 i1.4 <br />CMP-2 D. 1A <br /> D. 2A Circ 4.0 3.7 270 0.024 149.7 104.6 2.5 12.9 <br />Ditch 1B UD 1B Trap 2.0 12.0 0.0 3.0 2,680 0.04 74.9 68.0 1.9 1i.1 <br />CMP-1 D.1B Circ 4.0 3.8 130 0.024 151.7 68.0 1.9 11.7 <br />Ditch 2B UD 2B Parb 1.0 15.0 8.5 375 0.04 A2.0 19.1 0.5 !i.3 <br />CMP-3 D.2B Circ 4.0 3.5 70 0.024 145.6 19.1 1.0 -_. <br /> ' <br />CMP-3A CMP3 Circ 4.0 3.1 72 0.024 137.0 19.0 1.0 t.7 <br />Ditch 2C UD 2C PRAB 2.0 15.0 7.5 730 0.04 239.0 64.5 1.1 8.1 <br />CMP-4 D.2C Circ 4.0 6.5 200 0.024 198.4 64.5 1.6 1~~.1 <br />Discharge to Purgatoire River <br />18 <br />L <br />