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Mineral Joe Mine - Drainage Design Plan 30 <br />Table 16. Sub -Basin Areas, Receiving Reach, Weighted Average Curve Number, and Time <br />of Concentration in TR55 Model <br />Name Description Reach Area(ac) RCN Tc <br />N -A <br />Main <br />drainage above UDS <br />UDS <br />52.4 <br />73 <br />0.163 <br />N- B +C +tri <br />Triangle above west UDS <br />UDS <br />1.95 <br />73 <br />0.110 <br />N -D +tri <br />Area <br />below UDS reporting <br />MDS <br />0.99 <br />73 <br />0.1 <br />N -E <br />Area <br />below UDS reporting <br />LDS -E <br />1.39 <br />74 <br />0.1 <br />N -F <br />Road <br />CL to LDS -north <br />LDS -N <br />1.90 <br />75 <br />0.1 <br />N -H <br />Road <br />to culvert on switch <br />NJR <br />0.35 <br />76 <br />0.1 <br />N -I <br />Road <br />to NJ via culvert <br />SWRP -In2 <br />0.68 <br />74 <br />0.1 <br />N -J <br />Road <br />& slope above SWRP <br />SWRP -In2 <br />0.81 <br />81 <br />0.123 <br />MFA <br />Mine <br />Facilities to SWRP <br />SWRP -Inlet <br />3.01 <br />85 <br />0.229 <br />Total area: 63.48 (ac) <br />Notes: Calculated Tc values of <0.1 hr were converted to 0.1 hr in WinTR55 <br />N -H <br />Road CL to culvert <br />INJRI <br />NJR \ _ SWRP <br />���JJJ / <br />I n 1 Stor water Retent <br />SWRP -In1 <br />N -I <br />[1 2 <br />Road CL to NJ <br />SW - Inlet2 <br />N -J <br />Road /slope u/s SWRP <br />LDS -N <br />S -N <br />N -F <br />to LDS -N <br />Mine Facilities Area (Yard) <br />Figure 15. Schematic of Stormwater Routing to the Planned SWRP <br />4148B.131029 Whetstone Associates <br />