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EXHIBIT 19 (22) <br />NEW ELK MINE <br />PROTECTION OF THE HYDROLOGIC BALANCE <br />WEST DWDA <br />STORM EVENTS <br />10 YEAR 24 HOUR EVENT 3.0 INCHES <br />25 YEAR 24 HOUR EVENT 3.4 INCHES <br />100 YEAR 24 HOUR EVENT 4.2 INCHES <br />The information presented for peak Flow calculations Is developed with the use of <br />SEDCAD. The output from SEDCAD follows. <br />Disturbed <br />Table 2 -2d -Runoff curve numbers for and and semiarid rangelands. <br />Cover Type - Desert Shrub - Herbaceous mix of grass and weeds <br />Hydrologic Condition Poor <br />Soil Type - Sandy Loam C <br />Curve Number 87 <br />Disturbed <br />Table 2 -2d -Runoff curve numbers for and and semiarid rangelands. <br />Cover Type - Desert Shrub - Herbaceous mix of grass and weeds <br />Hydrologic Condition Fair <br />Soil Type - Sandy Loam C <br />Curve Number 81 <br />Ponderosa Pine-Douglas Fir -Oak (PDO) <br />Table 2 -2c -Runoff curve numbers for other agricultural lands <br />Cover Type - Pinon Juniper <br />Hydrologic Condition Good <br />Soil Type - Dargol Fuera Vamer D <br />Curve Number 71 <br />Coal Mine Waste (DWDA) <br />Table 2- 2c- Runoff curve numbers for other agricultural lands <br />Cover Type - Desert Shrub - Herbaceous mix of grass and weeds <br />Hydrologic Condition Poor <br />Sail Type - Disturbed Area C <br />Curve Number 90 <br />TR -65 EXH 19(22) -2 04/17/2012 <br />