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Pit <br />ration losses <br />1 <br />Total Exposed Water Surface Area'I 1.S2 acres <br />W8a=wJ WeiwC.- s&ki% (1C <br />JanuaFebrua March April May <br />June <br />Jul <br />August Se teml <br />Distribution of Annual Evaporation) <br />0.030 0.035 0.055 20 <br />0.090 0.1145 <br />0. <br />0.150 <br />0.135 0.100 <br />Net Free Water Surface Evaporation (feet)3 <br />0.0138 0.102 0.160 0.263 0.350 <br />0.423 <br />0.438 <br />0.394 0.292 <br />Net Evaporation at Loloff Pit (ac -ft) <br />0.133 0.155 0.244 0.399 0.532 <br />0.643 <br />0.665 <br />0.599 0.443 <br />VYR��d1w�CLLC <br />Notes: <br />1 See Map 2 for the delineation of the de -watering pond exposed water surface area. <br />2 Distribution of annual evaporation per DWR Guidelines for gravel pits at elevations below 6,500 feet. <br />3 Annual gross evaporation rate of 45 inches taken from NOAA Technical Report NWS 33. <br />Consistent with previously approved Loloff SWSP, a credit of 9.97 inches of effective precipitation results in approximately 35 inches net evapoi <br />W8a=wJ WeiwC.- s&ki% (1C <br />Submitted by: <br />Paul Weiss, P.E. <br />5255 Ronald Reagan Boulevard, Suite 220 <br />Johnstown, CO 80534 <br />October November December <br />TOTAL <br />0.070 0.040 0.030 <br />LODD <br />0.204 0.117 0.088 <br />2.917 <br />0.310 0.177 0.133 <br />4.433 <br />Loloff Pit <br />Production Losses <br />VYR��d1w�CLLC <br />Table 2 <br />Submitted by: <br />Paul Weiss, P.E. <br />525S Ronaid Reagan Boulevard, Suite 220 <br />Johnstown, CO 80534 <br />January <br />February <br />March <br />April <br />May <br />June <br />July <br />August <br />Septembei <br />October Novembee Decembed <br />TOTAL <br />Monthly Production (tons) <br />24,000 <br />24,000 <br />24,000 <br />36,000 <br />60,000 <br />60,000 <br />64,000 <br />64,000 <br />60,000 <br />36,000 24,000 24,000 <br />500,000 <br />Water Retained in Product (ac-ft)1 <br />0.35 <br />0.35 <br />0.35 <br />0.53 <br />0.88 <br />0.88 <br />0.94 <br />0.94 <br />0.88 <br />0.53 0.3S 0.35 <br />7.36 <br />Water used for Dust Control (ac -ft) <br />0.20 <br />0.20 <br />0.40 <br />0.40 <br />0.40 <br />0.40 <br />0.50 <br />0.50 <br />0.40 <br />0.30 0.20 0.20 <br />4.10 <br />Total Production Losses (ac -ft) <br />0.55 <br />0.55 <br />0.75 <br />0.93 <br />L28 <br />1.28 <br />1.44 <br />1.44 <br />1.28 <br />0.83 0.55 O.S5 <br />11.46 <br />Notes: <br />1 Material mined below the ground water table, but in a dewatered state. Material has 2% moisture content. <br />WWC Water Kesource F ng'incering <br />