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loloff Pit <br /> Evaporation Losses `1 Wants anci`14°i Const .11 I C <br /> Table 1 <br /> Submitted by: <br /> Paul Weiss,P.E. <br /> Total Exposed Water Surface Areal 1.52 acres 5255 Ronald Reagan Boulevard,Suite 220 <br /> Johnstown,CO 80534 <br /> January February March April May June July August September October November December TOTAL <br /> Distribution of Annual Evaporation2 0.030 0.035 0.055 0.090 0.120 0.145 0.150 0.135 0.100 0.070 0.040 0.030 1.000 <br /> Net Free Water Surface Evaporation(feet)3 0.088 0.102 0.160 0.263 0.350 0.423 0.438 0.394 0.292 0.204 0.117 0.088 2.917 <br /> Net Evaporation at Loloff Pit(ac-ft) 0.133 0.155 0.244 0.399 0.532 0.643 0.665 0.599 0.443 0.310 0.177 0.133 4.433 <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 evaporation. <br /> Loloff Pit <br /> Production Losses Ween ane l leis&Co:ate:a LLC. <br /> Table 2 <br /> Submitted by: <br /> Paul Weiss,P.E. <br /> 5255 Ronald Reagan Boulevard,Suite 220 <br /> Johnstown,CO 80534 <br /> January February March April May June July August September October November December TOTAL <br /> Monthly Production(tons) 24,000 24,000 24,000 36,000 60,000 60,000 64,000 64,000 60,000 36,000 24,000 24,000 500,000 <br /> Water Retained in Product(ac-ft)1 0.35 0.35 0.35 0.53 0.88 0.88 0.94 0.94 0.88 0.53 0.35 0.35 7.36 <br /> Water used for Dust Control(ac-ft) 0.20 0.20 0.40 0.40 0.40 0.40 0.50 0.50 0.40 0.30 0.20 0.20 4.10 <br /> Total Production Losses(ac-ft) 0.55 0.55 0.75 0.93 1.28 1.28 1.44 1.44 1.28 0.83 0.55 0.55 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 Resource Lngineerin� <br />