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Table 1 <br />Pueblo West Pit <br />Projected Depletion Analysis (February 2002 -January 2003) <br />Values in Acre-Feet Unless <br />Feb 73.3 0.15 L0.70 0.02 1.03. 0.0% 0.00 1.03 9.67 1.86 1.96 0.79 4.61 14.28 <br />Mar 73.3 0.23 16.81 0.04 1.62 2.9% 4.36 5,98 10.83 1.86 1.96 0.79 4.61 15.44 <br />Apr 73.3 038 27.51 0.06 2.65 6.5% 9.78 12.43 15.08 1.86 0.79 2.65 17.73 <br />May 73.3 0.50 36.67 0.08 3.53 12.6% 18.96 22.49 14.19 1.86 0.79 2.65 16.84 <br />Jun 73.3 0.60 44.31 0.09 4.26 19.0% 28.59 32.85 11.46 0.00 11.46 <br />Jvl 73.3 0,63 45.84 0.10 4.41 22.6% 34.01 38.42 7.42 0.00 7.42 <br />Aug 73.3 0.56 41.26 0.09 3.97 18.7% 28.14 32.11 9.15 ~ 0.00 9.15 <br />Sep 73.3 0.42 30.56 0.06 2.94 - 11.6% 17.46 20.40 10.17 ~ 0.00 10.17 <br />Oc[ 73.3 0.29 21.39 0.04 2.06 6.1% 9.18 11.24 10.16 0.00 10.16 <br />Nov 73.3 O.17 12.22 0.03 1:18 0.0% 0.00 1.18 11.05 0.00 11.05 <br />Dec 73.3 0.13 9.17 0.02 0.88 0.0% 0.00 0.88 8.29 0.00 8.29 <br />1. Based upon a total surface area of 102.8 acres reduced by 29.5 acres exposed prior to 1981 (grandfathered), see attached map for pond areas. <br /> The 102.8 acres are based upon September 23, 1997 and Fall 1999 surveys completed by Mangini and Associates, Inc. <br />2. Gross Evaporation Rate equals 4.17 feet per year, based upon NOAH Evnpomtion Atlas. Monthly distribution based upon SB-12D Guidelines, consistent with the July 1990 SWSP , ravised May 1994. <br />2a. Gross Evaporation equals (1) x (2). <br />3. Effective Precipitation Rah equals 70% of total precipitatioq based upon Pueblo WSO AP weather station. <br />4. Effective Precipitation Credit equals (3) x 45.93 ,based upon 45.93 acres of non-imgated and non-phreatophyte area. <br />5. Barad upon original SWSP dated July 1990, revised May 1994, Table 8, <br />6. Equals 150.48 ac-ft multiplied by monthly percents in column (S). See Table 2 for calculation of 150:48 aaft phreatophyte credit. <br />7. Total natural vegetation credit equals (4)+ (6). <br />8. Equals (2a) - (7). ~ - <br />9. Depletions due to Ready Mix production same as last year. Usage is metered at Well 513 ] 6-F. Monthly rate is assumed constant; however, actual monthly rate may vary as long <br /> as annual amount is not exceeded. Transit Mix plans to discontinue hatching at the West Site by the end of May. . <br />] 0 . Anauel production limited to 133,000 tons. Monthly rate is assumed constant; however, actual monthly rate may <br /> vary as long as annual amount is not exceeded. Tranisit Mix plans to diccontnue mining by the end of March. <br />11 . Depletions due to gvcA washing projected to be equal or less than last year. Usage is metered at wells 15980-F, 51609-F, 51317-F. <br /> Monthly rate is assumed constanT, however, actual monthly rate may vary as long as the annual amount is noC exceeded. <br />12 . Total Plant Depletion equals sum of (9), (10), aad (11). <br />13 , Total Depletion equals (8)+ (12). <br /> L <br /> ND Z ~. <br /> nm f7l <br />^m~ ® n <br /> g <br />N ~ m <br /> o~y[p <br />TS' Q <br /> S~ N ~~ <br /> l/ <br />