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Percent of <br />Month Annual <br />Aggregate <br />Production <br />Amount of <br />Aggregate <br />Production <br />Water Lost <br />With Mined <br />Aggregate <br />Percent of <br />Annual <br />& Concrete <br />Production <br />Amount of <br />Concrete <br />Production <br />Water Used <br />in Concrete <br />Batching <br />Water Used <br />for Dust <br />Control <br />Total <br />Evaporative <br />& Operational <br />Losses <br />(tons) <br />(acre -feet) <br />(cubic yards) <br />(acre -feet) <br />(acre -feet) <br />(are-feet) <br />[ <br />[ <br />[ <br />[10] <br />[11] <br />[12] <br />(13] <br />[14] <br />January <br />0 0% <br />0 <br />000 <br />0 0% <br />0 <br />000 <br />000 <br />056 <br />February <br />0 0% <br />0 <br />0 00 <br />0 0% <br />0 <br />0 00 <br />0 00 <br />0 68 <br />March <br />0 0% <br />0 <br />0 00 <br />5 5% <br />550 <br />0 07 <br />0 37 <br />1 33 <br />April <br />10 4% <br />0 <br />000 <br />9 0% <br />900 <br />011 <br />037 <br />201 <br />May <br />14 4% <br />0 <br />0 00 <br />13 0% <br />1,300 <br />016 <br />0 37 <br />2 43 <br />June <br />179% <br />0 <br />000 <br />165% <br />1,650 <br />020 <br />037 <br />339 <br />July <br />194% <br />0 <br />000 <br />1805' <br />1,800 <br />022 <br />037 <br />374 <br />August <br />164% <br />0 <br />000 <br />150% <br />1,500 <br />018 <br />037 <br />330 <br />September <br />124% <br />0 <br />000 <br />110% <br />1,100 <br />014 <br />037 <br />242 <br />October <br />9 4% <br />0 <br />0 00 <br />8.0% <br />800 <br />010 <br />0 37 <br />1 82 <br />November <br />0 0% <br />0 <br />0 00 <br />4 0% <br />400 <br />0 05 <br />0 37 <br />1 12 <br />December <br />0 0% <br />0 <br />0 00 <br />0 0% <br />0 <br />0 00 <br />0 00 <br />0 54 <br />Total <br />100.0% <br />0 <br />0.00 <br />100.0% <br />10,000 <br />1.23 <br />3.33 <br />23.34 <br />Table 1 <br />Bernhardt Pit <br />Evaporative and Operational Losses <br />Month <br />Percent of Gross Average Effective Net Net Water Surface <br />Annual Evaporation Precipitation Precipitation Evaporation Evaporation for <br />Evaporation 6.52 <br />(inches) <br />(inches) (inches) (inches) (acre -feet) <br />January <br />February <br />March <br />April <br />May <br />June <br />July <br />August <br />September <br />October <br />November <br />December <br />Total <br />[ [ ( [ [ [ <br />3 0% <br />3 5% <br />5 5% <br />9 0% <br />12 0% <br />14 5% <br />150% <br />13 5% <br />10 0% <br />7 0% <br />4 0% <br />30% <br />1 32 <br />1 53 <br />241 <br />3 95 <br />5 26 <br />6 36 <br />6 58 <br />5 92 <br />4 39 <br />3 07 <br />1 75 <br />1 32 <br />0 40 <br />0 39 <br />110 <br />1 60 <br />251 <br />1 68 <br />1 11 <br />1 24 <br />1 24 <br />0 85 <br />0 68 <br />0 47 <br />0 28 <br />0 28 <br />0 77 <br />1 12 <br />1 76 <br />1 18 <br />0 77 <br />0 87 <br />0 87 <br />0 59 <br />0 47 <br />0 33 <br />1 03 <br />1 26 <br />1 65 <br />2 82 <br />3 50 <br />518 <br />5 80 <br />5 05 <br />351 <br />2 48 <br />1 28 <br />0 99 <br />0 56 <br />0 68 <br />0 89 <br />1 53 <br />1 90 <br />2 82 <br />315 <br />2 75 <br />1 91 <br />1 35 <br />0 70 <br />0 54 <br />100.0% <br />43.86 <br />13.27 <br />9.29 <br />34.57 <br />18.78 <br />Notes <br />[1] From SB 120, the evaporation percentages are for gravel pits with elevations below 6,500 feet <br />[2] Equals Percent of Annual Evaporation times 29 05 inches <br />[3] From Colorado State University's Colorado Climate Center web page, htip I /ccc atmos colostate edu for Longmont Weather Station <br />[4] Equals Column (3) bores 70 percent 70 percent value was taken from SB 120 <br />(5) Equals Column (2) minus Column (4) If the resultant value is less than zero then a zero is substituted <br />[6] Equals Column (5) divided by 12 times 11 11 acres Includes Pond 1(4 97 ac), Pond 2 (5 43 ac), Processing pond (0 40 ac( and dewatering trench (0 31 ac( <br />[7] Based on mformahon from Hall -Irwin <br />[8] Equals Column (7) times 400,000 tons per year Production based on information from Hail -Irwin This is production from the 22 acres mining operation <br />[9] Equals Column (2) times 2000 times 416 drnded by 62 4 divided by 43,560 <br />[10] Based on information from Hall -tram <br />[11] Equals Column (10) bores 100,000 cr per year Production based on information from Hall -Irwin <br />[12] Equals Column (11) times 40 gallons divded by 325851 Assume a use of 40 gallons per cubic yard of concrete production <br />[131 Equals 6000 gallons per day times number of operating days (20 days) in the month divided by 325851, dung production months (March thru November) <br />[14] Equals Column (6) plus Column (9) <br />BERN_SWSP2012 xis <br />Civil Resources, LLC, 12/6/2011 <br />