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APPENDIX F <br />Lafarge West, Inc. <br />Middle Poudre Combined SWSP WY 2010 <br />Dewatering Credit from Three Bells Pit <br />Applegate <br />Group,inc. <br /> <br />Month Estimated <br />Days per Month, I <br />for Dewatering <br />(acre-feet) Three Bells Pit <br />Dewatering <br />Discharge <br />(acre feet); Lagged D;epletidns <br />from 'Dewatering - <br />at Three Bells'Pit ' <br />"(acre feet) .; Dewatering <br />Credit ; <br />at Three`Belis Pit ' <br />(acre,-feet) <br />Nov-09 30 159.10 160.48 -1.38 <br />Dec-09 31 164.41 162.33 2.07 <br />Jan-10 31 164.41 163.36 1.04 <br />Feb-10 29 153.80 157.93 -4.13 <br />Mar-10 31 164.41 161.31 3.10 <br />Apr-10 30 159.10 160.38 -1.28 <br />May-10 31 164.41 162.35 2.06 <br />Jun-10 30 159.10 160.58 -1.48 <br />Jul-10 31 164.41 162.45 1.96 <br />Aug-10 31 164.41 163.48 0.93 <br />Sep-10 30 159.10 160.87 -1.76 <br />Oct-10 31 164.41 162.60 1.80 <br />Total . " 366:00 4 lj9 1 5 1,9 iB.1 2.93 ` <br />Estimated Dewatering Rate = 1200 gpm <br />(A) Estimated number of days per month to keep the site dewatered <br />(B) Accretion at the Three Bells Pit based on dewatering rate of 1200 gpm <br />(C) Lagged dewatering depletions at Three Bells Pit from Stream Depletion Model <br />(D) Excess dewatering credit