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Thomas E. Brubaker <br />From: Luke Hams [Iharris@bbawater.com] <br />Sent: Thursday, April 21, 2011 5:42 PM <br />To: Thomas E. Brubaker <br />Cc: Jeff Clark <br />Subject: RE: Valco <br />Attachments: Canon City Balance.pdf, Rocky Ford Balance.pdf <br />Tom, <br />We have reviewed Valco's monthly water supplies and demands for the Canon City and Rocky Ford <br />pits based on the post reclamation water surface areas. Attached please find two tables <br />showing depletions, replacement supply and balance of surplus supply and remaining depletion <br />for the pits on a monthly basis. The following bullets summarize the tables. <br />* The Canon City East Pit has approximately 13.75 acre -feet of surplus water supply <br />during the summer months and approximately 5.94 acre -feet of remaining depletion during the <br />winter months for a net surplus of approximately 7.81 acre -feet for the year. The CC &OC <br />Ditch HCU credit is based on the WRC Engineering, Inc. analysis for 25 shares and was not <br />updated to account for Valco's additional share. In the future the HCU analysis may need to <br />be updated to account for Valco's full 26 shares of ownership in the CC&OC Ditch. Including <br />the additional share will most likely increase surplus replacement supply during the summer <br />months and won't affect remaining depletions during the winter months. <br />* The Rocky Ford East Pit has approximately 13.88 acre -feet of surplus water supply <br />during the summer months and approximately 16.37 acre -feet of remaining depletion during the <br />winter months for a net remaining depletion of approximately 2.49 acre -feet for the year. <br />Please let us know if you have any questions or need additional information. <br />Cheers, <br />Luke W. Harris <br />Water Resource Engineer <br />lharrisObbawater.com <br />Bishop- Br Associates, Inc.<http: / /www.bbawater.com /> <br />phone: 303.806.8952 <br />fcid: image001.ipg(01CBFF76.7FEDB6201 <http: / /www.bbawater.com/> <br />From: Thomas E. Brubaker [ mailto :tom.brubakerOvalco- inc.coml <br />Sent: Wednesday, April 20, 2011 3 :35 PM <br />To; Jeff Clark; Luke Harris <br />Subject: <br />Jeff and Luke, <br />Have you completed the calculations on each pit as to what our ultimate water needs will be <br />based on the new final surface forecasts? <br />Tom Brubaker <br />1 <br />