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Mr. Richard Raines April 25, 2005 Page 2 Well permit no. 53502-F was obtained for the current use and exposed pond surface area of the Kyger Pit in accordance with §37-90-137(2) and (11), C.R.S. Well permit no. 54295-F was obtained for the current use and exposed pond surface area of the Three Bells Pit in accordance with §37-90-137(2) and (11), C.R.S. Well permit no. 60890-F was obtained for the current use and exposed pond surface area of the Port of Entry Pit in accordance with §37-90- 137(2) and (11), C.R.S. It should be noted that the only consumptive use at the Three Bells Pit and the Port of Entry Pit is the evaporation of exposed ground water. The Three Bells Pit is a mining reserve and the Port of Entry Pit is currently in reclamation. Lafarge West, Inc. filed for a plan for augmentation for the Port of Entry Pit site in case no. 2004CW111. The Kyger Pit is the only active mining site and will continue to include evaporation, water retained in the product and dust control. The mining operation at the Kyger Pit has continuously dewatered directly back to the Cache la Poudre River since 2000. The estimated dewatering rate at the Kyger Pit site is approximately 1,200 gallons per minute. The source of replacement water for this combined plan will be from 5.0 Box Elder Ditch shares. Lafarge owns 8.5 shares in the Box Elder Ditch and will use 5.0 shares in this combined plan. The shares will be diverted into a recharge pit that was recently constructed on the un-mined portion of the Three Bells Pit site. The recharge pit was excavated to only the upper portion of the gravel deposit and will not expose additional ground water, thus no additional evaporative loss will occur. Water will be diverted to the recharge pit through an existing lateral from the ditch. Lafarge presently owns 5.5 shares of the 6.0 shares historically utilized for the irrigation of the Three Bells property (344.3 acres). The historic consumptive use credit of the 5.0 Box Elder Ditch shares was determined to be 255.9 acre-feet. This is based on an historic consumptive use analysis that was completed in support of an augmentation plan in case no. 2002CW205. The 5,0 shares will be diverted into the recharge pit each irrigation season. The return flow obligations from the Box Elder Ditch will be maintained by the recharge plan. Leases from the City of Greeley and The Lake Canal and Reservoir Company will make replacements for depletions not covered by the recharge program. A lease of 15.3 acre-feet of fully consumable water from the City of Greeley will make replacements from November 2004 through March 2005. The point of replacement will be the Greeley Waste Water Treatment Plant. A copy of the City of Greeley lease was provided to this office with the renewal request. A lease of 96.06 acre-feet of fully consumable water from The Lake Canal Reservoir Company will make replacements from November 2004 through June 2005. A copy of the Lake Canal Reservoir Company lease was submitted to this office on April 11, 2005. The source of the replacement water will be from Gray Lakes, which can deliver water to Box Elder Creek and from there to the Cache La Poudre River. Approximately 2.18 acre-feet of water from the Gray Lakes will cover transit losses. A monthly breakdown of the real time stream depletions from the mining operation as well as the real time replacements made by lagged timing of the historic consumptive use credit is shown in the attached Table 1. I hereby approve the proposed substitute water supply plan in accordance with §37-90- 137(11), C.R.S. subject to the following conditions: 1. Unless otherwise revoked or modified this plan shall be valid for the period of November 1, 2004 through October 31, 2005. If this plan will not be made absolute by a water court