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Mr. Richard Raines Page 2 North Taft Hill Expansion Site M01-051 June 17,2004 A lease of fully consumable water from the Tri-Districts for water to be released from Chambers Lake will be the source of replacement during the months when no credit to the river is available. A lease of 6 acre-feet from the Tri-Districts was obtained to make replacements at the Overland Pond site during the 2004, however since no releases have been made for the Overland Ponds site, Lafarge is proposing to use this lease for the North Taft Hill Expansion site. A copy of the Tri-Districts lease was provided with the proposed plan. The existing lease is valid until October 31, 2004. The Tri-Districts lease must be renewed for the year 2005 and a copy must be provided to this office. According to the information provided, beginning February2005, Lafarge West, Inc. will stop dewatering the North Taft Hilt Expansion site. As a result of ceasing the dewatering operation, approximately 13 acres of groundwater will be exposed at the site. Lafarge West, Inc. will continue to make replacement from evaporation from the unlined 13-acre lake until the mining operation will begin again in the future. In addition the proposed plan indicates that Lafarge will replace all post pumping depletions that occurred due to ceasing the dewatering operation, under a new combined substitute water supply plan to be requested by Lafarge West, Inc. that will coverthe North Taft Hill Expansion site, the Home Office Pit site and the Overland Ponds site. The net accretion credits that will be available from the dewatering operation at the Overland Ponds site once the mining operation begins will be applied for the combined plan. The monthly depletions and replacement requirements are found on the attached Table I. 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 through January 31, 2005. 2. If this plan will not be made absolute by a water court action by the plan's expiration date, a renewal request must be submitted to this office with the statutoryfee (currently $217) no later than December 15, 2004. Ifthe site will be covered undera new combined plan then a request for a new combined plan must be submitted to this office with the statutoryfee foreach site no later than November 1, 2004. 3. A well permit must be obtained for the gravel pit in accordance with §37-90-137(2) and (11), C.R.S. in conjunction with this plan. A well permit application was submitted to this office under receipt no. 524322, and this application is pending evaluation. The provisions of Colorado Revised Statute 37-90-137(2) prohibits the issuance of a permit for a well to be located within 600 feet of any existing well, unless the State Engineer finds that circumstances so warrant after a hearing held in accordance with the procedural rules in 2CCR402-5. This hearing may be waived if you are able to obtain statements from the owners of all wells within 600 feet, verifying that they have no objection to your use of the proposed well. Should a new well permit be denied for reasons of 600 foot spacing, or any other legitimate reason, approval of this substitute supply plan will be cancelled. 4. The total surface area of the groundwater exposed at the North Taft Hill Expansion site after December 31, 1980, under the terms of this substitute water supply plan must not exceed 0.5 acres resulting in 0.97 acre-feet of evaporative loss.