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Mr. Richard Raines April 25, 2005 Page 4 engineer and the state engineer as part of the documentation process. Credit from any dry-up fields containing alfalfa that have been irrigated within the last three years will be assessed in the following manner: (a) For fields deep tilled or chemically treated to kill alfalfa, 100% credit will be given for consumptive use as otherwise computed under the conditions of this approval. (b) For fields not deep tilled or chemically treated to kill alfalfa, records of monthly monitoring of depth to groundwater at existing irrigation wells or existing or new monitoring wells or piezometers within Ya-mile of each alfalfa field must be maintained. Credits will be reduced according to the following table when depth to groundwater is less than the depth assumed to provide no significant contribution to alfalfa growth. Measurements taken at the start of each month will determine the necessary reduction in credit to be applied during the following month. Depth to Ground Water (Feet) Percent Reduction in CU Credit 1 100% 2 90% 3 75% 4 50% 5 35% 6 20% 7 15% 8 10% 12. This substitute water supply plan may be revoked or modified at any time should it be determined that injury to other vested water rights has or will occur as a result of this plan. 13. Lafarge, West, Inc. filed for a plan for augmentation for the Port of Entry Pit site in case no. 2004CW 111. If reclamation of the mines at the Three Bells Pit and Kyger Pit sites produces a permanent water surface exposing groundwater to evaporation, an application for a plan for augmentation must be filed with the Division 1 Water Court at least three years prior to the completion of mining to include, but not be limited to, long-term evaporation losses. If a lined pond results after reclamation, replacement of lagged depletions shall continue until there is no longer an effect on stream flow. Granting of this plan does not imply a position by our office on any litigation associated with case 2004CW 111 or any other case. 14. The Kyger Pit has been continuously dewatered. Dewatering at this site will produce delayed depletions to the stream system. As long as the pit is continuously dewatered, the water returned to the stream system should be adequate to offset the depletions. However, once dewatering at the site ceases the delayed depletions must be addressed. A plan that specifies how the post pumping dewatering depletions (including refilling of the pit) will be replaced, in time, place and amount along with the evaporation from groundwater exposed at the sites after the dewatering stops was presented in the proposed plan.