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Kirsten M. Kurath <br />Debeque Pit SWSP <br />August 6, 2007 <br />Page 3 <br />must continue to obtain approval for a substitute supply plan that replaces all out-of-priority <br />depletions associated with the exposed ground water surface until such water court approval <br />occurs. If a lined pond results after reclamation, replacement of lagged depletions shall continue <br />until there is no longer an effect on stream flow. <br />10. Diversions attributable to 5.11 shares in the Larkin Ditch Company used for replacement during <br />the irrigation season must continue to be diverted in-priority at the ditch then measured back to <br />the Colorado River in the vicinity of the Debeque Pit. Adequate measuring devices acceptable <br />to the Water Commissioner must be installed. <br />11. The 5.11 shares in the Larkin Ditch Company shall be committed to be used to cover <br />groundwater evaporation in the unforeseen event, or events, that would lead to the <br />abandonment of the pit. The 5.11 shares in the Larkin Ditch Company have an estimated 32.5 <br />acre-feet of historic net stream depletions. The maximum total mined area shall be limited to 6 <br />acres so that the historical consumptive use attributable to the 5.11 shares in the Larkin Ditch <br />Company would cover the annual evaporation from the pit, in the case of abandonment. <br />12. The amount and location of the dry-up of the irrigated acreage associated with the Applicant's <br />1.435 cfs of the Larkin Ditch and 0.7175 cfs of the First Enlargement of the Larkin Ditch must <br />be documented and approved by the Division Engineer and Water Commissioner before any <br />consumptive use credits are available for use under this plan. A map and legal description of <br />the dry-up must be submitted to the Water Commissioner, Division Engineer and the State <br />Engineer as part of the documentation process. <br />13. Applicant will inspect all parcels of dried up land used to generate augmentation credits during <br />the irrigation season to verify dry-up. The final verification of dry up will be in the form of an <br />affidavit signed by an individual having personal knowledge of the dry up for this year's entire <br />irrigation season for each parcel of land used in this SWSP. Ail affidavits must be provided to <br />the Division Engineer by November 15, 2007 in order that the final determination of <br />augmentation credits for the irrigation season can be made along with mapping showing any <br />revisions to the dry up acreage. Credit from any dry-up fields containing alfalfa or native <br />grass wilt be assessed in the following manner: <br />(a) For fields deep tilled or chemically treated to successfully kill alfalfa or native grass, <br />100% credit will be given for consumptive use as otherwise computed under the <br />conditions of this approval. <br />(b) For fields not deep tilled or chemically treated to successfully kill alfalfa, records of <br />monthly monitoring of depth to groundwater at existing irrigation wells or existing or <br />new monitoring wells or piezometers within'/.-mile of each alfalfa or native grass field <br />must be maintained. Credits will be reduced according to the following table when <br />depth to groundwater is less than the depth assumed to provide no significant <br />contribution to alfalfa growth. Measurements taken at the start of each month will <br />determine the necessary reduction in credit to be applied during the following month. <br />The Applicant may use another methodology upon review and approval by the State <br />Engineer and Division Engineer. <br />Depth to Ground Percent Reduction in CU Credit' <br />Water (Feet) <br />Native Grass <br />Alfalfa <br />1 85% 100% <br />2 50% 90% <br />3 30% 75% <br />4 20% 50% <br />