2010-05-17_REVISION - M1996049 (7)

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Mr. Gary D. Witt July 30, 2009 Page 5 up must be submitted to the Water Commissioner, Division Engineer and the State Engineer as part of the documentation process. 21. The Applicant shall perform an inspection and provide verification for all parcels of dried up land used to generate augmentation credits during the term of this SWSP. The Water Commissioner shall be notified of the date of inspection and provided the opportunity to accompany the Applicant during this inspection. The final verification of dry up will be in the form of an affidavit signed by an individual having personal knowledge of the dry up for plan year's entire irrigation season for each parcel of land used in this SWSP. The applicant shall provide all affidavits to the division engineer by September 1, 2009 in order that the final determination of augmentation credits for the irrigation season can be made along with mapping showing any revisions to the dry up acreage. The applicant shall modify accounting to reflect that the credit from any dry-up fields containing alfalfa or native grass will be assessed in the following manner: (a) For fields deep tilled or chemically treated to successfully kill alfalfa or native grass, 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 successfully kill alfalfa, records of monthly monitoring of depth to groundwater at existing irrigation wells or existing or new monitoring wells or piezometers within %.-mile of each alfalfa or native grass 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. The Applicant may use another methodology upon review and approval by the State Engineer and Division Engineer. Depth to Ground Percent Reduction in CU Credit' Water (Feet) Native Grass Alfalfa 1 85% 100% 2 50% 90% 3 30% 75% 4 20% 50% 5 15% 35% 6 10% 20% 7 5% 15% 8 0% 10% 1. Adapted from EVAPOTRANSPIRATION AND AGRONOMIC RESPONSES IN FORMERLY IRRIGATED MOUNTAIN MEADOWS, South Park, Colorado, March 1, 1990; Revised September 1, 1991 22. The dry year analysis required by this office for a permanent plan for augmentation may vary from the analysis approved in this substitute water supply plan. Approval of this substitute water supply plan shall have no precedentiai or evidentiary force, does not constitute an admission or statement of position in any other proceeding, and shall not imply concurrence with any findings of fact or conclusions of law contained herein, or with the engineering methodologies used by the Applicant. 23. All releases of replacement water must be sufficient to cover all out of priority depletions and be made under the direction and/or approval of the Water Commissioner. The replacement may be aggregated to maximize beneficial use. The Water Commissioner and/or Division Engineer shall determine the rate and timing of an aggregated release.