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Ms. Michelle Austin G.L. Pit Substitute Water Supply Plan (DRMS# M-81-022) October 20, 2006 Page 2 coordination with the Poudre River water commissioner. The amount of replacement water leased from the Tri-Districts also includes a 7.8 percent transit loss from the Sand Creek Ditch. The transbasin Sand Creek Ditch water is transported over Boulder Ridge in the Wilson Ditch and stored in the Eaton Reservoir. Release made from Eaton Reservoir travel approximately 50 miles to the mouth of the Poudre Canyon. 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. This plan is approved with the effective date of November 1, 2006 and shall be valid through October 31, 2007 unless otherwise revoked or modified. If the groundwater pond has not been completely backfilled and lagged depletions to the stream system have not ceased by the plan's expiration date, a renewal request must be submitted to this office with the statutory fee (currently $257) no later than September 15, 2007. 2. A well permit no.42334-F was obtained forthe current use and exposed pond surface area of the gravel pit, in accordance with §37-90-137(2) and (11), C.R.S. 3. The total surface area of the groundwater exposed after December 31, 1980 must not exceed 6.4 acres resulting in 9.7 acre-feet of evaporative loss. Total annual amountfor post pumping depletions shall not exceed 0.1 acre-feet from the backfilled area. Should the total consumption at the pit exceed this amount, an amendment will need to be filed with this office. 4. Approval of this plan is for the purpose as stated herein. Any additional uses for which the water may be used must first be approved by this office. 5. All releases of replacement water must be sufficient to cover all out-of-priority depletions in time, place, and amount and must be made under the direction and/or the approval of the water commissioner. The release of replacement water may be aggregated to maximize beneficial use. The water commissionerand/orthe division engineershall determine the rate and timing of an aggregated release. 6. The replacement water that is the subject of this plan cannot be sold or leased to any other entity. As a condition of subsequent renewals of this substitute water supply plan, the replacement water must be appurtenant to this site until the groundwater pond has been completely backfilled and the lagged depletions to the stream system have ceased. A copy of this approval letter should be recorded with the county clerk and recorder. All replacement water must be concurrent with depletions in quantity, timing and locations. 7. The name, address, and phone number of the contact person who will be responsible for the operation and accounting of this plan must be provided on the accounting forms submitted to the division engineer and the water commissioner. 8. Adequate accounting of depletions and replacement must be provided to the division engineer in Greeley and the water commissioner on a monthly basis or other interval acceptable to both of them. The accounting form provided with your application is subject to modification and approval by the division engineer. All amounts shall be in acre-feet.