2009-04-03_HYDROLOGY - M2003091 - Laserfiche WebLink

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Richard Raines and Sira Sartori April 2, 2009 Page 3 Heaton Reservoir that can be released for augmentation purposes under this SWSP. The monthly schedule of water releases from Heaton Reservoir to replace depletions from mining Duckworth Pit for the proposed plan period is presented in Table 3. Conditions of Approval I hereby approve the substitute water supply plan in accordance with Section 37-90- 137(11), C.R.S., subject to the following conditions: 1. This plan is approved with an effective date of October 1, 2008 through January 31, 2010. If this plan will not be made absolute through a water court action by the plan's expiration date, a renewal request must be submitted to this office with the statutory fee by December 1, 2009. 2. A new well permit must be obtained for the gravel pit in accordance with Section §37-90- 137(2) and (11), C.R.S. before mining operations may commence. Until a gravel pit well permit is approved, exposure of groundwater and other associated consumptive use are prohibited. Should a new well permit be denied for any reason, approval of this substitute supply plan will be cancelled. 3. The total surface area of the ground water exposed at the Duckworth Pit, the maximum annual evaporative loss, the water used for dust control, and the water removed in mined product shall not exceed those amounts presented in this plan. Should the total water surface area at the pit or the amounts of water used for dust suppression or lost with mined product exceed these amounts prior to the expiration date of this plan, an amendment will need to be filed with this office. 4. The dewatering rate and quantity presented in this plan are estimated. The Applicant must meter all water dewatered from the pit and all water used for dust control. As meter records become available the Applicant shall update the data used to compute monthly lagged depletions and replacements from dewatering. If at any time the projected stream depletions show the Applicant is unable to replace all out-of-priority stream depletions, the Applicant shall notify the Division Engineer and Water Commissioner of the projected shortfall and describe how consumptive use at the site will be reduced and/or replacements will be increased to ensure all out-of-priority depletions will be replaced. 5. All water dewatered from the site must be discharged directly to Idaho Creek unless otherwise approved by the Water Commissioner. 6. Approval of this plan is for the purposes as stated herein. Any additional uses of this water must first be approved by this office. 7. The Water Commissioner responsible for the administration of this plan is Mr. Bob Carlson, P.O. Box 380, Erie, CO 80516, phone no. (303) 438-9303. Releases from Heaton Reservoir will be coordinated with Water Commissioner Shera Sumerford, 141725 th Avenue, Greeley, CO 80634, phone no. (970) 352-5558. The applicant shall maintain daily records of all diversions, replacements, and the amount of water used for each particular purpose. The applicant shall provide a report of these records to the division engineer and the water commissioner on a monthly basis on a form approved