2008-05-14_HYDROLOGY - M1996052 - Laserfiche WebLink

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Mr. Jeffery A. Clark Page 2 May 14, 2008 Del Camino Pit has 11 acre-feet of out-of-priority replacement requirements. As directed by the water commissioner this requirement was replaced in March 2008 by an aggregate release of 12.49 acre-feet from Erger's Pit, which accounted for 13.5% transit loss from Bromley Lakes site to the confluence of the Saint Vrain and South Platte River (0.5% per mile for over 27 miles). Also releases will be made from Erger's Pit in order to replace out-of-priority depletions for March and April 2008. Replacements during the historical irrigation season will be provided by 0.1 shares of the Last Chance Ditch, which yields 9.17 acre-feet of consumptive use credits. Approximately 33.64 acres of historically irrigated area has been dried-up. The area of the dry-up is located in a portion of the SW1/4 of the NW1/4 and the NW1/4 of the SW1/4 of Section 32, Township 3 North, Range 67 West of the 6th P.M. as shown on the attached Figure 1. The remaining 1.4 shares of the Last Chance Ditch will continue to be used for irrigation. The lease from the Saint Vrain will provide a total of 15.26 acre-feet. A copy of the Saint Vrain lease was submitted to the State Engineer's Office on April 28, 2008 and is attached to this letter. Of the 15.26 acre-feet of lease water, approximately 1.44 acre-feet will cover transit losses (9.5% total based on 0.5% per mile for the 19 miles from the Saint Vrain to the Del Camino Pit). The amount of Saint Vrain replacement water that reaches the Del Camino Pit is 13.82 acre-feet. 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 substitute water supply plan shall be valid for the period of March 1, 2008 through February 28, 2009, unless otherwise revoked, modified, or superseded by decree. If this plan will not be made absolute by a water court action by the plan's expiration date, a renewal request must be submitted to this office with the statutory fee (currently $257) no later than January 15, 2009. 2. A well permit must be obtained for the current use and exposed pond surface area of the gravel pit, in accordance with §37-90-137(2) and (11), C.R.S. Any application will be evaluated subsequent to approval of this plan. The provisions of §37-90-137(2) C.R.S. prohibits the issuance of a permit for a well to be located within 600 feet of any existing well, unless the State Engineer finds that circumstances so warrant after a hearing held in accordance with the procedural rules in 2CCR402-5. This hearing may be waived if you are able to obtain statements from the owners of all well within 600 feet, verifying that they have no objection to your use of the proposed well. Should a new well permit be denied for reasons of 600 foot spacing, or any other legitimate reason, approval of this substitute supply plan will be cancelled. 3. The total surface area of the groundwater exposed at the Del Camino Pit after December 31, 1980 must not exceed 7.54 acres resulting in 19.24 acre-feet of evaporative loss. 4. Total consumption at the pit(s) must not exceed these aforementioned amounts unless an amendment is made to this plan. 5. Approval of this plan is for the purposes as stated herein. Any additional uses for which the water may be used must first be approved by this ofi'tce. Any future additional historic consumptive use credit given (e.g. agricultural water transfer) for this site must consider all previous credits given.