HYDRO22914 - Laserfiche WebLink

Home Browse Search

Mr. Donald E. Frick April 22, 2005 Page 3 Aggregate's South Platte combined replacement plan will also be applied. For this combined plan after the City of Westminster lease there will be a shortage of 6.65 acre-feet for May 2005 and 19.03 acre- feet for October 2005, that will be replaced using excess credits from Aggregate's operations on the Saint Vrain River and South Platte River, as identified above. As mentioned in the previous plan, during the 2004 irrigation season, dewatering at the F-Street Pit ceased. The timing of the lagged depletions from the dewatering operations was determined through a stream depletion model for the F Street Pit. The W.W. Farms Pit has been continuously dewatered since June 2003. The dewatering rate at the W.W. Farms Pit was 400 gallons per minute initially and increased to 750 gallons per minute in Apri! 2004. According to the information provided, mining will begin at the East 8"' Street Pit in June 2005. This site will be continuously dewatered at a rate of 750 gallons per minute. The timing of the lagged deletions from the dewatering operations was determined through a stream depletion model for the East 8 Street Pit. The model addresses the lagged depletions at the F Street, W.W. Farms and Loloff Pits by accounting for the net accretion credits at the river that occur due to the dewatering operation at the East 8"' Street Pit. These accretions are applied to this plan against depletions from the F Street, W. W. Farms and Loloff Pits. In addition 30 Jones Ditch shares used in the previous approval will not be applied to this plan. Only the return flow of the 30 shares is accounted for in the plan. A monthly breakdown of the stream depletions from the mining operations as Weil as the replacements made by lagged timing of the accretion credits is shown in the attached Table 1. As required by Section 8 of Senate Bill 89-120, the East 8"' Street Pit proposal to be added to the combined substitute water supply plan has been provided to an outside consultant for review. Based upon statutory requirements and the recommendations of the consultant for the East 8"' Street Pit, I hereby approve the proposed substitute water supply plan in accordance with Section §37-90-137(11), C.R.S., subject to the following conditions: This plan shall be valid through December 31, 2005 unless otherwise revoked or modified. 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 $217 per pit) no later than November 15, 2005. 2. Anew well permit must be obtained for the current use and exposed pond surface area for the gravel pits whose use has expanded since previously permitted. Those gravel pits are denoted above in Table A. The provisions of Colorado Revised Statute 37-90-137{2) .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 wells 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 canceled. 3. The total area of pond surtace exposed after December 31, 1980 for each of the pits shall not exceed those values listed in Table A of this approval. Should the total surtace area exposed exceed those amounts, an amendment will need to be filed with this office. 4. The total amount of ground water to be appropriated from each of the pits shall not exceed the values listed in Table B of this approval.