2025-08-07_HYDROLOGY - M1977098 - Laserfiche WebLink

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Sievers Pit M-77-098 SWSP, Oldcastle SW Group, Inc. Page 8 of 12 August 7, 2025 perpetual lease of 29.1 acre-feet per year with the WDWCD under Contract No. 090521 LW(a), attached. The Applicant will obtain a new WDWCD lease for 6.0 acre-feet annually upon approval of this SWSP. The sources of replacement water from WDWCD have been identified as Ruedi Reservoir, Green Mountain Reservoir, Alsbury Reservoir, or other sources available to the District. The attached "Sievers Gravel Pit Water Balance" table shows that total proposed lagged depletions at the pit are 31 .07 acre-feet, which exceeds the 26.1 acre-feet of depletions contemplated in the 83CW65 decree. The water balance indicates that the 32.50 acre-feet of HCU credits from 83CW65 and 6.0 acre-feet of WDWCD water, accounting for the projected call scenario, are sufficient to replace all out-of-priority depletions at the pit. Conditions of Approval This SWSP is hereby approved in accordance with section 37-90-137(11), C.R.S., subject to the following conditions: 1. This SWSP is approved with the effective date of July 1, 2025, and shall be valid through June 30, 2027, unless otherwise revoked. 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 April 1, 2027. 2. Total consumption at the Sievers Pit site must not exceed the exposed groundwater surface area or depletion amounts above, as shown on attached Tables 1-3 and "Sievers Gravel Pit Water Balance" table, unless an amendment is made to this SWSP. 3. Approval of this SWSP is for the purposes as stated herein. This office must first approve any additional uses for the water. Any future additional historical consumptive use credit given (e.g., agricultural water transfer) for this site must consider all previous credits given.