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Mr. Stephen Buechner, P.E. December 8, 2016 <br /> Page 3 of 6 <br /> feet (measured from the centroid of the exposed ground water surface), and the location of the <br /> parallel impermeable boundary was estimated to be 2,650 feet from the stream. <br /> During this plan approval period, no ground water will be used for reclamation, concrete batching, <br /> or any other purpose. As shown on Table 3, attached, the total consumptive use was calculated to <br /> be 35.73 acre-feet and lagged stream depletions were calculated to total 43.58 acre-feet during <br /> this SWSP period. <br /> SITE DEWATERING <br /> The Applicant began dewatering the Parkdale Pit in 2012 to assist in the mining of material below <br /> the groundwater table. The water is removed from the ground and placed into a series of <br /> dewatering trenches. This water will be eventually piped and then discharged on the north side of <br /> the property boundary into Currant Creek which is a tributary to the Arkansas River. All water <br /> pumped from the pit reaches Arkansas River within the same month it is pumped. The Applicant <br /> will monitor the dewatering operations and include the data in their monthly accounting submittals <br /> to the State Engineer's Office. <br /> REPLACEMENTS <br /> The proposed sources of replacement water for this pit are a five-year lease of 50 acre-feet per <br /> year of fully consumable water from the Board of Water Works of Pueblo ("PBWW"), valid April 1, <br /> 2016 through March 31, 2021, attached, and the applicant's ownership of five shares of Twin Lakes <br /> Reservoir and Canal Company stock, yielding approximately 3.5 acre-feet of water. The PBWW <br /> water will be provided at the City of Pueblo wastewater treatment plant located east of Pueblo <br /> when adequate exchange potential exists to make that replacement water available at the Parkdale <br /> Project site. When there is insufficient exchange potential to utilize reusable effluent, the PBWW <br /> will release water from upstream storage at Twin Lakes Reservoir. Upstream reservoir releases will <br /> be subject to a 0.07 percent per mite river transit toss, which equates to approximately 6.55 <br /> percent from Twin Lakes to Parkdale. <br /> Front Range Aggregates has an additional backup supply for this project from a 50 acre-foot lease <br /> with Canon City Water Department that will only be used in the event that the other sources <br /> become inadequate. The Canon City lease, a copy of which was provided to this office on <br /> September 12, 2008, is valid until January 2035. <br /> As described in the SWSP request and shown in Table 4, attached, there was additional exposure of <br /> ground water that occurred June 2015 through September 2016 beyond that allowed by the SWSP <br /> currently approved at the time; therefore, 20.2 acre-feet of additional replacement water will be <br /> provided during this SWSP period. The monthly depletions and replacement requirements are <br /> shown on Table 3, attached. <br /> CONDITIONS OF APPROVAL <br /> I hereby approve the proposed SWSP in accordance with S37-90-137(11), C.R.S., subject to the <br /> following conditions: <br /> 1. This SWSP shall be valid for the period of October 1, 2016 through September 30, <br /> 2017, unless otherwise revoked, modified, or superseded by decree. If this plan will <br /> not be made absolute by a water court action by the plan's expiration date, a renewal <br /> request must be submitted to this office with the statutory fee (currently $257) by <br /> Office of the State Engineer X;� ��9 <br /> 1313 Sherman Street,Room 821,Denver,CO 80203 P 303.866.3581 l"ter <br /> r � <br /> www.water.state.co.us <br /> ''•.?876 <br />