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25th Avenue Pit SWSP, (Amendment) Page 7 of 9 <br />May 30, 2017 <br /> <br />2 (aka Poudre Ponds, WDID 0303791) pursuant to its storage rights decreed in water court case no. <br />1999CW234, which are decreed for augmentation purposes. The attached Table 4 presents a list of <br />Greeley’s water rights, and includes other fully consumable sources which may be used for <br />augmentation in this plan. <br />A monthly breakdown of depletions and replacements for Flatiron Pits 3 and 4 is shown in the <br />attached Table 13A, while the monthly breakdown of depletions and replacements for Flatiron Pit 5 <br />is shown in the attached Table 13B. <br />Long-Term Augmentation <br />In accordance with the letter dated April 30, 2010 (copy attached) from the Colorado Division of <br />Reclamation, Mining, and Safety (“DRMS”), all sand and gravel mining operators must comply with <br />the requirements of the Colorado Reclamation Act and the Mineral Rules and Regulations for the <br />protection of water resources. The April 30, 2010 letter from DRMS requires that information be <br />provided to DRMS to demonstrate you can replace long term injurious stream depletions that result <br />from mining related exposure of ground water. <br />According to the submitted information, Pits 3 and 4 will be consolidated into a single pit during <br />the mining process, resulting in one remaining pit after Pits 5 and C are backfilled. The combined <br />pit will be lined via slurry walls and used as a reservoir for water storage by the City of Greeley. <br />Completion of mining and lining of the pits is anticipated to occur in 2027 (15 years from <br />commencement of mining). Long-term augmentation will not be required as the final reclamation <br />plan for the site includes lining or backfilling all ground water exposures. As the operator of the <br />site is the City of Greeley, a bond with DRMS has not been executed as bonds are not required for <br />municipal entities. <br /> <br />Conditions of Approval <br />I hereby approve the proposed substitute water supply plan in accordance with § 37-90- <br />137(11), C.R.S., subject to the following conditions: <br />1. This SWSP amendment shall be valid for the period of June 1, 2017 through May 31, 2019, <br />unless otherwise revoked or superseded by decree. If this plan will not be made absolute by a <br />water court action by the plan’s expiration date, a renewal request must be submitted to this <br />office with the statutory fee (currently $257) no later than April 15, 2019. <br />2. Well permit 78459-F (amended) was obtained for the current use and exposed pond surface <br />area of the gravel pit in accordance with § 37-90-137(2) and (11), C.R.S. <br />3. The total surface area of the groundwater exposed at the 25th Avenue Site after December <br />31, 1980 must not exceed 100 acres (the amount covered under the plan for augmentation <br />decreed in case no. 1999CW231). Should the total surface area exposed exceed this amount, <br />an amended SWSP must be filed with this office. <br />4. The annual amount of water used for dust control at the 25th Ave Site shall not exceed 6.3 <br />acre-feet, and the total product mined at the 25th Ave Site shall not exceed 371,000 tons per <br />year, which results in 5.5 acre-feet of water lost with the mined aggregate. All pumping for <br />dust control shall be measured in a manner acceptable to the division engineer. <br />5. Total consumption at the 25th Ave Site must not exceed these aforementioned amounts <br />unless an amendment is made to this plan. <br />6. Approval of this plan is for the purpose as stated herein. This office must first approve any