2015-05-01_HYDROLOGY - M2008006 - Laserfiche WebLink

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Mr. Todd Williams, P.E. Page 3 of 6 April 24, 2015 to this SWSP (51.84 acre -feet to cover depletions and 0.48 acre -feet to cover transit losses). As more completely described in the Timnath- Connell SWSP, 2.5 shares of the Box Elder Ditch Company, owned by Connell Resources, will be diverted into a recharge site (WDID 0302059) at the Timnath- Connell Pit. The evaporation losses and operation of the recharge site are covered by the Timnath- Connell Pit SWSP. This recharge site is located approximately 4 miles upstream of the SerFer Pit location. Both the recharge site and the SerFer Pit impact the Cache La Poudre River at or about the east quarter corner of Section 3, T6N, R68W, 6t" P.M., approximately 1.5 miles upstream of the New Cache la Poudre Irrigating Company (aka Greeley No. 2 Ditch) headgate (WDID 0300929). As such, a transit loss of 1.0% (0.25% per mile) is assessed to the recharge credits to be used for replacement purposes at the SerFer Pit site. Conveyance loss for delivery of replacement water is subject to assessment and modification as determined by the division engineer. Long Term Augmentation In accordance with the letter dated April 30, 2010 from the Colorado Division of Reclamation, Mining, and Safety ( "DRMS "), all sand and gravel mining operators must comply with the requirements of the Colorado Reclamation Act and the Mineral Rules and Regulations for the protection of water resources. The April 30, 2010 letter from DRMS required that you provide information to DRMS to demonstrate you can replace long term injurious stream depletions that result from mining related exposure of ground water. The final reclamation plan for this site is to create a lined reservoir of approximately 20 acres and does not include the creation of unlined ground water lakes. Successful completion of the reclamation plan will eliminate any long term evaporative losses that would necessitate a long term augmentation plan. In 2008 the Applicant obtained a bond for $328,445 through DRMS to cover the costs of lining or backfilling the pit in the unforeseen event where the operator is unable to complete the reclamation plan. A site inspection on August 31, 2012 by DRMS confirmed the bond was sufficient to complete the reclamation plan. Conditions of Approval I hereby approve this substitute water supply plan, in accordance with S 37 -90- 137(11), C.R.S., subject to the following conditions: 1. This SWSP shall be valid for the period of April 1, 2015 through March 31, 2016, unless otherwise revoked, modified, or superseded by decree. Provided that the clay liner for the site receives approval from the SEO, no depletions associated with the SerFer Pit will remain after the conclusion of this plan period and no subsequent SWSP will be required for this site. However, if any depletions at the site will persist beyond this plan's expiration date, a renewal request must be submitted to this office with the statutory fee (currently $257) no later than February 1, 2016. 2. Well permit 75825 -F was obtained for the current use and exposed pond surface area of the gravel pit in accordance with 9 37 -90- 137(2) and (11), C.R.S. A Well Abandonment Report (form no. GWS -09) must be filed with this office if the gravel pit is either backfilled or lined. 3. The total surface area of the ground water exposed at the SerFer Pit must not exceed 7.0 acres during April 2015 and 0 acres thereafter, resulting in 1.50 acre -feet per year of evaporation loss. 4. The annual amount of water used for dust control at the SerFer Pit shall not exceed 5.60 acre - feet and the total product mined at the SerFer Pit shall not exceed 15,000 tons per year, which results in 0.22 acre -feet of water lost with the mined product.