2014-04-22_HYDROLOGY - M1999050 - Laserfiche WebLink

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Mr. Todd Williams, P.E. Page 4 of 7 April 21, 2014 Creek reservoir accounting. A transit loss will be assessed for the distance from the outlet of Fossil Creek Reservoir (WDID 0303774) to the Poudre River to the point where depletions from the Timnath- Connell Pit impact the river. The point of depletions is estimated to be at the east quarter corner of Section 3, T6N, R68W, 6th P.M., approximately 1.5 miles upstream of the New Cache la Poudre Irrigating Company (aka Greeley No. 2 Ditch) headgate (WDID 0300929). Any excess replacement water leased from the City of Fort Collins and any excess recharge credits generated from recharge of the 2.5 BEDC shares under this SWSP will be used as a replacement source under the SerFer Pit SWSP (WDID 0302534). Long Term Augmentation The final reclamation plan for this site includes both a lined reservoir and unlined ponds. The successful completion of a lined reservoir will eliminate long term depletions that would require a long term augmentation plan. After completion and approval of the reservoir liner this area must continue to be covered by a valid SWSP until the lagged depletions from mining operations are no Longer impacting the river. Two unlined ponds will remain on the site after final reclamation, one of which will continue to be used as a recharge pond. The creation of permanent unlined ponds will result in long term evaporation of ground water which requires a long term augmentation plan. The Applicant is required to obtain a water court augmentation plan to cover the long term depletions associated with such ground water ponds. In accordance with the letter dated April 30, 2010 (see attached) 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. In accordance with approach nos. 1 and 3 identified in that letter, the applicant holds a bond through DRMS in the amount of $510,198. A site inspection on August 31, 2012 by DRMS confirmed the bond is sufficient to complete the reclamation plan. Conditions of Approval I hereby approve this substitute water supply plan, in accordance with 5 37 -90- 137(11), C.R.S., subject to the following conditions: 1. This plan is approved with an effective date of April 1, 2014 and shall be valid through March 31, 2015 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 $257) no later than February 15, 2015. 2. Well permit 53419 -F was obtained for the current use and exposed pond surface area of the gravel pit in accordance with 5 37 -90- 137(2) and (11), C.R.S. The total surface area of the ground water exposed at the Timnath- Connell Pit (not including the recharge pond) must not exceed 6.03 acres, resulting in 14.53 acre -feet per year of evaporative loss. 4. The total amount of ground water used for dust control at the Timnath- Connell Pit shall not exceed 0.8 acre -feet per year. No product shall be mined at the site during this plan period. 5. Total consumption at the Timnath- Connell Pit shall not exceed the aforementioned amounts unless an amendment is made to this plan.