2014-04-22_HYDROLOGY - M2008006 - Laserfiche WebLink

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Mr. Todd Williams, P.E. Page 3 of 6 April 21, 2014 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 5 37 -90- 137(11), C.R.S., subject to the following conditions: 1. This SWSP shall be valid for the period of April 1, 2014 through March 31, 2015, unless otherwise revoked, modified, or superseded by decree. 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 75825 -F was obtained for the current use and exposed pond surface area of the gravel pit in accordance with S 37 -90- 137(2) and (11), C.R.S 3. The total surface area of the ground water exposed at the SerFer Pit must not exceed 0.58 acre, 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 4.0 acre - feet and the total product mined at the SerFer Pit shall not exceed 240,000 tons per year, which results in 3.53 acre -feet of water lost with the mined product. 5. Total consumption at the SerFer Pit must not exceed the aforementioned amounts unless an amendment is made to this plan. 6. Approval of this plan is for the purposes as stated herein. Any additional uses of this water must first be approved by this office. Any future additional historical consumptive use credit given (e.g., agricultural water transfer) for this site must consider all previous credits given. 7. All pumping for dust control purposes shall be measured in a manner acceptable to the division engineer. 8. All releases of replacement water must be sufficient to cover all out -of- priority depletions in time, place, and amount and must be made under the direction and /or the approval of the water commissioner. The replacement may be aggregated to maximize beneficial use. The water commissioner and /or division engineer shall determine the rate and timing of an aggregated release.