2015-11-03_HYDROLOGY - M2000082 - Laserfiche WebLink

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East 8th Street Pit SWSP Page 3 of 5 October 29, 2015 mining lease has previously been provided to this office. A September 24, 2015 letter from Greeley confirming the monthly replacement schedule was provided with this SWSP request and is attached. For this plan period, Greeley will provide a total of 451.6 acre-feet of fully consumable water that has been changed for augmentation use. Greeley anticipates delivering the replacement water to the Cache la Poudre River at Greeley's wastewater treatment plant (WDID 0302312) located approximately '/z mile upstream of the East 8th Street Pit. The delivery schedule incorporates a transit loss of 0.13% based on the currently assessed rate of 0.25% per mile. Any releases by Greeley at a location other than its WWTP must be coordinated with the water commissioner to insure the proper transit losses are applied and that no intervening water rights are injured. In addition, if a different transit loss is determined by the division engineer or water commissioner, the Applicant must modify their accounting and replacements as necessary to be consistent with the determined transit loss. 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 requires 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 number 1, Superior Oilfield Services Co., LTD has submitted a financial warranty in the amount of $270,000 for the East 8th Street operation, which the Mined Land Reclamation Board has determined equals the estimated costs of reclamation. It is noted that per the mining lease agreement with the City of Greeley (landowner), Greeley has the long term augmentation responsibility at this site. Conditions of Approval I hereby approve this substitute water supply plan, in accordance with § 37-90-137(11), C.R.S., subject to the following conditions: 1. This SWSP shall be valid for the period of November 1, 2015 through October 31, 2016, unless otherwise revoked, modified, or superseded by decree.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) prior to the expiration date but no later than August 1, 2016. 2. Well permit no. 63551-F, as amended, was obtained for the current use and exposed water surface area of the gravel pit in accordance with § 37-90-137(2) and (11), C.R.S. 3. The total surface area of the groundwater exposed at the site must not exceed one (1) acre from November 2015 through July 2016, 5.7 acres in August 2016, 10.3 acres in September 2016, and 15 acres in October 2016, which results in a maximum evaporative annual loss of 10.71 acre-feet. 4. The annual amount of water used for dust control at the East 8th Street Pit shall not exceed 1.38 acre-feet and the total product mined at the site shall not exceed 500,000 tons per year, which results in 7.36 acre-feet of water lost with the mined aggregate. All pumping for dust control shall be measured in a manner acceptable to the division engineer. 5. The volume of refill of the pit must not exceed 560 acre-feet. 6. Total consumption at the East 8th Street Pit must not exceed these aforementioned amounts unless an amendment is made to this plan.