2014-06-18_HYDROLOGY - M1977439 - Laserfiche WebLink

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Upper Poudre Combined SWSP Page 6 of 10 June 18, 2014 multiplying the previous irrigation season's annual delivery to the river (457.99 acre-feet for 2013) by its respective monthly factor. Return flow obligations will be calculated based on the actual timing of direct returns. After accounting for return flow obligations, the Taylor Et Gill Ditch shares delivered directly to the Cache La Poudre River are projected to generate a total of 44.24 acre-feet of available replacement water during 2014. A monthly breakdown of the stream depletions from the mining operation as well as the replacement credits from recharge and direct delivery of the Taylor Et Gill Ditch shares is shown in the attached Table 5. Long Term Augmentation In accordance with the letter dated April 30, 2010 (copy 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 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. The DRMS letter identifies four approaches to satisfy this requirement. In accordance with approach nos. 1 and 3, you have obtained bonds through DRMS which may be used to backfill or line areas of exposed ground water. According to the mining permits with DRMS, the reclamation plan for the Home Office Pit and North Taft Hill Expansion Site is to create unlined ground water ponds. These two sites also have conditional water storage rights for future lined reservoirs in water court case no. 92CW157. For the Overland Ponds site, the DRMS mining permit reclamation plan is to create lined reservoirs and the site has pending water storage rights for future lined reservoirs in water court case no. OOCW251. If reclamation at any mine site produces a permanent water surface exposing ground water to evaporation, an application for a plan for augmentation must be filed with the Division 1 Water Court at least three years prior to the completion of mining to include, but not be limited to, long-term evaporation losses. If a tined pond results after reclamation, replacement of lagged depletions shall continue until there is no longer an effect of stream flow. A summary of the final reclamation plan and the current posted bond amounts for each site is shown on the next page. Table D - Final Reclamation Summary Site Name DRMS Permit Final Bond Comments Associated Decrees Reclamation Amount Ground water lakes requires plan for 92CW157- Conditional Home Office round water augmentation to be filed three years Pit Ground lakes $3,153,345 prior to the completion of mining. storage right for North Shores Currently bonded for lining. Reservoir. Requires lining. OOCW251 - Conditional Overland storage right for various Ponds Site Lined reservoirs $1,948,000 Currently bonded for lining. reservoirs (collectively known as the Overland Trail Reservoirs). Requires lining. North Taft Ground water lakes requires plan for 92CW157- Conditional Hill Expansion Ground water lakes $470,124 augmentation to be filed three yearsprior to the completion of mining. storage right for Taft Hill Site Currently bonded for backfilling. Reservoir. Requires lining. Conditions of Approval I hereby approve this substitute water supply plan, in accordance with Section 37-90-137(11), C.R.S., subject to the following conditions: