2008-09-03_PERMIT FILE - M2008006 (2)

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1 of the aggregate material is 8 feet. The change in elevation across the Site from north to south is approximately 4 feet with an average slope of 0.27%. The existing drainage facilities located on the Site include a channel that carries off-site water through the site to the southeast corner where it drains in to the Poudre River. The channel is fed ' by a 36" Reinforced Concrete Pipe (herein "RCP"). According to the Town of Windsor Master Drainage Plan dated October 3, 2003 (herein "the Report"), the 36" RCP has limited capacity because of sediment buildup. Three existing Corrugated Metal Pipe (herein "CMP") culverts are located along the channel at a dirt road crossing. The drainage channel will most likely be relocated along the west side of the Site to optimize the mining area. A concrete irrigation ditch is also located on-site, but the ditch has not been used in recent years and is in disrepair. Proposed Project Description Connell Resources, Inc. proposes to mine the Site for sand and gravel. The principal intended use for the sand and gravel is for construction aggregates. The average depth of the soil and overburden is 4.5 feet. The average thickness of the aggregate material is 8 feet, and the Site is estimated to contain approximately 410,000 cubic yards of sand and gravel. In order to eliminate negative impacts on the floodway during the proposed mining operations, the applicant proposes not to store any stockpiles or overburden at current ground levels. The initial material will be removed from the Site. After a portion of the mine is opened up, the stockpiles will be placed in the bottom of the pit. The permit boundary will encompass approximately 45 acres with approximately 30 acres being mined. The remaining area will consist of setbacks from roads and the Poudre River, utility right-of-ways, and site access roads. Various setbacks from adjacent roads, fences, adjacent structures, and the Poudre River will be observed as mining occurs. Items owned by the Applicant located within the proposed permit boundary, such as roads, fences, concrete irrigation t ditches, water wells and associated pumps, may be removed during the mining process. Connell Resources, Inc. anticipates mining and reclaiming the SerFer Project site in ' approximately 3'/2 years. Connell anticipates that they will mine approximately 10 to 13 acres per year or approximately 120,000 cubic yards of material per year. This schedule anticipates completion of mining and reclamation in 3'/z years for a total of 410,000 cubic yards of material. However, it is possible that due to market fluctuations, mining will progress slower than anticipated and additional time could be required for mining and reclamation of the Site. A CDPHE Discharge Permit will be maintained during the duration of this project. Approximately 30 acres will eventually be mined on the Site. Mining will begin on the south end of the Site near the river and will progress in a northerly direction with no more than 15 acres being exposed at any one time. The SerFer Project site will be mined over the anticipated span of three and a half years. ' Final Drainage Plan and Report - SerFer Pit EKW_ Applegate Windsor, CO 2 r Group.,. January 2008