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• <br />and will be adequate for the level of anticipated [ruck traffic associated with this proposed gravel pit. <br />The proposed haul road between Routt County Road # 179 and US Highway 40 will also have a <br />running surface width of approximately 35 feet and including cut and fill slopes will average 50 feet <br />wide. <br />8. Water Use. It is anticipated that approximately 50,000 gal Ions of water will be used per day during <br />the peak operating period during the summer months. This water will be obtained from the waters <br />collected in the dewatering pit or from the proposed sedimentation pond shown in the southwestern <br />portion of the mine azea on Map 3, Camilletti Milner Pi[ # 2 -Mine Plan Map. <br />9. Impacts of Minine on Ground and Surface Waters Mining of this site is not anticipated to have <br />any noticeable impacts on surface waters since there are almost no surface water flowing across the <br />proposed mine site and other than the bridge which will span the wetland azea on the east side of the <br />proposed mine pit azea to construct the access road no direct impacts aze planned for any areas <br />containing any surface waters. Impacts to ground waters will occur as a result of the dewatering <br />operations which are necessary to expose and excavate the gravel deposit on this site. It is esti ted <br />that dewatering will result in approximately 750,000 gallons per day or 52] gallons per ine ill <br />be generated during the dewatering operations. tom" ~`,.~..,~ -~...~ <br />This dewatering will initially increase the quantity of waters leaving the site in the early spring when <br />operations commence at this site. Impacts of the dewatering operations on water quality aze not <br />anticipated to be adverse. The anticipated dewatering trench will be constructed with designed sumps <br />where waters will be allowed to collect in excavated depressions and then discharged into the <br />proposed surface water system and sediment ponds. At the proposed outlet to the sediment pond <br />waters will be discharged into the receiving stream only afrer the collected waters aze clear of <br />suspended sediments and/or other potential pollutants. Examination of numerous other mine <br />dewatering operations in the Yampa River Valley suggest that once the water has been allowed to <br />settle the potential of increased sedimentation from these sumps is very small. <br />10. Water Rights. The owner and operator of this proposed mine pit have filed an Application for <br />a Gravel Pit well permit with the office ofthe State Engineer. Therefore, it is not it is not anticipated <br />that there will be any injury to any existing water rights as a result of this operation. <br />11. Acid or Toxic Forming Materials. There aze no known acid or toxic forming materials which <br />have been identified in the alluvial gravel deposits in this area. Since all ofthe materials planned for <br />removal at this site have been subjected to repeated cycles of reduction and oxidization during the <br />terms of geological time by the changing water table of the Yampa River, no concerns with these <br />materials are anticipated. <br />12. Minimizing Disturbance to the Hydrologic Balance. Immediate disturbances to the hydrological <br />balance will be controlled by controlling the timing and quality of waters collected in the dewatering <br />trench which will be constructed azound the proposed mine pit area as shown on Map 3, Camilletti <br />Milner Pit # 2 -Mine Plan Map. This trench will also act as a temporary treatment facility for surface <br />9 <br />