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The WRL, by its nature, will not risk any negative impact to the area groundwater. There is no <br /> expected change to groundwater during or after reclamation under the non-reservoir Reclamation <br /> alternative. If a reservoir Reclamation alternative is chosen, a thorough hydrologic study will be <br /> completed and designs will be presented to the DRMS prior to initiating Phase 4 or 5 mining. <br /> 6.4.7(3) <br /> Water during the initial development of the quarry and into Phase 1 mining will be supplied by <br /> trucked in water from a legal source. 40,000-50,000 gallons a day (approximately 36-46-acre feet <br /> per year) is a high and conservative estimate of daily use, in peak production conditions, <br /> encompassing dust control, drilling, incidental product washing and other uses. Gravel washing <br /> may occur during material processing. <br /> Following initial development and when economically appropriate, a well or other legal source <br /> of water, may be developed. Alternatively, water may be pursued and supplied via pumps and <br /> pipes from either Clear Creek or the North Fork of Clear Creek. All future sources of water will <br /> be permitted and legal sources of water. <br /> Dust will be controlled by water on a day-to-day basis, though additional dust mitigation on <br /> roadways includes bi-annual or as needed applications of magnesium chloride. Water will be <br /> used as needed to eliminate any problem dust areas and to be used in a spray bar during initial <br /> crushing. <br /> 6.4.7(4) <br /> Water will be purchased from a consumable source offsite to begin this operation. <br /> The site will not affect existing water rights. The quarry will not expose groundwater and will <br /> not store stormwater for more than 72 hours. After reclamation, stormwater encountered in the <br /> mining area will continue to infiltrate or evaporate. <br /> 6.4.7(5) <br /> The operator will apply for and receive a NPDES permit prior to commencing mining, if <br /> necessary. <br /> Young Ranch Resource ,_,t•: �� ,. <br /> February 2020 G-6 <br />