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it BLACK MOUNTAIN SAN D <br /> 420 Commerce St. Suite 500, Fort Worth,TX 76102 ' <br /> (817) 698-9901ft <br /> May 28, 2019 <br /> -ft0F8ECL4Af4 <br /> . <br /> �eter Hays AMO44F* <br /> Environmental Protection Specialist <br /> Colorado Division of Reclamation, Mining and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> RE: Black Mountain Sand DL LLC Lost Creek Mine M-2018-051 Construction Materials Regular(112) <br /> Operation Reclamation Permit Application Response to Public Comments <br /> Mr. Hays, <br /> Included below are Black Mountain Sand DJ LLC's (Black Mountain) response to the public comments and <br /> objections received for the above referenced Lost Creek mine permit application. As you are aware, Black <br /> Mountain has been in communication with several of the commenters as part of our public outreach <br /> program for this project and we have modified our proposed mining and reclamation plans based on <br /> public feedback. Black Mountain is in the process of drafting a mine permit application amendment, which <br /> will address these comments and objections as well as other public feedback we have received. <br /> During the public comment period, which was open from March 25— May 9, 2019, four comment letters <br /> and 3 objection letters were received by CDRMS for the Lost Creek project. A summary of those <br /> comments/objections and Black Mountain's response is included below: <br /> • Colorado Division of Water—Commenter <br /> o A statement that since the operation does not anticipate exposing groundwater, exposure <br /> must not occur&the operation must stay at least 2 feet above the water table <br /> throughout operations—Black Mountain's mine plan has been designed to stay at least 2 <br /> feet above the known water table within each phase of the mine plan. <br /> o A statement that applicant must identify specific well permits or water rights that will <br /> provide water for the project & provide evidence that water is approved for the proposed <br /> use— Black Mountain proposes to use water from existing wells on lands owned by Black <br /> Mountain to the west of the proposed Lost Creek project boundary. Black Mountain is <br /> currently in the process of converting the use of water rights from those wells to multiple <br /> use and will provide additional data, such as the well permit numbers and location, in the <br /> application amendment. If proof of multiple use is available at the time of amendment, <br /> such proof will also be provided, otherwise proof will be provided as soon as it is available. <br /> o A statement that any stormwater runoff captured by the operation must be released back <br /> into the stream system within 72 hours and may require a discharge permit— Black <br /> Mountain's stormwater designs for both construction and operations have taken into <br /> account this requirement. However, Black Mountain will add a clear statement stating as <br /> such in the application amendment. <br />