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cOLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> March 14, 2022 <br /> Chris Gilbreath <br /> Elk Ridge Mining and Reclamation, LLC <br /> P.O. Box 33695 <br /> Denver, CO 80233-0695 <br /> Re: New Horizon North Mine (Permit No. C-2010-089) <br /> Permit Renewal 2 (RN2) <br /> Preliminary Adequacy Review <br /> Dear Mr. Gilbreath: <br /> The Division has reviewed Elk Ridge Mining and Reclamation, LLC `s application for Permit <br /> Renewal No. 2 (RN2). <br /> The Division reviewed Groundwater and groundwater monitoring as described in Section <br /> 2.05.6(3) and Appendix 2.05.6(3)-3. The Division has the following comments with regards to <br /> the groundwater portions of the permit: <br /> 1. There are no adequacy issues related to groundwater monitoring that <br /> should delay the approval of RN-2. <br /> 2. The PAP has clearly established groundwater points of compliance <br /> where impacts to groundwater quality will be assessed. <br /> 3. Groundwater in the area has not been classified by the Colorado Water <br /> Quality Control Commission (it is not listed in REGULATION NO. 42 <br /> - SITE-SPECIFIC WATER QUALITY CLASSIFICATIONS AND <br /> STANDARDS FOR GROUNDWATER), so the applicable standard at <br /> the point of compliance (POC)wells is the Interim Narrative Standard <br /> (INS) from REGULATION NO. 41 - THE BASIC STANDARDS <br /> FOR GROUNDWATER. <br /> 4. Although baseline data prior to 1994 does not exist,the groundwater <br /> monitoring plan established at the mine is such that it is appropriate to <br /> use more recent data from the site when applying the INS (as opposed <br /> to relying on table values from Reg. 41). <br /> flF'�010 <br /> Physical Address: 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 <br /> Mailing Address: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 https://drms.colorado.i.gov I <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director <br /> *1876�` <br />