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Climax Mine <br />March 26, 2018 <br />Page 2 of 2 <br />The permit may be further modified as appropriate in the future if site specific classification and standards are <br />adopted by WQCC. <br />DRMS agrees that it is reasonable to monitor for a smaller subset of analytes from WQCC Regulation 41 Tables I <br />through 4 as "indicator parameters" on a regular (quarterly) basis, and also accepts the rationale provided for <br />selecting the quarterly monitoring analyte list as provided in section 5 of the submitted WQMP - with the addition <br />of fluoride. Fluoride values in the Arkansas basin point of compliance well ARK-MW-OO1D are very close to, <br />and have met at several times, the existing Table Value Standard. DRMS feels that it is appropriate at this time to <br />include fluoride to the list of "indicator parameters" sampled and analyzed for on a quarterly basis at the points of <br />compliance. The resulting quarterly data will be utilized to determine if expanded monitoring is warranted. It <br />should be noted that DRMS or WQCC may require Climax to demonstrate compliance with the full Interim <br />Narrative Standard (or site specific standard ifrwhen adopted) analyte list at any time. <br />This concludes the Division's adequacy review of TR27. This letter shall not be construed to mean that there are no <br />other technical issues in the submittal. Other issues may arise as additional information is supplied. DRMS is <br />committed to working with Climax to approve a Water Quality Monitoring Plan at this site that will allow mining to <br />continue while implementing all reasonable environmental protections in compliance with WQCC and DRIVIS rule, <br />DRMS is open to meeting with Climax if it would be useful to help resolve any of the issues listed above. <br />If you have any questions, please contact me at (303) 866-3567 x8140. <br />Sincerely, <br />6�� -0 <br />Eric Scott <br />Environmental Protection Specialist <br />