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COLORADO OPERATIONS <br /> Climax MolybdenumRECEIVED Henderson <br /> P.O. Box'68 <br /> A Freeport-McMoRan Company JUN 0 3 2022 Empire,CO 80438 <br /> Phone(303)569-3221 <br /> Fax(303)569-2830 <br /> DIVISION OF RECLAMATION, <br /> MINING&SAFETY-MINERALS <br /> May 31, 2022 <br /> Submitted via email and USPS 9405 5036 9930 0262 0084 09: <br /> Mr. Peter Hays <br /> Colorado Division of Reclamation, Mining and Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, Colorado 80203 <br /> Re: Permit M-1977-341, Submittal of Annual Water Monitoring Report—Henderson Operations <br /> Groundwater Management Plan <br /> Dear Mr. Hays: <br /> Climax Molybdenum Company (Climax) is submitting this Annual Water Monitoring Report to the Division <br /> of Reclamation, Mining and Safety(DRMS) pursuant to the requirements in Section 7.1 of the Henderson <br /> Operations Groundwater Management Plan (GWMP) approved on July 25, 2012 as Technical Revision <br /> 16 to Reclamation Permit No. M-1977-342. <br /> Included in this annual report are: <br /> • Data tables and graphs from triannual DRMS sampling events for Point of Compliance (POC)and <br /> non-POC wells for both the Henderson Mine and Henderson Mill. <br /> • Explanation of outliers, trends, and Numeric Protection Limits (NPL) exceedances (where <br /> applicable); <br /> If you have any questions or need additional information, please do not hesitate to contact me at <br /> gnigpele anfmi.com or(720) 671-2248 or Miguel Hamarat at mhamarata-fmi.com or(720) 942-3255. <br /> Sincerely, <br /> Geoff Niggeler <br /> Chief Environmental Engineer <br /> Climax Molybdenum Company <br /> Henderson Operations <br /> Attachments: <br /> 1. Annual Water Monitoring Report <br /> Cc(via email): <br /> Miguel Hamarat, Climax <br /> Ben Bates, Climax <br />