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P <br />® Climax Molybdenum <br />A Freeport-McMoRan Company <br />June 16, 2011 <br />COLORADO OPERATIONS <br />Henderson Mill <br />P.O. Box 68 <br />Empire, CO 80438 <br />Phone (303) 569-3221 <br />Fax (303) 569-2830 <br />Via Email and UPS Tracking Number: 1Z 804 847 02 6487 3163 //RECEIv60 <br />? Mr. Peter Hays ` JUN 17 2011 <br />Division of Reclamation Mining and Safety Oh"on of reclamation, <br />1313 Sherman St., Rm. 215 -D Mming and Safety <br />Denver, CO 80203 ,/? <br />Re: Permit M 1977-342, TR=04, Submittal df Supplemental Information for Construction <br />Certifications and As-Built Drawings for Environmental Protection Facilities <br />Dear Mr. Hays: <br />Pursuant to your April 19, 2011 Adequacy Review and request for additional information regarding TR-04 <br />Environmental Protection Facility (EPF) as-built drawings and construction certifications, Climax <br />Molybdenum Company (CMC) is submitting the supplemental documentation described below. <br />Attachment numbering has been preserved to provide consistency with the original submittal: <br />• Mill Process Water Supply Pipeline Replacement - Revised as-built drawings are included as <br />Attachment 1. <br />• Mill Seepwater Pipeline Extension - Revised as-built drawings are included as Attachment 2. <br />The revision date of 5/13/11 is shown on the drawings, with the description "Record Drawings". <br />This is the nomenclature W.W. Wheeler utilizes for as-built drawings. <br />• Orfom D8 Depressant Use and Storage - Revised as-built drawings are included as Attachment <br />3. <br />• Qualifications for professionals certifying construction and approving design plans are included as <br />Attachment 4. As communicated through voice messages, the individuals required to submit <br />qualifications are: Amanda Hren, Dillon Benbow and Martin Kreel. <br />• Additional clarifications and details regarding attachments 1 and 3 are included in a letter from <br />Mr. Dillon Benbow to Miguel Hamarat, presented as Attachment 5. The numbering from your <br />April 19 letter has been preserved in this letter. <br />Please contact me at (303) 569-3221, ext. 1233 or Bryce Romig (ext. 1204) if you have any questions or <br />require additional clarification or information regarding this submittal. <br />Sincerely, <br /> <br />Miguel Hamarat <br />Chief Environmental Engineer <br />Climax Molybdenum Company <br />Henderson Operations <br />CC (via Email): <br />T. Waldron, DRMS <br />B. Romig, Climax <br />