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, CLIMAX MOLYBDENUM COMPANY <br />A S,ros.avr at Ne o OGOQe :e 0^ <br />N•lay 23. 21)02 <br />Mr. Allen Sorenson <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street. Room 215 <br />Denver. Colorado 80203 <br />RE: 3 -Dam Seepwatcr'Management. 21)02 Leak Down Test Certification. Henderson \till. <br />Technical Revision TR -09, Permit No. M- 77 -3-t2 <br />Dear Mr. Sorenson: <br />This letter is to provide the Division of Minerals and Geology (Division) with the results of the <br />2002 leak down test on the 3 -Darn seepwater lines. Although Henderson had earlier asked for <br />permission to delay the test until after the completion of a proposed project to relocate the 3-Darn <br />seepwater line discharge, we performed the test on May 22" due to concerns that the discharge <br />relocation project will not be completed this summer. <br />The test was completed in the following manner. On May 10 "' the 3 -Dam seepwater discharge <br />valves were closed. The pipes were allowed to fill until completely full on the morning of May <br />22 ". A small trash pump was utilized to speed up the filling process. Once both lines were full. <br />the inlet valves were closed and a pressure reading was taken from the pressure gage located at <br />the discharge valves. The initial pressure reading was taken on May 22" at 9 AM. Both gages <br />read 78 psi. Pressure readings were taken again 24 -hours later and both gages read 78 psi. <br />Therefore both lines have passed the annual leak down certification as required by TR -009. <br />Please find enclosed a certification from Mr. Michael Ley. Civil Engineer /Project Nlanage1. <br />regarding the results reported to the Divison for the annual 3 -Dam leak down test <br />Please call if you have any questions. 1 can be reached at (303) 569-3221 ext. 221.1. <br />Very truly yours. <br />Enclosure <br />Erich Bower <br />Sr. Environmental Engineer <br />Climax Molybdenum Company <br />Cc: Mike Ley — Climax <br />Rich Wagner — Climax <br />Dave Long -- Climax <br />HENDERSON OPERATIONS <br />=S3C2 4oail3 <br />Pa -shell Colo 90468 <br />1303156 1 3221 <br />Fa& (3701 72 ).0(738 <br />