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iii iiiiiiiiiiiii iii <br />999 <br />MEMO TO FILE <br />Date: Thursday, February I5, 2001, 4:06 o.m. <br />w /l <br />Specialist: Allen Sorenson Signed: <br />SubjecdOperator/Operation/File No. Various. Henderson Mill. Climax <br />Molybdenum Company. Permit No. M-1977-342 <br />Type of Interaction: Meeting Phone Other <br />Person(s) contacted and affiliation: Erich Bower, Environmental Coordinator. Henderson blSll. <br />303/569-3221 ext. 2214 <br />Summary and Resolution of Interaction: Voice mail from Erich Bower on two subjects: <br />1. Planning underway to install ground water interception wells below l-Dam. Questions about permitting aspects <br />to incorporate interceptor wells into ground water protection section of the reclamation permit. This can be <br />managed as a TR, Rule 3.1.7(5). Interceptor wells would be considered practice-based permit conditions <br />protective of ground water, Rule 3.1.7(2)(a). Necessary to evaluate interaction of alluvial and bedrock aquifer <br />as a component of the design phase for interceptor system, see Division's adequacy review 1 or TR-O5. <br />2. Topsoil salvage to occur in upper tailing basin during summer 2001. Considerations relative to stockpiling <br />locations and potential for stockpiles to interfere with potential future location of milVtailing water barge pump <br />(to replace current decant system). Reference Rule 3.1.9: <br />(3) Topsoil stockpiles shall be stored in places and configurations to minimize erosion and located in areas where <br />disturbance by ongoing mining operations will be minimized. Such stockpile areas must be included in the <br />affected areas and subject to all reclamation requirements. The Board may require imrr~~ediate planting of <br />and annual and/or perennial on topsoil stockpiles for the purpose of stabilization. <br />(4) Once stockpiled, the topsoil shall be rehandled as little as possible until replacement on the regraded, <br />disturbed area. Relocations of topsoil stockpiles on the affected land require Board or Office approval. <br />Approval in most cases would be granted by way of technical revision. <br />Required action: re[um phone call on Monday, February 19, 2001 or Tuesday, February 20, 2001 (Mr. Bower does <br />not work Fridays and may no[ be in Monday, which is a holiday). <br />c:\windows\personalVrenderson interceptor wells.doc ~t C / n~/I ~~,~/~'~' <br />