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• (Page 3) <br />MINE ID # OR PROSPECTING ID # M-94-117 <br />INSPE'sCTION DATE 8/26/95 INSPECTOR'S INITIALS ACS <br />evaporation in the tailing pond, ae soon ae possible. The Hazel-A is needed for auxiliary <br />storm water storage during spring run-off. <br />Decant Line <br />Mark Steen expressed the concern that the decant line is cracked or broken below the level <br />of the tailing. The simple method to check the integrity of the line would be to open the <br />cut out valve below the pond once there ie water in the pond. The Division will conduct this <br />checlc during a Bite inspection during September, 1995. The operator must assure that the key <br />to the locking decant line valve box ie available during the next site inspection. For the <br />presfant, the decant line valves must remain closed. These valves may not be opened, except <br />in the event of imminent dam over-topping, without Division approval. Approval to open the <br />valves would be predicated on a successful demonstration of decant line integrity, <br />establishment of adequate freeboard behind the Hazel-A bulkhead, and installation of a <br />fund:ional collection and pump-back system outby of the Hazel-A bulkhead. <br />Haze:L-A Slimes <br />Since, in the Division's view, the results of the whole rock analysis of a Hazel-A slimes <br />eamp:Le collected 7/19/95 were inconclusive, another sample was collected during this <br />inspection. The operator was provided a split of this sample. The Division's sample is <br />beinc) processed by ACTLab. The lab will provide a polished thin section of the slimes for <br />petrographic analysis. Such analysis should be definitive ae to whether the Hazel-A slimes <br />are 1:ailinq or some naturally derived material. The slides should be back from the lab by <br />the middle of September. <br />cc: Carl Mount, DMG <br />Gwen Fraser <br />Colina Oro Molino, Inc. <br />P.O. Box 80905 <br />Seattle, WA 98108 <br />Richard Fanyo <br />Dufford 6 Brown <br />1700 Broadway, Suite 1700 <br />Denver, CO 80290 <br />Bob Griffith <br />Water Quality Control Division <br />4300 Cherry Cr. Dr. South <br />Denver, CO 80222-1530 <br />Mark Steen <br />P.O. Box 1523 <br />Longmont, CO 80502 <br />Bob Mason <br />P.O. Box 7060 <br />Boulder, CO 80306 <br />Evan Freirich <br />1942 Broadway, Suite 309 <br />Boulder, CO 80302 <br />Doug Parker <br />P.O. Box 1077 <br />Boulder, CO 80306 <br />I & E: Contact Address <br />~ CE <br />NAME _ Tim Hartley ~ BL <br />OPERATOR Colina Oro Molino, Inc. ~ FS <br />STREET P.O. Box 17304 ~ HW <br />CITY/STATE/ZIP Boulder, CO 60308-0304 ~ ttMWMD (CH) <br />~ SE <br />,~ WQCD (CH) <br />OTHER <br />