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~: <br />Mr. Grcg Lewick~ <br />Grce Lewicki and Associates <br />February 13. 1999 <br />on all of the parameters in the standards in 1997 and 1998. Alluvial water samples indicate <br />little or no influence on the water quality in Trout Creek. <br />13. Comparison of 1997 and 1998 hydrologic data with PHC section of permit. The data <br />in the hydrology reports support the PHC (probable hydrologic consequences) described in <br />the permit application, which are: <br />Pale 3 <br />a. No hydrologic impacts to Middle Creek. <br />b. No hydrologic impacts to Trout Creek. <br />14. Suitability of surface water for intended post-mining uses. Trout Creek is the only surface water <br />that could serve as a supply for the Apex Mine's planned post-mining land uses of livestock grazing <br />and wildlife habitat. There is no reason to believe water in Trout Creek is unsuitable for those uses. <br />15. Suitability of ground water for intended post-mining uses. The volume of alluvium in the permit <br />area probably is insufficient to store enough ground water for watering livestock or wildlife. Ground <br />water in bedrock aquifers probably has not been impacted by mining operations and therefore should <br />have the same utility as prior to mining. <br />16.. Off-site hydrologic impacts. Mining operations at Apex appear to have not caused an impact to the <br />quality or quantity of surface or ground water beyond the permit boundary. Manganese and dissolved <br />iron levels in future alluvial samples should be closely checked as a result of the 1.58mg/1 of <br />manganese and 2.39 mg/l of dissolved iron reported in the 1998 downstream alluvial samples (see <br />comment 10, above). <br />17. Need to update permittee's address. The reclamation reports show an address for Sunland Mining <br />Corporation that is different from the address currently in the permit on page 4a. If the address on the <br />reclamation reports is correct, then please submit a Minor Revision updating information to ensure <br />compliance with Section 2.03.4 of the Regulations. <br />Please let me know if you have any questions. <br />Sincerely, <br /> <br />Tom Kaldenbach <br />Environmental Protection Specialist <br />cc: Daniel I. Hernandez, CDMG <br />