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STATE OF co O ADD Kaldenbach - DNR, Tom <tom.kaldenbach @state.co.us> <br />06� <br />Mineral Mountain Project M2014 -045 <br />1 message <br />Art Braun <braunenv @msn.com> Tue, Nov 18, 2014 at 6:06 PM <br />To: "Cazier - DNR, Tim" <tim.cazier @state.co.us >, tom.kaldenbach @state.co.us <br />Cc: (barker @aumining.net <br />Tim, <br />Thank you and Tom for your time this morning. I think we got to resolution for all of your <br />specific comments. However, the 110(d) designation still sticks in my craw. I carefully re- <br />read Rule 1.1(14) and copy the following: <br />(14) — Designated Mining Operationll means a mining operation at which: <br />(a) designated chemicals used in metallurgical processing are present on -site; or <br />(b) toxic or acid - forming materials will be exposed or disturbed as a result of mining <br />operations; or <br />(c) acid mine drainage occurs or has the potential to occur due to mining or <br />reclamation activities; or <br />(d) uranium is developed or extracted, either by in situ leach mining methods or by <br />conventional underground or open mining techniques. <br />(e) The various types of Designated Mining Operations are identified in Section 34- <br />32- 112.5, C.R.S. 1984, as amended. Except as to uranium mining operations, <br />designated mining operations exclude operations that do not use toxic or acidic <br />chemicals in processing for purposes of extractive metallurgy and will not cause acid <br />mine drainage. Any designated mining operation, including uranium designated <br />mining operations, may seek exemptions from this status pursuant to Rule 7. <br />A quick review of this site with respect to the definition produces the following. At this time, <br />the operation uses no designated chemicals nor do I see them being used in the near <br />future. The site has been historically worked (as has been the rest of the Cripple Creek <br />district) and shows no evidence of any acid producing issues, in surface waters, in <br />groundwaters, or in soils as evidenced by lack of any distressed vegetation. While there is <br />potential for any piece of property in the country to be acid generating, including that house <br />in Lakewood where the people set up the meth lab, I see little real evidence of any <br />scenarios that could cause sufficient acid to be generated at this site that would lead to any <br />negative environmental conditions. To my knowledge, no groundwater has ever been <br />reached at the Mineral Mountain property, and there is no evidence that the mine will ever <br />