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Kelts, Diana <br /> From: Scott - DNR, Eric <eric.scott@state.co.us> <br /> Sent: Thursday, March 29, 2018 11:19 AM <br /> To: Kelts, Diana <br /> Subject: Re: Climax Mine Reagent Testing <br /> Diana, <br /> Thank you for the notification and information for the proposed reagent testing. I will add this information to <br /> the file. Please let me know when the testing is concluded, and of course, if Climax decides to implement <br /> process changes as a result. <br /> Eric Scott <br /> Environmental Protection Specialist, P.G., R.G. <br /> P 303.866.3567 x 8140 I F 303.832.8106 <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 <br /> eric.scottCstate.co.us I www.mininQ.state.co.us <br /> On Thu, Mar 29, 2018 at 11:00 AM, Kelts, Diana<dkelts(a,fini.com> wrote: <br /> Eric, <br /> As mentioned during our conversation earlier today, Climax Metallurgy would like to run a short test on two <br /> new reagents designed to depress other metals and clay particles in the flotation process. The reagents are NS <br /> 1162 and EXP 061117 from Neo-Solutions, Inc (see attached SDS's). The proposed dosing rate for these <br /> reagents are 50-100 g/ton for NS 1162 and 25-75 g/ton for EXP 061117. The test will occur during one run <br /> period which is typically 10 days. Both reagents will be stored in a 275 gallon tote and placed on a secondary <br /> containment pallet with in the mill building to provide tertiary containment. One tote of each reagent will be <br /> utilized for the test. In the event we see any issues with our process from the reagent testing, we will <br /> discontinue the test and dispose of the remaining chemical in accordance with waste regulations. We will <br /> update the EPP if we decide to make this change permanent. <br /> Please let me know if you have any concerns. We would like to begin the test as soon as possible. <br /> Thank you <br /> i <br />