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7/15/2014 State.co.us Executive Branch Mail -Trapper Mine; C -1981 -010; PR7, Baseline hydrologyinformation; request for assistance <br />fy STATE OF <br />i It <br />COLORADO <br />Ebert - DNR, Jared <jared.ebert @state.co.us> Mon, Jul 14, 2014 at 3:36 PM <br />To: Leigh Simmons - DNR <leigh.simmons @state.co.us> <br />Cc: David Berry - DNR <david.berry @state.co.us >, Alysha Hernandez - DNR <alysha.hernandez @state.co.us >, <br />Mary Rodriguez - DNR <mary.rodriguez @state.co.us> <br />Mr. Simmons, <br />As we have discussed, we are in the review period for Permit Revisions No. 7 for the Trapper Mine (C- 1981 -010). <br />Trapper is expanding their permit boundary by about 780 acres to the east and south east portion of their current <br />permit area. At this time, Trapper is not proposing to mine within the expansion area. Given this, they are <br />required to submit baseline ground water quality information required by Rule 2.04.7(1)(a). Section 2.7.5 of <br />Trapper permit contains the current baseline hydrology information. The Division has requested that Trapper <br />submit the information required by Rule 2.04.7(1)(a) for the proposed expansion area. On July 8, 2014 Trapper <br />submitted a response to the Division's request. Their response includes additional pages to be added to Section <br />2.7.5 of their permit that are intended to address the Division's request. These revised pages are attached. <br />Updated Maps M54, M54B and M54C show the water elevations /potentiometric surface information. I have extra <br />copies of these maps that I will bring to you. Also, Trapper submitted water quality tables from the wells in <br />question. This information is also attached. <br />As we discussed, Trapper is using existing wells within their current permit area that are near to the expansion <br />area to supply /extrapolate information required by the rule. According to Trapper, the current <br />descriptions /information about the aquifers contained in the permit text in section 2.7.5 can be applied to the <br />permit expansion area. I would like to request your assistance in reviewing the newly submitted pages attach to <br />determine if the information submitted meets the requirement of the above referenced rule and if it is appropriate <br />to extrapolate information to characterize the aquifers from existing wells that are not located in the expansion <br />area. <br />am required to issue a proposed decision by July 31St, 2014. If I could have your comments by July 28th, that <br />would be most helpful. If I can be of further assistance please feel free to contact me. <br />Thanks, <br />Jared <br />Jared Ebert <br />https: / /mai l.g oog le.conVmai 1 /u /0 / ?ui =2 &i Ire29129fcb5 &viev�-- pt &search =i nbox&th= 14736ce5874e376f &si ml= 14736ce5874e376f 1/2 <br />