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1/19/2016 <br />State.co.us Executive Branch Mail - Fwd: Excess sediment source <br />is . 0 <br />STATE OF Hernandez - DNR, Alysha <alysha.hernandez@state.co.us> <br />COLORADO <br />Fwd: Excess sediment source <br />1 message <br />Zuber - DNR, Rob <rob.zuber@state.co.us> Thu, Jan 14, 2016 at 7:42 AM <br />To: Alysha Hernandez - DNR <alysha.hernandez@state.co.us>, Jim Stark - DNR <Jim.Stark@state.co.us> <br />Please file in Laserfiche under Southfield. General Documents, General Correspondence. From W.D. Corley. <br />Rob Zuber, P.E. <br />Environmental Protection Specialist II <br />Coal Regulatory Program <br />COLORADO <br />A&VDivision of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />P 303.866.3567, extension 8113 1 F 303.832.8106 <br />1313 Sherman Street, Room 215, Denver, CO 80203 <br />rob.zuber@state.co.us I http://mining. state. co. us <br />Forwarded message <br />From: Doug <ajjc@att. net> <br />Date: Wed, Jan 13, 2016 at 6:44 PM <br />Subject: Excess sediment source <br />To: Rob Zuber - DNR <rob.zuber@state.co.us> <br />Rob, <br />I have written recently about the unexpected amount of sediment that has been deposited in Pond 5 since 2011 <br />and that I believe the source of this sediment is from the bare area of the road cut along the north side of the <br />haul road from its junction with County Road 92 up to the perimeter road of the refuse disposal area. I have not <br />surveyed this bare area since it is on the Vento property, but utilizing contour maps and satellite photos it is <br />approximately one acre when measured on the slope. Particularly since this area has zero vegetation cover and <br />since it is a very significant sized area, I believe that there should be addition investigation about its contribution <br />to the sediment runoff. I believe that this haul road is not a historical road, but it was constructed by Dorchester <br />at the beginning of the mine. <br />Doug Corley <br />https:Hm ai l.google.com/mai I/u/0/?ui=2&i k=e29129fcb%view=pt&search=i nbox&th=152409696f7d9dc1 &si m l=152409696f7d9dc1 1/1 <br />