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STATE OF <br /> u STATE DO Scott-DNR, Eric <eric.scott@state.co.us> <br /> COLO <br /> Swan River Habitat Restoration <br /> 2 messages <br /> Rudolph -CDPHE, Mark <mark.rudolph@state.co.us> Wed, Jul 20, 2016 at 5:49 PM <br /> To: "Lorch, 2930 Brian" <BrianL@co.summit.co.us>, "Graves, 2930 Jeff" <Jeff.Graves@state.co.us>, Eric Scott - DNR <br /> <eric.scott@state.co.us>, "Fagen, Elizabeth" <Fagen.Elizabeth@epa.gov> <br /> Brian, Sorry for the delay in getting back to you. I have been in and out of cell service let alone not having email. <br /> Based on our conversation, you all encountered significant tailings when cutting away along the Swan River area. These <br /> tailings are saturated and showed no indication of impacted water seepage nor has your water quality monitoring <br /> indicated any impacted reaches of stream in this area. In lieu of chasing the tailings which could be extensive, your <br /> proposal that was initially agreed upon by DRMS Active and Minerals program staff, seems sound. Leaving these <br /> tailings in place and placing an impermeable or semi impermeable cover over them and basing the realigned stream <br /> channel on top of this is the best alternative from the sound of it. Excavation of thse tailings could cause a significant <br /> impact to the stream during the construction and remobilized metals in the River as well as a significant savings of cost <br /> to the County. Please do not hesitate in calling or emailing with any questions <br /> thanks <br /> Mark <br /> Mark Rudolph <br /> Superfund, Brownfield's and Voluntary Cleanup <br /> Colorado Department of Public Health and Environment <br /> 4300 Cherry Creek Drive South <br /> Denver, Colorado 80246 <br /> mark.rudolph@state.co.us <br /> office-303-692-3311 <br /> fax -303-759-5355 <br /> cell -303-916-2179 <br /> Fagen, Elizabeth <Fagen.Elizabeth@epa.gov> Wed, Jul 27, 2016 at 11:57 AM <br /> To: "Rudolph -CDPHE, Mark" <mark.rudolph@state.co.us>, "Lorch, 2930 Brian" <BrianL@co.summit.co.us>, <br /> "jeff.graves@state.co.us" <jeff.graves@state.co.us>, Eric Scott - DNR<eric.scott@state.co.us> <br /> Hi all, <br /> I have reviewed river realignment and mitigation plan that Brian provided. I agree with Mark's comments below and <br /> see no issues with the proposed plan. Please keep us posted if there are any additional issues encountered. <br /> Thanks, <br /> Liz <br />