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Too/Tq-K 76 <br /> STATE OF <br /> COLORADO <br /> Pics of New Trench from Lake to River-Speer <br /> Rob Laird <RobL@asphaltspecialties.com> Wed, Jul 2, 2014 at 10:38 AM <br /> To: "O'Donnell - DNR, Tyler (tyler.odonnelI@state.co.us)" <tyler.odonnelI@state.co.us> <br /> Tyler: <br /> Please see attached. They are numbered from 1 thru 4. <br /> 1. Head of new trench to the north of the trench/culvert that you viewed earlier in June. This from the lake edge. <br /> Note the visible lowering of the water in the trench from when it was first opened-up. <br /> 2. Outlet of new trench as it enters the Platte River. Note the flow at easily 500 gpm. If necessary, it looks as if <br /> the trench could even be lowered another 18 inches. I would have to check that against the average elevation of <br /> the river flow. <br /> 3. Photo of lake edge to north showing driftwood left high and dry due to rapid lowering of the lake earlier this <br /> month due to the new trench. At least 2 ft. of lowering. <br /> 4. Photo of downstream flow of the culvert under the haul road from the dewatering trench (temp French drain <br /> trench)from Brighton Rd. Note increase in flow and lowering of water elevation in trench. <br /> I have to assume that this evidence and these measures have lowered the mounded groundwater upgradient from <br /> our operation and has left the Kirby basement dry. Thanks for your attention to this matter. Rob <br /> Rob Laird, Resource Manager <br /> Asphalt Specialties Co., Inc. <br /> 10100 Dallas St., Henderson, CO 80640 <br /> Ph: 303.289.8555/Fax: 303.289.7707/Cel I: 303.994.2015 <br /> 4 attachments <br />