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~~. <br />T RANS P~D RTATI OIV GROUP <br />Mazch 7, 2005 <br />Mr. Frank Roitsch, P.E. <br />Director, Hayden Station <br />Xcel Energy <br />13125 U.S. Highway 40 <br />Hayden, Colorado 81639 - -- <br />Re: Traffic Operations at the Twentymile Mine Access Road Intersection with RCR 27 <br />Dear Mr. Roitsch, <br />This letter is in response to a question raised by Routt County Planner John Eastman concerning <br />the operation of traffic at the intersection of the Twentymile Mine access road and RCR 27 with <br />increased coal truck activity during emergency coal hauling conditions. As you know, this <br />intersection was one of the ones included in our pievious study report (dated September 22, <br />2003). A weekday PM peak hour traffic count taken at this location documented the low <br />existing traffic volumes as follows (see also Figure 1 in the original study): <br />- southbound right toms from RCR 27 into the mine driveway 8 vph* <br />- southbound through traffic on RCR 27 13 vph <br />- northbound left turns from RCR 27 into the mine driveway 1 vph <br />- northbound through traffic on RCR 27 9 vph <br />- eastbound right toms from the driveway onto southbound RCR 27 4 vph <br />- eastbound left toms from the driveway onto northbound RCR 27 34 vph <br />_ - (likely employees existing the mine at the end of a shift) -~ -- ' - " <br />vph =vehicles per hour <br />- -~ - -I had also visited the site and noted that there is good-sight distance in both directions on RCR27 <br />for motorists exiting the mine driveway. <br />In my letter to you dated February 23, 2005, I had projected that the emergency coal haul <br />operation at the Twentymile Mine would generate 5 loads of coal per hour using 25 ton single <br />.'frailer trucks. This would add to the peak hour traffic at this intersection as follows: <br />additional southbound right toms into the mine driveway 5 vph <br />- additional eastbound left toms from the driveway onto RCR 27 5 vph <br />~: <br />