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Mr. Michael C. Refer Page 2 Febniary 2, 1999 <br />The McKay Road/Monaco Street route is an important two-lane north/south roadway connection <br />between 104th and 96th Avenues. A traffic signal is provided at 104th/McKay and speeds are <br />posted with a 35 mph limit. 100th Avenue near the site is a gravel two-lane, dead end street with <br />a Stop sign posted at Brighton Road. West of McKay, 100th is an east/west, two-lane route with <br />continuity west to Washington Street in Thornton. It is controlled by a west facing Stop sign at <br />McKay. <br />I-76, located just east of the site, is a key interstate freeway link which provides the site with <br />nearby regional access to the surrounding metropolitan azea. The nearby I-76 interchange at <br />96th is presently controlled by north/south Stop signs and direct connection between 1-76 and <br />US 85 is provided between 96th and 104th Avenues. <br />Estimated Traffic Generation <br />The generation of traffic by the proposed gravel mining facilities is unlike typical industrial land <br />uses. In particular, it will contribute no employee commuter peak-hour tralllc since hours of <br />operation (6:00 AM to 4:00 PM) fall outside the 7:00 to 9:00 AM and 4:30 to 6:30 commuter peak <br />periods. [n addition, peak season gravel truck activity is relatively uniform throughout a <br />maximum 16-hour haul activity day. <br />In general, the following peak season traffic generation activities are projected: <br />Gravel Trucks: A total of 800 round trips by gravel trucks over a 16-hour haul day is <br />projected. This level of activity equates to 50 entering and 50 exiting trucks per hour. <br />Overburden Material Trucks: A maximum of 20 trucks per hour is expected <br />(sporadically) with direct access to be either along Monaco/McKay south of 100th 4L <br />104th east of McKay. <br />I~~v /S rvi V hi I c: About 25 employees with a maximum on-site population <br />of 15 aze projected to generate as many as 75 daily vehicle-trips. As previously <br />indicated, none of these trips are projected during commuter peak periods. In addition, <br />service vehicle activity will be very minimal. <br />Estimated Traffic Distribution and Assignment <br />Based on CAMAS' estimates, the directional distribution of gravel truck traffic is expected to be <br />about 96 percent orientation towards the southwest via [-76 with the remainder equally <br />distributed towards the east and west along 104th Avenue. In addition, overburden material <br />trucks are projected to have about a 50/50 access distribution at one or the other possible access <br />points. <br />A review and preliminary analysis of potential gravel truck access through the 96th/Brighton <br />intersection concludes that projected southbound left-turn access from Brighton Road onto 96th <br />during commuter peak-hours will be significantly over capacity. The potential peak-hour haul <br />