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7 Conclusions <br />The residential developments south of Nelson Siding Road proposed by the Terra Design <br />Group will add 23 net PM peak hour trips to the local road network. Because the traffic <br />volumes on the local roads are well below capacity, the level of service at the site access <br />point as well as other local intersections is forecasted to remain at or near LOS -A. The <br />County's standard for rural roads is LOS -C, so no improvements are necessary to mitigate <br />these impacts. <br />Access roads to the proposed residential lots will be required to be built according current <br />Mttitas County Road Standards, as cited in this report. This will include providing an <br />appropriate roadway surface and right-of-way and pavement widths, as well as meeting <br />standards for design speed, sight triangles and other factors. Traffic circulation within the <br />developments is to be consistent with guidelines outlined in the road standards and included <br />above. Where the Mttitas County Road Standards are not specific, the Mttitas County Code <br />refers to AASHTO and WSDOT design criteria. <br />MarionSpringtree Developments 13 June 2007 <br />Transportation Impact Analysis <br />