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<br />Marian Meadows Rezone and Subdivision Final Environmental Impact Statement 3-67 <br />13 How would the proposal and alternatives change how the future transportation <br />system functions? <br />This section describes how the 226 lot subdivision and 443 lot PUD would affect how well the <br />transportation system functions relative to the No Build Alternative. Other alternatives are not analyzed <br />in detail because the trip generation of Alternative 1 is greater than all other alternatives and therefore <br />provides a “worst-case” analysis. <br />14 Would the roadways that serve the area change in the future? <br />No changes are contemplated in the circulation system in the area that uses Sparks Road as the single road <br />providing access to and across I-90. The desirability of additional roadways is discussed in the fire <br />impact analysis in subsection 3.4.2. <br />All project roadways are required to be designed to County standards. Roadway grades are especially <br />applicable to the project because steep grades can reduce the response times for fire trucks and emergency <br />medical service (EMS) vehicles. Similarly, the County in coordination with the local EMS providers may <br />prohibit certain circulation configurations, such as cul-de-sacs, which can be problematic for oversized <br />EMS vehicles. <br />15 What changes to future level of service conditions are expected? <br />The new trips generated from the project would increase the traffic volumes on the transportation network <br />and would change the LOS conditions. Accounting for the land use development assumptions and traffic <br />volume forecasts described under Question 5 above, the 2020 future year LOS conditions for the No <br />Build and Alternative 1 were analyzed. The results are summarized and compared to the existing <br />conditions in Table 3-8. PM peak hour volumes for the No Build and Alternative 1, Tenure Scenario 1, <br />are shown in Figures 3-10 to 3-12. <br />As shown in Table 3-8, the study intersections are expected to experience relatively small increases in <br />delay in 2020, even with the worst-case Alternative 1, Tenure Scenario 1with buildout of the proposed <br />443 units with all full-time residents. All of the study intersections would continue to operate better than <br />the LOS C standard. Other alternatives and tenure options would have lower trip generation. Occasional <br />peak traffic with other alternatives involving seasonal recreational use may approximate these levels at <br />peak weekends. <br />16 How would collisions and/or hazardous roadway conditions change in the future? <br />The collision history described under Question 3 above indicated that the frequency of collisions and <br />presence of hazardous roadway conditions are currently not problematic. Although the number of <br />collisions over the last 3 years is low (three collisions from 2005 to 2007), no trends were apparent.