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City of Santa Ana -Park View at Town and Country Manor <br />and Traffic Draft EIR <br />Study Roadway Segments <br />• La Veta Avenue: between Main Street and the SR -22 WB Ramps <br />• La Vera Avenue: between the SR -22 WB Ramps and Glassell Street <br />• Town and Country Road: between Main Street and the SR -22 EB Ramps <br />• Town and Country Road: between the SR -22 EB Ramps and Memory Lane <br />• Memory Lane: between Main Street and Lawson Way <br />• Memory Lane: between Lawson Way and Town and Country Road <br />• Main Street: between La Vera Avenue and Town and Country Road <br />• Main Street: between Town and Country Road and Memory Lane <br />• Lawson Way: between Town and Country Road and Memory Lane <br />• Parker Street: between La Vera Avenue and Town and Country Road <br />Analysis of State Highway Facilities <br />Freeway Mainline Analysis Methodology <br />Analysis of freeway mainline segments in the vicinity of the project was conducted in accordance <br />with the Caltrans Guide for the Preparation of Traffic Impact Studies, which specifies application of <br />the HCM methodology for freeway analysis. Freeway analysis results are expressed in terms of <br />density, which measures the number of passenger cars per lane mile (pc /mi/In) on the freeway <br />mainline. The target Level of Service (LOS) for freeway mainline segments is the transition between <br />LOS C and LOS D, which is a density of 35 pc /mi/ln. If the existing density exceeds the target LOS, <br />the existing Level of Service is to be maintained. <br />Freeway Mainline Analysis <br />Kimley -Horn and Associates, Inc. (KHA), the project traffic consultant, conducted a freeway <br />mainline analysis on the Garden Grove (SR -22) Freeway between the I- 5/SR -57 interchange and <br />Glassell Street. Peak hour freeway volumes were obtained from the Caltrans website and represent <br />Year 2007 traffic volumes (the most recent data available). A conservative growth factor of <br />1.0 percent per year was applied to 2007 traffic volumes to derive Opening Year 2013 and Buildout <br />2030 traffic volumes. Freeway analyses were conducted using the HCS+ software, operational <br />methodology. The results of the analysis are expressed in terms of vehicular density in each peak <br />hour, in each direction, as discussed in the preceding paragraph. <br />Ramp Queuing Analysis Methodology <br />Analysis of queuing at the freeway off -ramps was conducted to determine whether the project would <br />result in an excess queue on the off -ramp such that it would impact freeway operations. Queuing <br />analysis results are expressed in terms of the length of the queue on the off -ramp, measured in feet per <br />lane. The results are reported for the 85th percentile queue. The 85th percentile queue means that <br />85 percent of the time, the queue would be the length of the 85th percentile queue or less. Explained <br />another way, 15 percent of the time, the queue length could exceed that number. Default vehicle <br />length for queuing analysis is 25 feet per vehicle. <br />4.6 -6 Michael Bmndman Associates <br />H\Cl t(PN- Rnb327b32]0030DEai 3270030 Sec01 Tmspo md¢ <br />