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City of Santa Ana -Park View at Town and Country Manor <br />and Traffic Draft EIR <br />western edge of the project site. OCTA requests that a standard size turnout be created in <br />conjunction with the project and that OCTA be allowed to review preliminary plans in order <br />to plot the exact location of the turnout. <br />4) Airport Land Use Commission for Orange County, indicating that, although the project site <br />lies outside the Noise Impact Zones, Clear Zone, and Height Restriction Zone for John <br />Wayne Airport, if building height is more than 200 feet above ground, the project must file <br />with the Federal Aviation Administration (FAA). The 8 -story project structure is 123 feet in <br />height, and will not require filing with the FAA. <br />All comments included in the NOP comment letters are addressed in the discussion and analyses <br />contained within this section of the Draft FIR. <br />4.6.2 - Existing Conditions <br />Methodology <br />Signalized Intersections - Intersection Capacity Utilization (ICU) Methodology <br />In accordance with the City of Santa Ana and the County of Orange Congestion Management <br />Program (CMP) requirements, peak hour operating conditions at the City - operated signalized <br />intersections were evaluated using the Intersection Capacity Utilization (ICU) methodology. The <br />ICU methodology provides a comparison of the theoretical hourly vehicular capacity of an <br />intersection to the number of vehicles actually passing through that intersection during a given hour. <br />Based on the City of Santa Ana analysis criteria, the ICU calculation assumes a per -lane capacity of <br />1,700 vehicles per hour (vph) for each through travel lane and 1,600 for turning lanes through a non- <br />CMP intersection. At CMP intersections, a capacity of 1,700 vph is used for all lanes. A clearance <br />factor of 0.05 (5 percent) of the total intersection capacity is included in the ICU calculation, to <br />account for the effect of the red and yellow signal phases at a signalized intersection. <br />The ICU calculation generates a volume -to- capacity (V /C) ratio that translates into a corresponding <br />Level of Service (LOS) measure, ranging from LOS A, representing uncongested, free- flowing <br />conditions, to LOS F, representing over - capacity conditions. A summary description of each Level of <br />Service and the corresponding V/C ratio is provided below in Table 4.6 -1. <br />Table 4.6 -1: Level of Service Descriptions for Signalized Intersections - ICU Methodology <br />of I ICU valullL� Description <br />A 0.00-0.60 Excellent operation. All approaches to the intersection appear quite open, <br />turning movements are easily made, and nearly all drivers find freedom of <br />operation. <br />4.6 -2 Michael Brandman Associates <br />H\Cl t(PN- Rnb327b32]0030DEai 3270030 Sec01 Tmspo md¢ <br />