75A - PH 3321 SOUTH FAIRVIEW ST - Laserfiche WebLink

Home Browse Search

SUMMARY • The proposed Alton Court residential development consists of 38single-family detached dwelling units ranging from 1,800 square feet to 2,200 squaze feet. Each unit will have three (3) bedrooms and a 2-caz garage. The project site is located on the southeast comer of Alton Avenue and Fairview Street in the City of Santa Ana. • Three area intersections were analyzed for existing traffic level of service. Based on the ICU methodology, all three study area intersections are currently operating at LOS B or better during both peak hours. Based on the HCM delay methodology, one intersection is operating at LOS D or better during both peak hour, one intersection is operating at LOS E during one peak hour, and one intersection is operating at LOS F during one peak hour. • Alton Court is estimated to generate 85 trips during the morning peak hour with 32 inbound and 53 outbound trips, and 40 trips during the evening peak hour with 29 inbound and 11 outbound trips. The three study area intersections were analyzed to determine the project's off-site traffic impacts. Based on the ICU methodology, all three intersections would continue to operate at LOS B or better during both peak hours with the traffic associated with Alton Court. Based on the HCM methodology, all three intersections would operate at the same LOS as under existing conditions, with no further degradation of LOS. • The project would not have significant traffic impacts at the three study azea intersections based on the city's impact criteria, thus, no mitigation measures are recommended. • The City of Santa Ana requires recommendations for improvements for any intersection that is shown to operate at LOS E or F during one or both peak hour, despite the project having a significant traffic impact or not. Optimizing the cycle length and green time splits would improve the Alton/Greenville and Alton/Raitt intersections to LOS D or better during both peak hours. • The recommendations to add a southbound left turn lane at Alton/Greenvilleanti add an eastbound left turn lane and a southbound left turn lane at Alton/Raitt would improve both intersections to LOS D or better during both peak hours. It should be noted that these improvements at both intersections may require the acquisition of additional right-of--way. • An option for improvement in the vicinity of the intersections of Alto~n/Crreenville and Alton/Raitt is in terms of management of school traffic operations. Methods that have been shown to ease the peak hour rush of school drop-off and pick-up traffic are to stagger starting and ending times based on grade level, implement formal carpooling programs, and to queue vehicles on school property instead of surrounding public streets. Traffic Analysis for - 17 - October, 2007 Alton Court Residential Development 75A-148