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ATTACHMENT 2 Page 1/11 CITY OF SAN LEANDRO MEMORANDUM DATE: January 18, 1996 TO: Justin Murphy, Project Planner FROM: Gary Kruger, Transportation Administrator 6-"-r SUBJECT: Traffic Study Update - Marriott Residence Inn San Leandro I have updated the traffic study as recommended in the attachment to the Negative Declaration approved in Council Resolution 93-197. That attachment recommended an update of the traffic study to determine whether physical improvements at the intersection were required. The original traffic study was based on 1992 traffic counts while the Fairway overcrossing of 1-880 had not been constructed. New counts in 1995 after the Fairway overcrossing of I-880 was opened showed that the overcrossing drew significant traffic volumes away from Marina Boulevard at Doolittle. Specifically, the existing conditions at Marina and Doolittle show LOS C with a volume to capacity ratio (v/c) of only 0.61. Adding all of the trips generated by the proposed Residence Inn results in the v/c increasing to 0.67 with LOS C operations maintained. Adding in the cumulative traffic including Roberts Landing results in an increase of v/c to 0.70, but the intersection remains at LOS C. Traffic at the intersection could increase almost 50% before the intersection reaches capacity. Traffic projections made in the technical analysis for the update of the Master Plan of City Streets show that this magnitude of increase is not expected for over 15 years, if ever. At Fairway and Doolittle, the v/c is only 0.40, so Roberts Landing and the project impacts result in a v/c less than 0.50 with a LOS of B. The capacity work sheets are attached to this memo. I conducted my analysis by assuming that all of the traffic generated by the Marriott Residence Inn (122 rooms = 120 peak hour trips) would be routed through Marina and Doolittle, although it is obvious that some of the traffic would use Fairway and Wicks Boulevard to travel south. Further, I assumed that these 120 trips were all outbound. I also assumed that these 120 trips were also inbound at the same time, far overstating the likely project impacts on the intersection. The mitigation of traffic at this intersection is due to the opening of the Fairway overcrossing of I-880. My analysis shows no need for traffic mitigation due to the project. attachments gek cAbackup\memo.273 4'1