RDA Reso 2000-004 - Laserfiche WebLink

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u • PROJECT ACCESS, INTERNAL CIRCULATION AND PARKING Project Access Local access to the proposed project would be via two driveways on San Leandro Boulevard (SLB) and afull-access driveway on Carpentier Street. It was determined that as one-way STOP controlled intersections at both the northern and southern SLB driveways, outbound left turns would experience delays over two minutes, resulting in LOS F for these movements. In order for the southern SLB project driveway to operate at acceptable service levels, it is recommended that this intersection restrict left turns out. .With this restriction, this intersection is expected to operate at LOS A. As a result, all left turns out would need to use the northern driveway where the installation of a signal would facilitate this movement. The northern driveway may be more suitable for signalization than the southern driveway since it is farther from the existing signalized intersection of Davis Street/SLB. Due to the limited width on the "bridge" over San Leandro Creek, space near the northern SLB driveway, it was assumed that a southbound left turn lane could not be accommodated on SLB at the northern SLB driveway. Therefore, all project traffic should use the existing southbound left-turn at the southern SLB driveway. It was estimated that approximately 12 vehicles originating from the north would turn left onto the project site from SLB during the a.m. peak hour. Although a signal is not warranted at the northern SLB driveway under all Scenarios analyzed, the signal will greatly reduce the delay (to about half a minute) for the left-turn movement exiting the project site. Without the signal, this left-turn movement will operate at LOS F. The project will have afull-access driveway from at Carpentier Street. As described under the Existing plus Project Scenario, the project will create a need for aright-turn lane on the southbound Carpentier Street approach to Davis Street. Therefore, the site should be designed to provide for this right-turn lane, which should be at least 50-feet long. Internal Circulation The provision of multiple access points is intended to reduce vehicle traffic within the project site and avoid a single entry with large traffic volumes. In general, the proposed site plan provides for adequate vehicular circulation. Given the proposed layout, it is appropriate to have two driveways on SLB and one on Carpentier Street. Parking The Institute of Transportation Engineers Parking Generation gives an average parking demand of 2.79 parking spaces per 1,000 s.f. of leasable area on weekdays for general office uses. Hence, for 180,000 square feet, 503 parking spaces would be required. The applicant proposes to provide 738 parking stalls (at a rate of 4.1 parking spaces per 1,000 s.f.), of which 503 parking spaces would be contained within the proposed parking structure. The remaining 235 parking spaces would be at- grade. Thus, the provision of parking for the facility appears more than adequate. fan Leandro Creekside Plaza Business Park Traffic Study Page 18 TJKM Transportation Consultants October 26, 1999