RES 01063 - Laserfiche WebLink

~ of the di~tn'butiorual changes of traffic with the ctl&uge of use, it is not a simple matter to de~cribe th~ traffic effects of th~ change. Total traffic at the site would clearly increase in the AM ~ Coy about 43 trips) and decrease in the PM (about 64 trips). Traffic at the most conlgsted City iniersecfion would likely marginally increase: 8 nips (6.5%) on the 1-580 WI3 ramp 11 ~ (0.'/%) a~mcl 8 u'ips ~'M (0.3%) at critical movements at the 1-580 EB off-ramp 5 nips l~lVi (0.6%) at critical movements at Hopyard-Owens The~ volum~ a~ so small in comparison to existing and projected traffic volumes that they do not affect r. aloulated LOS. The study shows that, ~=~s,_ ,ming the W. Las Positas interchange is built, all intersections will operate at LOS D or better with planned/funded improvements. Following the Hacienda PUD reguJatioos, this project may be approved since the traff~c requirements are met, with the W. Las Positas imerchange in place. (The Stoneridge Drive intersections leading up to and inclutiing the !-6{0 ramps were not included in the study due to the low volume of traffic projected onto Stoneridge Drive; these levels would not affect any of these intersections' LOS.) Not~ that the NB to WB 1-580 loop ramp is projected to exceed its capacity. The office use adds margizmlly to this congested movement. Note also, however, that the operation of the loop ramps are not included in the Hacienda requirements for maintaining LOS D or beuer. To approve this project, the Commission must require this site to participate in the construction of the W. Las Positas interchange (or its alternative improvements if substituted by the City following the completion of the W. Las Positas interchange study). A condition of approval has been included to this effect. Allowing additional development within the total development cap has raised an issue with how the City models "build-out" and how future traffic from this growth can be accommodated. Several years ago no "redevelopment/expansion" use of the total development cap was ass-med. However, as described above, about 400,000 square feet could be built under the ' Hacienda regulations, assuming traffic levels of service can be met. The 'Build-out" scenario included in the traffic study does not include any of this unused development cap potential. As' shown in Table IV, unsatisfactory levels of service are reached at the 1-580 freeway inter~ectio~s on t{opyard ]~nad at I-Iopyard/Owens. No mitigation measures have been approved to achieve satisfactory levels of service at these as yet. Adding additional Hacienda developmeltt would add another .500+ trips to the build-out projections, further adding to the most congested movements if developed as office uses. The build-out projections are important to show future trends and allow adjustments to land use entitlements and/or implementation of new traffic improvements. The incremental traffic study Case No. PUDD-81-$O-84D Page 8