21 ATTACHMENT 06 - Laserfiche WebLink

thereby not impacting the weekday a.m./p.m. peak commute hours: 7:30 a.m. to 8:30 a.m. and 4:30 p.m. to 5:30 p.m., respectively. The traffic study factored "internal capture" and "pass-by" trips, which lowers the development's trip generation to the surrounding street system. After these trip reductions, the total number of trips generated by this development was calculated to be 327 a.m. trips and 242 p.m. trips. Intersections The Dowling report identified several intersections that require mitigation from the current "existing plus approved" roadway geometrics to maintain an acceptable level of service. Table 4 on page 17 of the Planning Commission staff report (Attachment 7), excerpted from the Dowling report (Table 3, pp. 9-10), identified the intersections operating at LOS "E" or "F" for the existing/approved/project traffic scenario. Of these intersections, the only intersection in the City which changes from an acceptable LOS to a congested LOS as a direct result of this project is the Bernal Avenue/Vineyard Avenue (N) intersection. The other congested intersections will operate at LOS "E" or "F" with/without the traffic generated by the proposed development. The City has identified mitigation measures for these intersections, which will be implemented in the future by the City or by project developers. The mitigation for the Bernal Avenue/Vineyard Avenue (N) intersection is a re-timing of the traffic signal since Home Depot's traffic using Bernal Avenue will require longer green times than are currently programmed at the intersection. The retiming of this intersection improves the LOS to "D". The traffic study also identified that the Bernal Avenue/Valley Avenue, by the Bernal Property, and the Sunol Boulevard/I-680 Northbound Ramps will operate at LOS "E" with/without the project. Table 5 on page 18 of the Planning Commission staff report (Attachment 7) describes the traffic that the Home Depot project will add to these intersections and the added delay. Both these intersections are being reviewed with the General Plan update for possible mitigations. Table 4 of the Planning Commission staff report referred to above also shows the Stanley Boulevard/Valley Avenue/Bernal Avenue intersection under "Existing Plus Approved" conditions without the project operating at Levels-of-Service (LOS) "F" (106.8 seconds delay) and "E" (68.6 seconds delay) for the a.m./p.m. peak hours, respectively. With the project, the level of service remains the same, but the delay times increase to 111.2 seconds delay in the a.m. peak hour and 74.5 seconds delay in the p.m. peak hour. Staff judged these traffic increases to the a.m./p.m. peak operating hours as significant, thereby requiring mitigation by the project developer. Several mitigations are required to return this intersection to an acceptable level of service. The project will change the existing eastbound right-turn lane to an eastbound through lane, continue the through-lane across the project frontage, and to re-construct the northbound free right turn lane. With these mitigations, the a.m. peak level of service is "D" with 45.1 seconds of delay and the p.m. peak-hour level of service is "D" with 44.5 seconds of delay. Ponderosa Homes is also required to construct a Page 10 of 22