21 ATTACHMENT 08 - Laserfiche WebLink

Dowling Associates, Inc. i~ Transportation Engineering • Planning • Research • Education "'~ Mitigation Measures As described in the Methodology section, intersection operations were analyzed to determine if any mitigation measures would be needed to maintain acceptable peak hour levels of service at the study intersections for the Existing+Approved+Project condition. The acceptable level of service is based on the City of Pleasanton's standard, which is LOS D in most cases (some exemptions exist). The majority of the mitigation measures were developed by the City of Pleasanton. These mitigations relate to mitigation assumptions developed for the General Plan Update Alternative B (refer to detailed text in the Appendix), as well as those identified in other recent traffic analyses for other developments in the City. Of the 45 intersections studied, the proposed project-would significantly change the level of service at Bernal & Vineyard (intersection 10). The project would also add trips to the study intersections that would already be operating at unacceptable levels of service under Existing+Approved conditions. The mitigation measures for the Existing+Approved+Project Without Loop Road conditions are ji,~, summarized in Table 6. The LOS results with the implementation of these mitigation measures are shown in Table 7. After implementation of these mitigation measures, the following intersections would still operate below the City's standard: (9) Bernal & Valley (LOS E in PM) (33) Sunol & I-680 NB Rarnps (L.OS F in both AM and PM) The City may identify additional mitigations for these intersections as part of the ongoing General Plan Update process, and may also create new LOS exemptions for some of these intersections as intentionally constrained City gateways. The mitigation measures for the Existing+Approved+Project With Loop Road conditions are summarized in Table 8. These mitigations are the same as those for the Without Loop Road alternative, and also includes mitigation for the intersection of Stanley & Home Depot east driveway/Loop Road (intersection 4~). The LOS results with the implementation of these mitigation measures are shown in Table 9. After implementation of these mitigation measures, 1 the same two intersections identified abive would still operate below the City's standard: (9) Bernal & Valley (LOS E in PM) (33) Sunol & I-680 NB Ramps (LOS F in both AM and PM) Again, the City may identify additional mitigations for these intersections as part of the ongoing General Plan Update process, and may also create new LOS exemptions for some of these intersections as intentionally constrained City gateways. Traffic Analysis Page 18 Home Depot Shopping Center, Pleasanton