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City of Pleasanton–Spotorno Ranch Reduced Development Project <br />Initial Study/Consistency Checklist Environmental Checklist <br /> <br /> <br />FirstCarbon Solutions 155 <br />https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480021/Consistency Checklist/21480021 Spotorno Ranch Consistency Checklist ScreenCheck.docx <br />Roadway Segment Operations <br />The 1998 HVSP FEIR described increases in the traffic volumes on nearby roadway segments but did <br />not identify any thresholds or impacts resulting from the implementation of the HVSP. No mitigation <br />measures were proposed. The 2018 TIA evaluated 11 roadway segments in the project vicinity; these <br />same segments were reevaluated for the Cumulative condition for the proposed project based on <br />the forecasts and methodology presented in the 2018 TIA, with the results summarized in Table 6, <br />below. For designated local residential roadway segments, average daily traffic volumes around <br />1,500 vehicles per day are considered the upper limit while volumes up to around 3,000 vehicles per <br />day are tolerated on designated residential collector streets. There are no standard daily roadway <br />volumes on residential streets in Pleasanton for either CEQA significance criteria or General Plan <br />thresholds. For this project, the amount of added traffic from the project was compared the to the <br />existing daily volume fluctuation as well as the upper capacity bounds noted above. Although the <br />addition of traffic from the proposed project would not result in any roadway in the project vicinity <br />to exceed the upper limit, the volume increase associated with the project would be most noticeable <br />on Happy Valley Road, Alisal Street, Riddell Street, Sycamore Road, and the portion of Sycamore <br />Creek Way between Sunol Boulevard and Sycamore Road. The proposed project would not result in <br />any peculiar effects and would not result in new or more severe impacts to roadway segment traffic <br />volumes beyond what was previously analyzed in the 1998 HVSP FEIR. <br />Table 6: Cumulative Weekday Daily Roadway Segment Volumes <br />Roadway Facility Type <br />Without <br />Project Daily <br />Traffic <br />Percent <br />Daily <br />Fluctuation <br />Cumulative With Project <br />Project <br />Traffic <br />With <br />Project <br />Percent <br />Increase <br />Happy Valley Road (east of <br />Pleasanton Sunol Road) Residential Collector 1,220 ±4% 60 1,280 5% <br />Riddell Street (south of <br />Sunol Boulevard) <br />Local Street 530 ±2% 20 550 4% <br />Arlington Drive (east of <br />Sunol Boulevard) <br />Local Street 1,320 ±4% 10 1,330 1% <br />Sycamore Creek Way (east <br />of Sunol Boulevard) <br />Residential Collector 4,210 ±5% 140 4,350 3% <br />Sycamore Road (east of <br />Sycamore Creek Way) <br />Residential Collector 1,890 ±6% 140 2,030 7% <br />Sycamore Creek Way (west <br />of Summit Creek Lane) <br />Residential Collector 1,770 ±7% 0 1,770 0% <br />Alisal Street (south of <br />Sycamore Road) <br />Residential Collector 1,250 ±8% 140 1,390 11% <br />Alisal Street (north of <br />Happy Valley Road) <br />Residential Collector 850 ±3% 70 920 8% <br />Happy Valley Road (west <br />of Alisal Street) <br />Residential Collector 790 ±1% 70 860 9%