SUPPLEMENTAL MATERIALS - Laserfiche WebLink

Mike Tassano January 31, 2025 Page 2 of 37 A traffic operations sensitivity assessment was conducted to evaluate the effects of four land use development projects proposed in the study area and currently under consideration by the city. This assessment found that the developments with the largest potential impact on the study intersections traffic operations are the “Kiewit” and “Senior Residential” projects. The impact of these developments on average intersection delay is about double the other two land use developments (Arroyo Lago and Amazon). The analysis of the effects of a partial extension of El Charro Road between Stoneridge Drive and Busch Road found smaller benefits than a full extension, resulting in about half of the average delay reduction. Under this scenario, no new intersections would operate under unacceptable conditions, but the extension would increase traffic along Busch Road, making traffic operations along that segment approach unacceptable levels of service. Finally, an extension of El Charro Road as only a two-lane roadway would also result in about half of the average delay reduction compared to the four-lane extension, with intersections such as El Charro Road at Stanley Boulevard and El Charro Road at Stoneridge Boulevard reaching unacceptable LOS conditions and resulting in major travel time delays along El Charro Road compared to the four-lane roadway alternative. Findings The main findings of this assessment are as follows: • Is the El Charro Road Extension needed? – The analysis finds that the extension of El Charro Road offers significant benefits to parallel infrastructure facilities, particularly Santa Rita Road, and is needed to support future development in east Pleasanton. • When is the El Charro Road Extension needed? – The study’s sensitivity analysis suggests the extension is desirable in the near-term with the development of all approved projects and the planned Kiewit development. Violations of the city’s LOS policies at critical intersections, including Valley Avenue and Santa Rita Road, would occur without the extension. • Should the El Charro Road Extension have its southern terminus at Busch Road or Stanley Boulevard? – It is recommended that the facility’s southern terminus occur at Stanley Boulevard. Terminating the facility at Busch Road would provide substantially fewer transportation benefits. • Should the El Charro Road Extension be a four-lane or two-lane roadway? – The study’s travel demand forecasts show that the extension should be implemented as a four-lane facility. A two-lane roadway would result in additional violations of the city’s LOS policies, serve lower volumes of traffic, and provide smaller transportation benefits.