4_Exhibits A-C - Laserfiche WebLink

City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update Executive Summary Draft Program EIR ES-4 FirstCarbon Solutions https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/EIR/3 - Draft/21480022 Sec00-03 Executive Summary.docx present, and future projects, would have a cumulatively significant impact related to VMT. Development consistent with the Housing Element Update would result in a significant and unavoidable cumulatively considerable contribution to the existing cumulative VMT impact even with mitigation incorporated. Even with incorporation of MM TRANS-2, the City may not achieve the overall VMT threshold reduction level due to uncertainty in the cumulative effectiveness of the measures included in MM TRANS-2 as well as unknowns related to transit service levels, transportation technology, and travel behavior. Moreover, these policies and measures primarily apply to new developments; existing land uses that have already been approved and are under construction are generally not affected. Because of the programmatic nature of the Housing Element Update, no additional mitigation measures are available, and the cumulative impact is considered significant and unavoidable. • Project-Level Water Supply: With all the City’s groundwater supply wells potentially being taken out of commission in 2023, and unless the supply is either replaced or restored, there would be a significant projected water supply deficiency for all years reported in this Draft Program EIR. The deficiency ranges from approximately 12 percent to approximately 25 percent.1 Without the groundwater supply, there would not be enough water available to account for development consistent with the Housing Element Update unless alternative water supplies are identified, such as purchasing additional water from Zone 7, or the City pursues a groundwater wells rehabilitation project, which would allow it to resume use of local groundwater. Although Zone 7 has sufficient supplies available, because the City is still evaluating options for additional water and has not finalized additional supplies at time of publication of this Draft Program EIR, the potential water supply deficiency is considered significant for the purposes of this analysis. Therefore, although the analysis provided in this Draft Program EIR is conservative, decommissioning all of the City’s ground water supply wells would result in projected water supply that would not be sufficient to accommodate development consistent with the Housing Element Update and there is no mitigation available to reduce impacts to a less than significant level. Therefore, this impact would remain significant and unavoidable. • Cumulative Water Supply: With all the City’s groundwater supply wells potentially being taken out of commission in 2023, and unless the supply is either replaced or restored, there would be a significant projected water supply deficiency for all years reported in this Draft Program EIR. The cumulative deficiency ranges from approximately 12 percent to approximately 30 percent.2 Without the groundwater supply, there would not be enough water available to account for cumulative development. In addition, as discussed in the Water Supply Assessment (WSA), based on 2020 Urban Water Management Plan reported City water supply and demand values, the decommissioning of all City groundwater wells would create a 1 As discussed in Section 3.15, Utilities and Service Systems, the Housing Element Update is anticipated to result in a deficiency of approximately 12 to approximately 25 percent (see Table 3.15-8 in Section 3.15, Utilities and Service Systems), whereas the water demand for the Housing Element Update and the anticipated additional growth is anticipated to result in a deficiency of approximately 12 to 30 percent (see Table 3.15-10 in Section 3.15, Utilities and Service Systems). 2 As discussed in Section 3.15, Utilities and Service Systems, the Housing Element Update is anticipated to result in a deficiency of approximately 12 to approximately 25 percent (see Table 3.15-8 in Section 3.15, Utilities and Service Systems), whereas the water demand for the Housing Element Update and the anticipated additional growth is anticipated to result in a deficiency of approximately 12 to 30 percent (see Table 3.15-10 in Section 3.15, Utilities and Service Systems).