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City of Pleasanton—Villages at the Quarry Project Consistency Checklist 15183 Consistency Checklist 146 As detailed in the Preliminary Stormwater Control Plan (Appendix G), the proposed project is required to treat 100 percent of the runoff from impervious surfaces within the project site; this would be achieved by directing all runoff (i.e., roof, street, and driveway) to six proposed bioretention basins located throughout the project site.24 The Stormwater Control Plan describes the proposed Drainage Management Areas (DMAs) and associated treatment areas. Landscaping would include planting several trees, which would improve water quality by intercepting and storing rainfall on leaves and branch surfaces thereby reducing runoff volumes and delaying the onset of peak flows. In addition, the uptake of water from trees through transpiration would reduce the amount of runoff from the project site.25 The landscaping design would be required to meet State standards for water efficiency. Additionally, as discussed above, the proposed project must comply with NPDES permit requirements (NPDES Permit No. CAS612008 Order No. Rs-2022- 0018), the Municipal Code, the Alameda Countywide Clean Water Program, and General Plan goals, policies, and actions, which would ensure that impacts related to water quality degradation from construction activities are less than significant. Therefore, there are no environmental effects that are peculiar to the proposed project. The proposed project would not result in a new or more severe adverse impact that was not previously identified in the Housing Element Update FEIR. b) Groundwater Would the project: Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? Summary of Housing Element Update FEIR The Housing Element Update FEIR indicated that future development consistent with the Housing Element Update could increase the area of impervious surfaces, which could potentially reduce groundwater infiltration. The addition of new housing would also result in an increase in residential 24 Kimley-Horn Associates. 2023. Preliminary Stormwater Control Plan, Tract 8680 Villages at the Quarry. November 2023. 25 Ibid.