3_Exhibit C_ADDENDUM ONLY - Laserfiche WebLink

City of Pleasanton—Stoneridge Mall Residential Project Section 15183 Checklist/15164 Addendum CEQA Checklist FirstCarbon Solutions 127 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480017/Consistency Checklist/21480017 Stoneridge Mall Residential Project Checklist Addendum_Updated.docx specific guidelines or requirements identified by the City’s operations services director.63 These bioretention areas would provide an opportunity to treat areas where runoff can collect some of the worst pollutants in high concentrations, such as parking lots and roads (Exhibit 9). Therefore, impacts would continue to be less than significant, and no mitigation is necessary, consistent with the Prior EIR. There are no proposed changes, new circumstances, or new information that would cause new or more severe impacts. Therefore, there are no environmental effects that are peculiar to the proposed project or the parcels on which the proposed project would be located. Impacts would be less than significant and the proposed project would not result in a new or more severe adverse impact that was not previously identified in the Prior EIR. b) Groundwater Prior EIR Conclusions The Prior EIR concluded that the development of residences in Pleasanton would increase the area of impervious surfaces, which would potentially reduce groundwater infiltration Such development is subject to, and will comply with, the Alameda Countywide Clean Water Program and City’s Municipal Code Ch. 9.14 Stormwater Management and Discharge Control requirements. It was determined that the addition of new housing would also result in an increase in residential connections to the municipal water supply, which could potentially increase demand on groundwater supplies. However, the Prior EIR recognized that the Housing Element includes policies and programs to protect water supplies and to ensure a sustainable water service, such as Program 44.1, which requires various water conservation strategies. Additionally, the City requires applicants to confirm with the water provider that Zone 7 will serve the project in MM 4.L-2 as a standard condition of approval. Therefore, with the inclusion of these programs, the Prior EIR concluded that buildout of the Housing Element would have a less than significant impact on groundwater quality. Analysis of Proposed Project The project site currently contains 239,773 square feet of impervious surfaces consisting entirely of paved areas and parking. The proposed project would reduce the amount of impervious surfaces to 220,438 square feet through the inclusion of bioretention areas and other landscaped areas. Therefore, the proposed project would not have a significant effect on groundwater recharge, and could even increase groundwater infiltration at the project site, thereby not impacting groundwater quality. Furthermore, the project site’s multiple bioretention and public outdoor space areas would allow for continued stormwater percolation. Therefore, there are no environmental effects that are peculiar to the proposed project or the parcels on which the proposed project would be located. Impacts to groundwater quality would be 63 City of Pleasanton. 2022. Pleasanton Municipal Code, Chapter 9.14.080. Website: https://library.qcode.us/lib/pleasanton_ca/pub/municipal_code/item/title_9-chapter_9_14-9_14_080? Accessed November 21, 2022.