Item 22 - Public Hearing Ordinance Second Reading - General Plan Amendment, Zoo Overflow Parking Rezone

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SANTA ANA REZONE PROJECT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION Would the project: a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality? Less than significant impact. The project would be undertaken in accordance with the Orange County Drainage Area Management Plan (DAMP) (Santa Ana Municipal Code § 18-156, Control of Urban Runoff). Prior to issuance of a grading or building permit for the project, applicable City agencies would review the project plans and impose terms, conditions, and requirements on the project, as needed. Additionally, the proposed project would be subject to compliance with Chapter 19, Article IV —Water Pollution of the City Municipal Code, which addresses compliance with the 2003 DAMP. Overall, the proposed project would be subject to compliance with the Orange County DAMP, which requires the preparation of a WQMP that specifies the proposed BMPs. The impact would be less than significant. b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? Less than significant impact. According to the City of Santa Ana 2020 Urban Water Management Plan (UWMP), the City receives water from the Lower Santa Ana River groundwater basin, which is managed by the Orange County Water District, and from imported water from the Metropolitan Water District of Southern California (Metropolitan). Groundwater is pumped from 20 active wells throughout the City. As discussed under Impact 18(b), the City anticipates having adequate water supplies through year 2040. Because of its nature, the proposed project would not require the use of groundwater. Thus, project implementation would result in a less than significant impact to groundwater supplies The project site is not located within a designated groundwater recharge basin or area identified as critical for groundwater replenishment. Accordingly, the proposed project would not interfere with groundwater recharge to a degree that would impede sustainable groundwater management of the basin. Additionally, the project site is currently used for parking and is heavily compacted due to daily vehicular use. As such it has a very low infiltration rate and does not represent a significant contribution to groundwater recharge. The proposed project would continue to route stormwater to existing drainage facilities and would comply with local stormwater management standards. For these reasons the proposed project would have a less than significant impact with respect to groundwater supplies and recharge. 68 FCS Https://adecinnovaticns.sharepoint.com/sites/PubiicationsSite/Shared Documents/Publications/Client(PN-JN)/0327/03270047/ISMND/03270047 Santa Ana Rezone Project ISMND.docx