2014-028 - Approving General Plan Amendement No. 2014-01

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City of Santa Ana -Park View at Town and Country Manor and Water Qualitv Draft EIR The Preliminary WQMP (contained in Appendix C) identifies Site Design BMPs that are intended to reduce long -term impacts to water quality. These BMPs are: 1) maximizing the permeable area on the project site by providing residential units in a multi -story tower, and having sidewalks and parking lot aisles constructed to the minimum widths allowable so that public safety and a walkable environment for pedestrians are not compromised; and 2) allowing the runoff from impermeable areas to drain into landscape swales for storage and treatment. In addition to Site Design BMPs to reduce water pollution during long -term use of the project site, the project would implement numerous routine Structural and Non - Structural BMPs. The routine Structural BMPs include measures such as: 1) storm drain system stenciling and signage (e.g. No Dumping - Drains to Ocean; 2) design and construction of trash and waste storage areas to reduce pollution introduction; and 3) efficient irrigation systems and landscape design. The routine Non - Structural BMPs include measures such as: 1) education for property owners, tenants, and occupants; 2) activity restrictions; 3) common area landscape management, litter control, and catch basin inspection; 4) employee training; 5) housekeeping of loading docks; and 6) driveway and parking lot sweeping. Treatment Control BMPs have been identified for the proposed project that would treat the runoff to remove pollutants before being released from the project site: 1) vegetated (grass) strips; 2) vegetated (grass) swales; 3) an underground infiltration trench to allow percolation of storm flows into the soil for treatment and removal of potential bacteria from runoff-, and 4) filters to address sediment, trash, debris, oil and grease. Because project design and operation includes BMPs to reduce long -term impacts associated with water quality, long -term operational impacts associated with this issue would be less than significant. Level of Significance Before Mitigation Less than significant. Mitigation Measures No mitigation measures required. Level of Significance After Mitigation Less than significant. Groundwater Supplies and Recharge Impact 4.3 -2 The project would not substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level (e.g., the production rate of pre- existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted. [CEQA Hydrology and Water Quality Threshold 8(b)] 4.3 -8 Michael Brandman Associates H\Cl t(PN -Rn) 327b327W3MME 3270030 Sec 3Hyd bUadWat Wity.d