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City of San Leandro 311 MacArthur Boulevard Residential Project 58 Significant Impact Less than Significant or Less than Significant with Mitigation Incorporated No Impact Analyzed in the Prior EIR e. Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? □ ■ □ □ Analysis in the General Plan EIR Impacts to hydrology and water quality were analyzed in Section 4.8 of the General Plan EIR. Impacts were determined to be less than significant with no mitigation measures required (City of San Leandro 2016b). The following describes the analysis included in the General Plan EIR and provides a streamlined review to determine whether there would be project-specific impacts that are either 1) peculiar to the project or the parcel on which the project is located; 2) were not previously analyzed in the General Plan EIR as significant effects; 3) are potentially significant off-site impacts and cumulative impacts that were not previously discussed in the General Plan EIR; or 4) are now determined to have a more severe impact than discussed in the General Plan EIR due to substantial new information. Project-Specific Impacts a. Would the project violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? The General Plan EIR found this impact to be less than significant with implementation of policies and actions included in the 2035 General Plan as well as state and local regulatory requirements. The project would involve grading over the entire site, which would disturb 1.0 acre of land. Therefore, the project would be required to comply with regulations established under the National Pollutant Discharge Elimination System (NPDES) program as part of Section 402 of the Clean Water Act to control both construction and operational stormwater discharges. In the Bay Area, the San Francisco Regional Water Quality Control Board administers the NPDES permitting program and is responsible for developing permitting requirements. Under the conditions of the permitting program, the applicant would be required to develop and implement a SWPPP for construction activities and perform inspections of the stormwater pollution prevention measures and control practices to ensure conformance with the site SWPPP. The SWPPP must include BMPs specific to project construction and is subject to inspections by a Qualified Stormwater Professional. BMPs aim to control degradation of surface water by preventing soil erosion or pollution discharge from the project site. The project would be required to adhere to Provision C.3 (New Development and Redevelopment) of the Municipal Regional Stormwater NPDES Permit, which applies to redevelopment projects that create and/or replace at least 5,000 square feet of impervious surfaces. The C.3 requirements are separate from, and in addition to, requirements for erosion and sediment control and for pollution