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PPP WQ-3: WQMP. As listed previously. <br />Impact Finding: The Project would not substantially alter the existing drainage pattern of the site <br />or area, including through the alteration of the course of a stream or river or through the addition <br />of impervious surfaces, in a manner which would create or contribute runoff water which would <br />exceed the capacity of existing or planned stormwater drainage systems or provide substantial <br />additional sources of polluted runoff (Draft Supplemental EIR at p. 5.7-16). <br />Facts in Support of Findings: <br />Construction <br />Implementation of the Project requires a SWPPP (included as PPP WQ-1) that would address site <br />specific pollutant and drainage issues related to construction of the Project and include BMPs to <br />eliminate the potential of polluted runoff and increased runoff during construction activities. This <br />includes regular monitoring and visual inspections during construction activities. Compliance with the <br />Construction General Permit and a SWPPP prepared by a QSD and implemented by a QSP (per <br />PPP WQ-1) as verified by the City through the construction permitting process would prevent <br />construction -related impacts related to increases in runoff and pollution from development activities. <br />Therefore, impacts would be less than significant. <br />As part of the permitting approval process, the proposed drainage design and engineering plans <br />would be reviewed by the City's Engineering Division to ensure that the proposed drainage would <br />accommodate the appropriate design flows. Additionally, the City permitting process would ensure <br />that the drainage system specifications adhere to the existing MS4 Permit and DAMP regulations, <br />which would ensure that pollutants are removed prior to discharge. Overall, with compliance to the <br />existing regulations as verified by the City's permitting process, Project impacts related to the <br />capacity of the drainage system and polluted runoff would be less than significant (Draft <br />Supplemental EIR at p. 5.7-16). <br />Operation <br />The Project would manage increased stormwater flow with vegetated biotreatment systems that <br />have been designed to accommodate the increased volume pursuant to the MS4 permit and DAMP <br />requirements. The units would retain, filter, treat, and slowly discharge runoff into the existing offsite <br />drain. Additionally, the City permitting process would ensure that the drainage system <br />accommodates new flows and that specifications adhere to the existing MS4 permit and DAMP <br />regulations, which would ensure that pollutants are removed prior to discharge. Overall, with <br />compliance to the existing regulations as verified by the City's permitting process, Project impacts <br />related to the capacity of the drainage system and polluted runoff would be less than significant <br />(Draft Supplemental EIR at p. 5.7-17). <br />Plans, Program and Policies: <br />PPP WQ-1: NPDES/SWPPP. As listed previously. <br />Impact Finding: The Project would not substantially alter the existing drainage pattern of the site <br />or area, including through the alteration of the course of a stream or river or through the addition <br />