2024-053 - Final Supplemental for The Related Bristol Specific Plan Project

Home Browse Search

Plans, Program and Policies: PPP WO-1: NPDES/SWPPP. As listed previously. PPP WO-3: WOMP. As listed previously. Impact Finding: The Project would not substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or offsite (Draft Supplemental EIR at p. 5.7- 15 ). Facts in Support of Findings: Construction Implementation of the Project requires a SWPPP (included as PPP WQ-1) that would address site specific drainage issues related to construction of the Project and include EMPs to eliminate the potential of flooding or alteration of a drainage pattern during construction activities. This includes regular monitoring and visual inspections during construction activities. Compliance with the Construction General Permit and a SWPPP prepared by a QSD and implemented by a QSP (per PPP WQ-1) as verified by the City through the construction permitting process would prevent construction -related impacts related to potential alteration of a drainage pattern or flooding on or offsite from development activities. Therefore, impacts would be less than significant (Draft Supplemental EIR at p. 5.7-15). Operation As described previously and detailed in Table 5.7-2 of the Draft Supplemental EIR, the proposed Project would result in a decrease of the 2-year, 24-hour storm runoff flowrate by 6.3 percent and the proposed Project would manage runoff with vegetated biotreatment systems that have been designed to accommodate the proposed Project design pursuant to the MS4 Permit and DAMP requirements. The units would filter, treat, and discharge runoff into the existing and upsized offsite storm drains. As part of the permitting approval process, the proposed drainage design and engineering plans would be reviewed by the City's Engineering Division to ensure that the proposed drainage would accommodate the appropriate design flows. Additionally, the City permitting process would ensure that the drainage system specifications adhere to the existing MS4 Permit and DAMP regulations, which would ensure that pollutants are removed prior to discharge. Overall, with compliance to the existing regulations as verified by the City's permitting process,. Project impacts related to the capacity of the drainage system and polluted runoff would be less than significant (Draft Supplemental EIR at pp. 5.7-15 through 5.7-16). Plans, Program and Policies: PPP WQ-1: NPDES/SWPPP. As listed previously.