Laserfiche WebLink
Hydrology and Water Quality <br />1. Flooding and hydromodification (pp. 174-176, 177-178 and 367-368; <br />Condition 4-5, 71, 80-81, and 83 of PUD-33; MM/P H1a and H1b.). <br />a. Potentiallmpact. <br />Development of the Environmentally Superior Project could increase the amount of run- <br />off, potentially exacerbating existing downstream flooding problems and/ or causing <br />hydromodification impacts. <br />b. Mitigation Measures. <br />The following mitigation measures are hereby adopted and will be implemented as <br />provided for in the Mitigation Monitoring and Implementation Program: <br />• Implement Oak Grove Planned Unit Development (PUD-33) Mitigation Measures <br />H1a and H1b. <br />c. Findings. <br />Based on the EIR and the entire record before the City, the City finds that: <br />(i) Effects of Mitigation. <br />The Environmentally Superior Project's potential impacts due to the possible increase in <br />the amount of run-off will be mitigated to less-than-significant levels through the <br />implementation of the mitigation measures discussed above because the measures <br />require the demonstration, through detailed hydraulic analysis, that implementation of <br />the proposed drainage plans will not impact flooding conditions or create potential <br />hydromodification impacts downstream. Further, the Environmentally Superior Project, <br />as conditioned, contains requirements that the project developer and/or future building <br />developers shall complete the specific actions: <br />• To address the potential degradation of water quality in nearby surface water <br />bodies by urban stormwater runoff from construction activities and post- <br />construction land uses, the project developer, future building developers, and <br />homeowners shall comply with the Alameda Countywide NPDES C.3 Permit <br />#CA50029831 with respect to the treatment of runoff water, a copy of which is <br />available at the City offices. In addition to the Standard Urban stormwater <br />Runoff Requirements for compliance with the Alameda County NPDES Permit, <br />the project shall comply with the Permit's Hydro Modification requirements as <br />approved by the Regional Water Quality Control Board (RWQCB) for Alameda <br />County. <br />Page 34 of 45 <br />