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off site envsion and flo�ding impacts by rer�uiring submittal of�d�nce ta the <br /> City Engineer of Redwaod Gity that coverage nnder the statewide General <br /> Constructian Activities Starmwater Permit{Gexaerar Pe�mit}�as been obtsiae�l, <br /> which wilt shaw that the plans�ne in compliance wifih t�equirementa far' <br /> stbrmwater management,N1,itigation Measure Hydrology-b would requir� <br /> perFormance of hydrological calculations f�r pre-de�elop�n�nt aad post- <br /> deve�iapment peak discharge at downsiz�ea�n drainage facilities,which would <br /> provi�e informatian on whe�ther implpnentation of Mitigation Measure <br /> Hydrolagy-7 would be ae,cessary,bas�d on the caiculated ehange in flow. <br /> Mitigation Meas�re Hydrology-7 would require preparation of and submittal,to <br /> the Ci,ty Engineer of Redwood City for review and approval a plau ta mitigate <br /> inereases in peak discharge to lsss than 5 p�cent of preconstruction peak <br /> dischazge. Impact 3.7-4 and proposed mitigatinn ate described on Draf�EIR pages <br /> 3.7-14 and 3.7-15 and Rsvised FanaJ.E1R pages 4-21 through 4-23, which are <br /> hereby incorpora.ted by reference. <br /> Imp�ct 3.7� <br /> Impact: The projcct would ha�e the potential to substantially alter the existing drainags <br /> pa#tern of the site or area in a ynanner that wauId increase floodiug om site. <br /> Mitigatian: 1VYft�gation Measnre Hydrology-S: Drainage swales,bior�tention basin�,ofher <br /> drainage elem�nts, and conveyance infr�struchne aha11 be d�signed with <br /> capacities ta handle 100-year storm flows.As�art o�the Phase I consi�-uction <br /> plans submitted to the Bu�.lding and E�zg�ineering Divisions�or review and <br /> appravai,the applicant shall demonstrate that the propasai improvements would <br /> acco�nmodate 100-year storm flows. <br /> �ndfng: Implemeatation of Mi�igation Meaeure Hydrology-8 would reduce impacts from <br /> on-site flooding to a less tha�n significant level. <br /> Facts in Sapport of Finding: Impl�entation of Mitigation Measure Hydr�logy-8 would <br /> reduce impacts from on-site flooding by requiring the design af drainage swa�es, <br /> bioret�n.tion basins, nther drasnage elemsnts,and conveyance i�frastructure with <br /> capacities ta handle 100-year storm flows. Impa�t 3.7-5 ar�d proposed mitigation <br /> are descr�ibed on Draft EIR gages 3.7-!5,which is h�reby incorporated by <br /> reference. <br /> NOTSE <br /> Impsct 3.9-1 <br /> Impact: The�roposecl proje�would have ths potential to expose persons to or generate <br /> no�ise levels in excess of standards established in the loc�11 G��Plan or Noise <br /> Ordinance,or applicable standards af other agencies,through gene�ration ofnoise <br /> during coastruction of l�omes. <br /> 41 <br />