Admin Order 58-16-01 - Laserfiche WebLink

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IM FEM US Department of Honicland Sccurity Region X 13 0 228"' StrcTt, S -W Boiltell, WA 98071 Proceduresjbr "No -Rise" Cerfiftaution ForProposed Developments in the Regulatory r . Floodway Section 60.3 (d) (3) of the National Flood Insurance Program (NFIP) regulations states that a -community sliall "prohibit encroachments, including fill, new Construction, sub-mantial inipmwments and other developmentwit1iin the adopted regulatory floodway unless it has been demonstrated flinjugh hydrologic and hydrai-Alic imalyscs purfurmcd in accordance with standard cogineering practice that the proposed encroachment would not resultin arty increase in flood levels within the community during the occurrence ofthe base (1 00-ycar) flood discharge, Prior to issuing any building, gradinor development permits Involving activities in a regulatory floodway the community must obtain a ceriffleafion stating the proposed development will not impact the pre-pToject base flood elevations, flood%vay Ovations, or floodway data widths. The certification should be obtained from the applicant and IV signed and scaled ky a prolessional engin r. The engin"r[rig or most beLLor(QJ by t�ehiCkal data, The supporting technical data should be based upon hydraulic analyses that utilize the same model used to prepare the elleetive Hood lnsum"e Study (l'KS) report and Flood Insurance Rate Map (FIRM) unless it is dernonstrated that the 'effective' hydraulic model is unavadlahle or its use is inappropriate. Ifan alternative hydraulic model is used,, the new vacidel must be callibrawd to reproduce the FIS profiles within 0,5 feet..( (ydmulk model u -sed in the analysis must be on FEMA'sa"eptecl models list, or doeumen(ation most be provWedshokving the, model meets the requirements ofNMP regulation 65.6(aX6), October 2009 2016 PIDS Manual, Appendix B-5 B-5-1