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AD SYSTEMS EXPANSION EVERETT,WA <br /> CONVEYANCE SYSTEM ANALYSIS AND DESIGN <br /> A full conveyance system analysis has been performed using the Autodesk® Storm &Sanitary Analysis. <br /> The 100-year storm event(3.25" in 24-hours) has been used in sizing the conveyance system per 5.4.1 City <br /> of Everett Stormwater Management Manual. No catch basin overtopping is shown per the analysis, see <br /> Appendix B. <br /> 100-YEAR FLOOD/OVERFLOW CONDITION <br /> The stormwater conveyance system for this project has been designed to address storm events in <br /> accordance with common industry practices. In the event of a larger storm, the system may fail. In this <br /> case, the runoff from larger events will overflow and continue to flow to the intended discharge point at <br /> each basin. <br /> NOVEMBER 20, 2017 STORMWATER DRAINAGE SUMMARY PAGE 9 <br />