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, <br /> � Pacific Topsoils Riverside site�torm Drainage Report <br /> GFK ConsuMing Inc. <br /> CONTENTS <br /> O EXECUTIVE SUMMARY........................................................... 2 <br /> 1 DRAINAGE SUMMI�RY FORM.................,...............................3 <br /> 2 INTRODUCTION .......................................................................4 <br /> 3 OFFSITE RUNOFF....................................................................4 <br /> 4 DESIGN OVERVIEW AND STANDARDS ................................. 5 <br /> 4.1 Existinp sR�map........................................................................................................................6 <br /> 4.2 Dsveloped site map...................................................................................................................7 <br /> 5 Stormwater water quality system design............................... 8 <br /> 5.1 Bio Sw�l�dosipn........................................................................................................................8 <br /> 5.2 OnsRe Conv�yanc�Capecity..................................................................................................9 <br /> 6 EROSION RISK ASSESMENT AND ABATEMENT................ 12 <br /> s.1 slooe............................................................................................................................................ 12 <br /> 6.2 CriL'cal areas...............................................................................................................................12 <br /> 6.3 Soils.......................................................... ...................................................................................12 <br /> S.4 Ground movement................................ .....................................................................................12 <br /> 6.5 Sources o(erosive waters......................................................................................................... 12 <br /> 6.6 Measures proposed ro minimize erosion.................................................................................12 <br /> 6.7 Naarest downstream water 6ody..............................................................................................12 <br /> 6.8 Nearest fish bearing waters......................................................................................................12 <br /> 6.9 Conclusion...................................................................................................................................12 <br /> 7 UPSTREAM ANALYS�S.......................................................... 12 <br /> 8 DOWNSTREAM ANALYSIS.................................................... 12 <br /> 9 APPENDIX .............................................................................. 13 <br /> 9.1 Scfls Map....................................................................................................................................13 <br /> 9.2 WWHM30utput.. .....................................................................................................................i6 <br /> 9.2.1 Enfire site.............................................................................................................................tb <br /> 9.2.2 Paved basin onty.................................................................................................................20 <br /> 9.2.3 1NWHM3 50°�of paved basin..........................................................................................23 <br /> 9.3 SBUH basin calculations(entire basin)..............................................................................27 <br /> � ' � <br /> BI10/2010 � � <br /> C:1Project daNa\Project files\PTopsoils Rlverside site�ReportslRiverside4.doc � � <br /> �_ <br />