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I <br /> I Drainage Report <br /> Boeing Everett-E-6 Parking Lot Expansion July 16,2013 <br /> ITABLE OF CONTENTS <br /> 1. Project Description 1 <br /> I 1.1 Predeveloped Site Conditions 1 <br /> 1.2 Developed Site Conditions 2 <br /> 1.3 Site Area and Size of Improvements 2 <br /> 1.4 Predeveloped Stormwater Runoff Conditions 3 <br /> I1.5 Postdeveloped Stormwater Runoff Conditions 3 <br /> 1.6 Site Map 4 <br /> 2. Site Assessment 4 <br /> I <br /> 2.1 Topography 4 <br /> 2.2 Drainage 4 <br /> 2.3 Soils 4 <br /> I 2.4 Critical Areas 4 <br /> 2.5 Adjacent Areas 4 <br /> 3. Site Development Plan 5 <br /> I 3.1 Minimum Requirement#1 -Preparation of Stormwater Site Plans 8 <br /> 3.2 Minimum Requirement#2-Construction Stormwater Pollution Prevention 8 <br /> 3.3 Minimum Requirement#3-Source Control of Pollution 8 <br /> I 3.4 Minimum Requirement#4-Preservation of Natural Drainage Systems and Outfalls 8 <br /> 3.5 Minimum Requirement#5 -On-Site Stormwater Management 8 <br /> 3.6 Minimum Requirement#6-Runoff Treatment 8 <br /> I 3.7 Minimum Requirement#7-Flow Control 8 <br /> 3.8 Minimum Requirement#8-Wetlands Protection 9 <br /> 3.9 Minimum Requirement#9-Operation and Maintenance 9 <br /> I 4. Construction Stormwater Pollution Prevention Plan 9 <br /> 4.1 Element#1 -Mark Clearing Limits 9 <br /> 4.2 Element#2-Establish Construction Access 9 <br /> I 4.3 Element#3 -Control Flow Rates 10 <br /> 4.4 Element#4-Install Sediment Controls 10 <br /> 4.5 Element#5 -Stabilize Soils 10 <br /> I 4.6 Element#6-Protect Slopes 10 <br /> 4.7 Element#7-Protect Drain Inlets 10 <br /> 4.8 Element#8-Stabilize Channels and Outlets 11 <br /> I 4.9 Element#9-Control Pollutants 11 <br /> 4.10 Element#10-Control De-Watering 11 <br /> 4.11 Element#11 -Maintain BMPs 11 <br /> I 4.12 Element#12-Manage the Project 11 <br /> 5. Source Control Plan 14 <br /> 6. Special Reports and/or Studies 14 <br /> I <br /> 7. Other Permits 14 <br /> 8. Permanent Stormwater Control Plan 14 <br /> 8.1 Off-site Analysis 15 <br /> I 8.2 Pre-Developed Hydrology 15 <br /> 8.3 Developed Hydrology 15 <br /> 8.4 Stormwater Flow Control Plan 16 <br /> I <br /> 20130715_Drainage Report_Boeing Everett_Gate E-6 Parking Lot.doc Page iii <br /> I <br />