Volume 2-05, Chapter 3 - City of Wichita

Chapter 3 - Table of Contents
LIST OF TABLES
Table 3-1 Structural Controls .................................................................................................................................... 2
Table 3-2 Design Pollutant Removal Efficiencies for Stormwater Controls (Percentage) ........................................ 5
Table 3-3 Location and Permitting Checklist .......................................................................................................... 11
Table 3-4 Sample Structural Control Selection Matrix ............................................................................................ 13
Table 3-5 Filter Strip Sizing Guidance When Using for Pretreatment .................................................................... 57
Table 3-6 Bioretention Grass Channel Sizing Guidance When Used as Pretreatment ......................................... 64
Table 3-7 Percent Passing per Sieve Size for Aggregate Gradation ................................................................... 103
Table 3-8 Recommended Design Criteria for Stormwater Wetlands .................................................................... 132
Table 3-9 Percent Passing per Sieve Size for Aggregate Gradation ................................................................... 197
Table 3-10 Percent Passing per Sieve Size for Aggregate Gradation ................................................................. 204
Table 3-11 Typical Maintenance Activities for Green Roofs .................................................................................. 211
LIST OF FIGURES
Figure 3-1 Example of On-Line vs Off-Line Structural Controls ............................................................................. 15
Figure 3-2 Outlet Flow Regulator ............................................................................................................................ 16
Figure 3-3 Surface Channel Diversion Structure .................................................................................................... 16
Figure 3-4 Pipe Interceptor Diversion Structure...................................................................................................... 17
Figure 3-5 On-Site vs Regional Stormwater Management ..................................................................................... 18
Figure 3-6 Generalized Stormwater Treatment Train ............................................................................................. 20
Figure 3-7 Example Treatment Train – Rural Residential Subdivision ................................................................... 22
Figure 3-8 Example Treatment Train – Small Commercial Site ............................................................................. 23
Figure 3-9 Example Treatment Train – Large Commercial Development .............................................................. 23
Figure 3-10 Stormwater Pond Examples ................................................................................................................ 27
Figure 3-11 Permanent Pool Length to Width Ratio ............................................................................................... 32
Figure 3-12 Typical Stormwater Pond Geometry Criteria ....................................................................................... 33
Figure 3-13 Typical Pond Outlet Structure .............................................................................................................. 34
Figure 3-14 Schematic of Wet Pond ....................................................................................................................... 42
Figure 3-15 Schematic of Wet Extended Detention Pond ...................................................................................... 43
Figure 3-16 Schematic of Micropool Extended Detention Pond ............................................................................. 44
Figure 3-17 Schematic of Multiple Pond System .................................................................................................... 45
Figure 3-18 Schematic of Dry Extended Detention Basin ...................................................................................... 51
Figure 3-19 Schematic of Filter Strip (with optional Berm) ..................................................................................... 58
Figure 3-20 Typical Grass Channel ........................................................................................................................ 65
Figure 3-21 Schematic of a Typical Grass Channel ............................................................................................... 65
Figure 3-22 Enhanced Swale Example ................................................................................................................... 70
Figure 3-23 Schematic of Dry Swale ...................................................................................................................... 79
Figure 3-24 Infiltration Trench Example .................................................................................................................. 82
Figure 3-25 Schematic of a Typical Infiltration Trench ........................................................................................... 91
Figure 3-26 Observation Well Detail ....................................................................................................................... 92
Figure 3-27 Schematic of an Example Soakage Trench Installation ...................................................................... 96
Figure 3-28 Sand Filter Example ............................................................................................................................ 98
Figure 3-29 Surface Sand Filter Volumes ............................................................................................................. 102
Volume 2, Technical Guidance
Page 3 - v