Volume 2-05, Chapter 3 - City of Wichita
Volume 2-05, Chapter 3 - City of Wichita Volume 2-05, Chapter 3 - City of Wichita
Chapter 3 - Table of Contents 3.3.4.3 Pollutant Removal Capabilities .................................................................................. 163 3.3.4.4 Application and Site Feasibility Criteria ..................................................................... 164 3.3.4.5 Planning and Design Standards ................................................................................ 165 3.3.4.6 Design Procedures .................................................................................................... 169 3.3.4.7 Example Schematics ................................................................................................. 173 3.3.5 Organic Filter ................................................................................................................................ 175 3.3.5.1 General Description ................................................................................................... 176 3.3.5.2 Pollutant Removal Capabilities .................................................................................. 176 3.3.5.3 Design Criteria and Specifications ............................................................................. 176 3.3.5.4 Inspection and Maintenance Requirements .............................................................. 177 3.3.5.5 Example Schematic ................................................................................................... 178 3.4 Other Stormwater Management Facilities ............................................................................................. 179 3.4.1 Conventional Dry Detention Pond ................................................................................................ 181 3.4.1.1 General Description ................................................................................................... 182 3.4.1.2 Design Criteria and Specifications ............................................................................. 182 3.4.1.3 Inspection and Maintenance Requirements .............................................................. 184 3.4.1.4 Example Schematics ................................................................................................. 185 3.4.2 Underground Dry Detention Pond ................................................................................................ 187 3.4.2.1 General Description ................................................................................................... 188 3.4.2.2 Design Criteria and Specifications ............................................................................. 188 3.4.2.3 Inspection and Maintenance Requirements .............................................................. 189 3.4.2.4 Example Schematics ................................................................................................. 190 3.4.3 Porous Pavement ......................................................................................................................... 193 3.4.3.1 General Description ................................................................................................... 194 3.4.3.2 Pollutant Removal Capabilities .................................................................................. 195 3.4.3.3 Design Criteria and Specifications ............................................................................. 195 3.4.3.4 Inspection and Maintenance Requirements .............................................................. 198 3.4.3.5 Example Schematics ................................................................................................. 198 3.4.4 Modular Porous Paver Systems .................................................................................................. 201 3.4.4.1 General Description ................................................................................................... 202 3.4.4.2 Pollutant Removal Capabilities .................................................................................. 203 3.4.4.3 Design Criteria and Specifications ............................................................................. 203 3.4.4.4 Inspection and Maintenance Requirements .............................................................. 205 3.4.4.5 Example Schematics ................................................................................................. 206 3.4.5 Green Roof ................................................................................................................................... 207 3.4.5.1 General Description ................................................................................................... 208 3.4.5.2 Design Criteria and Specifications ............................................................................. 209 3.4.5.3 Inspection and Maintenance Requirements .............................................................. 211 3.4.5.4 Example Schematic ................................................................................................... 211 Page 3 - iv Volume 2, Technical Guidance
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
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<strong>Chapter</strong> 3 - Table <strong>of</strong> Contents<br />
3.3.4.3 Pollutant Removal Capabilities .................................................................................. 163<br />
3.3.4.4 Application and Site Feasibility Criteria ..................................................................... 164<br />
3.3.4.5 Planning and Design Standards ................................................................................ 165<br />
3.3.4.6 Design Procedures .................................................................................................... 169<br />
3.3.4.7 Example Schematics ................................................................................................. 173<br />
3.3.5 Organic Filter ................................................................................................................................ 175<br />
3.3.5.1 General Description ................................................................................................... 176<br />
3.3.5.2 Pollutant Removal Capabilities .................................................................................. 176<br />
3.3.5.3 Design Criteria and Specifications ............................................................................. 176<br />
3.3.5.4 Inspection and Maintenance Requirements .............................................................. 177<br />
3.3.5.5 Example Schematic ................................................................................................... 178<br />
3.4 Other Stormwater Management Facilities ............................................................................................. 179<br />
3.4.1 Conventional Dry Detention Pond ................................................................................................ 181<br />
3.4.1.1 General Description ................................................................................................... 182<br />
3.4.1.2 Design Criteria and Specifications ............................................................................. 182<br />
3.4.1.3 Inspection and Maintenance Requirements .............................................................. 184<br />
3.4.1.4 Example Schematics ................................................................................................. 185<br />
3.4.2 Underground Dry Detention Pond ................................................................................................ 187<br />
3.4.2.1 General Description ................................................................................................... 188<br />
3.4.2.2 Design Criteria and Specifications ............................................................................. 188<br />
3.4.2.3 Inspection and Maintenance Requirements .............................................................. 189<br />
3.4.2.4 Example Schematics ................................................................................................. 190<br />
3.4.3 Porous Pavement ......................................................................................................................... 193<br />
3.4.3.1 General Description ................................................................................................... 194<br />
3.4.3.2 Pollutant Removal Capabilities .................................................................................. 195<br />
3.4.3.3 Design Criteria and Specifications ............................................................................. 195<br />
3.4.3.4 Inspection and Maintenance Requirements .............................................................. 198<br />
3.4.3.5 Example Schematics ................................................................................................. 198<br />
3.4.4 Modular Porous Paver Systems .................................................................................................. 201<br />
3.4.4.1 General Description ................................................................................................... 202<br />
3.4.4.2 Pollutant Removal Capabilities .................................................................................. 203<br />
3.4.4.3 Design Criteria and Specifications ............................................................................. 203<br />
3.4.4.4 Inspection and Maintenance Requirements .............................................................. 2<strong>05</strong><br />
3.4.4.5 Example Schematics ................................................................................................. 206<br />
3.4.5 Green Ro<strong>of</strong> ................................................................................................................................... 207<br />
3.4.5.1 General Description ................................................................................................... 208<br />
3.4.5.2 Design Criteria and Specifications ............................................................................. 209<br />
3.4.5.3 Inspection and Maintenance Requirements .............................................................. 211<br />
3.4.5.4 Example Schematic ................................................................................................... 211<br />
Page 3 - iv<br />
<strong>Volume</strong> 2, Technical Guidance
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