Stormwater Quality Design Manual (May 2007) - City of Sacramento ...

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Table of contentsList of Tables1-1. Applying the Design Manualto Every Phase of Development ..................................................... 1-51-2. Types of Projects Addressed By This Manual ...................................... 1-63-1. Project Categories and Associated Potential Pollutants ......................... 3-33-2. Stormwater Quality Control Measure Selection Matrix .......................... 3-54-1. Source Control Measures Required By Project Category ......................... 4-2SD-1. Design Requirements for Storm Drain Inlet Marketing and Signage ........... SD-1FA-1. Design Requirements for Fueling Areas to Protect Water Quality ............ FA-2LA-1. Design Requirements for Loading Areas to Protect Water Quality ............ LA-2OS-1. Design Requirements for Outdoor Storage Areas to Protect Water Quality OS-2OW-1. Design Requirements for Outdoor Work Areas to Protect Water Quality .. OW-2WA-1. Design Requirements for Equipment and VehicleWash Areas to Protect Water Quality ............................................. WA-1WM-1. Design Requirements for Waste ManagementAreas to Protect Water Quality ................................................... WM-2PP-1. Design Criteria for Porous Pavement ............................................. PP-11PP-2. Inspection and Maintenance Recommendationsfor Porous Pavement ............................................................... PP-12PP-3. Selected Local Pervious Concrete Installations ................................ PP-13DP-1. Disconnected Pavement Design Criteria ......................................... DP-5AD-1. Design Criteria for Alternative Driveways ........................................ AD-3DRD-1. Conveyance Zone for Splash Blocksand Pop-up Drainage Emitters .................................................... DRD-3DRD-2. Design Criteria for Disconnected Roof Drains .................................. DRD-7DRD-3. Inspection and Maintenance Recommendations for DispersalTrenches and Dry Wells ............................................................ DRD-8INT-1. Design Criteria for Interceptor Trees ............................................ INT-4INT-2. Inspection and Maintenance Recommendations for Interceptor Trees ..... INT-5GR-1. Ecoroof Design Criteria .............................................................. GR-3GR-2. Inspection and Maintenance Recommendations for Green Roofs ............ GR-8GR-3. Design Data Summary Sheet for Green Roof .................................... GR-11CWB-1. Constructed Wetland Basin Design Criteria .................................... CWB-3CWB-2. Distribution of Wetland Components ........................................... CWB-4CWB-3. Inspection and Maintenance Recommendationsfor Constructed Wetland Basins ................................................. CWB-7CWB-4. Design Data Summary Sheet for Constructed Wetland Basin ............... CWB-9DB-1. Water Quality Detention Basin Design Criteria .................................. DB-4DB-2. Dry Weather Design Flows .......................................................... DB-8DB-3. Plants for Areas that are Periodically Inundated .............................. DB-10DB-4. Plants to Use In/Adjacent to a Permanent Pond .............................. DB-11DB-5. Inspection and Maintenance Recommendationsfor Water Quality Detention Basins .............................................. DB-12DB-6. Design Data Summary Sheet for Water Quality Detention Basin ............ DB-19IB-1. Infiltration Basin Design Criteria ................................................... IB-2IB-2. Inspection and Maintenance Recommendations for Infiltration Basins ....... IB-6IB-3. Design Data Summary Sheet for Infiltration Basin ............................... IB-7IT-1. Infiltration Trench Design Criteria ................................................. IT-3IT-2. Inspection and Maintenance Recommendations for Infiltration Trenches ... IT-5IT-3. Design Data Summary Sheet for Infiltration Trench ............................. IT-9Stormwater Quality Design Manual for the Sacramento and South Placer RegionsMay 2007iii
Table of contentsSF-1.SF-2.SF-3.SF-4.SP-1.SP-2.SP-3.VS-1.VS-2.VS-3.VFS-1.VFS-2.VFS-3.Austin Sand Filter Design Criteria .................................................. SF-3Geotextile Fabric and Drainage Matting Specifications for Sand Filters ..... SF-9Inspection and Maintenance Recommendations for Sand Filters ............. SF-11Design Data Summary Sheet for Sand Filter ..................................... SF-12Stormwater Planter Design Criteria ................................................ SP-3Inspection and Maintenance Recommendations for Stormwater Planter .... SP-5Design Data Summary Sheet for Stormwater Planter ........................... SP-7Vegetated Swale Design Criteria ................................................... VS-3Inspection and Maintenance Recommendations for Vegetated Swale ........ VS-6Design Data Summary Sheet for Vegetated Swale................................ VS-8Vegetated Filter Strip Design Criteria ........................................... VFS-2Inspection and Maintenance Recommendationsfor Vegetated Filter Strips ........................................................ VFS-4Design Data Sheet for Vegetated Filter Strip ................................... VFS-6List of Figures3-1. Process for Addressing Stormwater Quality Requirements ...................... 3-2SD-1. Storm Drain Inlet Message ........................................................... SD-2LA-1. Recommended Loading Area Drainage Design ................................... LA-3PP-1. Typical Pervious Concrete Sections ................................................ PP-5PP-2. Modular Block Pavement, Typical Section ........................................ PP-7PP-3. Reinforced Grass Pavement Typical Sections .................................... PP-8PP-4. Cobblestone Block Pavement, Typical Section ................................... PP-9PP-5. Porous Gravel Pavement, Typical Sections ..................................... PP-10DRD-1. Dispersal Trench – Typical Sections .............................................. DRD-4DRD-2. Drywell – Typical Sections ......................................................... DRD-5GR-1. Typical Green Roof Configuration ................................................. GR-4CWB-1. Constructed Wetland Basin ...................................................... CWB-8DB-1. Park Incorporating Water Quality Detention with Wet Pond .................. DB-3DB-2. Water Quality Detention Pond Incorporating Wet Pond andNatural Contours ...................................................................... DB-3DB-3. Basin Criteria to Control Stormwater Pollution .................................. DB-5DB-4. Dry Extended Stormwater Quality Detention Basin ........................... DB-15DB-5. Low Flow Channel .................................................................. DB-16DB-6. Outfall structure .................................................................... DB-17DB-7. Outfall structure Access Ramp ................................................... DB-18IB-1. Infiltration Basin....................................................................... IB-5IT-1. Infiltration Trench .................................................................... IT-6IT-2. Infiltration Vault ...................................................................... IT-7IT-3. Infiltration Leach Field .............................................................. IT-8SF-1. Sand Filter Configurations (Austin Sand Filter) .................................. SF-4SF-2. Example Sediment Trap Details .................................................... SF-6SF-3. Filter Bed with Gravel Underdrain ................................................ SF-10SF-4. Filter Bed with Trench Underdrain ............................................... SF-10SP-1. Infiltration Stormwater Planter Configurations .................................. SP-5SP-2. Flow-through Stormwater Planter Configuration ................................ SP-6VS-1. Vegetated Swale ...................................................................... VS-7VFS-1. Vegetated Filter Strip .............................................................. VFS-5Stormwater Quality Design Manual for the Sacramento and South Placer Regionsiv May 2007
Page 1 and 2: Stormwater Quality Design Manualfor
Page 3 and 4: Stormwater Quality Design Manual wa
Page 5: Table of contentsOutdoor Work Areas
Page 9 and 10: Other Development Community Reviewe
Page 11 and 12: 1 IntroductionPurposeThis Stormwate
Page 13 and 14: IntroductionIn July 2003, the permi
Page 15 and 16: IntroductionFor redevelopment proje
Page 17 and 18: Introduction• The Appendices prov
Page 19 and 20: 2 An Integrated Approach toEffectiv
Page 21 and 22: Integrated ApproachIt is also helpf
Page 23 and 24: Integrated ApproachPut landscaping
Page 25 and 26: Integrated Approachfactors will be
Page 27 and 28: Chapter 3Figure 3-1. Process for Ad
Page 29 and 30: Chapter 3runoff reduction first (ev
Page 31 and 32: Chapter 3As the name implies (and a
Page 33 and 34: Chapter 3Step 9: Establish Long Ter
Page 35 and 36: Chapter 4Source Control Fact Sheets
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Page 51 and 52: 5 Runoff Reduction Control Measures
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Runoff Reduction Control Measure Fa
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Runoff Reduction Fact SheetDisconne
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Chapter 6• What are pollutants of
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Chapter 6For projects using any of
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Runoff Treatment Control Measure Fa
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Design Data Summary SheetConstructe
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Technical RequirementsInfiltration
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Technical RequirementsSand FilterSa
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Technical RequirementsSand FilterDe
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Technical RequirementsSand FilterSt
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Technical RequirementsSand FilterTa
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Technical RequirementsVegetated Swa
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Glossaryexposure of construction ma
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GlossaryLow Impact Development (LID
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GlossaryRegional Stormwater Quality
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Appendix ASubmittal RequirementsThe
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Sacramento County Supplemental Appl
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Example Post Construction Stormwate
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Typically maintenance agreements an
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Example Maintenance Covenant(Sacram
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Device in accordance with the maint
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[attach]DECLARANT’S ACKNOWLEGEMEN
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Recorded at the request of:CITY OF
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9. The obligations herein undertake
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EXHIBIT B[Map/Illustration]
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City of FolsomThe City of Folsom ow
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Appendix D-1: Residential Sites: Ru
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Form D-1d: Alternative Driveway Des
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Form D-2a: Disconnected Pavement Wo
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Appendix D-3Runoff Reduction Credit
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These tables refer to runoff reduct
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Mature TreeShape Canopy (dia.) Heig
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Appendix D4LID Credits Background R
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unoff from the driveway by 60% whil
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The designer must determine how man
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Or the ASCE-WEF method (Sacramento)
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Table 3 - Multipliers Based on Rati
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Using the Effective Area Managed in
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SMRC, The Stormwater Manager’s Re
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Flow-based control measure design s
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4. Apply the Rational Formula to ca
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5. Enter the capture curve selected
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1.201.000.80STORAGE (in)0.600.4024-
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1.201.000.80STORAGE (in)0.600.4048
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Subject: VEGETATED SWALE EXAMPLEPLA
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PART II:Routing Excess Runoff throu
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4. Design the OutletThe outlet shou
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Exhibit 1Water Quality Orifice Outl
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3. Calculate Planter Surface Area A
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• Bottom slopes of 0.01 to 0.05%
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Appendix HDrainage Design and Storm
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