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

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Table of Contents First Edition — May 2007AcknowledgementsDisclaimerChapter 1: IntroductionPurpose .................................................................................. 1-1Goals ..................................................................................... 1-1Background Information .............................................................. 1-2Using the Manual ....................................................................... 1-4Low-Impact Development Strategies and This Manual ........................... 1-8Chapter 2: An Integrated Approach toEffective Stormwater ManagementIntegrated Planning and Design Approach ......................................... 2-1Benefits of the Integrated Approach ............................................... 2-1Strategies for Effectively Integrating StormwaterQuality Management into Project Design ..................................... 2-2References .............................................................................. 2-7Additional Resources .................................................................. 2-7Chapter 3: Steps to Managing Stormwater QualityStep 1: Gather Project and Site Information ...................................... 3-1Step 2: Determine Requirements .................................................... 3-3Step 3: Evaluate Best Approach to Protect Stormwater Quality ............... 3-4Step 4: Select Source Control Measures (Chapter 4) ............................. 3-4Step 5: Select Runoff Reduction Measures (Chapter 5) .......................... 3-4Step 6: Select Treatment Control Measures (Chapter 6) ......................... 3-6Step 7: Design Facilities (Preliminary) ............................................. 3-7Step 8: Design Facilities (Final) ...................................................... 3-7Step 9: Establish Long Term Maintenance Requirements ........................ 3-8Step 10: Construct ..................................................................... 3-8Chapter 4: Source Control MeasuresFact Sheets:Source Control Principles ............................................................. 4-1Selecting Source Control Measures for Your Project .............................. 4-1Source Control Fact Sheets ........................................................... 4-2References .............................................................................. 4-2Storm Drain Markings and Signs ..................................................... SD-1Fueling Areas .......................................................................... FA-1Loading Areas .......................................................................... LA-1Outdoor Storage Areas .............................................................. OS-1Stormwater Quality Design Manual for the Sacramento and South Placer RegionsMay 2007i
Table of contentsOutdoor Work Areas ................................................................. OW-1Wash Areas ............................................................................ WA-1Waste Management Areas ......................................................... WM-1Chapter 5: Runoff Reduction Control MeasuresFact Sheets:Runoff Reduction Principles .......................................................... 5-1Selecting Runoff Reduction Control Measures for Your Project ................ 5-3Runoff Reduction Fact Sheets ....................................................... 5-3Runoff Reduction Credit Worksheets ............................................... 5-3References .............................................................................. 5-4Porous Pavement ..................................................................... PP-1Disconnected Pavement ............................................................. DP-1Alternative Driveways ............................................................... AD-1Disconnected Roof Drains ......................................................... DRD-1Interceptor Trees .................................................................... INT-1Green Roof ............................................................................ GR-1Chapter 6: Treatment Control MeasuresFact Sheets:Treatment Control Principles ........................................................ 6-1Selecting Treatment Control Measures ............................................. 6-1Designing Treatment Control Measures ............................................. 6-3Operation and Maintenance .......................................................... 6-3Treatment Control Measure Fact Sheets ........................................... 6-4Proprietary Treatment Control Measures .......................................... 6-4References .............................................................................. 6-5GlossaryConstructed Wetland Basin ...................................................... CWB-1Water Quality Detention Basin ..................................................... DB-1Infiltration Basin ...................................................................... IB-1Infiltration Trench .................................................................... IT-1Sand Filter ............................................................................. SF-1Stormwater Planter .................................................................. SP-1Vegetated Swale .......................................................................VS-1Vegetated Filter Strip .............................................................. VFS-1AppendicesA: Submittal RequirementsB: Maintenance RequirementsC: Connecting to the Sanitary Sewer System: General InformationD: Runoff Reduction Credits and Calculation WorksheetsE: Sizing Calculations for Stormwater Quality Treatment Control MeasuresF: Design Examples for Selected Stormwater Quality Treatment Control MeasuresG: Designing and Maintaining Stormwater Quality Control Measures to Avoid Vector ProblemsH: Drainage Design and Other Stormwater Management Information Not Covered in the ManualStormwater Quality Design Manual for the Sacramento and South Placer Regionsii May 2007
Page 1 and 2: Stormwater Quality Design Manualfor
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Page 7 and 8: Table of contentsSF-1.SF-2.SF-3.SF-
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
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Page 23 and 24: Integrated ApproachPut landscaping
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Page 27 and 28: Chapter 3Figure 3-1. Process for Ad
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Page 31 and 32: Chapter 3As the name implies (and a
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Page 35 and 36: Chapter 4Source Control Fact Sheets
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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 RequirementsSand FilterLo
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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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