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

More documents

Recommendations

Info

These tables refer to runoff reduction credit worksheets/forms which can be found in Appendix D-1 and D-2 of thisDesign Manual.Runoff Reduction Credits for Alternative DrivewaysVariationPervious DrivewayHollywoodDrivewayDisconnectedDrivewayShared DrivewayApplications and Runoff Reduction CreditsResidential — credits can be applied for the entire driveway surface when approvedmaterials and specifications are used in accordance with the Design Requirements.Use Appendix D-1.Residential — an efficiency multiplier of 75% of the driveway area when approvedmaterials and specifications are used in accordance with the Design Requirements.Use Appendix D-1.Residential — credits can be for the entire driveway surface when designedaccording to this fact sheet. Use Appendix D-1.Residential — credits vary according to design. Consult municipal engineerRunoff Reduction Credits for Disconnected Roof DrainsVariationSplash Block/Pop-up Drainage EmitterResidentialApplications and Runoff Reduction CreditsCredit may be given for each disconnected roof drain with the amount of creditdependent upon building set back. This calculation is simplified in Appendix D-1.CommercialCredit may be given for each disconnected roof drain meeting the designrequirements. The credit calculation is simplified in Appendix D-2.Dispersal Trench and Dry WellResidentialCommercialCredit may be given for each disconnected roof drain meeting the designrequirements. The credit calculation is simplified in Appendix D-1.Credit may be given for each disconnected roof drain meeting the designrequirements. The credit calculation is simplified in Appendix D-2.Runoff Reduction Credits for Interceptor TreesVariationAll Planted TreesApplications and Runoff Reduction CreditsResidential - Credit may be given for each new tree planted in the municipal rightof-way.Consult municipality about the possibility of credits for trees outside of themunicipal right-of-way. This calculation is simplified in Appendix D-1.Commercial - Credit may be given for each new tree planted within 25 feet ofground level impervious surfaces. 25% of trees already required by zoning can beused for Interceptor Tree credits. This calculation is simplified in Appendix D-2.New Evergreen Trees 200 square feet of creditNew Deciduous Trees 100 square feet of creditExisting Trees The Runoff Reduction Credit, as applied to existing trees, is calculated by identifyingthe square-footage equal to one-half of the existing tree canopy, measured within thedrip line. The resulting square footage divided by the total site square footage isequal to the IRP. This calculation is simplified in Appendix D-1 and D-2.*Trees required by the municipality as mitigation for other trees lost on the project will not count toward Runoff Reduction CreditStormwater Quality Design Manual for the Sacramento and South Placer RegionsMay 2007 Appendix D-3 Page 3
Trees Qualifying for Interceptor Tree Runoff Reduction Credits*Mature TreeShape Canopy (dia.) HeightCommon Name Botanical Name Type** (max.)American Chestnut Castanea dentata Oval to rounded or wide 40-60' 80-120'spreadingAmerican Hornbeam Carpinus caroliniana Vase-shaped 20-30' 25-30'American Linden Tilia americana Oval and informal 30-60' 60-80' (100')American Sweet Gum Liquidambar styraciflua Conical 20-40' 45-65'Amur Maackia Maackia amurensis Vase-shaped 15-20' 20-30'Amur Maple Acer tataricum ginnala Rounded 15-20' 20'Arizona Cypress Cupressus arizonica E Conical to vase 25-30' 40-50'Atlas (Blue) Cedar Cedrus atlantica E Flat-topped, loose, open 30-40' 40-60' (120')and spreadingAutum Blaze Maple Acer fremanii 'Autumn Blaze' Oval 50' 50'Bald Cypress Taxodium distichum Oval at maturity, uniform 20-30' 50-70' (100')Bechtel Crabapple Malus ioensis 'Plena' Broad-rounded 20' 25'Bigleaf Maple Acer macrophyllum N Broad-rounded 30-75' 45-75' (100')Blue Oak Quercus douglasii N P Rounded umbrella 50-80' 50-60'Burr Oak Quercus macrocarpa Broad-rounded 75-85' 70-80'California Bay Umbellularia californica EN Round 30' 25'California Black Oak a Quercus kelloggii N Vase 30-60' 30-80'Callery Pear Pyrus calleryana Oval 25' 40'Canary Island Date Palm Phoenix canariensis E Round head 25-30' 60'Canary Island Pine Pinus canariensis E Pyramidal 25-35' 60-80'Canyon Live Oak Quercus chrysolepis E N Broad-rounded 50-70' 50-75'Carob Ceratonia siliqua E Broad to wide-rounded 30-45' 30-40'Carolina Laurel Cherry Prunus caroliniana E Irregular rounded 15-25' 20-30' (40')Chaste Tree Vitex agnus-castus Rounded 15-20' 20-25'Chestnut-Leafed Oak Quercus castaneafolia Broad and rounded 50-60' 70-90'Chinese Evergreen Elm Ulmus parvifolia Rounded 40-50' 40-50' (70')Chinese Fringe Tree Chionanthus retusus Rounded 20-25' 20-25'Chinese Hackberry Celtis sinensis Rounded 50-60' 40-80'Chinese Pistache Pistacia chinensis Broad-rounded 25-35' 30-35' (50')Chinese Wingnut Pterocarya stenoptera Broad-rounded 30-40' 40-90'Coast Live Oak Quercus agrifolia EN Rounded 60' 40'Coast Redwood Sequoia sempervirens E Narrow pyramidal to wide 50-60' 350'conicalColorado Spruce Picea pungens E Narrow pyramidal to 10-20' 30-60' (135')broad conicalCommon Horsechestnut Aesculus hippocastanum Pyramidal to oval 40-70' 50-75' (100'+)Coolibah Eucalyptus microtheca Round head 30' 25-50'Cork Oak Quercus suber E Rounded 35-45' 70-100'Crabapple 'Prariefire" Malus ioensis 'Prariefire' Broad-rounded 15-20' 25'Crape Myrtle (Tree Form, Lagerstroemia hybrids Broad-rounded 15-20' 6-30'some are large shrubs)Crimson Sentry Maple Acer platanoides 'Crimson Sentry' Oval 40' 40'Dawn Redwood Metasequoia glyptostroboides Conical to narrow 25-35' 80-90' (120')pyramidal and formalDeodar Cedar Cedrus deodara E Wide and slightly flat-topped 30-60' 40-70' (200')Stormwater Quality Design Manual for the Sacramento and South Placer RegionsMay 2007 Appendix D-3 Page 4
Page 1 and 2:
Stormwater Quality Design Manualfor
Page 3 and 4:
Stormwater Quality Design Manual wa
Page 5 and 6:
Table of contentsOutdoor Work Areas
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
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
Page 37 and 38:
Source Control Measure Fact SheetSt
Page 39 and 40:
Source Control Measure Fact SheetFu
Page 41 and 42:
Source Control Measure Fact SheetLo
Page 43 and 44:
Source Control Measure Fact SheetOu
Page 45 and 46:
Source Control Measure Fact SheetOu
Page 47 and 48:
Source Control Measure Fact SheetWa
Page 49 and 50:
Source Control Measure Fact SheetWa
Page 51 and 52:
5 Runoff Reduction Control Measures
Page 53 and 54:
Runoff Reduction Control MeasuresDe
Page 55 and 56:
Runoff Reduction Control Measures
Page 57 and 58:
Runoff Reduction Control Measure Fa
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Runoff Reduction Fact SheetDisconne
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Chapter 6• What are pollutants of
Page 109 and 110:
Chapter 6For projects using any of
Page 111 and 112:
Runoff Treatment Control Measure Fa
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Design Data Summary SheetConstructe
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Technical RequirementsInfiltration
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Technical RequirementsSand FilterSa
Page 159 and 160:
Technical RequirementsSand FilterDe
Page 161 and 162:
Technical RequirementsSand FilterDe
Page 163 and 164:
Technical RequirementsSand FilterSt
Page 165 and 166:
Technical RequirementsSand FilterTa
Page 167 and 168:
Technical RequirementsSand FilterLo
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Technical RequirementsVegetated Swa
Page 179 and 180: Technical RequirementsVegetated Swa
Page 185 and 186: Runoff Treatment Control Measure Fa
Page 191 and 192: Glossaryexposure of construction ma
Page 193 and 194: GlossaryLow Impact Development (LID
Page 195 and 196: GlossaryRegional Stormwater Quality
Page 197 and 198: Appendix ASubmittal RequirementsThe
Page 199 and 200: Sacramento County Supplemental Appl
Page 201: Example Post Construction Stormwate
Page 204 and 205: Typically maintenance agreements an
Page 206 and 207: Example Maintenance Covenant(Sacram
Page 208 and 209: Device in accordance with the maint
Page 210 and 211: [attach]DECLARANT’S ACKNOWLEGEMEN
Page 212 and 213: Recorded at the request of:CITY OF
Page 214 and 215: 9. The obligations herein undertake
Page 216 and 217: EXHIBIT B[Map/Illustration]
Page 218 and 219: City of FolsomThe City of Folsom ow
Page 220 and 221: Appendix D-1: Residential Sites: Ru
Page 222: Form D-1d: Alternative Driveway Des
Page 225 and 226: Form D-2a: Disconnected Pavement Wo
Page 228 and 229: Appendix D-3Runoff Reduction Credit
Page 232 and 233: Mature TreeShape Canopy (dia.) Heig
Page 234 and 235: Appendix D4LID Credits Background R
Page 236 and 237: unoff from the driveway by 60% whil
Page 238 and 239: The designer must determine how man
Page 240 and 241: Or the ASCE-WEF method (Sacramento)
Page 242 and 243: Table 3 - Multipliers Based on Rati
Page 244 and 245: Using the Effective Area Managed in
Page 246 and 247: SMRC, The Stormwater Manager’s Re
Page 248 and 249: Flow-based control measure design s
Page 250 and 251: 4. Apply the Rational Formula to ca
Page 252 and 253: 5. Enter the capture curve selected
Page 254 and 255: 1.201.000.80STORAGE (in)0.600.4024-
Page 256 and 257: 1.201.000.80STORAGE (in)0.600.4048
Page 258 and 259: Subject: VEGETATED SWALE EXAMPLEPLA
Page 260: PART II:Routing Excess Runoff throu
Page 263 and 264: 4. Design the OutletThe outlet shou
Page 265 and 266: Exhibit 1Water Quality Orifice Outl
Page 267 and 268: 3. Calculate Planter Surface Area A
Page 269 and 270: • Bottom slopes of 0.01 to 0.05%
Page 271: Appendix HDrainage Design and Storm
show all

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

Create successful ePaper yourself

Delete template?

Save as template?