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  • F.1 Stormwater Regulation Compliance | Philadelphia Water Stormwater Plan Review
    and Wet Basin Construction Guidance 4 7 6 Pond and Wet Basin Maintenance Guidance Back to Chapter 4 4 8 1 Subsurface Detention Introduction 4 8 2 Subsurface Detention Components 4 8 3 Subsurface Detention Design Standards 4 8 4 Subsurface Detention Material Standards 4 8 5 Subsurface Detention Construction Guidance 4 8 6 Subsurface Detention Maintenance Guidance Back to Chapter 4 4 9 1 Media Filter Introduction 4 9 2 Media Filter Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.1-stormwater-regulation-compliance (2016-04-24)
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  • F.2 Post-Construction Stormwater Management Plan | Philadelphia Water Stormwater Plan Review
    Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 2 Post Construction Stormwater Management Plan F 2 1 PCSMP Drawings General Verify that all plans meet all of the PWD general plan sheet requirements listed in Appendix E Table E 1 Section 2 3 1 Verify that all plans meet at minimum all of the Conceptual Stormwater Management Plan requirements listed in Appendix E Table E 3 Section 2 3 1 Verify that all plans reports and calculations are signed and sealed by a PA professional engineer The first sheet of the plan set must have an original signature not an electronic scanned or stamped copy and seal from a Professional Engineer licensed in the Commonwealth of Pennsylvania The remaining plans may have a facsimile seal Section 2 3 1 Appendix E Table E 1 Verify that final plans for construction are provided for the project Only Final Construction Drawings will be considered for PCSMP Approval by PWD Stormwater Plan Review Section 2 3 1 Verify that a north arrow legend and scale are provided on plans Appendix E Table E 1 Verify that the proposed building footprint is labeled Appendix E Table E 1 Verify that all acronyms and symbols are identified in the plan legends Appendix E Table E 1 Verify that the plan legend is consistent with the plan view Appendix E Table E 1 Verify that all plan drawings are legible Section 2 3 1 Appendix E Table E 1 Existing Conditions Plan Verify that the Existing Conditions Plan meets all of the PWD general plan sheet requirements listed in Appendix E Table E 1 Section 2 1 1 Verify that the Existing Conditions Plan meets all of the specific requirements for Existing Conditions Plans listed in Appendix E Table E 2 Section 2 1 1 Details Verify that construction details are provided for all stormwater management practices Section 2 3 1 Verify that a pipe connection detail is provided for the proposed connection s to the existing storm sewer s Section 3 4 2 Verify that dimensions of the proposed outlet control structure are provided Section 4 12 1 6 Drainage Area Plans Verify that drainage boundaries are based on site topography and include the entire tributary area including any off site drainage if applicable Section 3 4 1 Appendix E Table E 7 Verify that common points of analysis are chosen to compare predevelopment and post development conditions Section 3 4 1 Appendix E Table E 7 Verify that points of analysis are clearly labeled on the plans and in the stormwater model Section 3 4 1 Appendix E Table E 7 Verify that pertinent existing stormwater infrastructure necessary to define the existing drainage conditions including roof leaders is shown Appendix E Table E 7 Verify that the inlet drainage area for each inlet trench drain yard drain and or area drain is indicated on the plans and that the following information is clearly labeled and accurate for each area Appendix E Table E 7 Inlet drainage area Inlet time of concentration Impervious and pervious cover within each inlet drainage area Runoff coefficient Verify that the roof drainage area for each roof leader is indicated on the plans Appendix E Table E 7 F 2 2 Grading Design Verify that the proposed grading is provided Section 2 3 1 Verify that there is positive slope away from the proposed buildings Verify that proposed contours are closed or tie in to the existing contours at the limit of earth disturbance Verify that spot grades are provided as necessary Verify that all DCIA within the project s limit of earth disturbance is captured especially at the site s ingress and egress areas Section 1 2 1 Section 3 4 1 F 2 3 Utilities and Storm Sewer Design Verify that the length material size and slope of all piping associated with stormwater conveyance and roof drainage systems are clearly labeled on the plans Section 3 4

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.2-post-construction-stormwater-management-plan (2016-04-24)
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  • F.3 Erosion and Sediment Control | Philadelphia Water Stormwater Plan Review
    1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 3 Erosion and Sediment Control F 3 1 E S Plans Verify that the E S Plans meet all of the E S Plan requirements listed in Appendix E Table E 4 Section 2 3 1 Verify that the E S Plans include all standard E S notes listed in Appendix E Table E 5 Section 2 3 1 Verify that the boundaries of and total area encompassed by the limit of earth disturbance are clearly indicated on the plans and that the area is consistent with the area provided on PWD Stormwater Plan Review Worksheet 2 Section 2 3 1 Appendix E Table E 4 Verify that the limit of disturbance includes all off site storm and utility connections Appendix E Table E 4 If a PA DEP NPDES Permit has not been applied for verify that the limit of disturbance remains less than one acre Site disturbance limits within approximately 10 of one acre are more likely to reach or exceed one acre during construction Therefore PWD recommends applying for

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.3-erosion-and-sediment-control (2016-04-24)
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  • F.4 Disconnected Impervious Cover | Philadelphia Water Stormwater Plan Review
    Back to Chapter 4 4 9 1 Media Filter Introduction 4 9 2 Media Filter Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.4-disconnected-impervious-cover (2016-04-24)
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  • F.5 Infiltration Testing and Soil Assessment | Philadelphia Water Stormwater Plan Review
    1 Subsurface Detention Introduction 4 8 2 Subsurface Detention Components 4 8 3 Subsurface Detention Design Standards 4 8 4 Subsurface Detention Material Standards 4 8 5 Subsurface Detention Construction Guidance 4 8 6 Subsurface Detention Maintenance Guidance Back to Chapter 4 4 9 1 Media Filter Introduction 4 9 2 Media Filter Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 5 Infiltration Testing and Soil Assessment F 5 1 Soil Characterization Verify that an Infiltration Testing and Soil Characterization Plan is provided with the submitted Geotechnical Report Section 3 3 1 Appendix E Table E 7 Verify that information on the soil stratum and groundwater for each SMP area is obtained and provided The invert elevation of any infiltration SMP must be at least two feet above any limiting zone such as groundwater bedrock or impermeable soils Section 3 3 2 Section 3 3 6 Appendix H For exploratory test pits verify the following For projects with 15 000 square feet or more of earth disturbance verify that a minimum of two test pits are completed for each SMP footprint For projects with less than 15 000 square feet of earth disturbance verify that a minimum of one test pit is completed for each SMP footprint Section 3 3 2 Verify that at least one test pit for each SMP is excavated to a minimum depth of four feet below the proposed infiltration interface of the SMP which is the lowest elevation where infiltration is proposed the SMP bottom elevation or until bedrock or fully saturated conditions are encountered When conditions prevent the over excavation of test pits to the minimum required depth soil borings in addition to the under excavated test pits are used in conjunction with double ring infiltrometer testing to provide soil classification down to the required depths Section 3 3 2 For hollow stem augered boreholes soil borings verify the following Verify that a minimum of one soil boring is conducted for each cased borehole infiltration test Section 3 3 2 Verify that all soil borings are advanced to a depth of six feet below the SMP bottom elevation or until auger refusal with continuous split spoon sampling Section 3 3 2 Verify that the inner tube used is no less than four inches in diameter Section 3 3 2 Verify that all soil borings are conducted pursuant to the Hollow Stem Auguered Borehole Procedure provided in Section 3 3 4 Section 3 3 4 For soil sampling verify the following Verify that three soil samples are taken per acre of SMP footprint area with a minimum of one soil sample per SMP Section 3 3 2 Verify that at least one soil sample is taken at an elevation within one vertical foot of the infiltration interface SMP bottom elevation Section 3 3 2 Verify that at least one soil sample is taken from the location of an infiltration test and that a sieve analysis of the sample is conducted Section 3 3 2 Verify that the soil samples

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.5-infiltration-testing-and-soil-assessment (2016-04-24)
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  • F.6 Hydrologic Model and Calculation Methods | Philadelphia Water Stormwater Plan Review
    Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 6 Hydrologic Model and Calculation Methods F 6 1 Hydrologic

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.6-hydrologic-model-and-calculation-methods (2016-04-24)
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  • F.7 Bioinfiltration/Bioretention | Philadelphia Water Stormwater Plan Review
    Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 7 Bioinfiltration Bioretention F 7 1 Bioinfiltration Bioretention Plan Standards Verify that the plans include an appropriate sequence of construction that is specific to the construction of the bioinfiltration bioretention SMP Refer to Section 4 1 5 for guidance Section 2 3 1 To avoid soil disturbance and compaction during construction verify that the bioinfiltration area is proposed to be clearly marked before any site work begins Section 4 1 5 2 Verify that the plans include an appropriate cross sectional detail for the bioinfiltration bioretention SMP Section 2 3 1 F 7 2 Bioinfiltration Bioretention Design Standards Verify that the SMP drains within the acceptable 72 hour period Section 4 1 3 1 Verify that the loading ratio of DCIA to the horizontal footprint of the bioinfiltration bioretention SMP does not exceed 16 1 Section 4 1 3 2 Verify that positive overflow is provided for large storm events up to and including the 100 year 24 hour storm event Section 4 1 3 3 Verify that overflow structures and pipes are designed to convey at least the ten year 24 hour storm event Section 4 1 3 3 Verify that bioinfiltration SMPs are located at least ten feet from any adjacent private property line not abutting a public right of way street unless a deed restriction is put in place extending at least ten feet from the perimeter of the infiltrating SMP Section 4 1 3 4 Verify that bioinfiltration SMPs are located at least ten feet from any building foundation Section 4 1 3 5 Verify that the invert elevation of a bioinfiltration SMP is at least two feet above any poorly infiltrating soils seasonal high groundwater table bedrock or other limiting zone Section 4 1 3 6b For hydrologic modeling verify that the design infiltration rate is applied to the horizontal surface area SMP footprint not the wetted area If necessary for the purpose of meeting the Water Quality requirement infiltration can be assumed through the horizontal projection of the wetted area up to the Water Quality Volume WQv water surface elevation Section 4 1 3 6c Verify that the soils underlying a bioinfiltration SMP are determined to be infiltration feasible Section 4 1 3 6d Verify that any soils with test infiltration rates in excess of ten inches per hour are proposed to receive soil amendments Section 4 1 3 6e Verify that pretreatment is provided for all runoff entering the bioinfiltration bioretention SMP including pretreatment of runoff from all inlets At a minimum this can be achieved through the use of sumps and traps for inlets sump boxes with traps downstream of trench drains and filter strips for overland flow Section 4 1 3 8 Verify that energy dissipaters such as riprap stone are proposed at all locations of concentrated inflow Section 4 1 3 9 Verify that the storage area for a bioinfiltration SMP provides static storage for the WQv between the bottom elevation of the SMP and the elevation of the lowest outlet including the planting soil medium and stone storage void space Bioinfiltration basins may also be sized per the Bioinfiltration Bioretention Basin Sizing Table Table 4 1 4 of the Manual to ensure that storage requirements are achieved Section 4 1 3 11 Verify that the storage area for a bioretention SMP provides adequate storage to control release rates to meet all applicable Stormwater Regulations Void space in the soil and or stone layers beneath the bioretention area surface may be considered part of the available volume of the SMP Bioretention basins may also be sized per the Bioinfiltration Bioretention Basin Sizing Table Table 4 1 4 of the Manual to ensure that storage and Water Quality release rate requirements are achieved Section 4 1 3 12 If the basin is sized per the Bioinfiltration Bioretention Basin Sizing Table Table 4 1 4 of the Manual verify that the orifice diameter proposed is appropriate to the applicable DCIA drainage area range Section 4 1 3 Verify that the maximum storage volume statically stored within the bioinfiltration bioretention SMP without supporting documentation defined below is the runoff volume from the one year 24 hour storm event Section 4 1 3 13 Verify that the maximum storage volume statically stored within the bioinfiltration bioretention SMP with supporting documentation is the runoff volume from the ten year 24 hour storm event Requirements for supporting documentation include a letter signed and sealed by both the geotechnical and design engineer indicating that the proposed design is recommended with the following components acknowledged and considered The designer is encouraged to contact PWD for further guidance when pursuing this design Section 4 1 3 14 A summary of the long term impacts

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.7-bioinfiltration-bioretention (2016-04-24)
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  • F.8 Porous Pavement | Philadelphia Water Stormwater Plan Review
    6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Appendices 44 mb Download Design Guidance Checklists F 8 Porous Pavement F 8 1 Porous Pavement Plan Standards Verify that the plans include an appropriate sequence of construction that is specific to the construction of the porous pavement Refer to Section 4 2 5 for guidance Section 2 3 1 To avoid soil disturbance and compaction during construction verify that the infiltration area is proposed to be clearly marked before any site work begins Section 4 2 5 1 Verify that the plans include an appropriate cross sectional detail for the porous pavement Section 2 3 1 F 8 2 Porous Pavement Design Standards Verify the drainage area directed to any proposed porous pavement If DCIA runoff from other areas on site in addition to the direct 1 1 rainfall onto the porous pavement is directed onto porous pavement the porous pavement cannot be considered disconnected It must instead be considered and modeled as a porous pavement structural SMP The porous surface must be considered and modeled as DCIA Porous pavement structural SMPs require infiltration testing Section 4 2 1 For porous pavement structural SMPs if infiltration is feasible verify that the porous pavement design meets all Design Guidance Checklist design standards noted in Appendix F 10 Subsurface Infiltration Section 4 2 3 2 For porous pavement structural SMPs if infiltration is infeasible verify that the porous pavement design meets all Design Guidance Checklist design standards noted in Appendix F 14 Subsurface Detention Section 4 2 3 3 For porous pavement DIC systems Verify that the porous pavement DIC is installed on site such that it does not create any areas of concentrated infiltration or discharge Section 4 2 3 1a Verify that the surface slope in any direction across porous pavement does not exceed 5 Section 4 2 3 1b Verify that the choker course depth is a minimum of two inches Section 4 2 3 1c If an underdrain is proposed verify that the first 1 5 inches of runoff are stored below the lowest invert of the underdrain Section 4 2 3 1d Verify that an appropriate porous pavement curve number value is used when performing Flood Control calculations Section 4 2 3 1e Verify that the stone storage bed depth is a minimum of eight inches except when located beneath walkways or play surfaces for which a depth of four inches is allowable Section 4 2 3 6a Verify that stone is separated from soil media by a geotextile or a pea gravel filter to prevent sand silt and sediment from entering the system Section 4 2 3 6b Verify that the stone storage system has a level bottom Terraced systems may be used to maintain a level infiltration interface with native soil while accommodating significant grade changes Section 4 2 3 6c Verify that pretreatment is provided for all runoff entering the porous pavement including pretreatment of runoff from all inlets At a minimum this can be achieved through the use of sumps and traps for inlets sump boxes with traps downstream of trench drains and filter strips for overland flow Section 4 2 3 4 Verify that when SMPs are used in series the storage areas for all SMPs provide cumulative static storage for the WQv Section 4 2 3 9 Verify that any impervious liner if necessary is not interrupted by structures within the basin footprint The plans must indicate that the impervious liner is to be continuous and extend completely up the sides of any structures that are located within the lined basin footprint to the ground surface If additional liner material must be added to extend up the structures the additional liner sections are to be joined to the rest of the liner with an impervious seam per the manufacturers recommendations Section 4 2 3 10 Verify that underdrains if proposed for porous pavement DIC systems meet the following requirements Underdrains must be surrounded by a sand or stone layer to filter sediment and facilitate drainage Section 4 2 3 11a The minimum allowable thickness of a sand or stone filter layer is six inches both above and beneath the underdrain Section 4 2 3 11b To prevent clogging underdrain pipes must be surrounded by a geotextile fabric if a sand layer is used Section 4 2 3 11c Verify that an adequate number of appropriately placed cleanouts manholes access panels and other access features are provided to allow unobstructed and safe access to the porous pavement structural SMP for routine maintenance and inspection of inflow outflow underdrains and storage systems Section 4 2 3 13 Verify that an observation well is provided for a storage system that includes

    Original URL path: http://www.pwdplanreview.org/manual/appendices/f.-design-guidance-checklist/f.8-porous-pavement (2016-04-24)
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