Rhode Island Stormwater Design and Installations Standards Manual - - PowerPoint PPT Presentation

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Rhode Island Stormwater Design and Installations Standards Manual - - PowerPoint PPT Presentation

Jun 11, 2023 139 likes •332 views

Rhode Island Stormwater Design and Installations Standards Manual Public Workshop How to Use the Revised Manual January 13, 2011 Horsley W itten Group, I nc. Horsley W itten Group, I nc. Who Should Use the Manual? Municipal Officials

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Rhode Island Stormwater Design and Installations Standards Manual

Public Workshop How to Use the Revised Manual January 13, 2011

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Designers

Who Should Use the Manual?

Property Owners Regulatory Reviewers Municipal Officials

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Steps to Designing an Approvable Stormwater System

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Steps 1 and 2

  • What criteria are relevant

to your proj ect?

  • Other local ordinances to

consider?

  • Topography
  • Drainage area delineations
  • S
  • il, groundwater, geologic

constraints

  • Zoning restrictions
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Steps 3 and 4

  • What volume requirements

must be met? (Rev, WQv, CPv, Qp)

  • What BMPs can be used?
  • Incorporate LID into your

proj ect at the initial design stages, before building layouts are finalized

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Steps 5 and 6

  • Develop conceptual design
  • Coordinate with review

agencies

  • Collect more data and

revise as necessary

  • Move forward with a design

that meet standards 1-9

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Important Sections of the Manual Relevant to Each Standard

  • S

tandard 1 – refer to Chapt. 3.3.1, Chapt. 4, and Appendix A

  • S

tandard 2 – refer to Chapt. 3.3.2, Chapt. 4.6 (S W Credit), Chapt. 5, App. F (specs) and App. H.1 (soil testing)

  • S

tandard 3 – refer to Chapt. 3.3.3, Chapt. 4.6 (S W Credit), Chapt. 5, Chapt. 6, App. B (landscaping), App. F (specs), App. H.3 (pollutant loading analyses), and App. J (TAP)

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Cont’d

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tandard 4 – refer to Chapt. 3.3.4, Chapt. 5 & 7, App. D (design exmp), App. H.4 (short-cut sizing), App. I (River/ S tream Order), and App. K (H/ H Modeling Guidance)

  • S

tandard 5 – refer to Chapt. 3.3.5 and 3.3.6, Chapt. 5 & 7, App. D, App. I (River/ S tream Order), and App. K (H/ H Modeling Guidance)

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Cont’d

  • S

tandard 6 – refer to Chapt. 3.2.6, App. C (retrofit options)

  • S

tandard 7 –

  • App. G (Pollution prevention

and source control)

  • S

tandard 8 – refer to Tables 3-2 and 3-3,

  • Chapt. 5
  • S

tandard 9 –

  • Chapt. 3.2.9
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Steps 7 and 8

  • Develop appropriate ES

C plan to meet standard 10

  • Develop appropriate O&M

plan to meet standard 11

  • S

pecific requirements in Chapters 5-7

  • Add’ l guidance in App. E
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Step 9

  • Final Plan meeting all

requirements Refer to Appendix A throughout design process

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