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Module 6: Design ProcessModule 6: Design Process
Preliminary Field Review
Preliminary Field Review
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Alignment and Grade ReviewAlignment and Grade Review
Erosion and Sediment Control Plan SheetsErosion and Sediment Control Plan Sheets
Erosion and Sediment Control Plan Sheets for
Plan-in-Hand
Erosion and Sediment Control Plan Sheets for
Plan-in-Hand
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package
(SWPPP in NOI Package Utilizes Same Plan Sheets)
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package
(SWPPP in NOI Package Utilizes Same Plan Sheets)
Plan-in-Hand ReviewPlan-in-Hand Review
Finalization of Erosion and Control Plan SheetsFinalization of Erosion and Control Plan Sheets
Reference Manual Page 187
Integrate BMPs into the Design Process
Identify Design Tools for BMP Selection
Learning ObjectivesLearning Objectives
Erosion and Sediment Control MDT Design Process Erosion and Sediment Control MDT Design Process
Consider BMPs early in the design process
Design process outcome should be completed NOI package and SWPPP
Preliminary Field ReviewPreliminary Field Review
On-site
Field scoping
Identification of issues
Integration of BMP considerations
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Vicinity map
Delineation of potential erosion and sedimentation areas
Preliminary soil investigation
Generate erosion and sediment control schedule
Identification of existing control practices
Prepare preliminary NOI package (NOI form and SWPP)
Alignment and Grade ReviewAlignment and Grade Review
Incorporate preliminary erosion and sediment control design
Incorporate preliminary NOI and SWPPP
Erosion and Sediment Control Plan Sheets for Plan-in-HandErosion and Sediment Control Plan Sheets for Plan-in-Hand
Select BMPs that best apply to the reduction of erosion and sedimentation
Incorporate geotechnical information into preliminary plans
Identify existing stormwater control measures
Erosion and Sediment Control Plan Sheets for Plan-in-Hand(cont.)
Erosion and Sediment Control Plan Sheets for Plan-in-Hand(cont.)
Revise preliminary erosion and sediment control plans
Revise preliminary NOI package and SWPPP
Identify additional stormwater permits necessary
Prepare preliminary erosion and sediment construction schedule
Plan-in-HandPlan-in-Hand
Incorporate revised preliminary erosion and sediment control design.
Incorporate revised preliminary NOI and SWPPP
Additional stormwater permitting documents
Finalization of Erosion and Sediment Control Plan SheetsFinalization of Erosion and Sediment Control Plan Sheets
Incorporate revisions from plan-in-hand
Incorporate final revision from other sections
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Finalize preliminary NOI
Finalize preliminary SWPPP
Finalize additional stormwater permitting documents
Revise preliminary erosion and sediment control construction schedule
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package (SWPPP in NOI Package Utilizes Same Plan Sheets)
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package (SWPPP in NOI Package Utilizes Same Plan Sheets)
Incorporate erosion and sediment control plans into construction plans package
Incorporate NOI and SWPPP into construction package
Preliminary Field ReviewPreliminary Field Review
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package
Alignment and Grade ReviewAlignment and Grade Review
Erosion and Sediment Control Plan Sheets for Plan-in-HandErosion and Sediment Control Plan Sheets for Plan-in-Hand
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Finalization of Preliminary NOI Package and Other Applicable Permitting Documents
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package (SWPPP in NOI Package Utilizes Same Plan Sheets)
Completed Bid Package including Erosion and Sedimentation Control Plan Sheets and Preliminary NOI Package (SWPPP in NOI Package Utilizes Same Plan Sheets)
Plan-in-Hand ReviewPlan-in-Hand Review
Finalization of Erosion and Control Plan SheetsFinalization of Erosion and Control Plan Sheets
Reference Manual Page 187
Erosion and Sediment Control Erosion and Sediment Control
Design Tools
BMP Selection Guideline
Rules of Thumb
NOI Package Tools
BMP Unit Cost Rate Schedule (Appendix A of the Reference Manual)
Erosion and Sediment Control Design ProcessErosion and Sediment Control Design Process
Identify site specific erosion concerns
Assess if erosion is likely to occur at the site
BMP Selection Guidelines Erosion by Water BMP Selection Guidelines Erosion by Water
Reference Manual Page 193
BMP Selection Guidelines Available computer model BMP Selection Guidelines Available computer model
RUSLE Model used to estimate average annual soils loss BMP selection guidelines design tools
A=RKLSCP
BMP Selection Criteria BMP Selection Criteria
Identify type of erosion that could occur
Use the BMP selection guideline table in the Erosion and Sediment Control BMP manual (page 196 in the Reference Manual)
Select appropriate BMPs for the construction site
BMP Selection Criteria BMP Selection Criteria
ID BMP Name Primary Purpose Erosion Processes SC-1 Silt Fence Slow and filter runoff to
retain sediment Stream Bank, Wind, Snow, and Shoreline.
Example from Table 4.4.1-1 of the BMP Manual (page 196)
BMP Selection Criteria BMP Selection Criteria
Use a “toolbox approach” for selection of BMPs for each site
Use multiple BMPs in conjunction with each other to create an integrated design
Integrate surface stabilization with sediment control BMPs
BMP Vegetation Considerations BMP Vegetation Considerations
Protect existing vegetation whenever possible
Phase vegetation disturbing activities to minimize duration of exposed soil
BMP Selection ConsiderationsBMP Selection Considerations
Snowmelt vs. Intense Rainfall
RAIN vs SNOW
EAST vs WEST.html
Weather ImpactsWeather Impacts
Western vs. Eastern Montana Western vs. Eastern Montana
Western Montana
Extensive snowmelt runoff
10-120 inches of precipitation per year
Eastern Montana
Rainfall events can produce significant runoff
12-20 inches of precipitation per year
Unprotected cut slope
Significant erosion
Significant off site sedimentation
Case Study Case Study
Possible Implementations
SS-9 along top of slope
SS-3, 6, 7, 8, 12, 13, or 15 on slope
SC-5 or 6 on slope
SC-4, 6 or 11 in ditch
SC-2 or 3 at outfall
Case Study ConclusionCase Study Conclusion
Erosion and Sediment Control Rules of ThumbErosion and Sediment Control Rules of Thumb
Slope measurement tables (Page 199 in Reference Manual)
Slope inclination conversion tables (Page 200 in Reference Manual)
Seed application rate tables (Found on detailed drawings for SS4 and SS15)
Erosion and Sediment Control Design ProcessErosion and Sediment Control Design Process
NOI Package Tools
Reference Manual contains NOI form, SWPPP form, NOT form
Instructions for completing forms provided
BMP selection is required during the Design Process
Design Tools are available in the Reference Manual
BMP Selection Criteria are provided
NOI Forms and instructions are included in the Reference Manual
ConclusionConclusion
Questions and DiscussionQuestions and Discussion
Recommended