Module 6: Design Process Preliminary Field Review Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package Alignment and Grade Review 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 Review Finalization of Erosion and Control Plan Sheets Reference Manual Page 187

n Integrate BMPs into the Design Process n Identify Design Tools for BMP Selection Learning Objectives

Erosion and Sediment Control MDT Design Process n Consider BMPs early in the design process n Design process outcome should be completed NOI package and SWPPP

Preliminary Field Review n On-site n Field scoping n Identification of issues n Integration of BMP considerations

Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package n Vicinity map n Delineation of potential erosion and sedimentation areas n Preliminary soil investigation n Generate erosion and sediment control schedule n Identification of existing control practices n Prepare preliminary NOI package (NOI form and SWPP)

Alignment and Grade Review n Incorporate preliminary erosion and sediment control design n Incorporate preliminary NOI and SWPPP

Erosion and Sediment Control Plan Sheets for Plan-in-Hand n Select BMPs that best apply to the reduction of erosion and sedimentation n Incorporate geotechnical information into preliminary plans n Identify existing stormwater control measures

Erosion and Sediment Control Plan Sheets for Plan-in-Hand (cont.) n Revise preliminary erosion and sediment control plans n Revise preliminary NOI package and SWPPP n Identify additional stormwater permits necessary n Prepare preliminary erosion and sediment construction schedule

Plan-in-Hand n Incorporate revised preliminary erosion and sediment control design. n Incorporate revised preliminary NOI and SWPPP n Additional stormwater permitting documents

Finalization of Erosion and Sediment Control Plan Sheets n Incorporate revisions from plan-in-hand n Incorporate final revision from other sections

Finalization of Preliminary NOI Package and Other Applicable Permitting Documents n Finalize preliminary NOI n Finalize preliminary SWPPP n Finalize additional stormwater permitting documents n 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) n Incorporate erosion and sediment control plans into construction plans package n Incorporate NOI and SWPPP into construction package

Preliminary Field Review Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package Alignment and Grade Review 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 Review Finalization of Erosion and Control Plan Sheets Reference Manual Page 187

Erosion and Sediment Control Design Tools n BMP Selection Guideline n Rules of Thumb n NOI Package Tools n BMP Unit Cost Rate Schedule (Appendix A of the Reference Manual)

Erosion and Sediment Control Design Process Identify site specific erosion concerns n Assess if erosion is likely to occur at the site

BMP Selection Guidelines Erosion by Water Reference Manual Page 193

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 n Identify type of erosion that could occur n Use the BMP selection guideline table in the Erosion and Sediment Control BMP manual (page 196 in the Reference Manual) n Select appropriate BMPs for the construction site

BMP Selection Criteria Example from Table of the BMP Manual (page 196)

BMP Selection Criteria n Use a “toolbox approach” for selection of BMPs for each site n Use multiple BMPs in conjunction with each other to create an integrated design n Integrate surface stabilization with sediment control BMPs

BMP Vegetation Considerations n Protect existing vegetation whenever possible n Phase vegetation disturbing activities to minimize duration of exposed soil

BMP Selection Considerations Snowmelt vs. Intense Rainfall

RAIN vs SNOW EAST vs WEST.html Weather Impacts

Western vs. Eastern Montana Western Montana n Extensive snowmelt runoff n inches of precipitation per year Eastern Montana n Rainfall events can produce significant runoff n inches of precipitation per year

n Unprotected cut slope n Significant erosion n Significant off site sedimentation Case Study

Possible Implementations n SS-9 along top of slope n SS-3, 6, 7, 8, 12, 13, or 15 on slope n SC-5 or 6 on slope n SC-4, 6 or 11 in ditch n SC-2 or 3 at outfall Case Study Conclusion

Erosion and Sediment Control Rules of Thumb n Slope measurement tables (Page 199 in Reference Manual) n Slope inclination conversion tables (Page 200 in Reference Manual) n Seed application rate tables (Found on detailed drawings for SS4 and SS15)

Erosion and Sediment Control Design Process NOI Package Tools n Reference Manual contains NOI form, SWPPP form, NOT form n Instructions for completing forms provided

n BMP selection is required during the Design Process n Design Tools are available in the Reference Manual n BMP Selection Criteria are provided n NOI Forms and instructions are included in the Reference Manual Conclusion

Questions and Discussion