Module 6: Design Process Preliminary Field Review Preliminary Erosion and Sediment Control Design Report, including Preliminary NOI Package Alignment and

Module 6: Design ProcessModule 6: Design Process

Preliminary Field Review

Preliminary Field Review

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


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



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)


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



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)


Incorporate erosion and sediment control plans into construction plans package

Incorporate NOI and SWPPP into construction package

Preliminary Field ReviewPreliminary Field Review




Erosion and Sediment Control Plan Sheets for Plan-in-HandErosion and Sediment Control Plan Sheets for Plan-in-Hand





Plan-in-Hand ReviewPlan-in-Hand Review

Finalization of Erosion and Control Plan SheetsFinalization of Erosion and Control Plan Sheets


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


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


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)


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