Erosion & Sediment Control

1. Erosion& Sediment Control

2. Erosion Impacts

3. Pollution

4. Hydraulic Modification Silted up pond

5. Ecological Impacts

6. Property Damage Impacts to neighboring property

7. Construction Costs and Schedule • Stop work ordered for noncompliance • Fines/penalties for noncompliance • Repair damage to adjacent properties • Missed deadlines, litigation, other additional work

8. Legal Issues

9. Erosion • Erosion can happen • Naturally (No Control) • Accelerated by human activities • Unrestricted development • Removal of surface cover • Increased imperviousness • Poor Stewardship

10. Types of Erosion • Wind-Significant in arid and desert areas • Water-Significant in areas that receive moderate to heavy rainfalls

11. Why ?{Erosion and Sediment Controls (ESC) on construction projects} • 1) NPDES Regulations • 2) FHWA Requirements (Title 23)

12. How ? • By issuing NPDES Construction Permits either Federally or through delegated State NPDES programs • Local building and grading permits and ordinances at the local levels

13. Who ?(Regulates) • EPA-Federal • Delegated States (Oregon) • Local Governments (Agents for the State of Oregon)

14. Who issues permits in Oregon? • State of Oregon is a delegated state with authority to issue Federal NPDES permits • OR-Dept of Environmental Quality and its authorized representatives • Oregon can issue both general and individual NPDES permits

15. Who is required to obtain a permit? • Any individual or entity involved in disturbing one acre or more of land is required to obtain a permit from OR-DEQ or its authorized agent • At the local level erosion permit requirements are much more stringent

16. Type of permits available • NPDES, General 1200-C Permit (private individuals and entities in the construction business) • NPDES, General 1200-CA Permit (Public Agencies only)

17. Common Question • Can local agencies use ODOT’s permit? • No, local agencies cannot use ODOT’s 1200-CA permit • Local agencies should obtain a 1200-C/CA permit from OR-DEQ or its authorized agent (City, County, etc.) when working on a project with 1 or more acres of disturbance

18. How can I get a permit • By filing an application with OR-DEQ or it’s authorized agent such as a city or a county • Requirements: • Completed application • Signed LUCS* from the City or County • Erosion and Sediment Control Plan (ESCP) • Fees * Land Use Compatibility Statement

19. How do I comply with permit requirements? • Prepare a good ESC Plan • Consider location (proximity to waterways), soil conditions, topography, climatic conditions, etc • Implement the Plan • Prepare a schedule and implement measures as per schedule • Inspect and maintain ESC measures as needed on a regular basis • Rely on knowledgeable inspectors and maintenance crew • Inspect measures before and after storm events

20. Basic Planning Considerations • Prevention (Source Control) • Fit site construction to the terrain • Preserve natural vegetation to the extent possible • Time grading to minimize exposure • Phase work to limit disturbed area

21. Basic Planning Considerations Cont. • Control Methods • Divert runoff away from work area • Cover exposed areas ASAP • Minimize length and steepness of slopes • Reduce runoff velocities • Prepare drainage ways and outlets • Trap sediment on site

22. Basic Planning Considerations Cont. • Inspection, Maintenance, Documentation, and Reporting • Inspect measures in place after storm events • Replace or repair measures immediately or as soon as possible • Document inspection observations • Report/Retain documentation on site

23. Wind Erosion • It is very important to consider dust controls (during summer months in the West and year round East of the Cascades) • Project location dictates the need for the extent of dust controls (sensitive areas) • Near water bodies-Environmental Issues • Near residential homes-Health & Safety Issues • Near Highways-Safety Issues

24. Dust Control

25. Dust Control

26. Dust Control Typical Dust Control Measures • Vegetative cover • Irrigation • Mulch • Spray-on adhesives

27. Mulch & Hydroseed

28. Spray-on adhesive

29. Water Erosion • Important in Oregon (West of the Cascades) because of: • Climatic conditions (7-9 months of rain) • Water bodies (large numbers) • Topography (hilly terrain) • Types of Soils (significant amount of clay soils) • Amount of rainfall (average of 40”) • Fish & Aquatic resources

31. Temporary Slope Drain

32. Mulch & Hydroseed

33. Soil Stabilization Blankets and Matting

34. Stabilized Construction Entrance Stabilized Construction Entrance

35. Storm Drain Inlet Protection

36. Check Dams

37. Temporary Sediment Basin

38. Ideal Sediment Basin

39. ESC-RESOURCES • Standards & Specifications • Section 00280-ESC • Section 01030-Landscaping • Section 01040-Planting • Erosion Control (EC) Manual • Guidance for internal & external staff • ESC Processes • ESC BMP’s • ESC Design Guidelines

40. ESC-Resourceshttp://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/erosion_control.shtmlESC-Resourceshttp://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/erosion_control.shtml • Erosion Control Field Manual • Simple and portable format of EC manual • ESC BMP Guidance • ESC Inspection Guidance • Landscape Guidance • Qualified Products List • List of ODOT approved ESC products • Products have been reviewed by ODOT staff for ODOT applicability before they are put on the list • Only products on this list should be used on ODOT projects unless otherwise approved by PM

41. ODOT Trainings • Erosion and Sediment Control Trainings-Yearly • Two training sessions offered in 2009 • No more planned for this year • If there is enough interest more may be arranged

42. Raghu Namburi ODOT-Erosion and Landscape Program Coordinator Geo-Environmental Section 355 Capitol Street, NE, Suite 314A Salem, OR-97301 (503) 986-3551 raghu.namburi@odot.state.or.us