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Erosion Control Workshop

Erosion Control Workshop. Oshkosh – January 16 Little Chute – January 23 Green Bay – January 30. Northeast Wisconsin Stormwater Consortium. Surface Runoff. Surface Runoff. What is the Number 1 Pollutant that can get into our waterways and harm or kill aquatic life?. Gas. Manure.

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Erosion Control Workshop

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  1. Erosion Control Workshop Oshkosh – January 16 Little Chute – January 23 Green Bay – January 30 Northeast Wisconsin Stormwater Consortium

  2. Surface Runoff

  3. Surface Runoff

  4. What is the Number 1 Pollutant that can get into our waterways and harm or kill aquatic life?

  5. Gas Manure Car Exhaust Soil ? Pesticides Sewage Leaves Pet Waste Fertilizer Heat Industrial Waste Oil Litter

  6. Top Pollutant SOIL #1

  7. Sources of Sediment

  8. Agricultural Sources Agricultural Sources

  9. Urban Sources

  10. Construction Site Sources

  11. Land Uses Lower Fox River Watershed - 2012 Source: WDNR - Lower Fox River Basin TMDL

  12. Sediment Delivery Rates Lower Fox River Watershed - 2012 Source: WDNR - Lower Fox River Basin TMDL

  13. Annual Sediment Delivery Load Lower Fox River Watershed - 2012 176,434,787 lbs/yr Source: WDNR - Lower Fox River Basin TMDL Photo Credit: Steve Seilo, Photodynamix

  14. Sediment from Construction Sites Lower Fox River Watershed - 2012 7,015,420 lbs/yr Source: WDNR - Lower Fox River Basin TMDL

  15. Sediment from Construction Sites Sediment Delivery 1 acre construction = 75 acres cropland Source: WDNR - Lower Fox River Basin TMDL

  16. Effects of Sediment • Environment • Economy

  17. Environmental Impacts • Water Quality • Turbidity • Abrasion (fish gills) • Silt • Scouring of Stream Beds

  18. Water Quality • Pollutants • Phosphorus • Oils/Greases • Metals • Salts

  19. Water Quality • Low Dissolved Oxygen • Algae Blooms

  20. Habitat

  21. Habitat

  22. Habitat

  23. Habitat

  24. Economic Reasons For every dollar not spent on Erosion Control $10 to $15 are spent on off-site impacts

  25. Economic Reasons

  26. Economic Reasons • Property Loss • Sedimentation - Dredging • Sedimentation - Dredging

  27. Regulatory Background

  28. Regulatory Background Federal Clean Water Act 1972

  29. Regulatory Background Stormwater Discharge Permit - 1988 • Implemented in multiple phases: • Industrial Stormwater Discharge Permits • Construction Activities disturbing 5 acres or more • Municipal Stormwater Discharge Permits in 2 phases • Phase I (cities over 100,000) • Phase II (cities 10,000 – 99,999) – 2005

  30. Regulatory Background What is an MS4? Municipal Separate Storm Sewer System • To meet the requirements of the Federal Clean Water Act MS4s are permitted in Wisconsin through NR 151 & 216

  31. Regulatory Background Construction Site Pollutant Control Permittee (MS4) shall develop, implement and enforce a program to reduce the discharge of sediment and construction materials from construction sites.

  32. Regulatory Background Construction Site Pollutant Control • Control the sediment load coming off the construction sites • Control the total suspended solids that would normally run off the site • Maintain or reduce the peak runoff discharge rate • Infiltrate water running off the site • Maintain protective areas • Remove all visible sheen from petroleum product runoff

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