1. 1 Course Highlights –Introduction –Planning for Erosion and Sediment Control –Erosion Control BMP Implementation –Sediment Control BMP Implementation –Class Exercise –Field Demonstration of BMPs

2. 2 Definition Temporary soil stabilization BMP defined – Interim control measures which are installed or constructed to control soil erosion and which are not maintained after project completion Permanent soil stabilization BMP defined – Measures which are installed or constructed to control soil erosion and which are maintained after project completion Soil Stabilization BMPs

3. 3 Temporary Soil Stabilization BMPs involve preparing the soil surface and applying one of the approved Department BMPs or combination of BMPs, to disturbed soil areas Soil Stabilization BMPs

4. 4 Temporary Soil Stabilization BMPs are designed to eliminate or reduce the erosion of disturbed soil areas, and provide dust control during the process of construction and reduce the transport of sediment and pollutants by storm water Soil Stabilization BMPs

5. 5 In this section we will discuss the following temporary soil stabilization BMPs –SS-3 Hydraulic Mulch –SS-4 Hydroseeding –SS-5 Soil Binders –SS-6 Straw Mulch –SS-7 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats –SS-8 Wood Mulching Soil Stabilization BMPs

6. 6 These are referred to as “BMP Alternatives” This means that they all have the same general function: Binding together the soil particles within or coating the surface of a disturbed soil area in order to protect the disturbed soil area from the erosive forces of water and wind SS-3 Hydraulic Mulch SS-4 Hydroseeding SS-5 Soil Binders SS-6 Straw Mulch SS-7 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-8 Wood Mulching Soil Stabilization BMPs

7. 7 Hydraulic Mulch SS-3 What is it? –A mixture of wood mulch, and water – with or without combinations of stabilizing emulsions, and /or, synthetic fibers

8. 8 Hydraulic Mulch SS-3 How is it applied? –It’s mixed into a slurry and applied using hydro-mulching equipment

9. 9 Hydraulic Mulch SS-3 There are four types of hydraulic mulches that we are going to focus on? –Hydraulic Mulch –Hydraulic Matrix –Bonded Fiber Matrix –Mechanically Bonded Fiber Matrix

10. 10 Hydraulic Mulch SS-3 Hydraulic Mulch –Shredded wood fibers, water and/or a stabilizing emulsion –Mixed together and applied with hydro-mulching / hydro seeding equipment –Sprayed onto disturbed soil at a prescribed rate as a liquid slurry –100% biodegradeable

11. 11 Hydraulic Mulch SS-3 Hydraulic Matrix –Shredded wood fiber, water and a stabilizing emulsion –Mixed together and applied with hydro-mulching / hydro seeding equipment –Sprayed onto disturbed soil at a prescribed rate as a liquid slurry –100% biodegradeable

12. 12 Hydraulic Mulch SS-3 Bonded Fiber Matrix (BFM) –A bonded fiber matrix consisting of strands of continuous elongated wood fibers combined with a stabilizing emulsion and water –Mixed together and applied with hydro-mulching / hydro seeding equipment –Sprayed onto disturbed soil at a prescribed rate as a liquid slurry –100% biodegradeable

13. 13 Hydraulic Mulch SS-3 Mechanically Bonded Fiber Matrix (M-BFM) –A bonded fiber matrix consisting of strands of continuous elongated wood fibers and/or mechanically (interlocking) bonded synthetic fibers combined with a stabilizing emulsion and water –Mixed together and applied with hydro-mulching / hydro seeding equipment –Sprayed onto disturbed soil at a prescribed rate as a liquid slurry –100% biodegradeable and photodegradable

14. 14 Hydraulic Mulch SS-3 Standards and Specifications Surface preparation –Roughen soil surface with small furrows along the contours Ripping, Sheepsfoot, Track Walk –Refer to Standard Specification 20-2.01 and 20-3.02 –Sprayed onto disturbed soil at a prescribed rate as a liquid slurry –100% biodegradeable

15. 15 Hydraulic Mulch SS-3 How will hydraulic mulches work on your site? Let’s look at some specifics

16. 16 Hydraulic Mulch SS-3

17. 17 Hydraulic Mulch SS-3

18. 18 Hydraulic Mulch SS-3

19. 19 Hydraulic Mulch SS-3

20. 20 Hydroseeding SS-4 What is it? –The process of vegetating disturbed soil areas by applying a mixture of stabilizing emulsion, seed, fertilizer, and wood fiber to disturbed soil

21. 21 How is it applied? –It’s mixed into a slurry and applied using hydro-mulching equipment Hydroseeding SS-4

22. 22 It can also be applied as: –A stand alone process – seed and emulsion –Mixed with Hydraulic Mulch –Mixed with Soil Binders –Applied prior to application of Straw Mulch –Applied prior to application of Rolled Erosion Control Products –Applied prior to application of Wood Mulch Hydroseeding SS-4

23. 23 Standards and Specifications Surface preparation –Roughen soil surface with small furrows along the contours Ripping, Sheepsfoot, Track Walk –Refer to Standard Specification 20-2.01 and 20- 3.02 Hydroseeding SS-4

24. 24 Standards and Specifications Material and seed mixture –Must be approved by DSWC and Landscape Architect –Refer to Standard Specification 20-2.10 and project Special Provisions Hydroseeding SS-4

25. 25 How will hydroseeding work on your site? Let’s look at some specifics Hydroseeding SS-4

26. 26 Hydroseeding SS-4

27. 27 Hydroseeding SS-4

28. 28 Hydroseeding SS-4

29. 29 What is it? –An emulsion categorized as plant based (long and short lived), polymeric emulsion blend (acrylic polymers), or cementious-based binders that penetrates the top soil and binding the soil particles together –Tackifiers are a soil binder made up of short lived plant based materials and highly diluted polymeric emulsions, and cementious-based binders – limited durability –Heavy duty soil binders are made up of long lived plant based materials more concentrated polymeric emulsions, and cementious-based binders – durable, long term stabilization Soil Binders SS-5

30. 30 How is it used? –As a stand alone stabilizer or as a stabilizing emulsion in hydraulic and straw mulches where it acts as a binding agent for the mulch How is it applied? –It’s mixed into a slurry and applied using hydro-mulching equipment –Sprayed from a water truck Soil Binders SS-5

31. 31 Standards and Specifications –Refer to Standard Specification 20-2.11 –Must be environmentally benign Soil Binders SS-5

32. 32 How will soil binders work on your site? Let’s take a closer look Soil Binders SS-5

33. 33 Soil Binders SS-5

34. 34 Soil Binders SS-5

35. 35 Soil Binders SS-5

36. 36 Soil Binders SS-5

37. 37 Soil Binders SS-5

38. 38 Soil Binders SS-5

39. 39 Straw Mulch SS-6 What is it? –The process of applying a uniform layer of straw over a disturbed soil area to temporarily stabilize the soil

40. 40 How is it applied? –By hand (labor intensive) or by mechanical blower Straw Mulch SS-6

41. 41 How is it secured to the ground? –Crimped or punched –Glued with a stabilizing emulsion Straw Mulch SS-6

42. 42 Standards and Specifications Material –Must be approved by DSWC or the RE –Straw mulch must be derived from barley, rice, or wheat –Refer to Standard Specification 20-2.06, 20-2.07, and 20-2.11 Straw Mulch SS-6

43. 43 Standards and Specifications Material –Must be approved by DSWC or the RE –Straw mulch must be derived from barley, rice, or wheat –Refer to Standard Specification 20-2.06, 20-2.07, and 20-2.11 Straw Mulch SS-6

44. 44 How will Straw mulch work on your site? Let’s look at some specifics Straw Mulch SS-6

45. 45 Straw Mulch SS-6

46. 46 Straw Mulch SS-6

47. 47 Straw Mulch SS-6

48. 48 What is it? –Rolled erosion control BMPs used to protect disturbed soil areas from erosion by water and wind –A high strength BMP that can be used as a stand alone BMP or used in conjunction with re-vegetation –Commonly used in channels Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

49. 49 What types are there and how are they used? –Geotextiles: Woven non-biodegradable polypropylene fabric. Can be used for soil stabilization and drainage control –Plastic Covers (plastic sheeting): Impervious, non-biodegradable. Uses include stockpiles and small areas requiring immediate attention –Netting: Plastic, or geotextiles. Plastic is photodegradable geosynthetic such as polypropylene, polyethylene, nylon, and/or PVC. Used to secure loose mulchs like straw to allow vegetation growth Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

50. 50 What types are there and how are they used? –Erosion Control Blankets: Can be biodegradable or biodegradable and photodegradable. Biodegradable blankets typically composed of fibers such as jute, straw, coconut or a combo of straw and coconut fibers. Biodegradable and photodegradable are made up of biodegradable fibers such as excelsior (curled wood fiber), wood, jute, straw, coconut or a combo of straw and coconut fibers, and photodegradable polypropylene or polyethylene. Used as a temporary soil stabilizer. Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

51. 51 What types are there and how are they used? –Mats or Turf Reinforcement Mats (TRMs): Can be biodegradable fiber and photodegradable synthetic netting or interwoven non- biodegradable geosynthetic material. Constructed to form a three- dimensional matrix. Used as a permanent soil stabilizer, and for difficult temporary situations. Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

52. 52 How are they applied? –Generally speaking they are rolled out on the disturbed soil and anchored down Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

53. 53 Standards and Specifications –Refer to Standard Specification 20-3.02 for soil surface preparation –Selection must be based on site-specific conditions –Selection must be approved by the RE or DSWC –A cert of compliance must be completed per Standard Specification 6-1.07 –To be effective BMP must maintain contact with the soil –Refer to Section 2.2.5 starting with page 5 of the temporary soil stabilization guide Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

54. 54 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

55. 55 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

56. 56 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

57. 57 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

58. 58 How will SS-7 work on your site? Let’s take a closer look Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

59. 59 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

60. 60 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

61. 61 Geotextiles, Plastic Covers, & Erosion Control Blankets/Mats SS-7

62. 62 Wood Mulch SS-8 What is it? –The process of applying bark, shredded wood, and/or compost (recycled green material) to bare soil to reduce the potential for erosion from wind and water –Used primarily for landscaping

63. 63 Standards and Specifications –Landscape Architect should approve use of wood mulch –Refer to Standard Specifications 20-2.01, and 20-3.02 for soil surface preparation –Roughen soil surface with small furrows along the contours via ripping, sheepsfoot, track walk –If used as a temporary BMP the mulch must be removed prior to re-starting work Wood Mulch SS-8

64. 64 How will wood mulch work on your site? Let’s look at some specifics Wood Mulch SS-8

65. 65 Wood Mulch SS-8

66. 66 Wood Mulch SS-8

67. 67 Wood Mulch SS-8