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12* Sand Layer industrial <br />Water Membrane <br />Comoacted <br />Back Fill <br />Compacted <br />Soli mmSoil -^®|F^\Trevira^i <br />f r Spunbond <br />Figure 2 — TREVIRA SpunBond for Pond Liner SuDstrate <br />BENEFITS: <br />TREVIRA- Spunbond provides separation and <br />reinforcement, adding to the life of the pond <br />liner. <br />EROSION CONTROL <br />PROBLEM: <br />Extensive loss of fine grained soil along <br />streambeds or slopes resulting in high <br />maintenance costs of streambanks. <br />SOLUTION: <br />Place TREVIRA Spunbond on graded stream- <br />banks or shores. For shoreline and streambank <br />erosion control, Figures 3 and 4 illustrate the <br />use of TREVIRA Spunbond between riprap and <br />the native soil in conjunction with a granular <br />bedding layer. <br />Spunbond <br />Overlapped <br />Trevira* <br />Spunbond <br />tonefilL- <br />Soil/Securing <br />Pin <br />Figure 3 — TREVIRA Spunbond for Stream Lining <br />8/82 Rev. 2/83 <br />Spunbond <br />Overlapped <br />7^ <br />Trevira^ <br />Spunbond <br />Securing Pin <br />Figure 4 — TREVIRA Sounoond for Shore Lining <br />BENEFITS: <br />TREVIRA Spunbond provides the necessary <br />separation, filtration, reinforcement and planar <br />flow to significantly reduce the erosion of soil <br />beneath the stone cover, thereby reducing <br />maintenance costs. <br />Sediment controls utilizing TREVIRA Spunbond <br />include silt fences, stone berms, and sedimen­ <br />tation ponds. Sediment controls should not be <br />placed in main stream channels. Obstructing <br />channel flow can result in the loss of the sedi­ <br />ment control measure. Periodic cleaning and <br />maintenance is required to insure continuous <br />sediment control. <br />Silt fences utilizing TREVIRA Spunbond as il­ <br />lustrated in Figure 5 provide the necessary <br />filtration of fines carried in surface runoff. <br />Stone berms utilizing TREVIRA Spunbond as il­ <br />lustrated in Figure 6 provide an option to silt <br />fences. <br />Hill Side <br />ire Reinforced <br />with Spunbond <br />/ <br />Trevira* <br />Spunbond <br />Pigure 5 — TREVIRA SounDond for Sill Fences <br />LA-2 <br />« <br />#