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Drainage District, as appropriate), and other pertinent regulatory or enforcement <br />agencies. <br />PART 2 - MATERIALS AND INSTALLATION <br />2.1 GENERAL <br />A. Polyacrylamide: As required in Paragraph 1.3.C, place polyacrylamide (PAM) on <br />bare ground to reduce the potential for erosion and cover it with hay, jute, or mulch. <br />PAM may also be used in water bodies to remove turbidity. In all cases, use the <br />anionic form of polyacrylamide that does not stick to fish gills. For PAM information <br />and its proper application, a contact is Applied Polymer Systems, Inc., (678) 494- <br />5998, www.siltstop.com. <br />B. Staked Silt Fences: <br />1. General: Use silt fences to control runoff from the construction site where the <br />soil has been disturbed. <br />2. Installation: Install per the manufacture's recommendations and as specified <br />herein. In general, install the silt fence in a manner that allows it to stop the <br />water long enough for the sediment to settle while the water passes through <br />the silt fence fabric. All supporting posts shall be on the down-slope side of <br />the fencing. Place the bottom of the fabric 6 -inches minimum, under <br />compacted soil to prevent the flow of sediment underneath the fence. Place <br />silt fences away from the toe of slopes. Otherwise, work shall conform to <br />Section 104 of the Florida Department of Transportation Standard <br />Specifications for Road and Bridge Construction. <br />3. Product: All material shall be new and unused. Use FDOT Types III through <br />IV silt fences where large sediment loads are anticipated, where slopes are <br />1:2 (vertical: horizontal) or steeper, or as directed by the ENGINEER; <br />otherwise use FDOT Type II silt fence. <br />C. Turbidity Barriers: <br />1. General: Use turbidity barriers to control sediment contamination of <br />rivers, lakes, ponds, canals, etc. <br />2. Installation: Install per the manufacturer's recommendations and per Section <br />104 of the Florida Department of Transportation Standard Specifications for <br />Road and Bridge Construction unless directed otherwise by the ENGINEER. <br />3. Product: All material shall be new and unused. The turbidity barrier shall be <br />a pervious barrier and the fabric color shall be yellow. Use staked turbidity <br />barriers in water less than one -foot deep. Use floating turbidity barriers in <br />water one -foot or deeper. <br />D. Sedimentation Control From Dewatering or Pumping Operations Using Filter Bags: <br />1. Filter bags shall be manufactured using a polypropylene non -woven <br />geotextile and sewn by a double -needle machine, using a high strength nylon <br />thread. The bag shall have a fill spout large enough to accommodate a 4 - <br />inch pump discharge hose. Straps shall be attached to the bag to secure the <br />hose and prevent pumped water from escaping without being filtered. <br />01025-8 Technical Specifications <br />F:\Public Works\ENGINEERING DIVISION PROJECTS\1362-OId Dixie Hwy_Highland Dr\1-Admin\Bid DocumentsWlaster Contract <br />Documents\Technical Specifications.doc <br />