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enforcement agencies . PART 2 - MATERIALS AND INSTALLATION 2 . 1 GENERAL A . Polyacrylamide : As required in Paragraph 1 . 3 . C , place polyacrylamide ( PAM ) on bare ground to reduce the potential for erosion . PAM may also be used in water bodies to remove turbidity . Use the anionic form of polyacrylamide that does not stick to fish gills . For PAM information and its proper application , contact Applied Polymer Systems , Inc . , ( 678 ) 494 - 5998 , www . siltstop . com . Be Staked Silt Fences : 1 . General : Use silt fences to control runoff from the construction site where the soil has been disturbed . 2 . Installation : Install per the manufacture ' s recommendations and as specified herein . In general , install the silt fence in a manner that allows it to stop the water long enough for the sediment to settle while the water passes through the silt fence fabric . All supporting posts shall be on the down - slope side of the fencing . Place the bottom of the fabric 6 - inches minimum , under compacted soil to prevent the flow of sediment underneath the fence . Place silt fences away from the toe of slopes . Otherwise , install in accordance with FDOT Index No . 102 . 3 , Product : All material shall be new and unused . Use FDOT Types II through IV silt fences where large sediment loads are anticipated , where slopes are 1 : 2 (vertical : horizontal ) or steeper , or as directed by the ENGINEER ; otherwise use FDOT Type III silt fence . ( a ) For FDOT Type III Silt Fence - ACF Environmental , Catalog No . 360800000 , Florida DOT Silt Fence . U . S . Sieve = 30 , tensile strength = 120 pounds . The heavy-duty filter fabric shall be pre -attached to 48 - inch long stakes on 6 -foot centers . ( 1 - 800 -448 - 3636 ) . ( b ) For FDOT Type IV Silt Fence , modify the above Catalog No . 360800000 to comply with FDOT Index No . 102 . ( c ) Or equivalent . C . Turbidity Barriers : 1 . General : Use turbidity barriers to control sediment contamination of rivers , lakes , ponds , canals , etc . 2 . Installation : Install per the manufacturer' s recommendations and per FDOT Index No . 103 unless directed otherwise by the ENGINEER . 3 , Product : All material shall be new and unused . The turbidity barrier shall be a pervious barrier and the fabric color shall be yellow . a . Parker Systems , Inc . ( 1 - 866 -472 - 7537 ) , model Type II or Type I b . Or equivalent . D . Sedimentation Control From Dewatering or Pumping Operations Using Filter Bags : 1 . Remove silt , sediment , and other particles from dewatering or pumping applications using a filter bag . The bag shall be manufactured using a polypropylene non -woven geotextile and sewn by a double - needle machine , 01025 -8 Technical Specifications F :\Public Works\ ENGINEERING DIVISION PROJECTS\ 1136-6th Ave SW —Culvert Replacement N of 23rd St SW\Admim\Contract Documents\Technical Specification s . doc