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Figure 11-4.2.13 Silt Fence Installation by Slicing Method <br />Ponding height max. 24" <br />Attach fabric to <br />upstream side of post <br />FLOW —► <br />Drive over each side of <br />silt fence 2 to 4 times <br />with device exerting 60 <br />p.s.i. or greater <br />100% <br />POST SPACING: <br />7' max. on open runs <br />4' max. on pooling areas <br />POST DEPTH: <br />As much below ground <br />as fabric above ground <br />100% <br />No more than 24" of a 36" <br />fabric is allowed above ground <br />— Operation <br />Horizontal chisel point <br />(76 mm width) <br />Top of Fabric <br />Belt <br />top+8" <br />1 <br />Diagonal attachment <br />doubles strength <br />Attachment Details: <br />• Gather fabric at posts, if needed. <br />• Utilize three ties per post, all within top 8" <br />of fabric. <br />• Position each tie diagonally, puncturing <br />holes vertically a minimum of 1" apart. <br />• Hang each tie on a post nipple and tighten <br />securely. Use cable ties (50 lbs) or soft <br />wire. <br />Roll of silt fence <br />Slicing blade <br />(18 mm width) <br />Vibratory plow is not acceptable because of horizontal compaction <br />DEPARTMENT OF <br />ECOLOGY <br />State of Washington <br />Fabric <br />above <br />ground <br />200 - <br />300mm <br />F <br />Post <br />installed <br />after <br />compaction <br />Silt Fence <br />Completed Installation <br />NOT TO SCALE <br />Figure II-4.2.13 <br />Silt Fence Installation by Slicing Method <br />Revised November 2015 <br />Please see http✓Avww.ecy.wa.gov/copyrrght.html for copyright notice including permissions, <br />limitation of liability, and disclaimer. <br />2014 Stoanwater Management Manual for Westem Washington <br />Volume 11 - Chapter 4 - Page 374 <br />