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Figure 11-3.23: 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 />sit fence 2 to 4 times <br />with device exerting 60 <br />p.s.i. or greater <br />POST SPACING: <br />T 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% compaction <br />1001,o compaction <br />No more than 24" of a 36" <br />fabric is allowed above ground <br />--w--- Operation <br />ill-lii-:ice <br />Horizontal chisel point <br />(76 mm width) <br />Top of Fabric i <br />Belt T <br />top 8" <br />Diagonal attachment <br />doubles strength <br />Attachment Details: <br />• Gather fabric at posts, if needed. <br />• Utilize three ties per post, all within lop 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 M Ibs) or soft <br />wire. <br />Roll of silt fence <br />Slicing blade <br />(18 mm width) <br />200 - <br />- 300mrn <br />Vibratory plow is not acceptable because of horizontal compaction <br />l <br />i <br />[ <br />jDEPARTMENT OF <br />IECOLOGY <br />I <br />!Slate of Vk/astiingtor <br />Post <br />installed <br />after <br />compaction <br />d Silt Fence <br />Completed Installation <br />NOT TO SCALE <br />Silt Fence installation by Slicing Method <br />Revised June 2016 <br />Please see http./AWw.eCy. wa.govloopyright.html for copyright notice including permissions, <br />limitation of liability, and disclaimer_ <br />2019 Stormwater Management Manual for Western Washington <br />Volume 11 - Chapter 3 - Page 375 <br />