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DocuSign Envelope ID: F52521 E7-10C1-43F9-B62F-C1 E599A5D572 <br /> a <br /> Figure 6.17d Temporary Channel Liners; Washington State Department of Ecology <br /> Excavate channel to design <br /> Overlap 6" min. grade and cross-section <br /> r. <br /> Design depth <br /> Longitudinal <br /> anchor trench <br /> Overcut channel 2"to allow bulkin r IAL i JA <br /> during seedbed preparation <br /> 6 J <br /> Typical installation <br /> with erosion control <br /> blankets or turf <br /> reinforcement mats <br /> 6„ 6;, <br /> Intermittent check slot Longitudinal anchor trench <br /> Shingle-lap spliced ends or begin new <br /> roll in an intermittent check slot <br /> Prepare soil and apply seed before <br /> installing blankets, mats or other <br /> temporary channel liner system 3 <br /> f <br /> NOTES: <br /> 1. Design velocities exceeding 2 ft/sec require temporary blankets,mats or similar liners to protect <br /> seed and soil until vegetation becomes established. <br /> 2. Grass-lined channels with design velocities exceeding 6 ft/sec should include turf reinforcement <br /> mats <br /> 6.17.10 Rev.6/06 <br />