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Figure 11-3.26: Cross Section of Sediment Trap <br /> Surface area determined 4'Min. <br /> at top of weir <br /> 1'Min. Overflow <br /> `_ 1'Min. <br /> •�L177,-. 0iYagr;-1,40! 1'Min. <br /> 3.5'-5' <br /> Q'} 1.5'Min. <br /> Flat Bottom <br /> 3/"-1.5" <br /> Washed gravel Discharge to <br /> Note:Trap may be formed by berm or by Geotextile stabilized <br /> conveyance, <br /> partial or complete excavation. 2"-4"Rock outlet,or level <br /> Rip Rap spreader <br /> NOT TO SCALE <br /> Cross Section of Sediment Trap <br /> Revised June 2016 <br /> DEPARTMENT OF <br /> ECOLOGY Please see http://www.ecy.wa.govicopyrighthiml for copyright notice including permissions, <br /> State of Washington limitation of liability,and disclaimer. <br /> 2019 Stormwater Management Manual for Western Washington <br /> Volume 11-Chapter 3-Page 386 <br />