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. Chipped site vegetation, composted mulch, or wood -based mulch (hog fuel) are acceptable <br />materials to construct brush barriers. <br />A 100 percent biodegradable installation can be constructed using 10-ounce burlap held in <br />place by wooden stakes. <br />. Figure II-3.20: Brush Barrier depicts atypical brush barrier. <br />Maintenance Standards <br />There shall be no signs of erosion or concentrated runoff under or around the barrier. If con- <br />centrated flows are bypassing the barrier, it must be expanded or augmented by toed -in filter <br />fabric. <br />. The dimensions of the barrier must be maintained. <br />2019 Stormwater Management Manual for Western Washington <br />Volume 11 - Chapter 3 - Page 366 <br />