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. Grade of water bar and angle: Select an angle that results in a ditch slope less than 2 percent. <br />. Install the water bar as soon as the clearing and grading is complete. When utilities are being <br />installed, reconstruct the water bar as construction is complete in each section. <br />. Compact the water bar ridge. <br />. Stabilize, seed, and mulch the portions that are not subject to traffic. Gravel the areas crossed <br />by vehicles. <br />. Note that BMP C208: Triangular Silt Dike (TSD) can be used to create the ridge for the water <br />bar. <br />Maintenance Standards <br />Periodically inspect water bars after every heavy rainfall for wear and erosion damage. <br />. Immediately remove sediment from the flow area and repair the dike. <br />. Check outlet areas and make timely repairs as needed. <br />. When permanent road drainage is established and the area above the temporary water bar is <br />permanently stabilized, remove the dikes and fill the channel to blend with the natural ground, <br />and appropriately stabilize the disturbed area. <br />2019 Stormwater Management Manual for Western Washington <br />Volume 11 - Chapter 3 - Page 339 <br />