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and Sediment Control Inspector's Manual . <br />Washing <br />If conditions on the site are such that most of the mud is not removed by the vehicles <br />traveling over the gravel, then the tires of the vehicles must be washed before entering a <br />public road. Wash water must be carried away from the entrance to a settling area to <br />remove sediment (See Plate 4.03b). A wash rack may also be used to make washing <br />more convenient and effective (See Plate 4.03c). <br />Location <br />The entrance should be located to provide for maximum utility by all construction vehicles. <br />Construction Specifications <br />The area of the entrance should be cleared of all vegetation, roots, and other objectionable <br />material. A geotextile should be laid down to improve stability and simplify maintenance. <br />The gravel shall then be placed over the geotextile to the specified dimensions. <br />Any drainage facilities required because of washing should be constructed according to <br />approved specifications. If wash racks are used, they should be installed according to <br />manufacturer's specifications. <br />Maintenance <br />The entrance shall be maintained in a coridition which will prevent tracking or flow.of mud <br />onto public rights-of-way. This may require periodic top dressing with 2 -inch (5 cm) stone, <br />as conditions .demand, and repair and/or clean out of any structures used to trap <br />sediments; All materials spilled, dropped, washed, ortracked from vehicles onto roadways <br />or into storm drains must be removed immediately. Look for signs of trucks and trailered <br />equipment "cutting corners" where the gravel meets the roadway. Sweep the .paved road <br />daily for sediments and stones. <br />Plate 4.03c Construction Entrance with Wash Rack <br />Source: 1983 Marviand Standards for Soil Erosion and Sediment Control <br />4-10 <br />