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r Chapter 4 -. Best Management Practices for Erosion and Sediment Control 4,03 T EMPCRARY GRAVEL CONSTRUCTION ENTRANCE & EXI (ES BMP 1101 ) r .Definition A stone stabilized pad located at points of vehicular ingress and egress on a construction site. Purpose To stabilize entrances to the construction site and reduce the amount of sediment transported onto public roads by motor vehicles or runoff. r Conditions Where Practice AaRlies Wherever traffic will be leaving a construction site and moving directly onto a public road or other paved area. r Planning Considerations Construction entrances provide an area where mud can be removed from construction vehicle tires before they enter a public road . If the action of the vehicle traveling over the gravel pad is not sufficient to remove most of the . mud; then the tires must be` washed ` before the. vehicle enters a public road . If washing is used ; provisions must be.made to intercept the wash water and trap the sediment before it is carried off-site. Constriction entrances should be used in conjunction with the stabilization of construction roads to ` reduce the amount of mud picked up by construction vehicles . w i]esia_ n��a Agare_ gate Size FDOT No . 1 Coarse Aggregate. (1 . 5 - 3 .5 inch stone)(4 - 9 cm) should be used. Wood chips may be used for single family residential construction , provided that they can be prevented from floating away in a storm . Entrance Dimensions r` The aggregate layer must be at least 6 inches (15 cm) thick, It must extend the full width of the vehicular ingress and egress area, The length of the entrance must be at least 50 feet (20 m) . The entrance must widen at its connection to the roadway In order to ` accommodate the turning radius of large trucks . (See Plate 4. 03a) r r 4-7 r