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• <br /> • Whenever possible,the entrance shall be constructed on a firm, <br /> compacted subgrade. This can substantially increase the effectiveness <br /> of the pad and reduce the need for maintenance. <br /> Maintenance • Quarry spalls(or hog fuel)shall be added if the pad is no longer in <br /> Standards accordance with the specifications. <br /> • If the entrance is not preventing sediment from being tracked onto <br /> pavement,then alternative measures to keep the streets free of <br /> sediment shall be used. This may include street sweeping,an increase <br /> in the dimensions of the entrance,or the installation of a wheel wash. <br /> Any sediment that is tracked onto pavement shall be removed by <br /> shoveling or street sweeping. The sediment collected by sweeping <br /> shall be removed or stabilized on site._The pavement shall not be <br /> cleaned by washing down the street,except when sweeping is <br /> ineffective and there is a threat to public safety. If it is necessary to <br /> wash the streets,the construction of a small sump shall be considered. <br /> The sediment would then be washed into the sump where it can be <br /> controlled. <br /> • Any quarry spalls that are loosened from the pad,which end up on the <br /> roadway shall be removed immediately. <br /> • If vehicles are entering or exiting the site at points other than the <br /> construction entrance(s),fencing(see BMPs C103 and C104)shall be <br /> installed to control traffic. <br /> ( • Upon project completion and site stabilization,all construction <br /> accesses intended as permanent access for maintenance shall be <br /> permanently stabilized. <br /> Driveway shall meet the <br /> requirements of the <br /> permitting agency <br /> It is recommended that <br /> the entrance be <br /> -.-crowned so that runoff <br /> Posy • drains off the pad <br /> Install driveway culvert `t'v,� !r♦ , <br /> lf there isaroadside ,*,Ys' • 1, <br /> ditch present �:. <br /> 4'-8'quarry spells , <br /> Geotextlle <br /> 12'min.thickness 6 4 <br /> Provide full width of <br /> ingress/egress area <br /> • <br /> Figure 4.2-Stabilized Construction Entrance <br /> February 2005 Volume II—Construction Stonnwater Pollution Prevention 4-9 <br />