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• Fencing (see BMP C103) shall be installed as necessary to restrict <br />traffic to the construction entrance. 0 <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 />• Construction entrances should avoid crossing existing sidewalks and <br />back of walk drains if at all possible. If a construction entrance must <br />cross a sidewalk or back of walk drain, the full length of the sidewalk <br />and back of walk drain must be covered and protected from sediment <br />leaving the site. <br />Maintenance Quarry spalls shall be added if the pad is no longer in accordance with <br />Standards 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 replacement/cleaning of the <br />existing quarry spalls, street sweeping, an increase in the dimensions <br />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 high efficiency <br />sweeping is ineffective and there is a threat to public safety. If it is <br />necessary to wash the streets, the construction of a small sump to <br />contain the wash water shall be considered. The sediment would then <br />be washed into the sump where it can be controlled. <br />• Perform street sweeping by hand or with a high efficiency sweeper. Do <br />not use a non -high efficiency mechanical sweeper because this creates <br />dust and throws soils into storm systems or conveyance ditches. <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 BMP C103) shall be installed to <br />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 />is <br />Volume II — Construction Stormwater Pollution Prevention - August 2012 <br />4-8 <br />