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i <br /> • Fencing(see BMP C 103) shall be installed as necessary to restrict <br /> � r <br /> traffic to the construction entrance. <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 /> t: <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 alterative measures to keep the streets free of <br /> : s <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 /> I <br /> • Any sediment that is tracked onto pavement shall be removed by <br /> shoveling or street sweeping. The sediment collected by sweeping <br /> sliall 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 /> j not use a non-high efficiency mechanical sweeper because this creates <br /> f <br /> I 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 /> s " <br /> • If vehicles are entering or exiting the site at points other than the <br /> construction entrance(s), fencing (see BMP C 103) shall be installed to <br /> j control traffic. <br /> • Upon project completion and site stabilization, all construction <br /> �. accesses intended as permanent access for maintenance shall be <br /> i <br /> permanently stabilized. <br /> f <br /> f <br /> I <br /> I <br /> I <br /> i <br /> Volunne H—Construction Stormivaler Pollution Prevention -August 2012 <br /> 4-8 <br />