Laserfiche WebLink
Chapter 4 - Best Management Practices for Erosion and Sediment Control <br /> 4 . 02 POLLUTION SOURCE CONTROLS ON CONSTRUCTION SITES <br /> ( SW BMP 2 . 04) <br /> Definition <br /> Minimizing nonpoint source pollution from construction sites through good management and <br /> " housekeeping" techniques . <br /> Purpose <br /> To reduce the availability of construction-related pollutants which can contaminate runoff water <br /> and , where runoff contamination cannot be avoided , to retain pollutants and polluted water on <br /> the site . <br /> Conditions Where Practice Applies <br /> r <br /> This practice applies to all construction projects . The level of planning and management <br /> necessary to control nonpoint source pollution adequately is dependent upon the size and <br /> complexity of the construction site . <br /> Planning Considerations <br /> Construction activities , by their nature, create many sources of potential pollutants which can <br /> contaminate runoff and thereby affectthe qualityof downstream receiving waters . Accelerated <br /> erosion and sedimentation caused by land-disturbing activities are the major pollution <br /> problems caused by construction . <br /> There are , however, many other potential pollutants associated with construction activities <br /> such as gasoline , oils , grease , _ paints, cements , and solvents , to name only a few . Even <br /> relatively non-toxic materials such as paper and cardboard can be classified as potential <br /> pollutants when they are washed into streams and lakes . <br /> The best way to prevent nonpoint source pollution on construction sites is to use "good <br /> housekeeping " practices , which usually entails simply maintaining the site in a neat and <br /> orderly condition . Specific practices should be employed to retain runoff and to deal with toxic <br /> substances and materials . An overall plan for the control of nonpoint source pollution is .� <br /> advisable so that control measures can be specified and implemented effectively. <br /> Following are some elements which should be considered in nonpoint source pollution <br /> control planning on a construction site : <br /> 1 ) Erosion and Sediment Controls ■ <br /> Practices which minimize erosion and retain sediment on site are effective in controlling many <br /> other nonpoint source pollutants associated with construction activities as well . Development <br /> and implementation of a good erosion and sediment control plan is a key factor in controlling <br /> nonpoint source pollutants other than sediment on a construction site . <br /> 4-3 <br />