Performance of a porous pavement system on the Maine Mall Road in South Portland.
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Performance of a porous pavement system on the Maine Mall Road in South Portland.

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    • Abstract:
      Porous pavements have been successfully used by developers since the mid-70’s as a means to make

      traditional impervious facilities, such as parking lots, handle storm water in a more environmentally

      friendly way. Traditional pavement materials used in these facilities can create storm water run off

      problems such as erosion of adjacent surfaces and poor water quality of downstream watersheds. Porous

      pavement actually allows storm water to seep into the subsurface, typically a stone reservoir and sand

      filter, and dissipate into the underlying substrate. Porous pavement systems provide an effective surface

      for vehicle traffic while also providing storm water management that improves water quality. Some

      studies have shown that these systems have a high removal rate of total suspended solids, metals, oils and

      grease, and other harmful contaminants. Other benefits are a “cooling” effect of the storm water and a

      reduction in demand on the storm sewers. The surface can consist of either an asphalt pavement or

      concrete pavement material that meets the public expectations for smoothness while allowing excellent

      drainage into the underlying collection system.

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