national asphalt pavement association

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"Porous Asphalt"

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  • 1.Porous Asphalt Pavements with Stone Reservoirs for Stormwater Management
    • Kent Hansen, P.E. National Asphalt Pavement Association

2.

  • Reduce storm water runoff
  • Reduce pollution from stormwater runoff
  • Promote groundwater recharge
  • Reduce/eliminate retention/detention area

Porous Asphalt Pavements 3. 4. Why? Stormwater carries a host of contaminants from the land into the water Roadways, for example, release oil andgrease, tailpipe emissions, and other toxics from motor vehicles. As impervious surfaces channel large quantities of rainwater into streams at high velocity, the runoff wreaks havoc. Theflow scours stream banks, destabilizes stream contours and alters depths. 5. 6. Water Quality Ref: University of New Hampshire Stormwater Center 2007 Annual Report 7. Ref: University of New Hampshire Stormwater Center 2007 Annual Report 8. Performance

  • Many projects over 20 years old.
  • Well over 200 nationwide

9. Montgomery Co. 10. 11. Porous Asphalt

  • Not proprietary
    • Any quality asphalt producer can make
    • Placed using standard equipment
  • Designers & contractors need education
  • Not for every pavement
    • Parking lots most likely
    • Site conditions important

12. Contact Information

  • For further information contact:
    • Kent Hansen, P.E. Director of Engineering National Asphalt Pavement Association 5100 Forbes Blvd. Lanham, MD 20154 301-731-4748 [email_address]
    • Brian Dolan and Greg Moore Maryland Asphalt Pavement Association 2408-G Peppermill Dr. Glen Burnie, MD21061 (410) 761-2160 [email_address]

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