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Pervious Asphalt Roads and Parking Lots

Pervious Asphalt Roads and Parking Lots. Stormwater Design Considerations By Amie Broadsword, PE and Chris Rhinehart, PE. Why Use Pervious Asphalt?. Ecological: Mimics natural system for greater ecological function Practical:

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Pervious Asphalt Roads and Parking Lots

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  1. Pervious Asphalt Roads and Parking Lots Stormwater Design Considerations By Amie Broadsword, PE and Chris Rhinehart, PE

  2. Why Use Pervious Asphalt? • Ecological: • Mimics natural system for greater ecological function • Practical: • Hydraulic considerations (i.e. less depth to meet required storage volume) • Less time to construct • Economic: • Cost savings

  3. Project Background Snoqualmie Point Community Park Brickyard Park and Ride Lot Expansion

  4. Snoqualmie Park: Site Plan n • Detention storage provided in reservoir course under pavement with full infiltration. WQ treatment is provided by infiltration • into native soil beneath pavement.

  5. Snoqualmie Park: Drainage Section

  6. Brickyard: Site Plan Detention storage in arch-pipe system under pavement with discharge to downstream biofiltration swale for WQ Treatment n

  7. Brickyard: Drainage Section Arch pipe detention system section

  8. Brickyard: Topography and Groundwater

  9. Final Thoughts

  10. Contact information Amie Broadsword, PE amieb@paceengrs.com Chris Rhinehart, PE chrisr@paceengrs.com PACE Engineers www.paceengrs.com 206-441-1855

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