Lower Columbia River Field Guide to Water Quality Friendly Development
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Reduced Impervious Surfaces
Narrow or shared driveway
Narrow parking lot spaces
Narrow travel lanes


Permeable Surfaces
Permeable pavement
Permeable pavers
Turf block
Gravel
Cobbles

Roof Systems
Ecoroof
Roof garden

Rainwater Harvesting Systems
Rain Barrels
Cisterns

Landscape Systems
Trees
Contained planter box
Infiltration planter box
Flow-through planter box
Vegetated/grassy swale
Vegetated filter strip
Vegetated infiltration basin
Sand filter


Subsurface Systems
Soakage trench/dry wells/French drain

Conveyance
Downspout disconnection
Curb alternatives


   

Sand Filters

Site:
Cascade Station
Owner:
Port of Portland
Address:
Near Portland Airport along Airport Max Line
Portland, OR
Contact:

  

Comments:
Sand filters are unvegetated structures placed above or below ground. They are filled with at least 30 inches of sand and topped with protective rock. This series of sand filters at Cascade Station was designed to incorporate stormwater runoff from roads and sidewalks within the development. The site includes more than six sand filters or varying size and design.