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12th Avenue Green Street

  • Location: Portland, Oregon
  • Designer: Kevin Robert Perry, ASLA
  • Client: Cith of Portland Oregon
  • Last Updated: Feb 22 2007

The 12th Avenue Green Street project disconnects street stormwater runoff from a storm sewer that drains directly into the Willamette River and manages it on-site using a landscape approach. Stormwater runoff from SW 12th flows downhill along the existing curb until it reaches the first of four stormwater planters.  A 12-inch curb cut channels the street runoff into the first stormwater planter. Once inside the planter, the water is allowed to collect until it reaches a depth of six inches. The landscape system within each planter allows the water to infiltrate in the soil at a rate of four inches per hour. If a rain event is intense enough, water will exit through the planter’s second curb cut, flow back out into the street and eventually enter the next downstream stormwater planter.

The SW 12th Avenue Green Street Project has received a national award of honor from the American Society of Landscape Architects (ASLA). Bureau of Environmental Services green street specialist Kevin Robert Perry designed the innovative street stormwater project.

Added by admin on Feb 22 2007

Stata Center Outwash Basin

  • Location: Cambridge, MA
  • Designer: Olin Partnership and Nitsch Engineering
  • Client: MTI
  • Last Updated: Feb 20 2007

 The designed the landscape for this Frank Gehry building on the MIT campus.  Nitsch Engineering designed the storm water bioretention system. Wendy Goldsmith Bioengineering did the planting design.  This system is multi functional: it is a constructed wetland that detains runoff to reduce peak downstream flow, the wetland's plants and planting medium cleanses the runoff, it allows some ground water infiltration, and a solar powered pump pushes the water back up to the wetland after its first pass through the water quality polishing cycle.  This pumping not only cleanses the water a second time it also maintains the wetland moisture level required for plant health and vigor.  The Olin concept was based of creating a "slice of new England," a piece of a riverine and wetland system.  MIT was not very interested in green design when these ideas were put first forth by the landscape architects and engineers. Once the university realized that the EPA would reduce some of their pending fines for other violations, they became supporters of these ideas! (Tim Baird)

Added by admin on Jan 1 2007