But the most iconic feature will be a pavilion with 9,000 s.f. cafe and seating area, topped by a lightbox with translucent acrylic panels that will illuminate the pavilion at night on the southern (M Street) boundary, matched by a smaller, similar lightbox on the northern block.
Operated by the Canal Park Development Association (CPDA), the park is technically owned by the federal government but placed under the jurisdiction of the District government, which put $13.5m into the project and in turn licences the CPDA to run and program the park, with Blake Dickson handling the retail leasing.
Far from being a strip of grass like parks of old, beneath all that seemingly simple design lies the mechanics that make it happen. Olin, the Philadelphia based landscape architect, worked with pavilion architect Studios Architecture to create and integrate mechanics for the park and cafe to drain the park's stormwater naturally, as well as that of neighboring developments which now drain into the city's stormwater system.
Brian Pilot, a principal of Studios Architecture, says the public won't be able to see the complex systems that went into making the park ecologically friendly, visually appealing, and functionally interactive. "The infrastructure of the park was incredibly complex," said Pilot, noting that 2 40,000-gallon cisterns, buried beneath the park, collect and store the rainwater, calling that feature "one of the primary objectives of the park's design," and will treat and reuse the water throughout the park. Geothermal wells will heat and cool water for the south pavilion (see diagram below), and other mechanics, "including soil stabilizing rammed aggregate piers, extensive rink, fountain and stormwater piping," will help the park function.Pilot notes that the pavilion, which his firm designed, had to feature the usual mechanical, electrical and plumbing systems, but with translucent walls and without the interior space to accommodate equipment. "There's no back of house to building, every facade has an important relationship to the street, even the roof was actually an important elevation." Considering the overall park, Pilot says the stormwater rain garden is "one of the major anchoring components of the design," running along the east side of the park, "undulating from north to south." The "south pavilion grows out of the rain garden, so one can get an elevated view of the skating rink. The middle pavilion is designed to float above the stormwater rain garden," and that the "two lanterns bookend the site, its one of your first impressions from whichever direction you enter." The park is designed to achieve LEED Gold certification. See recent pictures of the park under construction.
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general contractor has not yet been selected. VanArsdale says the CPDA issued a Request for Qualifications for the construction work, followed by a Request for Proposals, and is now waiting for those responses. Completion is expected in late 2011.
Each park block will have a distinctive design, with a shaded boardwalk that runs the length. Green features include a linear "rain garden," combination of large and small open spaces, three pavilions, an urban plaza, and prominent water features like ponds, fountains and seasonal ice rink. The rain garden will act as an on-site water collection, treating and reusing stormwater runoff. The open green space between K and I Streets could be used for movies or concerts, with seating room for 500 and standing room for 1,200 accommodated by a sunken amphitheater. A two-level pavilion (pictured above) will serve as an observation area and cafe with outdoor seating.
Canal Park replaces what was once
The National Capitol Planning Commission 

