Archive for the ‘Green Roofs’ Category

30 Years of Emerging Voices / Princeton Architectural Press

30 Years of Emerging Voices / Princeton Architectural Press

The Emerging Voices Award was created in 1982 by the Architectural League of New York to showcase the work of early- to mid-career American architects, landscape architects, and urban designers. Each year, through an invited competition, a jury selects practitioners or firms with a “significant body of realized work that represents the best of its kind and has the potential to impact the future of architecture and landscape design.” 30 Years of Emerging Voices: Idea, Form, Resonance, a new book by the Architectural League of New York, documents and assesses the first three decades of the League’s Emerging Voices program, highlighting firms that have been recognized for their innovation, insight, and influence.

Organized chronologically by year of submission and interspersed with essays by leading design critics, this book is a true reference, valuable as a comprehensive snapshot of the past three decades of design. The Emerging Voices award is unique in that it recognizes professionals who are no longer students, but are not yet “fully mature practioners.” As Ashley Shafer, an associate professor of architecture at the Ohio State University, states in the book’s first essay, this career phase often gives way to work that is “idealistic, experimental, and formally clumsy on occasion.” While some of the work in the book may have been “dismissed as hypothetical, utopian, or even naïve,” it’s work we now look at with appreciation.

Take for example Steve Holl’s Bridge of Houses proposal for the then-abandoned High Line in Chelsea, Manhatttan, which was recognized among several of Holl’s other projects with the 1982 Emerging Voices Award. The firm’s proposal for the disused High Line was to construct many different houses over the rail. Each villa is, in itself, a slightly different looking bridge that provides pedestrian passage. While the ambitious project was merely conceptual, it served as a precedent for James Corner Field Operations’ High Line park, which was recognized with the award in 2001 and is also featured in the book. While seemingly unrelated projects, “a host of newly created buildings” engage the High Line as was intended by Holl almost two decades earlier.

Bridge of Houses, New York, NY, proposal, 1979 / Steve Holl Architects via Princeton Architectural Press

Bridge of Houses, New York, NY, proposal, 1979 / Steve Holl Architects via Princeton Architectural Press

The same phenomena is true of Reiser + Umemoto’s 1995 design for Yokohama’s International Port Terminal, which was recognized by the Architectural League of New York in 1996. The complex network structure for the building seemed fantastical and impossible to construct at the time of its conception. However, Jesse Reiser and Nanako Umemoto’s Taipei Pop Music Center, which is arguably just as structurally complex as their design for the International Port Terminal, is currently under construction. While many of their ideas were considered outside the realm of possibility in the mid-late 90’s, Reiser + Umemoto’s designs became not only feasible, but well-received, at the turn of the 21st century.

Taipei Pop Music Center Competition images / Reiser + Umemoto via E-architect

Taipei Pop Music Center Competition images / Reiser + Umemoto via E-architect

While the majority of the book is devoted to architects, several landscape architects are also featured, including Susannah Drake, FASLA, Dlandstudio; Chris Reed, FASLA, Stoss Landscape Urbanism; Elana Brescia, ASLA, and Kate Orff, ASLA, SCAPE; Gary Hilderbrand, FASLA, and Douglas Reed, FASLA, Reed Hilderbrand; Ken Smith, FASLA, Workshop: Ken Smith Landscape Architect; and Julie Bargmann, ASLA, D.I.R.T. Studio.

Bargmann was one of the first, if not the first, landscape architect to be recognized with the award when she won in 2000. While she has since gone on to design many recognizable projects, such as MASS MoCa in North Adams, Massachusetts, and the Urban Outfitters Headquarters in Philadelphia, Pennsylvania, in 2000, she was best known for her work at the Ford River Rouge Plant in Dearborn, Michigan. This regenerative project transformed an industrial icon into a model of twenty-first century sustainability through the use of ambitious ecological systems, creating “a new model of environmentally integrated manufacturing.” Bargmann is a true example of the kind of practitioner the award seeks to recognize — someone who has been a novel thinker from the beginning of her career and has made this innovation a career-long pursuit.

Ford River Rouge / D.I.R.T Studio

Ford River Rouge / D.I.R.T Studio

The most recent landscape architect featured in the book is Susannah Drake, Dlandstudio, who was recognized with the award in 2013. Applauded for her unique voice in projects like BQ Green and Gowanus Canal Sponge Park, both in Brooklyn, New York, Drake has quickly proven that interdisciplinary design is the way of the future. Each of Dlandstudio’s projects emphasizes the integration of ecology, infrastructure, and design at the urban network scale — using the United States’ largest city as a primary testing ground for new ideas in a way few firms have dared to try.

BQ Green: Reviving South Williamsburg / Dlandstudio

BQ Green: Reviving South Williamsburg / Dlandstudio

Focused on firms and individuals who have tested limits and pressed the design profession forward, rather than those who are solely focused on making names for themselves, 30 Years of Emerging Voices is a unique book in its genre, prioritizing innovation over recognition and setting the stage for design breakthroughs to come.

Read the book.

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U.S. Coast Guard Headquarters / Taylor Lednum/GSA

The General Services Administration (GSA) granted us a rare look at a Level 5 security campus, the new U.S. Coast Guard Headquarters, at the restored St. Elizabeth’s Hospital in southeast Washington, D.C. This $646-million project is just the first in a series that will transform a mid-19th-century mental asylum, founded by social reformer Dorothea Dix, into the new headquarters for the Department of Homeland Security, of which the Coast Guard is a major piece. In a tour, Christian Gabriel, ASLA, national design director for landscape architecture at GSA, said “the goal of the new facility is improve operational efficiency by bringing together all the Homeland Security leadership in one place.” Leaders of the department will occupy revamped asylum buildings that once housed patients like Modernist poet Ezra Pound.

The tour started with moving through multiple high-security checkpoints stacked with fully-armed guards. Once cleared, we looped up towards the upper terraces of the new 1.2-million-square-feet Coast Guard headquarters, designed by architects at Perkins + Will and landscape architects with Andropogon Associates, with HOK providing landscape architecture, interiors, and sustainability services as part of a design-build team. As Gabriel explained, new Environmental Protection Agency (EPA) rules meant that 95 percent of stormwater had to be captured on site. On top of that, historic preservation, sight, and security considerations meant that the new Coast Guard headquarters needed to be lower than the historic asylum buildings.

What that meant in reality — for such a large site on such a steep slope — was GSA needed to set the 9-story building deep in the hill and cover it in a set of stair-step green roof terraces that funnel water down to a constructed wetland and pond. GSA ended up creating the second largest green roof in the U.S. at 550,000 square feet, and the third largest in the world. It’s so big that a deer actually grazed on the roof, not realizing it was on one.


U.S. Coast Guard Headquarters / Taylor Lednum/GSA

Thomas Amoroso, ASLA, the landscape architect who designed the project at Andropogon, explained that while the system may look complex, it’s actually pretty simple. “It’s low-tech and common sense. The green roof terraces are a gravity-based system that move water from the higher terraces to a lower ones and then into the pond.” That the system operates in such a seamless way — and also doubles as public space for the coast guard officers operating the facility — is a testament to the depth of the design.


Rendering of step terraces / Perkins + Will

As we make our way down through many floors to get to the 350,000-cubic-foot pond, we begin to see subtle differences in the plant life in the courtyards spread among the green roofs. Amoroso, and HOK landscape architect Brandon Hartz, ASLA, explained how they “replicated existing native eco-zones throughout the courtyards.” During the 120-foot-drop through the levels, water moves off the buildings, onto roofs and courtyards, through diverse regions, from the “Blue Ridge and rocky barrens of Piedmont to the coastal plains.”


View of an upper courtyard / Taylor Lednum/GSA

All the courtyards that get ample light feature a mix of shrubs, grasses, and Oak community trees, a majority of which are native. “They are habitat for wildlife.” Indeed, Hartz told us how there are actually gravel pockets in the roof designed to enable nesting by Killdeer, a small bird. And a rare bald eagle and its family now live on the facility, too.


Upper courtyard with Oak community trees / Taylor Lednum/GSA


Courtyard with infrastructure for 100-year storm event / Taylor Lednum/GSA

Once the water leaves these upper courtyards, it makes it way to the lowest courtyard — the vernal pool, where the wetlands cleanse it.


Vernal pool in the coastal plain / Taylor Lednum/GSA

Then, stormwater is conveyed to the huge constructed pond, where it’s aerated, recycled, and used to water the green roofs and courtyards once again.


Constructed pond / Taylor Lednum/GSA

While we saw few people outside when we visited, Amoroso said many thousand Coast Guard officers are already hard at work there, with a few thousand more scheduled to move in. We saw a few officers pulling together cafe chairs and table together for an outdoor lunch. Hopefully, the Coast Guard will put some effort into organizing outdoor events, so they can better take advantage of their landscape.

While some may balk at the $646 million price tag, imagine the cost if the GSA had used grey instead of green infrastructure to deal with all that stormwater. For this alone, the design approach seems like a wise use of taxpayer money. And it’s good news that the biggest government construction project since the Pentagon is covered in green roofs; it would be upsetting if it wasn’t. It’s just too bad that the security is so high that more people can’t get in there to see it for themselves.

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The Sustainable Sites Initiative™ (SITES™) has announced eight new projects that have achieved certification under the nation’s most comprehensive rating system for the sustainable design, construction, and maintenance of built landscapes. These projects, as part of a group of 150 projects participating in an extensive, two-year pilot program, have applied the 2009 SITES guidelines and met the requirements for pilot certification.

The newly certified projects are Blue Hole Regional Park in Wimberley, Texas; Harris County WCID 132’s Water Conservation Center in Spring, Texas; American University School for International Service in Washington, D.C.; Bat Cave Draw and Visitor’s Center at Carlsbad Caverns National Park, N.M.; Mesa Verde Visitor and Research Center at Mesa Verde National Park, Colo.; George “Doc” Cavalliere Park in Scottsdale, Az.; the National Renewable Energy Laboratory Research Support Facility in Golden, Colo. and Scenic Hudson’s Long Dock Park in Beacon, N.Y.

SITES is a partnership of the American Society of Landscape Architects (ASLA), the Lady Bird Johnson Wildflower Center of The University of Texas at Austin and the United States Botanic Garden. SITES was created to fill a critical need for guidelines and recognition of sustainable landscapes based on their planning, design, construction and maintenance. The voluntary, national rating system and set of performance benchmarks applies to sites with or without buildings.

“The effort and time these projects have spent to field test SITES 2009 guidelines and ensure their site is sustainable is commendable and has been a tremendous resource for informing the development of the SITES v2 Rating System, which will be released later this fall,” said SITES Director Danielle Pieranunzi.

Since June 2010, pilot projects have been testing the 2009 rating system created by dozens of the country’s leading sustainability experts, scientists and design professionals. The diverse projects represent various types, sizes, and locations as well as budgets. There are now a total of 23 certified pilot projects with more projects continuing to pursue pilot certification until the end of 2014.

A new rating system, SITES v2, will be published this fall, using information gained through the pilot project certification process. The projects certified up to that point will have qualified under the 2009 rating system. It includes 15 prerequisites and 51 additional, flexible credits that add up to 250 points. The credits address areas such as soil restoration, use of recycled materials and land maintenance approaches. Projects can achieve one through four stars by amassing 40, 50, 60 or 80 percent of the 250 points.

The eight newly certified projects each incorporate sustainable features and practices and have received ratings listed below:

Blue Hole Regional Park, One Star, Wimberley, Texas (see image above). A beloved local swimming hole degraded by overuse was transformed into an environmentally sustainable regional park in the Texas Hill Country. The park seeks to strike a balance between preservation of the site and recreational and educational opportunities for users. Sustainable landscape strategies include managing storm- water through the use of rain gardens and cisterns, irrigating recreational fields with treated effluent, minimizing impervious surfaces, protecting trees and endangered species habitat and restoring shoreline. New vegetation is primarily native plantings, and the park features on-site composting.

Harris County Water Conservation and Improvement District (WCID) 132’s Water Conservation and Demonstration Center, One Star, Houston, Texas. As Texas struggles with water shortages, WCID 132 created a community outreach project dedicated to showing alternative methods for reducing stormwater runoff and demand for potable water. This project transformed an under-used public campus into a series of gardens that educate residents on sustainable water use and landscape strategies. Features illustrate efficient water conservation, stormwater management, and soil-centered practices. Paths and planting areas were built with locally salvaged and reused materials.

American University School for International Service, Two Stars, Washington, D.C. This entrance plaza is a gathering place for students and faculty that is integrated with a LEED® Gold building to manage 100 percent of stormwater on the site and, as a result, needs no irrigation. The site features a Korean garden with adapted plants, an edible herb garden, an apiary and regional materials. The university has a zero-waste policy that includes recycling and composting landscape clippings and debris and coffee grounds from the student- run coffee shop inside.

Bat Cave Draw and Visitor’s Center, Two Stars, Carlsbad Caverns National Park, N.M. After finding contaminants from parking lot runoff, including motor oil and antifreeze, in cavern pools, Carlsbad Caverns National Park removed the existing parking area and rehabilitated it to a natural state using vegetation native to the park. All native plants used for the project were grown nearby from locally-genetic stock, and additional work was done to collect and treat runoff from the new parking areas. The park near Carlsbad, N.M., was one of several parks that participated in a National Park Service pilot program to develop monitoring standards for re-vegetation.

Mesa Verde Visitor and Research Center
, Two Stars, Mesa Verde National Park, Co. The site-sensitive landscape design surrounding the center reflects the national park’s mission to educate the public about the archeological, biological and physical resources of the park and their interconnectivity. Stormwater from the site is directed through vegetated swales and retention ponds, and the area was re-vegetated with a mix of native and drought tolerant species, meanwhile addressing concerns about wildfires. The site produces 95 percent of its energy from on-site renewable energy sources and uses locally-quarried stone. The building has earned a LEED® Platinum certification.

George “Doc” Cavalliere Park
, Three Stars, Scottsdale, Ariz. A primary strategy for the park, located on 34 acres of rugged desert terrain, was preserving and restoring its natural resources. The design uses 100 percent native plants, and all existing native trees, cacti and plant communities were preserved in place or salvaged and re-used onsite to restore desert upland and riparian plant communities. The park also incorporates a regional on-site stormwater management system. Other strategies include rainwater collection, permeable paving in parking areas and driveways, high efficiency LED lighting, net-zero energy consumption using a grid-tied 24 kilowatt solar photovoltaic system, and exclusive use of high-content recycled steel without industrial finishes.


National Renewable Energy Laboratory (NREL) Research Support Facility, Three Stars, Golden, Co. This federal research laboratory, a former National Guard training facility, consists of a 327-acre government research campus. The Research Support Facility, one of the newest campus additions, has achieved LEED Platinum certification for its innovative building design. The landscape framework for this net-zero energy facility includes establishing natural drainage for stormwater, minimizing impacts on local habitats, protecting habitat through conservation easements, providing hiking trails for staff and community members, using porous paving surfaces, restoring existing prairie and arroyo site features, using on-site  materials for the construction of retaining walls and installing energy efficient lighting. Regional materials and high recycled content were emphasized in the selection of site materials and furnishings.

Scenic Hudson Long Dock Park
, Three Stars, Beacon, N.Y. This project transformed a 14-acre property on the Hudson River from a degraded, post-industrial brownfield into a major waterfront park that realizes themes of recovery, remediation, reuse and re-engagement. The project returned public access to the river, remediated contaminated soils, rehabilitated degraded wetlands, re-used found materials in innovative ways and restored ecological diversity to upland, wetland and intertidal zones. Features include decks and docks popular with anglers; ADA-accessible paths; areas for picnicking, river gazing, dog-walking, and Frisbee tossing; a kayak pavilion and an outdoor classroom.

Image credits: (1) Blue Hole Regional Park / Tim Campbell, Design Workshop, (2) Harris County Water Conservation and Improvement District (WCID) 132’s Water Conservation and Demonstration Center / Ken Fraser, (3) American University School of International Service / Paul Davis, (4) Bat Cave Draw and Visitor’s Center / NPS, (5) Mesa Verde Visitor and Research Center / NPS, (6) George “Doc” Cavalliere Park / Chris Brown, Floor Associates, (7) National Renewable Energy Laboratory (NREL) Research Support Facility / Robb Williamson, courtesy of RNL, (8) Scenic Hudson Long Dock Park / Reed Hilderbrand LLC


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At the Old Capitol Pump House, a restored building along the Anacostia River, Washington, D.C. Mayor Vincent Gray announced the launch of the long-awaited Sustainable D.C. plan. The result of an amazing public outreach process that involved over 400 local green experts, more than 180 public meetings in front of 5,000 people, and 15 D.C. government departments and agencies, the plan is an attempt to make “D.C. the greenest, healthiest, and most livable city in the U.S.” by 2032.

Gray said D.C. is already a model for other cities. “We are what many cities hope to become.” For example, the district apparently already leads the nation in the number of green, healthy buildings, or LEED buildings, per capita. New schools must now reach the LEED Gold standard. But even more green buildings now seems to be the goal: the district has signed on to the National Better Buildings challenge, aiming for 20 percent energy efficiency improvements across all buildings by 2020. And they may be moving faster, getting 20 million square feet greener in 20 months. With the Sustainable DC Act of 2012 now signed into law, a new Property Assessment Clean Energy (PACE) program is underway, aimed at improving financing opportunities for greening commercial and multi-family housing.

The district wants to be greener looking, too (literally). There’s an accelerated tree planting campaign, with 6,400 slated to be planted this season alone. The goal is a 40 percent tree canopy, which would put D.C. in the top tier of major cities worldwide. Beyond trees, the city is implementing “high standard stormwater infrastructure investments.” For example, “we are now building more green roofs than anyone,” with 1.5 million square feet now in place. Green streets, like the first green alley built in Ward 7, are also being rolled out, with more potentially coming soon in Chinatown. Green infrastructure technologies may get a local boost, too, with the $4.5 million that has been dedicated to “innovative pilot projects.”

The district already has the biggest bike share network in the U.S., but “this may not be the case for long, as other cities are catching up.” The D.C. government now purchases 100 percent renewable energy. We have become a “number-one U.S. E.P.A. green power community.” All of this action has led to a 12 percent reduction in green house gas emissions over the past year.

Gray seemed to stress, however, that going green can’t just be the agenda of educated, liberal, white environmentalists. The diverse, multi-ethnic crowd seemed to underpin this point. “We need to focus on jobs, health, equity and diversity, and the climate.” So part of making D.C. more sustainable will involve “expanding access to affordable housing and economic development opportunities” for all, so that “we have one city.” Gray said: “We can’t push people out.”

The actual plan offers some 32 goals, 31 targets, and more than 140 proposed actions. Some goals are quite bold, like “a fishable, swimmable Anacostia River in a generation.” The Anacostia is currently one of the filthiest rivers in the U.S. Other goals: implement a zero-waste plan, with a 80 percent landfill diversion rate. Expand urban agriculture, with 20 more acres of land growing food, so that 75 percent of residents are within 1/4 mile of healthy, local produce. The city wants 1,000 new local renewable energy projects, with a dedicated wind farm for D.C. government operations.

Gray said “this is about nothing short than winning the future.” For a mayor still under federal investigation, Sustainable DC offers a positive way forward and certainly paints the city in a progressive light. As the mayor said, “who would have thought 10 years ago that we would have the biggest bike share network, 100 percent renewable energy for the district government, and 400 local people involved in crafting a new vision.”

But, as they say, the proof of the pudding is in the eating. Pointed questions from the media at the launch event asked whether the mayor and city council will actually put the funds and government personnel behind this bold plan to “change our society.” In a telling comment, Gray said the District will need to wait to hear the results of the debate in Congress on “sequestration,” which could potentially result in billions being cut from the federal budget. Much of the district economy depends on federal government spending, which is why the mayor said the city must “diversify” into new sectors in his recent state of the district speech. In fact, much of the resurgence of the district in the past few years can be attributed to the new federal money pumped into the district (see a great New York Times article on this).

Perhaps Gray’s broader case is that Sustainable DC will help the district’s economy and people become more resilient to economic, environmental, and social shocks, and diversify into greener industries. This seems like smart local leadership that goes beyond the vagaries of federal spending. Grey also made a point of saying regardless of who is mayor in the future, the plan “reflects the interests of our community.” The plan goes beyond the mayor.

Still, it will be up to the D.C. government, private sector, and non-profit organizations to implement the plan at a very high standard. The race is on, considering many other top-tier cities have similar goals.

Read the Sustainable DC plan and also check out Becoming Greenest: Recommendations for a Sustainable D.C., ASLA’s 30-page report produced last year, which seems to have at least inspired a few of the District’s targets and actions.

Image credit: Diamond Teague Park, Washington D.C. Landscape Architecture Bureau /Allen Russ

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Lakiya Culley, an administrative assistant at the U.S. State Department and mother of three, just moved into one of the most innovative, energy-efficient houses in the U.S. In Deanwood, a working class, primarily African-American neighborhood of Washington, D.C. that has recently struggled with foreclosures, Culley is now the proud owner of Empowerhouse, a home designed using “passive house” technologies by students at the New School and Stevens Institute of Technology. The home wasn’t just built from scratch though: it came out of the Solar Decathlon design competition, which was held on the National Mall in 2011. Developed in partnership with Habitat for Humanity and the D.C. Department of Housing and Community Development, the house marks “the first time in the Solar Decathlon’s history” that a team partnered with civic and government organizations to make a house a reality in the District.

After some criticism that Solar Decathlon homes were getting out-of-control-pricey to build and therefore weren’t realistic real-world models, the organizers added a “affordability” category in which teams could earn points. Empowerhouse scored really high in that category in comparison with a home from Germany, which cost upwards of $2 million. In fact, according to a spokesperson at New School, each unit of the actual Empowerhouse in Deanwood (there are two apartments in the mini-complex) cost just $250,000, making it affordable in that neighborhood. The model has been such a hit that six more are being planned for Ivy City, another inner-city neighborhood in the District.

This “net-zero” home itself is a marvel. The home produces all its own energy needs and consumes 90 percent less energy for heating and cooling than the conventional home. The bright, bold exterior lights up the whole block.

But the fine exterior and healthy, light-filled interior built out of sustainable, recycled materials shouldn’t distract from the great landscape architecture components, which were integrated into the project from the beginning, said Professor Laura Briggs, faculty lead of the project, at the New School. As Briggs explained, the home is designed to capture all rainwater that hits it and surrounding homes.

Each unit has terraces with green roofs and small plots for urban agriculture that are designed to capture some water.

In the rear of the building is a rain garden that captures any rainwater that escapes from the roof gardens. On top of that, each unit has its own underground cistern, where rainwater is collected and then used to water the property.

The integrated system also synchs up with the front and sides of the home. There’s the District’s first residential green street, a deep trough filled with dirt and plants designed to soak up street runoff and deal with the oily pollutants that the runoff collects on streets.

At the sides of the house, the parking space is actually made up permeable pavers that allow stormwater to sink into the underlying soils.

In terms of social sustainability, the piece so often left out of the puzzle, both the homes and landscape were co-designed with the community. Students met with community members, local organizations, and Culley, the owner, in a series of design charrettes. The result of all that outreach and collaboration will be more projects in the neighborhood, including a new community “learning garden.”

The project then is not only a powerful model for how to bring sustainable, affordable, community-based housing to the District, but also how to create real stormwater management solutions that address the truly local environmental problems: the heavy runoff that impacts the already polluted rivers.

Another benefit of the project worth noting: Habitat for Humanity now knows how to build out these passive house homes in a low-cost way.

While the house was built by volunteers from Habitat for Humanity, all of the landscape work was done with a few amazing local organizations: Groundwork Anacostia and D.C. Greenworks.

Image credits:(1) Lakiya Cullen and sons / Martin Seck, (2) Empowerhouse / Martin Seck, (3) Roof terrace / Sarah Garrity, (4) Rain Garden / Ashley Hartzell, (5) Green Street / Ashley Hartzell, (6) Permeable Pavers / Ashley Hartzell

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Washington, D.C.’s Navy Yard has undergone an unbelievable transformation in the past few years. What was once an isolated naval base and seedy area made up of industrial buildings and strip clubs has become home to a real neighborhood — a mixed-use mecca composed of a new headquarters for the U.S. Department of Transportation and a residential and commercial complex, which is also a LEED-Neighborhood Development (ND) Gold project. The new complex, which is called the Yards, features a great new riverfront park by M. Paul Friedberg and innovative green streets by AECOM. These amenities are near a super-sustainable boat pier by local D.C. landscape architecture firm Landscape Architecture Bureau (LAB). Now, the neighborhood, which has seen an influx of upwardly-mobile urbanites, has the new “Canal Park,” a model neighborhood park by landscape architecture firm OLIN and architecture firm STUDIOS that has transformed a three-block brownfield into a simple yet enchanting space.

In recent years, the space was a drain on the neighborhood, a parking lot for buses. But way back when — before it was paved over in the 1870s — the place was part of the historic Washington City Canal, which connected the Anacostia and Potomac Rivers. According to OLIN, the new $20 million park is meant to evoke that historic waterway, with a “linear rain garden reminiscent of the canal, and three pavilions, which recall floating barges that were once common.”

Achieving the clear simplicity of the park clearly took a lot of effort. Lining the long, narrow park are lots of space for lounging on nice lawns, metal kinetic-feeling sculptures by David Hess, curved benches, and, in winter, an ice-skating rink.

The rink area is flanked by a cafe covered in publicly accessible green roof. The green roof features what must be a first: signs letting people know to curb their dogs around the sedum.

Underlying the space are some complex green infrastructure systems that help this place give back to the neighborhood on the environmental front. “Contaminated soils were replaced with a healthy growing medium and the native plant habitat was re-introduced.” A linear rain garden, which runs the length of the park, has signs saying “Water is reclaimed and recycled,” helping to explain its role to the visiting public. The rain gardens work together with deep tree pits and underground cisterns to collect, manage, and treat “almost all stormwater runoff on site” and from the neighboring blocks, some 1.5 million gallons of water each year. Treated, recycled water collected in the park is used to “satisfy up to 95 percent of the park’s water needs for fountains, irrigation, toilets and the ice skating path.”

Also, this truly-green park has 28 geothermal wells underground to provide a “highly-efficient energy supply for park utilities,” reducing park energy use by 37 percent. And the park is there to provide sustainable transport solutions for the broader neighborhood, too: it features the first electric vehicle charging stations this blogger has ever seen in person. Two stations with spaces for four cars (we think) can be accessed with a swipe of a credit card.

The wood structures in the park, which were designed by STUDIOS, feature “reclaimed and sustainably harvested wood from black locust trees.” Black Locust is a great alternative to unsustainable rainforest hardwoods like Ipe. The use of this wood in these pavilions is an excellent development really worth applauding.

Additional clear-plastic pavilions scattered at the edges of the park are opaque and both there and not there. They are apparently interactive “light cubes” that can display art and photography.

OLIN says programming will be ramped up to really maximize use of the new park. “The Canal Park Development Association, in partnership with the Capital Riverfront Business Improvement District, will host numerous events throughout the year, such as movies and concerts, holiday and seasonal festivals, farmers markets, art expositions, educational and environmental programming, storytelling events, and more.” The neighborhood clearly benefits.

Image credits: (1-3) OLIN, (4-5) Phil Stamper / ASLA, (6-7) OLIN

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In a session on measuring regenerative design at the ASLA 2012 Annual Meeting, Danielle Pieranunzi, Affil. ASLA, LEED AP, Lady Bird Johnson Wildflower Center at the University of Texas at Austin; Joel Perkovich, ASLA, Phipps Conservatory & Botanical Gardens; Jose Almiñana, RLA, FASLA, Andropogon Associates; and Michael Takacs, ASLA, Civil & Environmental Consultants, Inc., discussed recent developments in the Sustainable Sites Initiative (SITES) pilot program.

Pieranunzi began the session by describing the development of sustainable landscape metrics for the SITES rating system. Aiming to improve ecosystem services while bolstering natural systems that we typically view as free, the SITES program is envisioned as a stand-alone rating system, operating on a 250-point scale with 4 levels of certification. This certification system could be applied to projects ranging form small-scale residential sites to parks and streetscapes.

The 2-year pilot program, which ended last June, tested the program metrics on locations spread across the U.S. Of course, developing a landscape sustainability metric is not easy, and the SITES program must define measures for hydrology, soils, vegetation, and materials. The pilot program allowed for critical testing of these measures, which can now be adjusted and refined.

Perkovich discussed one pilot project: the Phipps Center for Sustainable Landscapes (CSL) in Pittsburgh. The CSL grounds are located on the 15-acre Phipps Conservatory and Botanical Garden campus. Opened in 1893, the initial plant collection for the conservatory came from the Columbian Exposition in Chicago. The Phipps Conservatory touts itself as the world’s “greenest” public gardens and it was the first to become LEED certified.

The new CSL headquarters is on a 2.65-acre site, the former location of a City of Pittsburgh Department of Public Works salt storage facility. The new design includes a 24,350 square foot building and is designed to be net-zero energy and water. In fact, the building is expected to be 80 percent more energy efficient than a conventional building.

Almiñana explained CSL’s design. The integrated design process included nine months of design charrettes with the local community and local designers. This process established a need for the site to be both an extension of the Phipps campus and to fit into the larger landscape. Almiñana discussed how the design offers natural air circulation by connecting the building design into the site, zero-waste energy through the deployment of interventions to generate energy and moderate temperature, and net-zero water by exploring the potential of every site surface.

Takacs talked about the hydrological design of the CSL site. To achieve a 100 percent, net-zero water level, 100 percent of water on the site must be captured or reused. Therefore, the design used pervious paving, bioretention areas, an open water lagoon, underground storage, a green roof, and rain gardens to dramatically reduce runoff. This system even captures runoff from the upper campus Botanical Gardens, which requires a tremendous amount of water to function.

For sanitary water treatment, the CSL design uses an array of tools including a septic tank, constructed wetlands, sand filters, and a solar distillation system. By employing these treatment elements, the CSL site generally doesn’t release anything back into the public sewage system.

As more landscapes like the Phipps Center for Sustainable Landscapes are designed, built, and monitored, the more refined and sophisticated the SITES rating system will become. Each SITES project provides vital knowledge and creates incentives for the construction of future regenerative sites. The session ended with this thought: “What if every single act of design and construction made the world a better place?”

This guest post is by Ben Wellington, Student ASLA, Master’s of Landscape Architecture Candidate, Louisiana State University and ASLA 2012 summer associate.

Image credits: (1, 3, 4, 6) Landscape Voice, (2, 5) Andropogon Associates

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Presenting as part of the TEDxWDC, a day-long discussion between Washington D.C.’s creative leaders, landscape architect Jeff Lee, FASLA, talks about the need to recognize the continuity between man and nature, striving to raise awareness of “planning and design strategies for creating new cities and rejuvenating existing mega-cities.”

Lee expresses the need for more environmentally-conscious urbanism. The world is urbanizing at a rapid pace, with “a majority of the projected 12 billion people to live in cities by 2050.” Stunningly, by this time “China alone will build 300 new cities the size of Chicago.” Given the ecologically devastating effects of urbanization to date, “we must find a better way” to build and live.

On a local level, the environmental consequences of reckless urbanization are undeniable. In the 64,000 square miles of the Chesapeake Bay watershed, urbanization has created vast impervious surfaces that prevent rainwater from recharging aquifers. Additionally, runoff from impervious surfaces creates an anaerobic dead zone in the Bay. In Washington D.C., stormwater systems are overwhelmed by the volume of runoff about 40 times a year, sending raw sewage into the Anacostia River.

According to Lee, to address these problems we must look to nature. Instead of collecting water into drain pipes, we can store and filter it using ecological systems. For instance, the first low-impact development in Washington D.C. was the Barracks Row streetscape, which utilizes tree pits as sponges to collect and slowly release water to reduce strain on the city stormwater system.

On a larger scale, the DC CityCenter project, a six-building mixed-use development, will use a terraced network of green roofs and streetscaping where all the water is “collected, treated, and reused.” Lee states, “We upped the ante on this one, where not only are we treating the sidewalk water, but we’re also treating the street water, too.”

At the broader urban scale, Lee described his work in Suzhou, China. Tasked with designing an entirely new city, Lee and Associates envisioned a 4,000 acre settlement that integrates urban infrastructure with the existing ecosystem. In order to not disrupt the rice harvests, which are highly dependent on the careful control of water, the infrastructure is placed at the lowest point of the site. This location also enables the city to use its municipal solid waste to achieve a dramatic increase in energy efficiency. Lee describes how “there are new technologies for treating that biomass – drying and burning it – to create fuel.”

Throughout all of his examples, Lee stresses the importance of recognizing man as part of nature and the ways good design takes inspiration from nature. He continually refers back to the golden ratio – a set of proportions that appears throughout nature and human design – as evidence of our continuity with the natural world. Not only can integrating our designs with natural systems mitigate or even reverse the destructive impacts of urbanization, it can also provide a more enriching and beautiful experience for people. Lee describes how “nature shows us the way to build and the way to live. With our awareness that we are part of nature and not over it, and with our ability to communicate and connect as never before, we can leave our grandchildren’s children something of awe and inspiration.”

This guest post is by Benjamin Wellington, Student ASLA, master’s of landscape architecture candidate, Louisiana State University, and ASLA 2012 summer intern.

Image credits: (1) Urban Places and Spaces, (2) Gustafson Guthrie Nichol + Sir Norman Forster, Lee and Associates, (3) Lee and Associates

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After two years of internal debate among 17 different federal agencies and the D.C. government, the National Capital Planning Commission (NCPC) released its long-awaited plans for a new Southwest Eco-District designed to undo the worst damage of the massive “urban renewal” projects inflicted on L’Enfant neighborhood over the past decades. Designed to transform the spooky, almost pedestrian-free area just south of the Mall into a highly sustainable, people-friendly cultural and business destination, the Eco-district plan means to take on many challenges at once. As Elizabeth Miller, ASLA, the intrepid landscape architect who is guiding the project, explained, this 110-acre, 15-square block project is meant to showcase “high performance buildings and landscapes” while creating space for 19,000 new federal workers and solving some of the worst pedestrian access problems.

At the beginning of the hearing today, NCPC Chairman L. Preston Bryant, Jr said the project can go a long way to “breathing new life into the city.” While the whole Eco-District may take 20 or 30 years to design and implement, “we have a once in a generation opportunity to make this happen.” He added that NCPC and its many federal partners are eager to move forward because there are some synergies that make the timing right: The Department of Energy (DOE) building is “coming to a lifecycle decision,” meaning that it’s ready to be torn down because it’s now highly inefficient in terms of energy and water use; the Southwest waterfront plans are moving forward, with $2 billion in private sector investment set; and the D.C. government-led Maryland Avenue redevelopment project is on its way.

Miller outlined a vision for an Eco-District that provokes the imagination, at least among sustainable designers. She said the new District will “capture, manage, and reuse water, energy, and waste” and work beyond a single building, leveraging clusters of buildings to create a new system. At the same time, the plan will take aim at the incredible lack of public access — the barriers, the highways, and grade changes — that keep people away, except for the federal workers that have to go there for work.

Diane Sullivan, sustainability planner for NCPC, said a sustainable mixed-use community will arise out of a set of new “guidelines, objectives” that will frame neighborhood development efforts and the creation of new environmental systems.

On developing the neighborhood, Sullivan said that a user survey of D.C. residents found that the lack of amenities was the overwhelming reason why people didn’t want to move down there or even hang out there. So the goal is create a new tree-lined 10th street (or L’Enfant Place) that can connect the Mall to the new Southwest waterfront development while also making that connection itself an exciting cultural destination, lined with 1.2 million square feet in new space for up to 5 new museums, along with farmers’ markets and other draws.

Better pedestrian access is also key to making all this work. In the new plans, Miller said Virginia and Maryland Avenues will re-appear, carving new paths through new buildings as park-like avenues for promenading. Sullivan said the new local street designs cutting up the mega-blocks are still being worked out. She asked, “which streets should be monumental? Which should be local?”

To better get those pedestrians — all those federal workers — to the area, a “better inter-modal system” will be put in place, with a revamped, solar roofed-L’Enfant station, offering both commuter rail and Metro. To ease pressure off Union Station, more commuter rail may be directed there somehow.

The saving grace of the scary L’Enfant Place now is the fountain in Dan Kiley’s Modern-era Benjamin Banneker park, with its dramatic overlook across the Washington Channel. Unfortunately, the rest of Kiley’s park was not well realized. With spaghetti loops of highways cutting through, it’s a matter of taking your life in your own hands to go from the park to the waterfront. In the new plans, Kiley’s park will be completely redone but the area will still serve as a monument to African American surveyor Banneker. The new, more sustainable park will more easily connect to the waterfront while providing a new visual identity for the “eco” part of the district.

Now, on the systems that will make the district more eco: First, many of the old federal buildings will go, getting a revamp so they meet the goals of Obama’s Executive Order 13514, which calls for federal agencies to reduce greenhouse gas emissions, water and energy use. The ones that stay, like the famed Brutalist HUD building, will be updated to be more efficient.

Sullivan said the goal is to have “zero-net energy district as measured in carbon.” Pretty near impossible unless fully renewable power is the rule for the new Eco-District. Sullivan said solar PVs and solar thermal systems (for hot water) will be added to the roofs of the new buildings wherever possible, while ground-source heat will also be tapped. A central facility run by GSA, which runs on natural gas, will still be used (but that won’t get them to zero emissions).

Heading down towards the water, the freeway that cuts off the connection between Benjamin Banneker park and the waterfront will be capped with a new layer covered in solar panels.

For water, the goal is to reduce potable water use throughout the Eco-District by 70 percent and manage all stormwater where it falls. All building greywater will be reused while blackwater will go to the new anaerobic plant. Rainwater will be caught by acres of green roofs (including edible ones), green streets, trees, and planters. What isn’t caught will be funneled into cisterns underneath 10th street and used later. Green infrastructure is then clearly a central part of the strategy. Permeable areas overall are to grow to 35 percent, while the tree canopy is to reach 40 percent (a solid target). (Right now, the barren area has just 8 percent tree cover). While we didn’t hear anything substantive about creating a wildlife-friendly landscape designed to attract diverse species, we hope that’s in the works.

There are more ambitious goals for waste reductions: Some 75 percent of construction materials for the new buildings will be reused, and 80 percent of everyday waste will be diverted from the landfill. A composting program will be put in place, too.

So, how will this all actually work? Sullivan sees some government buildings first getting a light rehabilitation and then others will undergo a full rehabilitation. Three federal buildings will be “re-purposed” as major infill development begins. Then, big redevelopment will start over the freeway. At the same time, critical projects like a new Banneker park and a new 10th street landscape will begin next year.

What’s this all going to cost? Miller and Sullivan said an economic feasibility study only provided some high-level numbers, but they did say the federal government would make back its multibillion dollar investment over 20 years through reduced energy, water, and waste fees; increased revenues from private sector developers; and improved local tax gains.

While we hope this project is a sure thing, new governance structures and partnership and financing agreements will need to be worked out among all the partners, including the private sector developers who are key to making this all happen. Let’s hope this is not a protracted process. As the Eco-District gets moving, it can become an innovative showcase for how to revamp government hubs across the U.S.

Learn more about the bold plans. D.C. residents can attend a public hearing on the proposals on July 19. The comment period will be open for three months. Comments will be incorporated into a final plan ready to go by early 2013. By the end of next year, NCPC hopes to have design competitions launched for a new Banneker park and 10th street, its two priority public projects.

Image credit: ZGF Architects, courtesy of NCPC

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To celebrate High Performance Building Week, the American Society of Landscape Architects (ASLA) is hosting a Congressional green roof reception and tour. Policymakers, design professionals, local media, and interested members of the public are encouraged attend.

In a presentation, ASLA CEO / Executive VP Nancy Somerville, Hon. ASLA, will be covering the economic and environmental benefits of green roofs and green infrastructure. Somerville will explain how green infrastructure is a less expensive solution for controlling stormwater runoff, conserves water and improves water quality, reduces the urban heat island effect, lowers building energy use, improves air quality, stores carbon, and creates biohabitat.

The event is part of an annual set of discussions and tours organized by the High-Performance Buildings Caucus Coalition, a private sector group that works with the High-Performance Buildings Caucus of the U.S. Congress to showcase best practices in building and site design. The Congressional Caucus is focused on increasing awareness among policymakers about the “major impact buildings have on our health, safety and welfare and the opportunities to design, construct and operate high-performance buildings.”

When: Monday, May 14, 2012, 6:00 pm – 8:00 pm

Where: ASLA Headquarters’ Rooftop, 636 Eye Street, NW, Washington, D.C. 20001

RSVP at governmentaffairs@asla.org by Friday, May 11th.

For questions or more information, please contact Roxanne Blackwell, Director, Federal Goverment Affairs, ASLA, at rblackwell@asla.org or 202-216-2334

This is a widely-attended event so attendance is permissible under both the U.S. House of Representatives and U.S. Senate rules.

Image credit: ASLA Green Roof / ASLA

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