Rh.flasl apresentation6.26.12
•Télécharger en tant que PPT, PDF•
1 j'aime•445 vues
Presentation at the 2012 Florida Chapter American Society of Landscape Architects about the Sustainability initiatives of the City of Portland. Topics include low impact development green streets and green roofs.
Recommandé
Recommandé
Contenu connexe
Similaire à Rh.flasl apresentation6.26.12
Similaire à Rh.flasl apresentation6.26.12 (20)
Dernier
Dernier (20)
Rh.flasl apresentation6.26.12
- 1. Sustainability Best Practices for Florida LAs: A panel discussion of Green Techniques Mark Johnson, ASLA Christina Lathrop; ASLA Ruth Hamberg, ASLA Eddie Browder, ASLA FLASLA Renaissance World Golf Village St. Augustine, Florida 2012 ANNUALCONFERENCE AND EXPO Re: Landscape Architecture re:invest re:think re:flect June 28-30, 2012
- 2. Portland – A Model for Green Cities Images: City of Portland, OR and METRO
- 3. Destination: Portland, Oregon Photo from the Portland Plan Handbook On the website www.portlandonline.com
- 4. Portland Climate Action Plan (CAP) http://www.portlandonline.com/bps/index.cfm?c=49989
- 5. Portland CAP Results Image from the Portland Plan brochure, City of Portland
- 6. Metro Government www.oregonmetro.gov The Willamette River Meets the Columbia Photo: Oregon Metro Website
- 7. Livable Cities Boardwalk streetscape in Portland Photo: City of Portland
- 10. Green Roofs Graphic from “Banking on Green” & EPA
- 11. Green Roofs Yes, there is a meadow on the Roof. Meet Tom Liptan, Portland’s Green Roof Guy.
- 12. Green Streets NE Siskiyou Green Street Photo: ASLA website, 2007 General Design Honor Award
- 13. Green Streets NE Siskiyou Green Street Photo: ASLA website, 2007 General Design Honor Award
- 14. Green Streets: Check Dam NE Siskiyou Green Street Photo- Robert Perry, ASLA website, 2007 General Design Honor Award
- 15. SW 12th Ave Green Street : image from the ASLA Awards website by Kevin Perry And the Bureau of Environmental Services City of Portland
- 16. www.portlandonline.com/bes/index.cfm?c =34598 SW 12th Ave Green Street : image from the ASLA Awards website by Kevin Perry And the Bureau of Environmental Services City of Portland
- 17. Green Streets Green Street Planters SW Montgomery St.
- 18. Green Streets
- 19. Green Streets From City of Portland Southwest Montgomery Green Street Book 2009
- 21. 11,000 Acres Preserved and Counting… Images: Portland Metro
- 26. Max Light Rail tracks integrated into streetscape Portland Streetcar Max Light Rail Image: CNU
- 27. Graphic from CNU’s newsletter Better Cities and Towns Jan/Feb 2012
- 30. Farewell, Portland! Thanks for being GREEN!
Notes de l'éditeur
- Portland is consistently rated in the top ten of the most sustainable cities in the US! Portland is consistently in the Top Ten Green US Cities as rated by National Association of Realtors, NRDC Smarter Cities, SustainLane.com… and has won national awards for sustainable city projects. Metro (Regional) government strategic implementation of the long range 2040 plan “Making the Greatest Place” won the EPA National Award for Smart Growth Achievement visionPDX: Portland's Community Visioning Project won an American Planning Association Award 2009
- I had an opportunity to travel to Portland OR last summer. I wanted to find out what makes Portland a Model Sustainable City. Local Government puts an emphasis on sustainability with a Department, staff, funding and projects. A Metropolitan Government was established to coordinate Smart Growth between Cities and Counties. http://www.oregonmetro.gov/index.cfm/go/by.web/id=277.
- Portland and Multnomah County adopted a Climate Action Plan in 2009 with a goal to cut emissions 80% by 2050. You can download it free from the website shown. But the City of Portland has long been a leader in the environmental movement. In 1993, the City of Portland became the first local government in the United States to adopt a plan to reduce carbon emissions. In 2001, Multnomah County joined the City of Portland to adopt a joint plan, the Local Action Plan on Global Warming, that set a goal of reducing carbon emissions to 10 percent below 1990 levels by 2010.
- “These plans supported ambitious carbon reduction efforts, like public transit expansions and new green building policies, that promise to benefit the region’s long-term economic, social and environmental prosperity. These actions helped achieve impressive results, including a reduction in local carbon emissions in 2008 to one percent below 1990 levels, despite rapid population growth. Over the same period, emissions in the United States as a whole increased 13 percent.” -From the Portland Climate Action Plan Executive Summary
- The Metropolitan Government is a regional agency that controls the Urban Growth Boundary and coordinates long range planning. Planning included a huge public outreach effort and through consensus identified regional values to be part of the plan. One of the values: “The region is a leader in minimizing contributions to global warming”. To make cities sustainable they must support transit and reduce sprawl, so a certain amount of density is necessary. Portland has done a great job of creating dense urban areas that are also green, beautiful and livable.
- A LIVABLE CITY. Here is a Quote from the Preservation Institute: “During the 1960s, Portland was a city with serious economic and environmental problems. Today, Portland is an economic and environmental success story. It is so successful that the Wall Street Journal, which is not usually known for its environmental advocacy, has called Portland an “urban mecca” that city planners from all over the country visit to learn how they can control sprawl, reduce automobile dependency, and build lively and attractive pedestrian-oriented neighborhoods.” Portland is also the home of The International Making Cities Livable Council.
- I had a chance to interview Dr. Susan Cowhurst Lennard, Director, International Making Cities Livable Council http://www.livablecities.org/. We discussed the urban design of Portland and what makes it livable. Dr. Lennard asked me “Have you been to Europe?” Me: no. Dr. Lennard: “Oh, you must go to Europe. Portland learned from Europe”. Here’s Dr. Lennard’s Recipe for healthy cities: “… compact, walkable, bike-able, mixed use neighborhoods, access to nature and healthy food, eyes on the street, places and public events that strengthen community.” She talked about designing cities to meet the needs of the children and elderly – then the city will be livable for everyone. Design of places must foster civility and social life.
- This was taken Saturday morning during my visit to the downtown Portland Saturday Market. I could be in Europe. No, I was in Portland. I could see application of the principles discussed by Dr. Lennard manifested around me. Back to the elements of sustainable Cities. Portland is taking action to clean polluted stormwater runoff before it dumps into the river. And Landscape Architects are leading the charge.
- Green Roofs - Why is Portland so obsessed with Green Streets and Green Roofs? Older cities have a “combined sewer system” (CSS) illustrated above, links sanitary and stormwater systems. When there is a heavy rain that creates large volumes of runoff, the total volume exceeds the capacity of the system. When overloaded, the “combined sewer overflows,” or CSOs system dumps polluted sewage into rivers. The City of Portland has a combined sewer. Dumping polluted waste water into the Willamette and Columbia Rivers was against the Clean Water Act.
- While in Portland, I met Tom Liptan, who you might have heard speak at last year’s Florida conference. Tom is an LA with stormwater retention experience hired by Portland. He tried and solve the problem, determined to catch stormwater before it hit the drainage system. Today he heads up Portland’s Green Roof project or “Eco-Roofs”. Tom worked on a Stormwater management manual that came out in 1999. Rain gardens and eco roofs were approved methods in the manual. From tests, he found that green roofs shaved 80-95% off of peak flow. Wow. Plus, Green roofs provide insulation and lowered cooling costs for the building. A green roof lasts twice as long as a conventional roof, about 40 years.
- Stormwater runoff is a major source of pollution. An example of how to handle stormwater before it reaches the sewer is Portland’s NE Siskiyou and SW 12th Ave green street. This project won the 2007 ASLA General Honor Design Award. While in Portland, I met with Kevin Robert Perry, the LA designer of some of Portland’s green streets. The street was retrofitted with two curb extensions planted with wetland plants above the storm drain inlets. Stormwater flows into the landscaped area, slows down and soaks into the ground while wetland plants filter pollutants.
- Here are the NUMBERS: Stormwater runoff from 10,000 square feet of NE Siskiyou Street and neighboring driveways flows until it reaches the 7-foot wide, 50-foot long curb extensions. An 18-inch wide curb cut allows this water to enter each curb extension. Any water that overflows the landscaped areas enters the storm drain inlets.
- How does it work? Stormwater flows into the landscaped area where it is retained to a depth of 7 inches by a series of checkdams. Water will cascade from one "cell" to another until plants and soil absorb the pollutants. The plant system infiltrates water at a rate of 3 inches per hour. How effective is it? Runoff volume estimated at 225,000 gallons from a typical 25-year storm event is reduced by 85 percent by the planted curb extensions.
- Kevin Perry’s 2nd Green Street was SW 12th Ave. This urban green street won the ASLA 2007 General Design Award of Honor. This Green Street disconnects the stormwater runoff from the storm drain system. Instead, water enters a planter and is absorbed by plants.
- What are the numbers? Stormwater runoff drains from 8,000 square feet pavement. Water collects to a depth of 6 inches. In each planter Water soaks into the soil at a rate of 4 inches per hour. There are several planters in a row and runoff overflows from one to another. How effective it it? The annual street runoff, estimated at 180,000 gallons, is managed by its landscape planter system. The planters reduce the runoff of a 25-year storm event by at least 70 percent. In April 2007, the Portland City Council approved a Green Street resolution, report, and policy to promote and incorporate the use of green street facilities in public and private development. The City has free downloadable details available at http://www.portlandonline.com/bes/index.cfm?c=47963 Plus lots more. It’s all free.
- Kevin suggested I check out SW Montgomery green street. Surprise?! It is a pedestrian street through the campus! The street was retrofitted with water absorbing planters. In partnership with Portland State University, the City transformed this site into an attractive stormwater facility.
- These planters create wider sidewalks and “curbless” pedestrian areas. The planters are installed across several blocks that acts as a “stormwater spine” creates a “green” east/west connection through downtown and the Portland State University district. The planters accept both street and building rooftop runoff. What are the numbers? Area for a segment between Broadway and 6th Ave. (pictured) is 13,500 s.f. Here the 25 year peak flow was reduced by 80%.
- The 5’ wide stormwater planters, retains stormwater to a design depth of 4” to 6”, designed as a non-infiltrating, flow-through planter due to extensive underground structures. They provide peak flow reduction and water quality treatment, but provide only partial volume reduction because some volume passes goes to the underdrain system. A key to the effectiveness of these planters is the trees. Tree wells can accept roof runoff plus pavement runoff.
- What about green buildings? The City of Portland has a Green Building Policy and LEED Certification incentive program. In 2001, the City adopted their first LEED policy: All new City-owned projects must achieve LEED NC Gold Certification. The city gives a density incentive for LEED certified private development, such as the 12 West project shown. Per the USGBC LEED Certified Project Directory, there are 165 LEED buildings in Portland.
- Portland’s open space planning is part of it’s green strategies. Thanks to two voter-approved bond measures, the Metro Natural Areas Program has protected more than 11,000 acres across the Portland metropolitan area. The Intertwine is the new name for the region's network of integrated parks, trails and natural areas. At the City level, Portland continues to invest in parks and the urban forest.
- Portland’s parks are a few minutes walk from anywhere. Pictured is the Ira Keller Fountain designed by LA Lawrence Halprin located downtown. Parks, plazas, bike trails all contribute to sustainable livability, healthier citizens and steadily rising property values.
- Portland’s open space planning is no fluke and is appreciated by citizens. The City of Portland has won national awards for Excellence in Park and Recreation Management. The city boasts the famous downtown waterfront park on the Willamette River. But there is a backstory about this park…
- Believe it or not, there used to be an expressway here. Harbor Drive: completed in 1942, a four-lane freeway formed a barrier along the west bank of the Willamette River. The city chose people over cars in 1974, when Harbor Drive was shut down to build Tom McCall Waterfront Park. In the 80’s and again in the 90’s the park was Extended south completing a two-mile long greenway along the river. There is no doubt that replacing the freeway with this park contributed to the overall revitalization of downtown. Source: Old postcard photo and historical Facts from the Preservation Institute.
- Other wonderful Parks include Washington Park, home of the International Rose Test Garden, North and South Park Blocks and Lovejoy Fountain.
- 25% of commuters ride transit, carpool or ride bikes. Portland’s MAX light rail and downtown street car are considered to be a key to successful Green redevelopment efforts, especially downtown. A study by Strategic Economics shows the streetcar dramatically influenced a rise in development since it opened in 2001. After Streetcar, the area built 3 times the density, rating 90% of maximum FAR. By 2008, 3.5 Billion dollars (yes, with a big B) was invested in re-development along the streetcar route. Talk about economic stimulus!
- The streetcar is expanding this year adding 3.3 miles of tracks on the east side of the Willamette River in the fall of 2012.
- Portland’s downtown is very pedestrian and transit friendly. You don’t need a car. You can get almost anywhere using the Max light rail system or streetcar, which are free downtown. I took the red line transit all the way from downtown to the airport for about $2.50.
- Portland is very bike friendly. There are bike lanes and bike parking in convenient locations. Even bike parking in the Parking garage. The light rail has bike parking on the trains. Take your bike to the airport on light rail – there are bike racks waiting there.
- Portland’s green efforts can be an inspiration to us here in Florida. What could our cities accomplish in 30 or 40 years if we follow Portland’s lead?