Why low impact development pccpac
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Presentation to the Pacific City Woods CPAC on 4/16/2011. Please contact author for permission to use all or part of this presentation.
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Why low impact development pccpac
- 1. What’s so Bad about Stormwater&What Does Low Impact Development Do About It? Robert Emanuel, Ph.D. Oregon State UniversityOregon Sea Grant Extension
- 2. “We forget that the water cycle and the life cycle are one.” --Jacques Cousteau
- 3. Where is your community in the watershed?
- 4. Puget Sound Action Team, WSU Pierce County Extension
- 5. Puget Sound Action Team, WSU Pierce County Extension
- 11. Video by Laura James, Seattle, WA
- 13. Photo: Motoya Nakamura/The Oregonian
- 15. Water quality: the stormwater superhighway for non-point pollutants
- 17. Water Quantity Impacts: Flooding & Erosion
- 20. Nutrients (nitrogen, phosphorus)
- 21. Metals (copper*, lead, zinc, cadmium, mercury)
- 22. Oil & grease*
- 23. Cleaning chemicals
- 24. Detergents or soaps
- 25. Bacteria
- 26. Pesticides*
- 27. Increased temperature*Recent studies show link between these pollutants and salmonid olfactory disorientation and pre-spawning mortality.
- 28. The Impervious Surface Budget Parking Lots Roads Driveways Sidewalks 65% transportation 35% structures Offices Stores Houses Patios Derived from the City of Olympia, WA ISRS Final Report
- 32. Low Impact Development plans, ordinances, and best management practices To better protect our watersheds To reduce infrastructure costs To make our communities more attractive
- 42. Pringle Creek Development in Salem
- 43. Kensington Estates Total acres: 23.92 Lots: 103 (4,143 ft2ave.) Open space: 15 acres (63%) Effective impervious area: ~ 0 %
- 44. Kensington Estates Cost Comparison
- 46. Site Practices Slide: Chesapeake NEMO
- 47. © Good Nature Publishing
- 48. A rain garden is a “sunken garden bed” that collects & treats stormwater runoff from rooftops, driveways, sidewalks, parking lots & streets. Graphic: EMSWCD
- 49. How a Rain Garden Works Graphic: EMSWCD
- 51. Portland Community College, Portland OR
- 52. Bay City, OR
- 53. Port Orford, OR Photo: Frank Burris, OSU
- 54. Glencoe Elementary School, Portland, OR
- 55. Photo by Tom Liptan, City of Portland Environmental Services
- 56. Photo Koch Landscape Architecture, City of Portland Environmental Services
- 58. NE 36th and Emerson, Portland Courtesy of Blossom Earth Works
- 59. Humboldt Gardens, N Vancouver Ave, N Portland
- 60. Moving water across a sidewalk Photo courtesy of Portland Environmental Services
- 62. Sandy Blvd, Portland OR
- 63. Other Practices
- 64. Gravel Wetland
- 67. Green Street Planters SW 12th @ Montgomery (PSU)
- 70. Rogue Valley Sewer Services Pringle Creek, Salem, OR
- 71. Shorebank Pacific, Ilwaco, WA
- 72. Alternatives to Pavement overflow parking conventional parking
- 77. Planter Boxes and Street Trees Photo Robert Emanuel, OSU
- 78. What do these strategies cost? What strategies yield greatest benefits? What strategies help build resilience?
- 79. Not all pollution is the same: Effectiveness Site Planning/Land Use Controlling Sources Site-level Practices
- 82. How to Make All of This Happen Pass stormwater management regulation Re-examine local land use controls Permit and promote open-space developments Use landscape features instead of infrastructure Create demonstration projects Collaborate!
- 83. Robert Emanuel, Ph.D.OSU Extension Service FacultyWater Resources & Community Development 2204 Fourth StreetTillamook, OR 97141(503) 842-5708 X 210robert.emanuel@oregonstate.edublogs.oregonstate.edu/h2onc/
Editor's Notes
- Laura James is a long-time scuba diver who lives in Seattle. James and a couple of buddies took video cameras down to where one West Seattle storm drain empties into Elliot Bay. Taken January 18th, after much of the Pineapple Express dumped a lot of water onto Seattle metro area.
- In summary, we get three big issues with stormwater and conventional approaches to its management: too much too fast, poor quality water and increasing costs to maintain the system.
- Emerging evidence that salmon olfactory is damaged. 63 pesticides were found at the source drinking water intake on the Clackamas River, near Portland, Oregon. Glyphosate and its derivative was one of the most frequent pollutants detected. Once invasives are established in an environment, our responsibility is to remove them where possible, but also we should be focusing efforts on preventing them in the first place.
- Gardeners: what’s wrong with this beautiful image?
- Photo: Frank Burris, OSU Extension ServicePort Orford, OR Visitor’s Center Rain Garden
- Glencoe Elementary School, Portland, OR Photo: Derek Godwin, OSU Extension Service
- Ask permission of Tom Liptan and BES
- This is a planter
- Infiltration planter?
- for an estimated budget of $81M. The green solutions included adding more than 500 green streets with vegetated curb extensions or stormwater planters…
- Metro Building in Portland—Green roof covering 9,000 sq. ft. of surface and contrasted with rock-ballast roof that covers other 2/3 of total.