Green Infrastructure Webcast Series - Ohio EPA · Green Infrastructure Webcast Series Archived...
Transcript of Green Infrastructure Webcast Series - Ohio EPA · Green Infrastructure Webcast Series Archived...
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Green Infrastructure Webcast SeriesGreen Infrastructure Webcast SeriesRetrofits: Green Streets
Operation and Maintenance
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Green Infrastructure Websitewww.epa.gov/greeninfrastructure
• General Information
• Key Resources• Case Studies• Performance
Data• Partnership
Contacts• Statement of
Support
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Green Infrastructure Webcast SeriesGreen Infrastructure Webcast SeriesArchived webcasts on the following topics:
• Benefits of Green Infrastructure• Municipal Case Study: Philadelphia• Revising Local Plans, Codes and Ordinances• Water Harvesting• Models & Calculators• Municipal Case Study: Louisville• Site Planning & Design Considerations• Costs and WERF Cost Tool• Funding and Incentives• Brownfield Redevelopment
Additional webcasts coming late Fall – Stay tuned!
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Green Highways and Green Streets:
Green Infrastructure
Presented by:
The Low Impact Development Center, Inc. A non-profit water resources and sustainable design organization
www.lowimpactdevelopment.org
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Copyright 2009 Low Impact Development Center, Inc.
Presentation
Background on Green Highways and Green StreetsResearch ImplementationCase Studies
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Copyright 2009 Low Impact Development Center, Inc.
Green Infrastructure
“Green infrastructure is an interconnected network of green space that conserves natural ecosystem values and functions and provides associated benefits to human populations. As a stormwater treatment approach, Green infrastructure uses natural and engineered systems to cleanse water and reduce excess volumes by filtering and treating it using plants, soils, and microbes. “
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Copyright 2009 Low Impact Development Center, Inc.
What makes a highway or a street green?
Courtesy of Anne English
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Copyright 2009 Low Impact Development Center, Inc.
Naval District Washington LID Demonstration Projects
Navy, Army, and DOD have numerous LID and Green Infrastructure projects in the Chesapeake Bay Region
Pilots!
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Copyright 2009 Low Impact Development Center, Inc.
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Copyright 2009 Low Impact Development Center, Inc.
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Copyright 2009 Low Impact Development Center, Inc. Building 166 Permeable Pavement
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Copyright 2009 Low Impact Development Center, Inc.
Pervious ConcreteServing Site of 2008 Super Bowl – Glendale, Ariz.
Park & Ride Parking Lot (4 acres)
Courtesy NRMCA Foundation
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Copyright 2009 Low Impact Development Center, Inc.
Heat Island, Energy, and
Evapo-Transpiration
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Copyright 2009 Low Impact Development Center, Inc.
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Copyright 2009 Low Impact Development Center, Inc. Ready Mix Concrete Research & Education Foundation
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Copyright 2009 Low Impact Development Center, Inc. EPA Headquarters
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Copyright 2009 Low Impact Development Center, Inc.
WERF Decentralized Controls for Urban Retrofit Phases I, II and III
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Copyright 2009 Low Impact Development Center, Inc.
WERF Decentralized Controls for Urban Retrofit Phases I, II and III
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Copyright 2009 Low Impact Development Center, Inc.
Decentralized controls integrated into urban infrastructure
BMP Infiltration ET* Interception Conveyance Detention Retention Reuse** Downspout Disconnection Filter Strips Infiltration Practices Pocket Wetlands Porous Pavement Rain Barrels/Cisterns Rain Gardens Soil Amendments Tree Box Filters Vegetated Roofs Vegetated Swales * Evapotranspiration ** Collected water can be used for landscaping, non-potable building uses (e.g., toilets), or as raw water to be treated for drinking. Key: High reliance Medium reliance Low reliance Blank: N/A Rankings are qualitative. “High reliance” means that the process is integral to the BMP’s ability to meet stormwater management objectives, and that the BMP uses the process to its full potential in the urban environment. “Medium reliance” was assigned when a process is a secondary component of the BMP’s operation, or when the BMP does not use the process to its full potential. “Low reliance” means that the process only marginally contributes to the BMP’s ability to meet stormwater management objectives. The rationale for ranking hydrologic cycle elements is given in Section 2.3.2.
WERF Decentralized Controls for Urban Retrofit Phases I, II and III
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Copyright 2009 Low Impact Development Center, Inc.
Integration into the linear environment
Pilots and researchRoad codes, standards, details Environmental Management Systems
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Copyright 2009 Low Impact Development Center, Inc.
Large R-O-W’s for suburban/rural arterials
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Copyright 2009 Low Impact Development Center, Inc.
Compost amendments and filter soxx
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Copyright 2009 Low Impact Development Center, Inc.
Pretreatment Grass Swale
Swale
Pretreatment Check Dams
Samplers
Courtesy AP DavisUMCP and MDSHA
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Copyright 2009 Low Impact Development Center, Inc.
0
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DirectSHAMDERainfall
Flows 11/16/05 Storm Event
Courtesy Allen Davis, UMCP
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Copyright 2009 Low Impact Development Center, Inc. Urban retrofit and reconstruction
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Copyright 2009 Low Impact Development Center, Inc.
LOCATION • Either side of a closed-
section roadway (median or shoulder)
FIXED-OBJECT HAZARD? • No
EFFECTIVENESS
• Water quality MEDIUM • Volume N/A • Peak discharge LOW
STORAGE CAPACITY • None
TARGETED POLLUTANTS
• Total Suspend Solids • Fecal coliform • Oxygen depleting
substances Figure 8.1. Gutter filter along U.S. Route 1, Mount Rainier, MD._
NCHRP LID Manual
Sitting Guidelines
Materials
Hydrology Hydraulics
Treatment Train/Process
Construction
Maintenance
Safety
NCHRP 25-31
Guidelines for Evaluating and Selecting Modifications to Existing Roadway Drainage Infrastructure to Improve Water Quality in Ultra-Urban AreasGeosyntec, Oregon State University, Venner Consulting, Wright Water Engineers
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Copyright 2009 Low Impact Development Center, Inc.
Constructability
“Mt. Ranier Project by MDOT, UMCP, and LIDC selected as one of years 10 best water quality projects by the Sierra Club”
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Copyright 2009 Low Impact Development Center, Inc.
MOT
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Copyright 2009 Low Impact Development Center, Inc.
High Return on Investment
•Permeable Block Pavers
•Permeable Concrete
•Asphalt Overlays
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Copyright 2009 Low Impact Development Center, Inc.
Alternative Materials
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Copyright 2009 Low Impact Development Center, Inc.
8th Street – Barracks Row
The streetscape design features environmental innovations including a continuous five-foot-wide strip along the curb to collect most of the surface runoff from the wide sidewalks and a continuous root zone to help promote the growth of new street trees.
Lily Turf planting beds visually break up wide sidewalks, with bluestone paved areas allowing pedestrian crossing onto new brick sidewalks.
Additional street trees and pedestrian scale Washington globe lights, new bicycle racks, trash receptacles, and cobblestone alleys enhance the historic commercial environment.
Courtesy of Lee + Papa and Associates
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Copyright 2009 Low Impact Development Center, Inc.
Green Strategies
Bioretention
Permeable Walks
Reforestation
Soil Amendments
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Copyright 2009 Low Impact Development Center, Inc.
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Copyright 2009 Low Impact Development Center, Inc.
Erosion and Sediment Control and Site Restoration
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Copyright 2009 Low Impact Development Center, Inc.
Procurement and Inspection
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Copyright 2009 Low Impact Development Center, Inc.
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Copyright 2009 Low Impact Development Center, Inc.
System integration, consistency and sustainability
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Copyright 2009 Low Impact Development Center, Inc.
The Green Highways Partnership (GHP) is a voluntary, public/private initiative that is revolutionizing transportation infrastructure. Through integrated planning, regulatory flexibility, and market-based rewards, GHP seeks to incorporate environmental streamlining and stewardship into all aspects of the highway lifecycle.
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Copyright 2009 Low Impact Development Center, Inc.
•Watershed driven stormwater management
•Recyclables and reuse
•Conservation
Green Highways Partnership Theme Teams
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Copyright 2009 Low Impact Development Center, Inc.EPA/FHWA Grant
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Copyright 2009 Low Impact Development Center, Inc.
Newsflash!!!•LIDC and EPA Region 3 establish Green Highways Partnership Training and Development Center (GHPTADC). First ASCE Webinar Fall 2009. Training and Certificate program begins 2010.
•ASCE First National Conference on Green Highways and Green Streets Denver 2010
•Special Sessions at the Low Impact Development Conference Spring 2010
•GHP Digest
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Copyright 2009 Low Impact Development Center, Inc.
Planning and Site Design
Courtesy of Hines Development
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Copyright 2009 Low Impact Development Center, Inc. Courtesy of Lee + Papa and Associates
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Copyright 2009 Low Impact Development Center, Inc. Courtesy of Forest City Development and VIKA
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Copyright 2009 Low Impact Development Center, Inc.Courtesy of Philadelphia Water
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Copyright 2009 Low Impact Development Center, Inc.
West Mill Creek
BMPs:Disconnected Inlets, Pervious Pavers, Subsurface Infiltration
Philadelphia Demonstration Projects
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Copyright 2009 Low Impact Development Center, Inc.
City of Baltimore
Green Streets Master Plans
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Copyright 2009 Low Impact Development Center, Inc.
PlaNYCAdditional retrofit programs may be required to lower the overall impermeability of the right of way. The Greenstreets program of small plantings in the right of way is one of our most successful retrofit programs. PlaNYC has already committed the funding and planning for 80 new Greenstreets every year for the next decade, with the goal of bringing the total number to 3,000 by 2017. The Parks Department is experimenting with new design standards that would allow for more storage of street runoff. Wehave evaluated the impacts of a strategy of expanding the Greenstreet program, either by doubling the number built every year, or extending the commitment from 2018 to 2030, an additional 12 years.
…..the City could use this strategy to target intersections proneto nuisance flooding or sub-watersheds with specific CSO problems. Greenstreets are also desirable for other, non-stormwater reasons. They provide community amenities and a positive impact on real estate values, quality of life, and cooling. And their highly-visible presence in the right of way, adjacent in many cases to pedestrian areas, means that Greenstreets installations could provide a unique opportunity for public outreach and education about stormwater impacts and controls.
•Targeted
•Incremental
•Predictable
•Comprehensive
•Cross-cutting
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Copyright 2009 Low Impact Development Center, Inc.
Chesapeake Bay Trust Urban Greening Grant
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Copyright 2009 Low Impact Development Center, Inc.
Edmonston, MDA Great Green Town
Community revitalization through the use of low impact development, attraction of green businesses, and attention to health by encouraging biking and walking.
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Copyright 2009 Low Impact Development Center, Inc.
A Model for Sustainable, Green Land Use Planning for Low Income Communities located in the
Anacostia River Watershed of the Chesapeake Bay“From Main Streets to Green $treets!”
Using Green Highways and Green Infrastructure to revitalize our communities:Green Stimulus Plan for the Town of Edmonston, Maryland
What makes this a "Green Street"?
• A Top (tree canopy) to bottom (water quality) plan
• Native tree canopy
• Street lighting with clean energy
• Walking, running, and biking
• Recycled materials
• Stormwater bioretention and filtration
• Open process and public engagement
• Education and replication
Anticipated Project Benefits:
Social Benefits:• Reduction in urban heat
island effect• Provides “Green Job”
opportunities• Educational through street
kiosks• Crime reduction benefit • Health benefit
Economic Benefits:• Energy cost reduction and
water conservation• “Green Enterprise” business
opportunities
Environmental Benefits:• Carbon sequestration • Improved water quality
through 90% capture of stormwater
• Carbon footprint reduction • Recycling and beneficial
reuse
What is…
What could be…Low Impact Development Center,
Incwww.lowimpactdevelopment.org
Green Highways Partnership
www.greenhighways.org
Chesapeake Bay Trustwww.cbtrust.org
American Recovery and Reinvestment ActFrom Main Streets to Green $treets!: Collaboration for Prosperity and Sustainability
Bioretention on family-friendly street edgeSource: Portland Bureau of Environmental Services
Traffic calming and signature green space at street entry
Source: Portland Bureau of Environmental Services
Rain gardens for viewing; pedestrian-friendly permeable concrete walks
Source: LID Center
Permeable interlocking concrete pavement (PICP) in parking lanes
Source: Portland Bureau of Environmental Services
Streets constructed of pervious concrete pavement or other permeable surfaces
Source: City of Bellingham, WA
Curb bump-outs/extensions provide bioretention areas; traffic calming measures
improve safetySource: LID Center
Solar trash compactor;
Program information on
trash canSource: LID
Center
ADA-compliant PICP
Source: ICPI
Energy-efficient light fixtures;
Banner standards on
light polesSource: Cannell
Graphics
Greening Tools…
Planning for environmentally sustainable growth in the Anacostia Watershed
Green Streetsby the Green Highways
Partnership
Rain garden, Maplewood, MNSource: City of Maplewood, MN
Recreation, alternative transportation supportSource: Damien Newton,
Streetsblog.org
Educational sign explaining greening practices
Source: Chuck Taylor, Advanced Pavement Technology
Bioretention next to pervious concrete with recycled materials
for edgesSource: LID Center
Benches for local recycling and art opportunities
Source: LID Center
Source: LID Center Source: LID Center
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Copyright 2009 Low Impact Development Center, Inc.
EPA Region 3 and Headquarters creates partnerships with federal, state, local, and local governments that leverage resources for economic revitalization and environmental restoration.
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Copyright 2009 Low Impact Development Center, Inc.
Just a few resources…
http://lowimpactdevelopment.org/green_highways.htmhttp://greenhighways.orghttp://trb.org/CRP/About/Div.asphttp://asce.orghttp://cfpub.epa.gov/npdes/home.cfm?program_id=298http://www.icip.orghttp://www.rmc-foundation.org/http://www.fhwa.dot.gov/http://www.washingtonpost.com/wp-dyn/content/article/2009/07/22/AR2009072203470.html
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Copyright 2009 Low Impact Development Center, Inc.
Green Highways and Green Streets let you…
• Develop integrated watershed planning approaches
• Leverage resources• Integration green elements into
infrastructure• Create partnerships and cross-cutting
programs• Create Context Sensitive Solutions
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Seattle Public Utilities Seattle Public Utilities Green Green StormwaterStormwaterInfrastructure: Infrastructure: Operations and Operations and MaintenanceMaintenance
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Presentation OutlinePresentation Outline•• Green Green StormwaterStormwater
Infrastructure (GSI) Infrastructure (GSI) Program OverviewProgram Overview
•• Natural Drainage Natural Drainage Systems partnering Systems partnering with Residentswith Residents
•• Natural Drainage Natural Drainage Systems O&M package Systems O&M package
•• O&M requirements for O&M requirements for Code complianceCode compliance
•• O&M requirements for O&M requirements for residents receiving residents receiving incentivesincentives
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Goals of GSI Use in SeattleGoals of GSI Use in Seattle
•• Separated BasinsSeparated Basins–– Creeks: water quality Creeks: water quality
and flowand flow–– Puget Sound: water Puget Sound: water
qualityquality
•• Partially Separated Partially Separated and Combined and Combined BasinsBasins
–– CSO complianceCSO compliance–– Sanitary Sewer backup Sanitary Sewer backup
reductionreduction
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Locations of GSILocations of GSI
•• RightRight--ofof--WayWay–– Retrofits by Seattle Public Retrofits by Seattle Public
Utilities (aka Utilities (aka Natural Natural Drainage SystemsDrainage Systems))
–– StormwaterStormwater Code Code ComplianceCompliance
•• Private ParcelsPrivate Parcels–– StormwaterStormwater Code Code
ComplianceCompliance–– Seattle funded Incentives Seattle funded Incentives
(Residential (Residential RainwiseRainwise))
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Natural Drainage SystemsNatural Drainage Systems
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NDS Maintenance By ResidentsNDS Maintenance By Residents
•• Initial ConceptInitial Concept
•• Watering and Watering and weedingweeding
•• Grand VisionsGrand Visions
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Best Case ScenarioBest Case Scenario
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Homeowners Landscape Homeowners Landscape Maintenance ManualMaintenance Manual
•• Distributed to Distributed to homeowners living homeowners living adjacent to adjacent to systemssystems
•• Identifies Identifies responsibilities of responsibilities of the City and the the City and the homeownerhomeowner
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Work Parties and ToursWork Parties and Tours
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RealityReality
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Homeowners Homeowners front yard is front yard is good indicator of good indicator of gardening level gardening level of interest.of interest.(Plant palette (Plant palette should be should be adjusted adjusted accordingly!)accordingly!)
NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
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Plant Palette Plant Palette choiceschoices
NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
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Be clear with your messaging from the start.
• What are the city’s responsibilities?
• What is the homeowner expected to do?
NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
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“The city will maintain the functional elements of the natural drainage system, whether the swale is an eyesore or an amenity is up to you”
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Natural Drainage Systems (NDS) Natural Drainage Systems (NDS) Operations and MaintenanceOperations and Maintenance
•• NDS O&M Maintenance PackageNDS O&M Maintenance PackageI.I. NDS Maintenance Manual for ROW NDS Maintenance Manual for ROW II.II. O&M Facility Checklists O&M Facility Checklists III.III. Key Performance IndicatorsKey Performance IndicatorsIV.IV. O&M Estimating Database ToolO&M Estimating Database Tool
•• Lessons LearnedLessons Learned
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I. NDS Maintenance ManualI. NDS Maintenance Manual•• For facilities in the RightFor facilities in the Right--ofof--Way Way
–– BioretentionBioretention–– BiofiltrationBiofiltration–– Permeable PavementsPermeable Pavements
•• Defines RoutineDefines Routine and Nonand Non--routine maintenance routine maintenance activities based on Levelactivities based on Level--ofof--Service set for the Service set for the given systemgiven system
•• Used in combination with Inspection/checklistUsed in combination with Inspection/checklist•• Used to guide scheduling of maintenance Used to guide scheduling of maintenance
activitiesactivities
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NDS Maintenance Manual: NDS Maintenance Manual: SectionsSections
1.1. Vegetation and LandscapingVegetation and Landscaping2.2. System FunctionalitySystem Functionality3.3. HardscapeHardscape and Infraand Infra--StructureStructure4.4. Infiltration Failure Infiltration Failure –– Swale Swale PondingPonding5.5. Recommended Maintenance for Other Recommended Maintenance for Other
ElementsElements6.6. Safety, Mobility, and AccessibilitySafety, Mobility, and Accessibility
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Levels of Service (LOS)Levels of Service (LOS)
•• LOS ALOS A–– Excellent effortExcellent effort
•• LOS BLOS B–– Good effortGood effort
•• LOS CLOS C–– Moderate effortModerate effort
•• LOS DLOS D–– Poor effortPoor effort
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Layout and How ToLayout and How To•• Select the desired Service Level for maintenanceSelect the desired Service Level for maintenance
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Ease of UseEase of Use
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11--Vegetation and Landscape Vegetation and Landscape MaintenanceMaintenance
Example Example --Level of Service B:Level of Service B:•• BioBio--retention swales are retention swales are
mostly self sustainingself sustaining•• Maintenance for Maintenance for
functionality after functionality after establishment periodestablishment period
Level of Service B – Good Effort
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11--Vegetation and Landscape Vegetation and Landscape MaintenanceMaintenance
Example: Level of Service Example: Level of Service B checklist includes:B checklist includes:
•• Vegetation is mostly healthyVegetation is mostly healthy•• Good appearance Good appearance •• Small quantities of weeds Small quantities of weeds •• Edges are loosely definedEdges are loosely defined•• Grass encroaching on the Grass encroaching on the
swale (or vice versa)swale (or vice versa)
•• Insert photoInsert photo
Levels of Service B Levels of Service B -- GoodGood
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11--Vegetation and Landscape Vegetation and Landscape Maintenance: Noxious and Maintenance: Noxious and Nuisance WeedsNuisance Weeds
•• Special considerations Special considerations need to be identifiedneed to be identified
•• Provide link to Provide link to jurisdictionjurisdiction’’s web sites web site
•• PhotosPhotos•• Identification keyIdentification key•• Reporting Reporting
requirements requirements –– if if applicableapplicable
Spotted KnapweedSpotted Knapweed
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22--System FunctionalitySystem Functionality
Critical criteria for Critical criteria for achieving design achieving design function.function.
For example LOS C for For example LOS C for biofiltrationbiofiltration
•• 40% to 60% bottom 40% to 60% bottom covered with healthy covered with healthy vegetationvegetation
•• Uniformed fineUniformed fine--stemmed at least 18 stemmed at least 18 to 24 inches highto 24 inches high
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22--System FunctionalitySystem Functionality
For example LOS C for For example LOS C for bioretentionbioretention
•• Evidence of vehicle Evidence of vehicle compactioncompaction
•• Many bare spots Many bare spots •• Significant level of Significant level of
sediment and debris sediment and debris accumulationaccumulation
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33--Hardscape and InfraHardscape and Infra--StructureStructure
•• Debris and sediment removalDebris and sediment removal•• Clearing and cleaning Clearing and cleaning
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33--Hardscape and InfraHardscape and Infra--Structure : Structure : Long Term MaintenanceLong Term Maintenance
•• For lifecycle costing with For lifecycle costing with bioretentionbioretention, we , we assume every fifteen years, remove and assume every fifteen years, remove and replace top two inches of soil and replant replace top two inches of soil and replant to restore infiltration functionto restore infiltration function
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44--Infiltration FailureInfiltration Failure
•• Evidence of a cell holding water for more Evidence of a cell holding water for more than 24 hours needs to be reported to than 24 hours needs to be reported to Operations and Maintenance Asset Operations and Maintenance Asset ManagerManager
•• Monitor swale for Monitor swale for pondingponding waterwater•• Retrofit swale if standing water greater Retrofit swale if standing water greater
than 72than 72--hourshours
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55--Recommended Maintenance for Recommended Maintenance for Other ElementsOther Elements
•• Pest controlPest control•• Spill prevention Spill prevention
and responseand response•• SafetySafety•• MobilityMobility•• AccessibilityAccessibility•• Permeable Permeable
pavementspavements•• Irrigation Irrigation
systemssystems
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66--Safety, mobility, accessibilitySafety, mobility, accessibility
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Manual is a Working DocumentManual is a Working Document
•• Work, work, work with field crewsWork, work, work with field crews•• Update photos to continue refining Update photos to continue refining
documentdocument•• Document Document
lessons learnedlessons learned
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Natural Drainage Systems (NDS) Natural Drainage Systems (NDS) Operations and MaintenanceOperations and Maintenance
•• NDS O&M Maintenance PackageNDS O&M Maintenance PackageI.I. NDS Maintenance Manual for ROW NDS Maintenance Manual for ROW II.II. O&M Facility Checklists O&M Facility Checklists III.III.Key Performance IndicatorsKey Performance IndicatorsIV.IV. O&M Estimating Database ToolO&M Estimating Database Tool
•• Lessons LearnedLessons Learned
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II. O&M Facility ChecklistsII. O&M Facility Checklists
•• Condensed version of Condensed version of manualmanual
•• Identify key Identify key performance performance indicatorsindicators
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III. Key Performance Indicators III. Key Performance Indicators ((KPIKPI’’ss))
•• Determine LOS achieved Determine LOS achieved for swalesfor swales
•• Provides an overall Provides an overall reporting score for high reporting score for high level managementlevel management
•• Indicators help identifyIndicators help identify–– successessuccesses–– areas of improvementareas of improvement–– failures for each failures for each
systemsystem
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Vegetation Estimated O&M CostsVegetation Estimated O&M CostsAnnual
ValueInitial 3 year Landscape Establishmentassuming 0% community participation $65,221
Established (starting year 4)0% community participation $28,61525% community participation $21,46150% community participation $14,30875% community participation $7,15490% community participation $2,862
Soil Replacement (every 15yrs) $23,527
LOS B – 47,290 SQ FT
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NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
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NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
Water costs can Water costs can increase plant increase plant establishment establishment costs by 100costs by 100--400%400%
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NDS Maintenance: Lessons LearnedNDS Maintenance: Lessons Learned
Parking will Parking will affect edge of affect edge of vegetationvegetation
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StormwaterStormwater Code ComplianceCode Compliance
•• Proposed 2009 Proposed 2009 StormwaterStormwater Code Code requires GSI to MEFrequires GSI to MEF
•• Code applies to both Code applies to both work in rightwork in right--ofof--way and way and on parcels on parcels
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O&M for O&M for stormwaterstormwater Code Code ComplianceCompliance
•• Define Green Define Green StormwaterStormwaterInfrastructure Minimum Infrastructure Minimum O&M requirementsO&M requirements
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Code Compliance for facilities in Code Compliance for facilities in RightRight--ofof--wayway
http://www.seattle.gov/dpd/Planning/Stormwater_Grading_and_Drainage_Code_Revisions/Overview/
•• Require construction Require construction installation checklist installation checklist signed by GSI designersigned by GSI designer
•• Require applicants to Require applicants to provide a 2provide a 2--year year warranty period. (same warranty period. (same as Portland)as Portland)
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High Point O&M High Point O&M ManualManual
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O&M requirements for receiving O&M requirements for receiving Financial incentivesFinancial incentives
•• Residence in target Residence in target basinbasin
•• Signed Homeowner Signed Homeowner agreementagreement
•• Must agree to care Must agree to care for facility for 5 for facility for 5 yearsyears
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Questions?
www.seattle.gov/util/naturalsystems
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Participation Certificate
• If you would like to obtain participation certificates for multiple attendees, click the link below
• You can type each of the attendees names in and print the certificates
http://www.epa.gov/npdes/webcasts/certificate/gi_retrofit_o&m.pdf