KEEP IT CLEAN PARTNERSHIP Low Impact Development LID Checklist

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KEEP IT CLEAN PARTNERSHIPLow Impact Development
(LID) Checklist Barriers AnalysisAndrew
Earles, Jane Clary, and Derek RappWright Water
Engineers, Inc.Janice Lopitz, Keep it Clean
Partnership
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Scope of Work

• Questionnaire/ barrier identification
• Develop Review Checklist
• Development Plan Review
• Report/White Paper
• Timeframe March December 2008

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Types of LID Barriers

• Physical
• Institutional
• Barriers for municipalities
• Barriers for engineers
• Barriers for the public

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Laundry List of LID Barriers

• Fear of liability (engineers, owners, reviewers
  approving design)
• Reluctance to try something new/lack of
  demonstration projects
• Lack of education and training
• Lack of common nomenclature (rain garden versus
  porous landscape detention)

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Laundry List of LID Barriers (Cont.)

• Limited design examples/good technical
  documentation
• Costsdesign, construction, operation and
  maintenance, life cycle
• Safety concerns
• Public perception

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Laundry List of LID Barriers (Cont.)

• LID not integrated early in planning process
• Guidance versus requirements
• Compatibility with existing developments
• Water rights (cisterns/rainwater harvesting)

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Laundry List of LID Barriers (Cont.)

• Potential for mixed messages from government
  (different departments)
• No clear economic incentive for using LID
• Difficulty in measuring benefits of LID
• Semi-arid area hydrology

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Laundry List of LID Barriers (Cont.)

• Maintenance and durability
• Long term ownership
• Standing water nuisance problems
• Fear of lengthening review process

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Laundry List of LID Barriers (Cont.)

• Conflicts with municipal code requirements
• American Disabilities Act considerations
• Poorly drained soils
• High groundwater table

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Laundry List of LID Barriers (Cont.)

• Expansive soils construction defect lawsuits
• Other water quality alternatives are easier
• LID does not altogether eliminate need for other
  types of BMPs and drainage infrastructure
• HOA or covenant restrictions

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Laundry List of LID Barriers (Cont.)

• Different guidance/criteria from different groups
  (CWP versus UDFCD versus others)
• Examples of LID failures
• Conflicts with landscaping requirements

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Questionnaire Results (33 Responses)
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Questionnaire Results (33 Responses)
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Results (33 Responses)
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Results (33 Responses)
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Results (33 Responses)
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Results (33 Responses)
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Results (33 Responses)
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Results (33 Responses)
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Development Reviews

• 3 Sites selected
• BoulderRedevelopment ProjectBoulder Manor
• LongmontBig Box Commercial DevelopmentSandston
  e Marketplace
• ErieResidential DevelopmentRedtail Ranch

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Development Reviews (Cont.)

• Level of Detail
• Big Picture
• Identify general LID measures that could
  potentially have been implemented
• Phone interviews with engineers, owners (if
  available to participate) and local reviewers
• Review focused on overall site plan (grading and
  drainage sheets)
• Assume hydrology/ calculations are correct
• Overall goal Identify LID measures feasible for
  site and, if not incorporated in design, why not

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BOULDER MOBILE MANOR
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SANSDTONE MARKETPLACE
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REDTAIL RANCH
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White Paper

• Present LID checklist
• Provide summary of each development review case
• Identify most common LID barriers
• Develop conceptual strategies for
  addressing/overcoming most common barriers to LID
  implementation
• How will white paper be used by KICP?
• Public education for developers, municipal staff
• Basis to seek additional funding for further
  study of strategies to overcome barriers
• Publication in scientific/engineering literature

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Current Opportunities
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CONCEPTUAL APPROACHES TO BARRIERS
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CONCEPTUAL APPROACHES TO BARRIERS
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CONCEPTUAL APPROACHES TO BARRIERS
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CONCEPTUAL APPROACHES TO BARRIERS
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CONCEPTUAL APPROACHES TO BARRIERS
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Regional Opportunities Related to LID

• UDFCD Volume 3 BMP Manual Update
• Model LID chapter
• Emphasis on managing stormwater at the source and
  volume reduction
• Expanded BMPs
• Comment meeting Sept 25 at UDFCD

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Other Local ResourcesDenver Water Quality
Management PlanBMP Implementation Guidelines
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National LID Opportunities

• International Stormwater BMP Database Expansion
  (www.bmpdatabase.org)
• Reclassification of LID studies (fall 2008)
• Better inclusion of LID
• Update of Monitoring Manual to include LID (fall
  2008)

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• Representative LID studies already included
• Urban Drainage and Flood Control District
  (Urbonas)
• University of New Hampshire Studies
  (Ballestero/Roseen/Leonard/Houle)
• Villanova Urban Stormwater Partnership (Traver)
• North Carolina State (Hunt)
• Portland, OR (Liptan)

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New GreenCO BMP Manual

• Contains 39 BMPs to
• reduce landscape water use
• protect water quality
• promote sustainable landscaping
• New additions include Role of Landscaping in Low
  Impact Development
• Now available on CD/hard copy (by download in the
  near future)
• Contacts
• Jane Clary, WWE
• Brenda OBrien, GreenCO

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Questions?

• On KICP project
• Andrew Earles, WWE (aearles_at_wrightwater.com)
• Janice Lopitz, City of Boulder
• BMP Database project
• Jane Clary, WWE (clary_at_wrightwater.com)
• UDFCD Volume 3 Update
• Michelle Delaria or Ken Mackenzie, UDFCD
• (mdelaria_at_udfcd.org or kam_at_udfcd.org)