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Crafting Stormwater Crafting Stormwater ProgramsPrograms
Oregon Coastal Planners Fall Network MeetingOregon Coastal Planners Fall Network MeetingOctober 9, 2008October 9, 2008
Florence Event CenterFlorence Event CenterAlissa Maxwell, PEAlissa Maxwell, PE
Major Stormwater Program Major Stormwater Program ElementsElements
Design StandardsDesign Standards
Development Review and InspectionDevelopment Review and Inspection
Stormwater Master Plan and Management Stormwater Master Plan and Management PlanPlan
Stormwater UtilityStormwater Utility
Ordinances Ordinances
Design StandardsDesign Standards
Goals: Goals: ► Requirements and Engineering Standards for new Requirements and Engineering Standards for new
developmentsdevelopments► Preserve water quality, protect downstream Preserve water quality, protect downstream
watercourses, limit erosionwatercourses, limit erosion► Set a level playing field for proposed developmentsSet a level playing field for proposed developments
Design Standards should be:Design Standards should be:► Consistent with Environmental RegulationsConsistent with Environmental Regulations► Regionally appropriateRegionally appropriate► Tailored to local community concernsTailored to local community concerns
Design StandardsDesign Standards
Primary:Primary:► Flow ControlFlow Control► Water Quality TreatmentWater Quality Treatment► ConveyanceConveyance► Erosion ControlErosion Control
Secondary:Secondary:► Calculation MethodsCalculation Methods► Low Impact DesignLow Impact Design► Source ControlSource Control► MaintenanceMaintenance
Thresholds and Exemptions:Thresholds and Exemptions:► Flow control not appropriate near major waterways or Flow control not appropriate near major waterways or
oceanocean► 5,000 sf impervious or 1 acre total development5,000 sf impervious or 1 acre total development► Reduced requirements for single lot developmentsReduced requirements for single lot developments
Design StandardsDesign Standards
Performance BasedPerformance Based► Developer must prove certain outcomes will be metDeveloper must prove certain outcomes will be met► Municipal staff must review and approve designs and analysis Municipal staff must review and approve designs and analysis
methodsmethods► Data intensiveData intensive► High cost for every projectHigh cost for every project
Design BasedDesign Based► Identifies a set of acceptable facilities, BMPs, and analysis Identifies a set of acceptable facilities, BMPs, and analysis
methodsmethods► Developers know the rules ahead of timeDevelopers know the rules ahead of time► Clearer review guidelines for municipal staffClearer review guidelines for municipal staff► Predictable, consistent requirements and costsPredictable, consistent requirements and costs
Development Review and Development Review and InspectionInspection
► Planning SubmittalPlanning Submittal General facility overviewGeneral facility overview Background Investigations – soils, wetlands, etcBackground Investigations – soils, wetlands, etc
► Construction Plan SubmittalConstruction Plan Submittal Engineering DetailsEngineering Details Design ReportDesign Report
► InspectionsInspections Erosion and Sediment Control measuresErosion and Sediment Control measures Stormwater Facility InstallationStormwater Facility Installation Final Site StabilizationFinal Site Stabilization
Stormwater Master Plan and Stormwater Master Plan and Management PlanManagement Plan
► Stormwater Master PlanStormwater Master Plan Identifies Infrastructure needs now and in the FutureIdentifies Infrastructure needs now and in the Future
► Stormwater Management PlanStormwater Management Plan Outlines Activities and OperationsOutlines Activities and Operations
Management Plan Topics:Management Plan Topics:► Inventory and MappingInventory and Mapping► MaintenanceMaintenance
Frequency, Standards, Budget, Staffing, EquipmentFrequency, Standards, Budget, Staffing, Equipment► Capital ProgramCapital Program
From Stormwater Master Plan, Needs Inventory, or Regional From Stormwater Master Plan, Needs Inventory, or Regional PlanningPlanning
► Public EducationPublic Education► Regulatory ComplianceRegulatory Compliance
Stormwater UtilityStormwater Utility
► Dedicated Funding SourceDedicated Funding Source► Separate Stormwater Program Operating BudgetSeparate Stormwater Program Operating Budget
Used for operations, maintenance, and capital projectsUsed for operations, maintenance, and capital projects► Increasingly Common in Pacific NorthwestIncreasingly Common in Pacific Northwest
Funding Sources:Funding Sources:► Utility fee on all propertiesUtility fee on all properties
Rates based on impervious coverageRates based on impervious coverage Typically $4-$12/month per residential propertyTypically $4-$12/month per residential property
► SDCs for new developmentSDCs for new development► Grants, Loans, BondsGrants, Loans, Bonds
OrdinancesOrdinances
► Adopt Design StandardsAdopt Design Standards► Adopt Stormwater Master Plan and/or Management Adopt Stormwater Master Plan and/or Management
PlanPlan► Establish Utility Structure and RatesEstablish Utility Structure and Rates► Prohibit Illicit DischargesProhibit Illicit Discharges► Establish Enforcement AuthorityEstablish Enforcement Authority
Model ordinances are availableModel ordinances are available
Next Steps for Coastal Next Steps for Coastal CommunitiesCommunities
► Partner together to establish Design StandardsPartner together to establish Design Standards Cost and Time EffectiveCost and Time Effective Consistent standards through the regionConsistent standards through the region Base standards on accepted best practices and existing Base standards on accepted best practices and existing
manualsmanuals
► Adopt Ordinances and/or Stormwater UtilityAdopt Ordinances and/or Stormwater Utility Use model ordinances tailored to local needsUse model ordinances tailored to local needs Widespread adoption helps develop community and Widespread adoption helps develop community and
council supportcouncil support
► Partner to Partner to develop and distribute educational materialdevelop and distribute educational material
ResourcesResources
EPA Training WebcastsEPA Training Webcastswww.epa.gov/npdes/trainingwww.epa.gov/npdes/trainingFree live and archived webcasts on stormwater program Free live and archived webcasts on stormwater program topics. topics.
Stormwater Manager’s Resource CenterStormwater Manager’s Resource Centerwww.stormwatercenter.netwww.stormwatercenter.netTechnical tools and resources; slide shows, manuals, Technical tools and resources; slide shows, manuals, checklists, and model ordinances.checklists, and model ordinances.
Center for Watershed ProtectionCenter for Watershed Protection www.cwp.orgwww.cwp.orgResearch, design manuals, program guidelines, and model Research, design manuals, program guidelines, and model ordinances.ordinances.
Puget Sound PartnershipPuget Sound Partnership www.psp.wa.govwww.psp.wa.gov//Publications from the Puget Sound Action Team – the leading Publications from the Puget Sound Action Team – the leading resource for low impact development guidance in the Pacific resource for low impact development guidance in the Pacific Northwest.Northwest.
Resources: Design ManualsResources: Design ManualsCity of Portland BES Stormwater Management ManualCity of Portland BES Stormwater Management Manual
http://www.portlandonline.com/bes/index.cfm?c=47952&http://www.portlandonline.com/bes/index.cfm?c=47952&
Clean Water Services Design and Construction StandardsClean Water Services Design and Construction Standardshttp://www.cleanwaterservices.org/PermitCenter/DesignAndConstruction/default.aspxhttp://www.cleanwaterservices.org/PermitCenter/DesignAndConstruction/default.aspx
Stormwater Management Manual for Western WashingtonStormwater Management Manual for Western Washingtonhttp://www.ecy.wa.gov/programs/wq/stormwater/manual.htmlhttp://www.ecy.wa.gov/programs/wq/stormwater/manual.html
ODOT Hydraulics ManualODOT Hydraulics Manualhttp://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/hyd_manual_info.shtmlhttp://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/hyd_manual_info.shtml
DEQ Erosion and Sediment Control ManualDEQ Erosion and Sediment Control Manualhttp://www.deq.state.or.us/wq/stormwater/escmanual.htmhttp://www.deq.state.or.us/wq/stormwater/escmanual.htm
Rogue Valley Stormwater Quality Design ManualRogue Valley Stormwater Quality Design Manualhttp://www.rvss.us/Documents/Stormwater/DesignManual.pdfhttp://www.rvss.us/Documents/Stormwater/DesignManual.pdf
Central Oregon Stormwater ManualCentral Oregon Stormwater Manualhttp://www.coic.org/stormwater/index.htmhttp://www.coic.org/stormwater/index.htm
Contact InformationContact Information
Alissa Maxwell, PEAlissa Maxwell, PE
Water Resources Engineer | Otak, IncWater Resources Engineer | Otak, Inc
541.385.9960 | [email protected] | [email protected]
