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8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
BuildingGreenInfrastructureinNewEngland:WatershedInterventionsthatWork
Juli Beth Hinds, AICPVHB Pioneer, North Ferrisburgh, VT
July 8, 2009
Managing Wet Weather Flows with Green Infrastructure
FourGreenInfrastructure/WetWeatherFlowManagementProjects
Wellesley, MA: West Campus Project
Burlington, VT: Englesby Pond & Marsh
South Burlington, VT:
Farrell Street ProjectBartlett Brook Stormwater Treatment System
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
ProjectFeatures:1. Total Project Costs of $0.3 to $2.5 million
multiple funding sources
2. Retrofits of existing impervious surface
3. Watershedbased, notparcelbased
4. Dealt with variety of wet weather issues:flooding/hydrology, nutrients, sediment, bacteria/beachclosures, bank erosion
5. Significant rerouting of existing drainage systems
into new landscapes & systems6. Combination of solutions and techniques
7. **Great water quality outcomes!
Managing Wet Weather Flows with Green Infrastructure
WatershedPlan
Design/ Eng.
Cost Key WQConcern
Techniques Used
KeyResult
WellesleyCollege
WestCampusPlan
VHB/M. VanValken-bergAssoc.
@ $2million
Peak flowreduction &sedimentation
Created marsh,structuraltreatment, EDpond &infiltration basins
Flowattenuation,reducedsedimentation
, aesthetics,hatibat
Engelsby/Burlington
Center forWatershedProtection
Stantec $1.1million
Bacteria &phosphorous
Created marsh &ED pond
80% Premoval,beachreopened!
Farrell St./South Burl.
VHBPioneer
HTA/VHBPioneer
$1.85million
Sediment,peak flowreduction,streambank
ED pond,separators,streambankstabilization, newculvert,infiltration basin
Flowattenuation,streambank& channelstable
Bartlett/South Burl.
VHBPioneer
L & D $300K +landvalue
Bacteria, peakflow &phosphorous
Constructedwetland, stream& habitatrestoration
No E. coli,streammeets ClassB standard!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
WhyisthisnotlikeparkinglotBMPsorfloodcontrol?
Managing Wet Weather Flows with Green Infrastructure
Greeninfrastructureisafour-partapproachtowatersheds&landscapes.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
GreenInfrastructure:Makeitsafetogobackinthewater.
Managing Wet Weather Flows with Green Infrastructure
#1:HaveaPlan.Ifyoureonlyworkinginreactionmode,youllmissopportunitiesforwatershedintervention.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
#2: Beopentonewpartnerships. Lotsofem.What am I doing onthis boat with thesecrazy people?
Managing Wet Weather Flows with Green Infrastructure
#3:Improvisewithwhatyouhaveyoudontalwaysgetabiggerboat.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
#4: LearntoLoveLeftovers.
Managing Wet Weather Flows with Green Infrastructure
TheJawsPrinciplesinAction:
Plan!
Partnership!
Improvise!
LoveLeftovers!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
WellesleyCollegeWestCampusAlumnaeValleyLandscapeRenewal
Part of a multiphaserestoration of the WestCampus area
Significant interventionsin the drainage system,landscape & builtenvironment of Alumnae
Valley area Significant aesthetic and
environmental benefits!
Managing Wet Weather Flows with Green Infrastructure
1.Plan:
Courtesy Michael Van Valkenburgh Assoc.
Subwatershed: 25 acimpervious, closeddrainage system withinputs from five locations
Drainage routed underLake Waban; significantsedimentation problems
Historic development andgrading contributed to theproblems.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
2.Partnerships:Project Resources
Architect:Mack Scogin Merrill Elam
ArchitectsCivil Engineer:
Vanasse Hangen Brustlin,Inc. (VHB)
Geotechnical Engineer:Haley & Aldrich, Inc.
Soil Scientist:Pine & SwallowAssociates, Inc.
General Contractor:Richard White Sons, Inc.
Site Contractor:Maxymillian Technologies
Electrical Engineer:ARUP
Irrigation :Irrigation Management &
ServicesMeadow Consultant:
Prairie Restorations, Inc.Bamboo Consultant:
Susanne LucasLandscape Contractor:ValleyCrest Landscape
Development
Graphics and SignageConsultant:H Plus Inc.
Landscape Architect: Michael VanValkenburgh Associates
Managing Wet Weather Flows with Green Infrastructure
3.Improvise: UsepumpsANDbamboo!Projectincluded new36in. drainline,alteration ofinverts, newpump stationto recirculatesw andalleviate
floodingissues aswell asnaturallandscapefeatures
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
4.LearntoLove(Land)Leftovers.
173space parking lot removed for natural treatment and landscape area;spaces relocated to structured parking garage.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
ImpairedStreams+Beaches=Bad.
Managing Wet Weather Flows with Green Infrastructure
OHNO!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
GreenInfrastructuretotheRescue!
Managing Wet Weather Flows with Green Infrastructure
BartlettBrookStormwaterTreatmentSystem Plan: 1985 (!) and 2007 Watershed
Plans & Hydrologic Models, VHB Pioneer
Partnership: Champlain WaterDistrict, Shearer Chevrolet, Vtrans, VTRailway, City of South Burlington,Lamoureux & Dickinson ConsultingEngineers, Vermont Youth ConservationCorps, and 13 funding sources
Improvise: Interventions in USRoute 7 drainage system to treat firstflush from lower Shelburne Road +stream restoration
Leftovers: Railway setback & backlot of car dealership!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
Vermonts guinea pig project for
watershed intervention using a greeninfrastructure approach.
Highly complex & hydrologically stressedwatershed with extremely erodible soils
Managing Wet Weather Flows with Green Infrastructure
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
GreatOutcomes: Nutrient, bacteria andsediment removal (70% P)
No detectable petroleumhydrocarbons at outfall
Model for using VT YouthConservation Corps for SW projects
Restored stream channel meets Class B biocriteria Sold community & other partners on the benefits and potential
for success of complex green infrastructure retrofits
Managing Wet Weather Flows with Green Infrastructure
Vermont Agency of Transportation Enhancement Grant $112,600Champlain Water District $21,000City of South Burlington (cash) $5,000City of South Burlington (labor) $11,000Vermont Department of Envi. Conservation Section 319 & WatershedImprovement Grant $72,000Lake Champlain Basin Program $33,500National Fish and Wildlife Foundation EPA 5 Star $10,000Waterwheel Foundation $7,500Lintillhac Foundation $6,000
Bartlett Brook Supplementary Environmental Project $1,000Shearer Chevrolet Easement Donation $203,900Volunteer work and inkind services provided by Vermont Commons School ofSouth Burlington, and the Vermont Youth Conservation Corps.
ADMINISTRATIVE TIME FOR ALL GRANTS: DONT ASK.
HOW NOTTO FUND YOUR GREEN INFRASTRUCTURE PROJECT:
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
EnglesbyBrook: ShallowMarsh&Pond Plan: 1998 Englesby Brook
Restoration Plan by Center forWatershed Protection
Partnership: Stantec, City ofBurlington & ChamplainElementary
Improvise: Interventions inUS Route 7 drainage system
Leftovers: Behind the school
Managing Wet Weather Flows with Green Infrastructure
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
EnglesbyBrook: ShallowMarsh&Pond Cost: $1.1 million Funding: EPA STAG, City funds Water quality outcomes:
BEACH REOPENED IN 2007!
Recent USGS Monitoring Data
indicates 80% phosphorous removal
No stream channel data to date
Great educational resource for kids
Managing Wet Weather Flows with Green Infrastructure
PotashBrook: FarrellStreet Plan: 2001 Watershed Restoration Plan
by VHB Pioneer, funded by EPA Region 1
Partnership: City of SouthBurlington, Vtrans, VT Dept. of Buildings &General Services, Chittenden CorrectionalFacility, 4 commercial landowners, HoyleTanner & Associates, VHB Pioneer
Improvise: Detention Basin, Bio-infiltration basin, Hydrodynamic SwirlSeparator, Porous Asphalt, New Culvert
Leftovers: Land between the jailand the Interstate Highway
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
Fails justdownstream ofculvert/outfalls.
Meets Class Bbiocriteria here.
HAVE APLAN!
LAND
LEFTOVER!Learn to love
leftovers!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
New EDPond
Removeparking, installbioinfiltration
and bankstabilization
Replaceparking withporous
pavement
NewCulvert
Partnerships andImprovising
Managing Wet Weather Flows with Green Infrastructure
$1.85million,3yearsandsixnegotiatedparkingspaceslater First porous pavement installation
in VT HIGHLY successful
Stream channel & bank stabilized 140% of WQv provided by pond,
greatly reducing peak flow issues Success in convincing Vtrans,
BGS to allow use of landleftovers for green infrastructure.
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
MAJORKEYTOONGOINGSUCCESSINBOTHCOMMUNITIES:
UTILITY-BASEDFUNDINGBurlington, South Burlington both haveutility/feebased programs (SB since2004, BTV coming on line today)
Allows financing with revenueanticipation notes
Creates framework for longrangecapital budgeting and planning
ITS EASIER WITH A BIGGERBOAT!
Managing Wet Weather Flows with Green Infrastructure
But no matter howchallenging these projectscan be
you can be a partner ingreen infrastructuresuccess!
8/9/2019 Building Green Infrastructure in New England
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Managing Wet Weather Flows with Green Infrastructure
Contacts: WELLESLEY COLLEGE: Chris Lovett, VHB;
BARTLETT & FARRELL ST.: Juli Beth Hinds,VHB;[email protected]; Tom DiPietro, City ofSouth Burlington; [email protected]
ENGLESBY: Jack Myers, Stantec;[email protected] or Norm Baldwin, City of
Burlington; [email protected]
Managing Wet Weather Flows with Green Infrastructure
WatershedPlan
Design/ Eng.
Cost Key WQConcern
Techniques Used
KeyResult
WellesleyCollege
WestCampusPlan
VHB/M. VanValken-bergAssoc.
@ $2million
Peak flowreduction &sedimentation
Created marsh,structuraltreatment, EDpond &infiltration basins
Flowattenuation,reducedsedimentation
, aesthetics,hatibat
Engelsby/Burlington
Center forWatershedProtection
Stantec $1.1million
Bacteria &phosphorous
Created marsh &ED pond
80% Premoval,beachreopened!
Farrell St./South Burl.
VHBPioneer
HTA/VHBPioneer
$1.85million
Sediment,peak flowreduction,streambank
ED pond,separators,streambankstabilization, newculvert,infiltration basin
Flowattenuation,streambank& channelstable
Bartlett/South Burl.
VHBPioneer
L & D $300K +landvalue
Bacteria, peakflow &phosphorous
Constructedwetland, stream& habitatrestoration
No E. coli,streammeets ClassB standard!
