Embed Size (px)
Citation preview
LOWERTOWN BALLPARK (CHS FIELD): A HOME RUN FOR STORMWATER REUSE
MN WATER RESOURCE CONFERENCE - 2015
Saint Paul’s CHS Field
• Public-private partnership
• Brownfield redevelopment
• Sustainability focused
• Rainwater harvesting across properties
PartnershipAgencies• Capitol Region WD• Metropolitan Council• Metro Transit
Project Team• St. Paul Saints• City of Saint Paul
Parks and Rec.• Ryan Companies
• Schadegg Mechanical• Solution Blue, Inc.• Rainwater Management Solutions
Site Context• Oldest part of city
(Historic Lowertown)• Previous
Gillette/Diamond Products site
• Industrial brownfield, 9 acres all impervious
• Destination site: near light rail line and Mississippi River
CHS Field
Ballpark Impact• 180 events each year
– 50+ Saints games– College partnership– Amateur baseball– Concerts– Community space– Rentable
conference– Reception space– Movie nights
• 400,000annual visitors
• 7,000 seats
Internet Cat Video Festival – Record 13,000 in attendance!
Greater Lowertown Master Plan • Reduce use of potable water• Use rain water and stormwater
as a resource – irrigation –within buildings
Stormwater Regulatory GoalsDesire to exceed minimum requirements
• Watershed District – Runoff rate– Volume reduction– Quality (TSS and TP)
• City of Saint Paul– Runoff rate – Sustainable stormwater overlay
• MN Sustainable Building Guidelines– Zero discharge for 1.25” event– Reduce TP– Reduce potable water consumption
State and Local BarriersStormwater Reuse
• Lack of standards• Multiple jurisdictions• No defined process• Operation and
maintenance oversight• Water economics
Stormwater Management“Double Play”
Operation & Maintenance Facility
• 4-acre facility for storing light rail trains
• Roof drained awayfrom CHS Field site
• Active train electrical grid near rain leaders
BMPs Include:
All BMPS remove >90% TSS
• 27,000 gallon rainwater harvesting cistern
• Tree trenches with Stockholm Soil
• Vegetated swale• Rain garden in
parking lot• Underground
filtration
Rainwater Harvesting
Rainwater Harvesting
Rainwater Harvesting
Cistern:• 27,000 Rainwater
Harvesting Cistern
• Geotextile preliner, flexible membrane main liner
• Smoothing inlet• Inlet, overflow,
vent, drain, and recirculation line
Treatment:• WISY vortex filter• 1 micron
absolute bag filters
• 4 UV disinfection lights (30 gpmeach)
The “Skid”
System Automation:
• Rainwater harvesting system connected to facility management system
• Ultrasonic sensors monitor tank level
• Flow meters for irrigation and toilet lines
• Valve automatically switches to municipal water when cistern is dry
Water Quality Goals
Water Quality Testing
BMPs Include:
All BMPS remove >90% TSS
• 27,000 gallon rainwater harvesting cistern
• Tree trenches with Stockholm Soil
• Vegetated swale• Rain garden in
parking lot• Underground
filtration
Tree Trenches
• 3 tree trenches with Stockholm soil mix
• Over 26,000 ft2 drainage area• Surface flow and subgrade
inputs• >90% annual TSS reduction
Swale and Rain Garden
Rain Garden• Located in east parking lot• Size: 1,700 ft2
• Drainage Area: 108,444 ft2
Bioswale• Located in the dog park• Size: 1,740 ft2
• Drainage Area: 18,344 ft2
Underground Filtration• 3 locations throughout
park• Treats field runoff and
significant impervious surface drainage
• Rock storage for retention/rate control
• Sand filter for WQ improvement (>90% TSS Reduction)
Costs of Enhanced Water Sustainability
• Total ballpark cost ……………………. $63,000,000• Total optional BMP costs*……………….$487,000
– Rainwater harvesting system ……….$300,000– Enhanced stormwater items …………. $ 68,000– Design and Admin/Fees ………………… $ 75,000– Miscellaneous.……………………………… $ 44,000
• Total grants ………………………………… $425,000 *Does not include cost to re-route OMF rain leaders
Rainwater Harvesting System
RHS Components RHS Controller Connect and Install
Cistern Room Overflow pipes Signage
Interpretive Signage
Interactive Kiosks
Art & Education
Art & Education
Other Sustainability Practices• 300 Solar Panels, one of
largest stadium arrays in nation
• Extensive recycling and composting = “Zero Waste” facility
• 95% of previous building recycled.
• 20% remains on-site as walls, floors, or crushed for field drainage system
Questions?
Design Build Challenges
• Fast pace project for new (slow) dialogue
• Lack of certainty, missed design packages
• Subcontractor team continuity
• High risk / low fee initiative
Design Build Challenges
Sample Title Slide for .ppt
• Important text gets bullet points in order of hierarchy and importance
• Second most important data goes beneath the most important stuff.
• Third thing down nobody reads• The last thing you say is probably what they
will remember most so make it good!
Presentation Title
Break out information can be laid out like this!
• This is darned important and could be supported by graphics or something of equally visual importance.
With Bullet points going hear and any secondary information that describes the stage to the right.
02468
101214
Series 3Series 2Series 1
Presentation Title
NameOrganization
Phone numberEmail address
Website
MWMO Stormwater Park and Learning Center
Presented by:Kurt Leuthold, PE, LEED AP, Principal
Barr Engineering Co, Minneapolis
The Transformation of an Urban Industrial Site
2015 Water Resources ConferenceOctober 13, 2015
Acknowledgments
Environmental Response Fund Grant
DEED Grant
Site Location
2522 Marshall Street NE
Site History 1939
Site History 1950
Site History 1960
Existing Site Conditions
Existing Site Conditions
Environmental Investigation
MWMO Mission
The Mission of the Mississippi Watershed Management Organization:
The MWMO’s mission is: to lead, and to foster stewardship of the watershed with actions that promote civic ownership and responsibility and through measures that achieve diverse and functional ecosystems.
Goals
• Pedestrian access to the river• Views of the river• Treat stormwater• Treat adjacent properties if possible• Reduce peak flow as much as possible• Stormwater demonstration• Stormwater experimentation• Education• Add greenspace• Public amenity• Create habitat
Schematic Designs
Site Overview
Site Overview
Phase 1 2011Phase 2 2014
5
Site Overview
Photo by MWMO
Site Overview
Photo by MWMO
Pedestrian Access and Views
Pedestrian Access and Views
Excavation Required for Access and Views
Lots of Excavation
Lots of Excavation
Pedestrian Access and Views
Environmental Cleanup Grants
Environmental Response Fund Grant$294,000
DEED Grant$371,000
Stormwater in Sequence
• Grass Swales• Cistern• Sunken Tree Grove and
Runnels• Large Bioretention Basin• Experimental Filter Basin• 2 More Bioretention Basins
Stormwater – Grass Swale
Stormwater – 4,000 Gal. Cistern
Stormwater - Cistern
Stormwater – Sunken Tree Grove and Runnels
Photo by MWMO
Stormwater – Large Bioretention Basin
Stormwater – Large Bioretention Basin
Photo by MWMO
Stormwater – Experimental Filter Basin
Photo by MWMO10
Stormwater Experimentation
Stormwater Experimentation
Stormwater Experimentation
Stormwater – Gravel Tree Nursery
Photo by MWMO
Stormwater - Gravel Tree Nursery
Photo by MWMO
Stormwater – Green Roof
Photo by MWMO
Stormwater – Cantilevered Scuppers and Permeable Pavers
Education - Floods
Education - Floods
Education - Signage
Education - Signage
Habitat
Habitat
Stormwater in Action
Photo by MWMO
Photo by MWMO
Photo by MWMO
15
Stormwater in Action
Photo by MWMO
Amenities
Amenities
Photo by MWMO
Challenges
Challenges
Challenges
Challenges
Challenges
Challenges
Public Art
Photo by MWMO
Neighborhood Transformation
Neighborhood Transformation
Lowry Bridge
Grand Opening
Questions
Site Overview
Minnesota Water Resources Conference
October 13, 2015
Stormwater Reuse in Urban SettingsCase Study: Minneapolis Edison High School
Photo Courtesy of Mississippi WMO
Agenda
1Project Background and Overview
2Supply vs. Demand
3Storage Sizing
4Regulatory Issues
MWMO• Who we are• Mission and
Goals• Visibility• Education• Monitoring
MWMO Offices
Edison HS
NE GREEN CAMPUS
EDISON PHASE I
EDISON PHASE II
Background/OverviewNortheast Green Campus• Site Improvements
• Modernized Football Field and Track• Community Plaza• Concessions/Bathroom Building• Additional Parking
1
Background/OverviewNortheast Green Campus• Green Elements
• Engineered Soil Amendments for Football Field
• Stormwater Reuse– Irrigation– Future use in Toilets/Urinals
• Stormwater Monitoring/Education• Community Gardens• Solar Canopy
1
EDISON PHASE II
Background/OverviewNortheast Green Campus• Project Partners
• Mississippi Watershed Management Organization
• Minneapolis Public Schools• Holland Neighborhood Improvement
Association• National Football League thru the Local
Initiatives Support Corporation
1
PROJECT SCHEMATIC
Supply vs. DemandNortheast Green Campus• Gray vs. Green
• 3:1 Rule of thumb• Supply
• Impervious Surfaces• Roofs• Sidewalks/Plazas• Parking Lots• Turf areas
• Demand• Irrigation
• Turf (1” per week)• Gardens
2
Impervious and Irrigation Areas
Storage SizingNortheast Green Campus• Design parameters
• Size of storm/Impervious Area?– Can store a X” rain event
• Irrigation Area/Duration w/o Supplement?– Can irrigate XX acres for XX days w/o
supplement• Reliability?
– Met Council Worksheet• Diminishing Returns
3
Common Questions on Storage:1. How much storage do we need?2. How often will we need to use potable water?3. Will we drain it in the winter?4. How deep does it need to be?
SOURCE Site DataImpervious Area 115,870 square feetImpervious Area 2.66 acres
USE Demand DataIrrigation Area 89,298 square feetIrrigation Area 2.05 acresIrrigation Rate 1 inches per weekIrrigation Rate 1 inches / week during hot season
Irrigation Season 13 39 week numberHot Irrigation Season 27 30 week number
Storage DataStorage Provided 200,000 gallons
Total Storage Required 674,407 gallons %Weeks that Flows Must be Augmented 234 weeks 28.0%
Weeks that Reuse System will Meet Demand 603 weeks 72.0%
Metropolitan Council Stormwater Reuse GuideWater Balance Tool - 31 year Precipitation Data
September, 2011Prepared by CDM
Regulatory IssuesRequirements for stormwater reuse systems in MinnesotaCurrently, the State of Minnesota does not have a state-specific code applicable to stormwater harvesting and reuse. The MPCA has developed guidelines for the use of reclaimed wastewater. In 2011, the Metropolitan Council developed the Stormwater Reuse Guide, which was developed based on review of water reuse programs and guidance from other states.
4
Regulatory IssuesCity of Minneapolis Requirements• Meet 2-, 10-, 100-year pre/post conditions
• Need to oversize storage?• Is the glass half full or half empty?
• Meet water quality requirements (70% TSS removal for a 1.25” rainfall)
• Is the underground storage the same as a NURP pond?
4
Regulatory IssuesPlumbing Code• Uniform Plumbing Code allows for use of stormwater in toilets, urinals, but leaves regulation up to local agency.
• Not currently allowed by State plumbing code.
• U of M and St. Paul Saints ballpark trials
4
Questions?
Stephanie Johnson, PhD, PE - Mississippi Watershed Management Organization
[email protected]@MississippiWMO
Dan Edgerton, PE - [email protected]
Mark Statz, PE - [email protected]@mstatzstantec
