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TRANSCRIPT
Presented by:
Wes Saunders Pearce (City of St. Paul)
Dave Stark (Stark Rainwater Harvesting)
GreenStep Cities
January 21, 2015
OMF
CHS Field
Local Drivers
Sustainable Stormwater
Area Plan
Opportunity
•Audience
•Destination
Rules
•State B3
•CRWD
•City
Greater Lowertown Master Plan
Reduce use of potable water Use rain water and stormwater
as a resource irrigation within buildings
Challenges Lack of adopted
standards
Multiple jurisdictions
No defined process
Limited agency capacity
Duties; authority
Operation and maintenance oversight
Water economics
State Rules and Agencies MN Rule Chapter 4715 MN Rule Chapter 4720
Plumbing Code
Department of Labor and Industry (DLI)
Public Water Supplies
Department of Health
Code Considerations Plumbing Code
Silent on rainwater harvesting
Allows for Alternative Methods review
Provisions for First Class cities
Public Water Supply
Treatment
Review
Partnership Agencies • 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
www.rainwatermanagement.com • Stark Rainwater Harvesting
Sp. Grant App
Sp. Grant Award
MetCo Scoping
OMF Tour
Design Charrette
MetCo Env Com.
Schem Design & Cost
MEP Hired
Conf Call
MetCo Letter
MetCo coord mtg
Sp. Grant amend
U of M Tour
Conf Call
MetCo coord mtg
City Gap Funding
DSI-SPRWS Coord
Lowertown Future Fund App
Conf Call
Design Charrette
CRWD Bd Mtg
Final Design Review
Final Plans
Vetting Meeting
Addendum 1
O&M Coord.
7/15
/13
8/1
5/13
9/1
5/13
10/1
5/13
11/1
5/13
12/1
5/13
1/15
/14
2/15
/14
3/15
/14
4/1
5/14
5/15
/14
6/1
5/14
Lowertown Ballpark Rainwater Harvesting
2013-14 Milestones
Design Charrette Facilitated by Rainwater
Management Solutions and Local Representative Stark Rainwater Harvesting
City of Saint Paul Dept of Safety and Insp.
Dept of Parks and Rec.
CRWD
MCES
Ryan Cos.
Solution Blue
Schematic design and prelim cost estimates
Is Indoor Use Allowed? Great River Energy - Maple Grove (2008)
17th Avenue Dormitory - University of MN (2013)
Lowertown Regional Ballpark (2015)
Utilized draft Chapter 17 of UPC (amended)
Incorporated treatment standards from NSF/ANSI 350
Indoor Use Examples Great River Energy (2008)
Maple Grove, MN
20,000 gall cistern
Platinum LEED-NC (first in MN)
University of MN (2013)
17th Avenue Hall
35,000 gall cistern
RAINWATER HARVESTING – NOT GREYWATER REUSE
Design Refinement: U of M tour
April 2014 Final Mechanical Design Final System Schematic OMF/Cistern connection
Final Design Rainwater use – toilet flushing & ballfield irrigation
27,000 gallon tank 10% of toilet fixtures; 15-20% of field demand
Vetting and Coordination State, local reviewers;
funding partners; project team
Facilitate transparency
Receive comments, perspective, or technical input
Water Benefits - Annual 27,000 gallon tank; 0.75-acre roof area
450,000 gallons domestic water saved
16% potable water use reduction annually
Roughly equal to 7 single family residential properties
Enhanced Site Sustainability Total cost …………………………………….. $487,000
Rainwater harvesting system …… $ 300,000
Enhanced stormwater items ………….. $ 68,000
Design and Admin/Fees ……………….. $ 75,000
Contingency ….……………………………… $ 44,000
Total grants ……………… ………………… $425,000
Project commitment …….………………. $ 62,000
Ballpark Installation
WISY Prefilter Installation
Pre-assembled Pump and Treatment Skid
Ballpark Controls Package • BACNET Compatible • Low Level Pump Protection • Pump and VFD Status • Domestic Use vs Rain Use • UV Status • Level Sensors • Switch to Toilets Only • Capabilities to Add or
Change
Where Code Issues Occur • Interdisciplinary – Stormwater, Health, Plumbing • Jurisdiction for indoor use is plumbing code. • No code = Alternate Materials and Method Request. • Plans should be submitted by Mechanical Engineer. • Treatment for Graywater, Reclaimed Water and
Rainwater • Municipal Intertie – Solutions (Air Gap, RPZ, Separate
Lines) • Potable vs. Non-Potable Standards • Maintenance and Operations Plans
http://www.plumbingengineer.com/march_07/rainwater.php
If No Code and Indoor Use – (AMMR)
American Rainwater Catchment System Association (ARCSA)
The Mission of ARCSA is to promote sustainable rainwater harvesting practices to help solve potable, non-potable, stormwater and energy challenges throughout the world.
www.arcsa-usa.org
• Workshops and Accreditation Program
• National Conference
• Stark is Regional Representative
• New National Manual
• Rainwater Harvesting Guidelines
• MOU’s – ICC, UPC, IAPMO, NSF and CanARM
ARCSA/ASPE Standard 63
First Step – Determine Jurisdiction State vs. National Codes
http://www.deltafaucet.com/tools-resources/selecting-products/plumbing-codes/index.html
Minnesota – DLI Request for Action on Codes
http://www.doli.state.mn.us/PDF/pb/RFA.xls
Local Education is Key
Strategies Moving Forward Education - Plumbers, engineers, landscape architects, architects
Workshops - U of M, ARCSA, Industry and Code Officials
Collaboration - Design charrettes, LBC teams, Stormwater
Partner – Suppliers, mechanical/civil engineers, plumbers, landscape architects, irrigation professionals
Examples – Provide system examples in similar climates and show working examples of your products and projects
Tours –Emphasize Rainwater Harvesting as a Stormwater BMP
Develop MN Specific RWH Guidelines and Specifications
Continue work on MIDS and sizing systems
Task Force – Include ARCSA and Industry Partners
Database – Building databases of water quality to provide “proof it can be done”
Thank You. Questions?
GreenStep Cities January 21, 2015
Wes Saunders Pearce (City of St. Paul) Dave Stark (Stark Rainwater Harvesting)