Integrated Water Management at a
Rapidly Growing, Drought Prone Campus
Sally Hoyt, Stormwater Engineer
Cindy Shea, Sustainability Director
The University of North Carolina at Chapel Hill
Smart and Sustainable Campuses Conference
April 16, 2013
Water Conservation
LOW FLOW FIXTURES
Showers
Faucet Aerators
Toilets
Lab Equipment
Stormwater and Development Boom
• Largest Expansion in
campus history
• Number of
stormwater control
measures on campus
rises from 12 to over
200
UNC-Chapel Hill Master Plan Campus
Ayers Saint Gross, Architects
Surface Parking to Mixed Use
• Rams Head: Dining Hall, Recreation Center,
Grocery Store, 3 Level Parking Deck, Intensive
Green Roof
• Bell Tower:
Genome Sciences,
Bell Tower Deck,
Central Park
Green Roofs
Global Education Center (L)
Carrington Hall (R)
Permeable Pavement
Estes Park & Ride (L)
NC Botanical garden (R)
2007 = Worst Drought in History
Exceptional Drought
Extreme Drought
Severe Drought
Non-Potable Water Uses at UNC
Cooling Towers
Landscape Irrigation
Toilet Flushing
Athletic Field Irrigation
Rainwater Harvesting
NC Botanical Garden (L)
Bell Tower Project (R)
Reclaimed Water
Seasonality & Peaks
Notes: Based on billing dates; includes UNC Hospitals
Non-Potable
Water
Program
Rooftop
Rainwater
Surface
Reclaimed
Water
Stormwater
Condensate
Non-Potable Water
FY14 Preliminary Rate - Non Potable Water
NPW Rate Comparison – Preliminary FY 2014 Effective Rates
$10.00
Water Rate ($/1000 gallons)
$9.00
$8.00
$7.00
$6.00
$5.00
$9.06
$4.00
$3.00
$5.36
$6.09
$7.10
$2.00
$1.00
$NPW
Potable for
Indoor Use
Potable for
Chillers (Avg)
Potable for
Irrigation
Lesson 1: Set-up Organizational
Structure During Design
NPW Responsibilities:
Energy Services
• System Planning
• Manage Operations and Repairs
• Utility Structure
EHS
• Permitting/Regulatory Compliance
• Staff Training
• Monthly Reporting and Record-Keeping
Plumbing and Electrical Shops
• Preventive Maintenance and Repairs
Lesson 2: Don’t rely on the regulations and
regulatory reviews.
Initial Construction
After Corrected
Lesson 3: Mind the Gap…
…Between the Civil Engineer and Plumbing Engineer.
Lesson 4: Develop a Cross-Connection
Control Program
PHYSICAL
• Labels
• Colors
• Different Pipe Materials
• Signs
TESTING
• Initial construction
• After renovation
TRAINING
• Staff
• Contractors
Azsustainability.com
Lesson 5: What kind of water?
Establish consistent terminology
Graywater?
We don’t have graywater!
Lessons:
Educate owner/designer/staff about non-potable water
Use correct terminology (in code, at site)
Lesson 6: Take advantage of the
opportunity to educate
Lesson 7: You can change the
plumbing code!
Lesson 8: Stormwater Quality as a
Program Driver
Lesson 9: Don’t ignore your pipes
Lesson 10 (State Schools): Run
your own NPDES MS4 Program
Pollution Detection and Elimination, Erosion Controls, Spill Response, Training
NPDES Stormwater Program
Street sweeping, mapping, storm drain cleaning and BMP maintenance, inspections
Stormwater Funding
• ADD IA MAP
Questions?
http://sustainability.unc.edu