Integrated Water Management at a Rapidly Growing, Drought Prone Campus
Sally Hoyt, Stormwater EngineerCindy Shea, Sustainability Director
The University of North Carolina at Chapel Hill
Smart and Sustainable Campuses ConferenceApril 16, 2013
Water Conservation
ShowersFaucet AeratorsToilets
LOW FLOW FIXTURES
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 DroughtExtreme DroughtSevere Drought
Non-Potable Water Uses at UNC
Athletic Field IrrigationToilet Flushing
Landscape IrrigationCooling Towers
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
Non-Potable Water
Condensate
Reclaimed Water
SurfaceStormwater
Rooftop Rainwater
FY14 Preliminary Rate - Non Potable Water
NPW
Potable for In
door Use
Potable for C
hillers
(Avg)
Potable for Ir
rigation
$- $1.00 $2.00 $3.00 $4.00 $5.00 $6.00 $7.00 $8.00 $9.00
$10.00
$5.36 $6.09 $7.10 $9.06
NPW Rate Comparison – Preliminary FY 2014 Effective Rates
Wat
er R
ate
($/1
000
gallo
ns)
Lesson 1: Set-up Organizational Structure During Design
• System Planning• Manage Operations and Repairs• Utility Structure
Energy Services
• Permitting/Regulatory Compliance• Staff Training• Monthly Reporting and Record-Keeping
EHS
• Preventive Maintenance and Repairs
Plumbing and Electrical Shops
NPW Responsibilities:
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
TRAINING• Staff• Contractors
PHYSICAL• Labels• Colors• Different Pipe Materials• Signs
TESTING• Initial construction• After renovation
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
