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