university of california santa cruz’s
TRANSCRIPT
University of California Santa Cruz’s
Water Efficiency and Management
Improvement Plan
Patrick Testoni, UCSC Energy Manager
Erin Linney, Alliance to Save Energy PowerSave Green Campus
•Campus Long Range Development Plan Settlement with City of
Santa Cruz: Strategic Water Master Plan
• 2007 UCSC Water Efficiency Survey (Maddaus Water Mgmt)
•City of Santa Cruz Water Shortage 2009
•Water Shortage Contingency Plan (City of SC)
•UCSC Water Shortage Plan
UCSC Water Conservation Recent
History
Measuring the Effectiveness of Water
Metering System
SEWER OUTFLOW
WATER INTO UCSC SYSTEM
IRRIGATION UNMETERED BUILDING WATER
UNMETERED IRRIGATION
SYSTEM LOSSES
CALCULATION ERRORS
Water Metering Upgrade Project
•78 irrigation submeters
•358 domestic water submeters
•No maintenance funding
•No maintenance program
•Accessibility issues
•Accuracy issues
Water Metering Upgrade Project
Meter Replacements
MXU (antenna) installations
Radio/Auto Read Hardware/Software
Water Metering Upgrade Project
• Created annual program
• Identified and prioritized meters
– Old meters with high usage
– Meters with access issues
– Meters with accuracy issues
– Unmetered irrigation point of connection
UCSC Water Efficiency Survey • Survey of water fixtures
– Toilets, urinals, showers, etc
• Audit of metering
– Utility vs. Campus subs
• Water usage breakdown
• Irrigation audit
• List of water efficiency measures
– Cost analysis
– Savings analysis
– Prioritized list
Grounds and Irrigation Efforts • Moratorium on hand watering by groundskeepers
• Manual implementation of Evapo Transpiration system values on standalone irrigation controllers
• Result: 22% reduction in irrigation
Rain Master Evapo Transpiration (ET) System
• Accurately measures wind, rain, temp, solar radiation, and humidity, and computes ET to .01 inch
• Recalculates weather changes every second
• Irrigation is closely matched to ET value
• Alarm and fault conditions
– Shuts off flow to controllers that alarm
UCSC 2009 Water Curtailment Plan
Performance
City of Santa Cruz Water Reduction Goals
• Water Conservation Training to the Dining staff
– Water Efficiency training
– Bilingual training video
o Thawing foods w/o running water
o Full dishwashing loads
o Report leak
PowerSave Green Campus
Dining Efforts
PowerSave Green Campus
Outreach Efforts •3-D map of where UCSC gets its water
•Stacks of gallon milk jugs to show water usage of a
toilet from 1980 vs. today
•Cook book showing how much water it takes to
make common dishes in the dining halls
•Posters with metrics and graphs of how much
water the average student at UCSC uses per day,
month, and year
•Fun facts about water and conservation tips
Obstacles encountered
•Water efficiency projects paybacks are high
•Water is relatively inexpensive compared to other utilities
•Behavioral changes are difficult to sell and more difficult to persist
Lessons Learned
•Involvement from multiple stakeholders and disciplines
•Coordination between students, city staff, and campus
departments
•Pilot test the different fixtures to ensure water savings and
reliability is crucial to the success of the new fixtures
•Work with occupants to resolve fixture issues and acceptability
problems
•Retrofits typically trigger ADA requirements
•Collaboration, collaboration, collaboration!!!
Online Resources City of Santa Cruz Water Shortage Contingency Plan
• http://www.cityofsantacruz.com/Modules/ShowDocument.aspx?documentid=3954
UC Santa Cruz Water Conservation Website
• http://www.ucsc.edu/conserving_water/
UC Santa Cruz Housing Water Conservation Website
• http://www.ucsc.edu/conserving_water/staff-students.html
UC Santa Cruz Water Shortage Plan 2009 Season
• http://www.ucsc.edu/conserving_water/2009_water-shortage-plan.pdf \
UC Santa Cruz Water Efficiency Survey
• http://ppc.ucsc.edu/cp/projects/9000-021/planning/WES.pdf
Contact Information
Patrick Testoni
Erin Linney