Life Technologies – Carlsbad Site
Water Conservation Project 2009
Greg Waterbury
Environmental Sustainability Manager
June 2, 2009

Life Technologies – Carlsbad Site
Water Audit Water Usage and Savings Estimates
Water Audit Water Usage and SavingsSavings Estimates
Water Audit Water Usage and Estimates
Auditors: Kennedy & Jenks
Approximate Water Use
Process Water Use/ Area gal/yr acre-ft/yr Estimated water savings/yr
Autoclaves (3 units) 4,492,800 13.79 3,594,280
RO/DI Room 2,038,516 6.26 784,045
Cooling Towers 6,165,326 18.92 531,137*
Clean Steam Generators 2,365,200 7.26 1,892,160
Total Estimated Savings 15,061,842 46.22 6,801,622
*Central plant Energy Conservation Measures project improvements - estimated water savings likely to be higher:
• 2.0 MM gallons Cooling Tower
• 1.5 MM gallons Central plant and VAV
• 3.5 MM gallons Total
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Water Conservation Projects
Phase 1
- Autoclave water conservation: kit/trap cooling modification. Limits the amount of
water used for trap cooling to as use basis as opposed to continual flow.
Trap cooling water Baseline monitoring
- RO/DI purified water system piping reconfiguration to increase efficiency of RO
system
RO pump - water rejection RO/DI water system train (1 of 2)
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Water Conservation Projects
Phase 2
- Central Plant Energy Conservation Measures
$1MM central plant capital project
estimated water savings = 3.5MM gallons annually
estimated electrical savings = 3.2MM kWh annually
estimated cost savings = $482,000 annually (ROI 1.9 yr)
Phase 3
- Irrigation capital project proposal - swap out nozzles and controller
Estimated Savings for Total Site Conversion (Pleasanton)
Approximate turf area irrigated with spray heads on Site = 82,000 Square Feet
Gallons of water saved from conversion = 1,730,385 gallons per year
Estimated Savings for Conversion of the Site = $5,781.00
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