California has always been a leader in health and environmental initiatives; it was the first state to have a statewide smoking ban, and it has one of the strictest air pollution requirements in the U.S. after Assembly Bill 32 was passed in 2006. This mode of thinking has also carried over into the construction industry as well. The City of San Francisco is now contemplating requiring the carbon footprint be calculated for any new public building being built. In order for the concrete industry to calculate our carbon footprint, we need an easy to use tool that can be used accurately and reliably. Currently there are several international and domestic groups working on developing standards that concrete producers can use to develop the necessary tools that will be needed in the future. This presentation will highlight one such standard being developed by the Carbon Leadership Forum from the University of Washington and show how this standard is being used by a producer in the Bay Area to accurately report their carbon footprint.

1. Meeting Today‟s Sustainability
Challenges: Carbon
Footprinting and More…
Ryan Henkensiefken
USC Technologies
National Research Laboratory of U.S. Concrete

2. Agenda
 Sustainable Development Today
 California‟s Leadership
 The Rise of City Standards
 The Dilemma: How do you know if the
standards are being met?
 The Need for Effective Measurement,
Comparison and Certification
 A Closer Look
 Carbon Calculator
 EPD Initiative
 Meeting the Challenge
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3. Sustainable Development Today
 Sustainable construction is not a
passing fad
 Membership in the U.S. Green
Building Council has increased
from fewer than 100 to over
18,000 in the past decade
 Over 155,000 building
professionals are LEED certified
 Demand for “green building
materials” is forecasted to grow
at an accelerated rate
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4. LEED Certified Structures
Source: US Green Building Council
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5. Demand for Sustainable Construction Materials
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6. California‟s Leadership
The Governor's Green Building Action
Plan B-18-12
 Highlights:
 “State agencies, departments … reduce “California
entity-wide GHG emissions by at least
10% by 2015 and 20% by 2020…” companies have
 “All new State buildings and major always been trail
renovations beginning design after 2025
shall be constructed as Zero Net Energy”
blazers”
Dan Geiger
 New & major renovated State buildings USGBC-NCC
and build-to-suit leases larger than
10,000 square feet shall obtain LEED
„silver‟ certification or higher …”
California
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7. The Rise of City Standards
Sample Standards
 Buildings have performance equivalent to an Energy
Star rating of at least 60-75
 New residential & commercial construction to exceed
Title 24 energy efficiency standards
 Adopt and implement local green building ordinance of
program setting minimum standards
 Provide incentives to private developments to meet or
exceed specified standards under Build It Green,
LEED, or similar
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8. San Francisco – A Closer Look
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9. San Francisco – A Closer Look
Source: Rich Chien, IFMA Presentation April 14, 2011
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10. San Francisco – A Closer Look
Source: Rich Chien, IFMA Presentation April 14, 2011
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11. San Francisco – A Closer Look
 Leading by Example and Achieving
Results
 Named World‟s Greenest City by
World Green Building Council
 GHG emissions nearly 12% below
1990 levels
Laguna Honda Hospital, the first
 Has surpassed international and hospital in CA to achieve LEED Silver
statewide emissions target
 Example: CA requires 50%
construction debris be diverted from
landfill (recycle/reduce); SF requires
75%
 Recently established target: reduce
carbon emissions to 20% below 1990
levels by year end, by 80% by 2020 The iconic Transamerica building was the first
building to comply with SF‟s renovation standards
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12. The Need for Effective Measurement,
Comparison and Certification
Lifecycle Assessment
Measurement, Comparison and
Certification Tools:
 Deliver insight and certainty
LCA
 Analyze key characteristics: carbon, water, costs
and waste
 Measure & report alignment with standards =>
Carbon Disclosure Project (CDP), Global
Reporting Initiatives (GRI), GHG Protocols,
Architecture 2030, California standards...
 Critical foundation for creating Environmental
Carbon Accounting Tool Product Declarations (EPDs)
 Data delivers LEED process clarity
 Provide reliable tools for effective decision making
 Yields real environmental performance measures
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13. A Closer Look: Carbon Calculator
The executive dashboard from Climate Earth allows Central Concrete to track the key sustainability metrics
that we established up front – GHG and water – both critically strategic to our long-term success.
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14. Example: Measuring Enterprise, Supply Chain
and 18,000 Product Mix Combinations
Raw Material Supply- Upstream Process
NATURAL CRUSHED
CEMENT SCM WATER ADD-MIXTURES
AGGREGATE AGGREGATE
Quarry Quarry Material Input Waste Input Varies Waste Input
Sort Crush Crush/grind Material Input
One
Sort Clinker production Process Material Input Cubic
handling Handle
grinding Processing Yard
packaging
+
Transportation
Concrete Production: Core Processes
Purchased Site Generated Natural
Diesel Batch Water
Electricity Renewable Gas
Purchased
Site Generated Bio
Electricity Fuel Oil Wash Water
Based Electricity
Green Grid
Transportation to Construction Site
LEGEND
Use Phase Included
End of Life Excluded
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15. Example: Selecting Optimal Products for Your
Customer
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16. Example: Superior Information for the Customer
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17. Example: Develop and Document Higher
Performing Products
Data provides evidence that U.S. Concrete’s low-CO2 mixes
offer superior strength over traditional concrete
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18. Carbon Footprint (pounds/cubic yard)
Easily understood data provides impactful information on GHG impact
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19. Environmental Product Declarations (EPD)
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20. Why EPDs?
Allows for Comparisons  Why Bother?
 Building owners asking for EPDs
=> Must report your carbon footprint
 Required by Architecture 2030
=> Building Challenge
 LEED 2012
Helps Prevent => New credits for EPDs
=> New credits for LCA
 Product Category Rules (PCPRs) are
being developed
=> They will set the protocols for
reporting and validating the
environmental impacts in the EPD
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21. Meeting The Challenge
Establish Adopt and make Use Initiatives to:
Sustainability informed decisions  Improve effectiveness
via new tools and  Establish completive
Initiatives methodology  Respond to shifting
demands
 Reduce costs
 Increase revenue
 Manage risk
LCA
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22. Thank you
Ryan Henkensiefken
USC Technologies
National Research Laboratory of U.S. Concrete