2006, Volume 40, Pages 5108-5115 Jane Bare,* Thomas Gloria, and Gregory Norris: Development of the Method and U.S. Normalization Database for Life Cycle Impact Assessment and Sustainability Metrics Page 5113. The last three paragraphs of the fossil fuel depletion section should be replaced with the following two paragraphs: “The annual consumption estimates for coal, natural gas, and oil were obtained from the U.S. Department of Energy’s (DOE’s) Energy Information Administration (EIA) State Energy Data Report (33). The report includes US annual estimates for coal, natural gas, oil, nuclear, hydroelectric, and waste (waste energy). The latest report estimates energy consumption for the year 1999. The results may be found in the Supporting Information. The total U.S. normalized value for fossil fuel depletion was 1.03 × 10+13 MJ surplus/yr and 3.7 × 10+4 MJ per yr per capita.” Also, the fossil fuel depletion normalized values should be changed in Tables 3 and 4. Finally, as mentioned in the paper, this is a first attempt to publish a United States normalization database. Readers
TABLE 3. Summary of Normalized Values for TRACI Impact Categories for 1999 impact category
normalized value air
normalized value water
total normalized value
NA
NA
1.03 × 10+13
fossil fuel depletion
normalized unit surplus MJ/yr
TABLE 4. Summary of Normalized Values for TRACI Impact Categories for 1999 on a Per Capita Basis normalized normalized total value value normalized air water value impact category per capita per capita per capita fossil fuel depletion
NA
NA
normalized unit per capita
3.7 × 10+4 surplus MJ of energy/yr/ capita
are encouraged to contact the corresponding author at
[email protected] for further information and updates. ES078004S
10.1021/es078004s CCC: $37.00 Published on Web 04/27/2007
2007 American Chemical Society
VOL. 41, NO. 11, 2007 / ENVIRONMENTAL SCIENCE & TECHNOLOGY
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