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altfuels -- Draft Lower NOx Heavy-Duty Diesel Engines and Low Emission Natural Gas and Other Alternative Fuel Heavy-Duty Engines Technology Assessment
Posted: 30 Sep 2015 08:54:12
The California Air Resources Board (ARB/Board) announces the release of two draft documents: “Technology Assessment: Lower NOx Heavy-Duty Diesel Engines” and “Technology Assessment: Low Emission Natural Gas and Other Alternative Fuel Heavy-Duty Engines”. The draft technology assessments apply to Class 2b through Class 8 heavy-duty vehicles (gross vehicle weight of 8,501 pounds and up). They present comprehensive assessments of the current state and projected technology development necessary to further reduce oxides of nitrogen (NOx) emissions from on-road heavy-duty diesel and natural gas engines over the next 5 to 15 years, and staff's proposed next steps to support commercialization of these technologies. Sources of information used in the draft assessment included an extensive list of published reports, research papers, and documented conversations with technology experts. The draft technology assessment can be viewed and downloaded from the ARB’s technology and fuels assessment webpage at: http://www.arb.ca.gov/msprog/tech/tech.htm. We encourage interested parties to submit comments on the draft technology assessments through the technology and fuels assessment web page for public comments at: http://www.arb.ca.gov/msprog/tech/techreport/comments.htm. We prefer to receive comments within 30 days of the posting of these draft assessments, if possible. If you have questions regarding the draft technology assessment, please contact the following: Mr. Daniel Hawelti, Air Resources Engineer, at 626-450-6149, or at Daniel.Hawelti@arb.ca.gov Background: California has made substantial progress in reducing emissions from mobile sources, but further reductions are needed to meet California’s air quality and climate goals. These goals include: •Meeting 2023 and 2032 ambient ozone air quality standards, which staff estimates will require a 90 percent reduction in NOx emissions below the 2010 baseline emission inventory in the South Coast air basin, with substantial reductions needed in the San Joaquin Valley and other non-attainment areas of the state as well; •Meeting the newly proposed federal ozone standard, which staff estimates will be even more challenging to attain than the 2032 standard; •Reduce greenhouse gas (GHG) emissions to 1990 levels by 2020; •Achieve a 40 percent reduction in GHG emissions from 1990 levels by 2030; •Achieving an 80 percent reduction in GHG emissions from 1990 levels by 2050; •Reduce petroleum use in cars and trucks by up to 50 percent by 2030; and •Produce at least 50 percent of electricity from renewable sources by 2030. To meet these goals, a long-term transformation of the mobile source fleet into one utilizing zero and near-zero emission technologies is needed. Heavy-duty vehicles greater than 8,500 pounds emit about a fifth of the total GHG emissions associated with transportation sources in the State, which is about eight percent of the statewide total. In addition, these vehicles account for 33% of NOx emissions from all statewide sources. Because trucking emissions are such a significant source of GHG and criteria pollutant emissions, achieving reductions within the trucking sector is a key component in the strategy to meet California’s climate and air quality goals. The technology assessments were prepared by staff from ARB, along with the South Coast Air Quality Management District (SCAQMD) staff. They were discussed at workshops in September 2014 and at the December 2014 ARB board meeting. More information on the assessments is available at ARB’s website at http://www.arb.ca.gov/msprog/tech/tech.htm. An overview of the technology assessments was released in April 2014 and is available on ARB’s website at http://www.arb.ca.gov/msprog/tech/report.htm. California is in a drought emergency. Visit www.SaveOurH2O.org for water conservation tips.