Concrete Products

DEC 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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Page 13 of 83

12 • December 2018 GOVERNMENT AFFAIRS REGULATIONS POUR IT BOTH WAYS. HAVE IT YOUR WAY. Choose a FRONT OR REAR MIXVEYOR. Its amazing reach (up to 52 ft.) and fl exibility let you deliver everywhere, anywhere you want. 1 888 799 4422 Although geared to off-highway machines, the new Caterpillar C13 engine exhibits sim- ilar methodology to the Volvo One-Box (page 10): It utilizes SCR and diesel oxidation catalyst, plus a DPF; attains EPA Tier 4 emissions thresholds without the need for exhaust gas recirculation; and, is equipped with NOx sensors to reduce interface connections. "The Initiative will help modernize heavy-duty truck engines, improving efficiency and providing cleaner air for all Americans," said Acting EPA Admin- istrator Andrew Wheeler, who unveiled the CTI in an early-November gathering with the American Trucking Associations, equipment manufacturers and industry stakeholders. "The U.S. has made major reductions in NOx emissions, but it's been nearly 20 years since EPA updated these standards. Through rulemaking and a comprehensive review of existing requirements, we will capitalize on these gains and incentivize new technologies to ensure heavy-duty trucks are clean and remain a competitive method of transportation." "[CTI] makes clear that reducing NOx emissions from heavy-duty vehicles is a clean air priority for this administration," added EPA Office of Air and Radiation Assistant Administrator Bill Wehrum. NOx emissions dropped by more than 40 percent from 2007 to 2017, owing partly to the advent of SCR exhaust aftertreatment on heavy-duty trucks. But there is more work to be done, contends EPA, citing estimates that such vehicles will be responsible for one-third of the transportation sector 's NOx emis- sions in 2025. The agency expects that any update to the standards will result in significant mobile source NOx reductions, assisting communities across the country in ozone and particulate matter standards attainment.

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