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The trend toward use of heavier crudes increases the carbon footprint of petroleum products

Heavier crudes are, by definition, more viscous. The also contain greater amounts of sulfur, which must be removed because of the adverse impact of sulfur on various catalysts used in the refining process. The sulfur content of fuel is also controlled because of its impact on particulate generation....

NRDC challenge to EPA approval of California CAA SIP fails

California submitted a Clean Air Act State Implementation Plan to the EPA for approval. Pursuant to the "conformity rule" under 40 C.F.R. Section 93.118, the EPA conducted a review to determine whether the SIP's motor vehicle emissions budgets were adequate for transportation conformity...