ERROR 1
ERROR 1
ERROR 2
ERROR 2
ERROR 2
ERROR 2
ERROR 2
Password and Confirm password must match.
If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)
ERROR 2
ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.
EPA has rejected a request by industry groups and several states to reconsider the more stringent air-quality standard it issued last year for sulfur dioxide. In a notice published in the Federal Register on Jan. 26, EPA said the petitions failed to demonstrate that the new one-hour standard of 75 ppb is based on faulty research data. “EPA’s analysis of the petitions reveals that the petitions have provided inadequate and generally irrelevant arguments and evidence that the underlying information supporting the final revised SO2 [standard] is flawed, misinterpreted, or inappropriately applied by EPA,” the agency said. EPA published the final one-hour air-quality standard for SO2 last June, replacing a standard based on an annual average. EPA said the revised measure would better protect public health. When the new standard took effect in August, the American Chemistry Council and other industry groups joined Texas and the Dakotas in filing petitions challenging it.
Join the conversation
Contact the reporter
Submit a Letter to the Editor for publication
Engage with us on Twitter