52.276—Sulfur content of fuels.
(a)
The following rules or portions of rules are disapproved since they represent a relaxation of previously submitted regulations and an adequate control strategy demonstration has not been submitted showing that the relaxation will not interfere with the attainment and maintenance of the National Ambient Air Quality Standards:
(b)
The deletion of the following rules from the State implementation plan is disapproved since their deletion represents a relaxation of the control strategy, and an adequate demonstration showing that the relaxation will not interfere with the attainment and maintenance of the national ambient air quality standards has not been submitted:
(A)
Rule 126, Sulfur Contents of Fuels, submitted on June 30, 1972 and previously approved under 40 CFR 52.223.