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Statement of Need: Section 307(d)(7)(B) of the CAA requires EPA to convene a proceeding for reconsideration of the rule if a person raising an objection to the rule can demonstrate to EPA that it was impracticable to raise such objection within the period for public comment or if the grounds for such objection arose after the period for public comment, and if such objection is of central relevance to the outcome of the rule.

Summary of the Legal Basis: Clean Air Act, section 112.

Alternatives: Not yet determined.

Anticipated Costs and Benefits: Cost and benefits numbers for the Boiler Area Source Rule (subpart JJJJJJ) are as follows. Proposal: Total annualized costs = $1.0 billion. Total net monetized benefits = $0.5 billion to $1.9 billion (3% discount rate), $0.4 billion to $1.7 billion (7% discount rate). Non-monetized Benefits = 39,000 tons of carbon monoxide, 130 tons of HCl, 5 tons of HF, 0.75 tons of mercury, 250 tons of other metals, 470 grams of dioxins/furans. Additionally, health effects from NO2 and SO2 exposure diminish, as well as ecosystem effects and visibility impairment. Final: Total annualized costs = $535 million. Total net monetized benefits = -$280 million to $30 million (3% discount rate), -$300 million to -$20 million (7% discount rate). Non-monetized Benefits = 1,100 tons of carbon monoxide, 340 tons of HCl, 8 tons of HF, 90 pounds of mercury, 320 tons of other metals, <1 gram of dioxins/furans (TEQ), health effects from SO2 exposure, ecosystem effects, visibility impairment.

Risks: Not yet determined.