Missouri Code of State Regulations › Title 10 - DEPARTMENT OF NATURAL RESOURCES › Division 10 - Air Conservation Commission › Chapter 6 - Air Quality Standards, Definitions, Sampling and Reference Methods and Air Pollution Control Regulations for the Entire State of Missouri › Section 10 CSR 10-6.261 - Control of Sulfur Dioxide Emissions

Current through Register Vol. 49, No. 14, July 15, 2024
PURPOSE: This proposed rulemaking will remove all
				  sources from the current Table I because the sulfur dioxide
				  (SO2) emission limits are included in other legally
				  binding documents (e.g., Construction Permits, Consent Agreements, etc.) and/or
				  emission limits are no longer necessary to comply with the 2010 1-hour
				  SO2 National Ambient Air Quality Standard (NAAQS). As a
				  result, the current Table I will be removed in its entirety, and Table II will
				  now be the new Table I. This proposed rulemaking will also add City Utilities
				  of Springfield - James River Plant, to the new Table I list of affected
				  SO2 sources in the rule, codifying units #1 through #5
				  are using natural gas exclusively. An exemption will be added to subsection
				  (1)(A) for units burning ultra low sulfur distillate fuel with a maximum fuel
				  content of fifteen (15) parts per million (ppm). Subsection (3)(D) requiring
				  sources in Jackson and Jefferson counties to use ultra-low sulfur distillate
				  fuel oil will be eliminated since it is not required by a federally approved
				  plan for nonattainment areas. The new Table I will be updated to more clearly
				  state that only indirect heating units are subject to the table emission
				  limits. The table in subsection (3)(C) will be replaced with a new table that
				  specifies state areas and specific dates to clarify the terms "existing" and
				  "new" in the old table, adding clarity by providing the necessary information
				  in the table. Additionally, subsection (5)(A) will be revised to reference
				  10 CSR
				  10-6.030, offering a single location to determine
				  applicable test methods. The evidence supporting the need for this proposed
				  rulemaking, per 536.016, RSMo, is Executive Order 17-03 Red Tape Reduction
				  Review and related comments.
PURPOSE: This rule establishes requirements for
				  emission units emitting sulfur dioxide (SO2). These
				  requirements maintain existing SO2 regulatory
				  requirements previously found in
				  10 CSR
				  10-6.260 that were in place prior to the establishment
				  of the June 22, 2010, one (1)-hour SO2 National Ambient
				  Air Quality Standards (NAAQS). The rule consolidates, streamlines, and updates
				  existing regulatory requirements in accordance with 536.175,
				  RSMo.
(1) Applicability. This
				rule applies to any source that emits sulfur dioxide
				(SO2). The following exceptions apply to any source not
				listed in Table I of this rule. Upon request of the director, owners or
				operators must furnish the director information to confirm that an exception
				criterion is met.
(A) Individual units fueled
				exclusively with natural gas (as defined in
				40
				CFR 72.2 ), liquefied petroleum gas as
				defined by American Society for Testing and Materials (ASTM) International,
				ultra-low sulfur distillate fuel oil with a maximum fuel sulfur content of
				fifteen (15) ppm, or any combination of these fuels as of December 31, 2016,
				and this exception is determined by complying with the record keeping
				requirements in section (4) of this rule;
(B) Individual indirect heating units with a
				rated capacity less than or equal to three hundred fifty thousand British
				thermal units (350,000 Btus) per hour actual heat input; or
(C) Individual units subject to a more
				restrictive SO2 emission limit or more restrictive fuel
				sulfur content limit under -
1.
											10 CSR 10-6.070;
				or
2. Any federally enforceable
				permit.