Section 112.112 - Control Requirements(a) Production Units 1 and 2 together are prohibited from operating with only one furnace on-line and Production Unit 3 is prohibited from operating with only one furnace on-line. Affected sources in § 112.110 of this title (relating to Applicably) may not exceed the following pounds per hour (lb/hr) sulfur dioxide (SO2) limits based on the number of furnaces on-line in Production Units 1 and 2 and in Production Unit 3: Attached Graphic
(b) If during any block one-hour period the number of furnaces on-line changes, the emission limit must be determined by one of the following methods: (1) the fewest number of furnaces on-line in each production unit during any fraction of the hour; or(2) the time-weighted average of all limits applying during any fraction of the hour, calculated using the following equation: Attached Graphic
(c) The maximum emission rate of SO2 allowed under this section during any block one-hour period must be determined on a block one-hour average.(d) The emission cap identified in §112.112(a) of this section is the maximum emission limit that applies to the sum of the emissions from the Incinerator + HRSG (EPN 13A), Flare 4 (EPN Flare 4), Dryer Stack Units Nos. 1 & 2 (EPN 7A), and Dryer Stack Unit No. 1 (EPN 12A), and the subcap identified in §112.112(a) of this section is the maximum emission limit that applies to the sum of the emissions from Dryer Stack Units Nos. 1 & 2 (EPN 7A) and Dryer Stack Units No. 3 (EPN 12A).(e) Tail gas may only be combusted in sources whose emissions are routed to the Incinerator + HRSG (EPN 13A), Flare 4 (EPN Flare 4), Dryer Stack Units Nos. 1 & 2 (EPN 7A), and Dryer Stack Unit No. 1 (EPN 12A).(f) Simultaneous operation of the Incinerator + HRSG (EPN 13A) and Flare 4 (EPN FLARE 4) during any block one-hour period is prohibited.(g) Sulfur or sulfur containing compounds may not be routed to Flare 1 (EPN Flare-1), Flare 2 (EPN Flare-2), or Flare 3 (EPN Flare-3) on or after the compliance date in § 112.118 of this title (relating to Compliance Schedule).(h) After construction and commencement of operation, if authorized, Flare 4 (EPN FLARE 4) must have a stack height of 60.35 meters and must be located at Universal Transverse Mercator (UTM) coordinates UTM East Meters 273185 and UTM North Meters 3573987 in UTM Zone 14.(i) Incinerator + HRSG (EPN 13A) must have a stack height of 65.00 meters no later than the compliance date in § 112.118 of this title (relating to Compliance Schedules).(j) The owner or operator may request an alternate means of control under the provisions of § 112.102(i) of this title (relating to Control Requirements).30 Tex. Admin. Code § 112.112
Adopted by Texas Register, Volume 47, Number 42, October 21, 2022, TexReg 7044, eff. 10/27/2022