R 336.1843 RACT emission limitations for combustion turbines.

Rule 843. (1) As used in this rule, “emergency turbines” means turbines used in emergency situations to produce power for critical networks or equipment when electric power from the local utility is interrupted, to pump water in the case of fire or flood or required maintenance checks and readiness testing. (2) A person is subject to this rule and shall not cause or allow the emission of NOx from the combustion of fuels in turbines in excess of the requirements of this rule at facilities meeting either of the following criteria: (a) Located in the 2015 ozone nonattainment areas and either of the following: (i) A stationary source with a potential to emit of 100 tons per year or greater of NOx from all combined NOx sources upon the effective date of this rule. (ii) An emission unit installed after the effective date of this rule. (b) Has been subject to the requirements of this rule. The requirements in this rule, at a minimum, must permanently apply regardless of a change in the attainment or maintenance status of the stationary source location or the potential to emit of the stationary source. (3)If an exemption is utilized, all applicable requirements of R 336.1846 must be met. If the turbine is not utilizing an exemption listed below, all provisions of this rule apply. Turbines may utilize the following exemptions from all provisions of this rule except subrule (7)(d) of this rule: (a) Turbines subject to federal regulations under 40 CFR part 60, part 61, or part 63, or other federally enforceable conditions if the applicable regulations are included in the state implementation plan and have equivalent standards established to be equal to or more stringent than the requirements and limits of subrule (4) of this rule. (b) Turbines that are rated at less than 30 MMBtu/hr. (c) Emergency turbines. (4) Except as allowed by R 336.1845, a person that generates NOx emissions from the use of a turbine must meet the following: (a) The limits within table 843 by the effective date of this rule: TABLE 843 NOx emission limits by turbine and fuel type Turbine type and fuel Parts per million (volume, dry, corrected to 15% oxygen on an hourly basis) a Gaseous fuel fired Between 30 and 50 MMBtu/hr 50 MMBtu/hr and greater 150 25 Liquid fuel fired Between 30 and 50 MMBtu/hr 50 MMBtu/hr and greater 200 65 a Except for alternative averaging periods as allowed in subrule (6)(b) of this rule. (b) For emission units operating with a combination of gaseous and liquid fuels, a variable emission limit calculated as the concentration average of the applicable emission limits, as described in R 336.1842(4)(c) must be used. (5) A person subject to this rule shall demonstrate compliance by implementing and maintaining the following: (a) Create and implement an approvable maintenance plan for the turbine. (b) To the extent practicable, maintain and operate the turbine in a manner consistent with good air pollution control practice for minimizing emissions at all times including during startup, shutdown, and malfunction. The department shall determine compliance with this requirement based on information that may include, but is not limited to, monitoring results and review of operation and maintenance procedures and records. (6) For turbines subject to the emission rate limit specified in subrule (4) of this rule, compliance must be determined by using 1 of the following: (a) If a performance test has not been done within the last 18 months before the effective date of this rule, the person subject to this rule shall conduct an initial performance test, acceptable to the department, within 180 days after the effective date of this rule to demonstrate compliance with the required emission rate limit, or within 30 days after startup if the unit is not operating. A performance test must then be completed every 24 months, after the date of the last test, consistent with the requirements of R 336.2004. The 24-month frequency may be increased to once every 5 years when the most recent test results are 75% of the limit and the source certifies no other tests or information indicates a value over 75% of the limit. (b) An approvable plan must be submitted to the department describing how the NOx emissions will be monitored. The monitoring plan must include how the performance of periodic monitoring is sufficient to yield reliable data from relevant time periods representative of the source’s compliance with the emission rates specified in subrule (4) of this rule. Periodic monitoring must include 1 of the following: (i) A parametric monitoring program that specifies operating parameters, and their ranges, that provides reasonable assurance each turbine’s emissions are consistent with the requirements of this rule. (ii) A predictive emissions measurement system that relies on automated data collection from instruments. If a turbine is equipped with a predictive emission monitoring system, compliance with the applicable emissions limit must be determined based on the 30-day rolling average of the hourly arithmetic average emissions rates. (iii) A continuous emission monitoring system that complies with 40 CFR part 60 or part 75, both adopted by reference in R 336.1902. If a turbine is equipped with a continuous emission monitoring system, compliance with the applicable emissions limit must be determined based on the 30-day rolling average of the hourly arithmetic average emissions rates. (7) A person operating a turbine subject to this rule shall obtain current information and maintain records for all requirements and exemptions in sufficient detail to determine compliance. The information and records must be made available to the department upon request. The information and records may include the following: (a) Installation dates of the turbine. (b) The maintenance plan. (c) All associated maintenance records for a minimum of 5 years. (d) Either the results of the most recent stack test, or a minimum of 5 years of all monitoring data necessary to demonstrate compliance with limits and requirements in subrule (4) of this rule, or both, as applicable. (e) If the provisions of this rule are not applicable as allowed by subrule (3) of this rule, all information necessary to demonstrate that the equipment meets the exemption being utilized. (8) If records are not requested by the department for any 3-year rolling period, the facility will submit a report to the department with information and records in sufficient detail to determine compliance with the limits in this rule.