Section Env-A 1314.06 - Seasonal Control of NOx Emissions(a) A stationary source that is subject to this chapter may use seasonal emission control techniques in order to comply with NOx RACT, as specified in (b) through (f), below.(b) Any stationary source using post-combustion NOx air pollution control equipment to comply with NOx RACT during the ozone season shall continue to operate said equipment during the remainder of the calendar year.(c) The allowable annual NOx mass emission rate, in tons per year, shall be less than or equal to the annual NOx mass emission rate that would be calculated by multiplying the actual annual production rate, for example Btu per year, by the applicable emission limit, for example lbs. NOx per million Btu, as specified in Env-A 1303 through Env-A 1312 for all emissions units and fuels in use prior to December 31, 1990.(d) Annual NOx emissions limits shall be based on the lower of the actual or allowable NOx emissions for calendar year 1990, unless NOx emissions and operational data submitted by the owner or operator, and approved by the department in accordance with (e), below, demonstrate that NOx emissions from the source for calendar year 1990 are not representative of normal operations. In no case shall NOx emissions data for years prior to calendar year 1989 be used to represent normal operations for the purpose of emissions averaging.(e) The department shall use EPA-approved methods and procedures as specified in 40 CFR § 51.165 for determining whether the NOx and operational data submitted by the owner or operator is adequate to demonstrate that NOx emissions for calendar year 1990 are not representative of normal operations.(f) Emissions averaging to meet NOx RACT requirements on a seasonal basis shall be allowable in accordance with the following requirements: (1) A 24-hour calendar day average NOx mass emission limit shall be established for the ozone season based on the applicable limit specified in Env-A 1303 through Env-A 1312 for all emissions units and fuels in use prior to December 31, 1992;(2) A 24-hour calendar day average NOx mass emission limit shall be established for the remainder of the year based on the uncontrolled emission rate of the emissions unit determined by CEM data or stack test data;(3) An allowable average annual NOx mass emission limit shall be established in accordance with (c), above;(4) The sum of the NOx mass emissions during the ozone season and the NOx mass emissions during the remainder of the calendar year shall be less than or equal to the lesser of the annual NOx mass emissions that would have been allowed under Env-A 1303 through Env-A 1312 or the annual NOx mass emissions otherwise allowed under Env-A 611, Env-A 618, Env-A 619, Env-A 1313, Env-A 1314.03, Env-A 1314.04, Env-A 2900 through Env-A 3300, Env-A 3500, Env-A 3700, and Env-A 4300;(5) Emissions from replacement power sources shall be calculated by multiplying the actual production rate for the device, for example Btu per hour, by the allowable NOx mass emission rate for the device, for example lb. NOx per million Btu;(6) For multiple sources under common ownership using the bubble specified in Env-A 1314.04, the applicable emission limit for each unit of production referred to in the formula in Env-A 1314.05 shall be established in accordance with the applicable provisions of this part; and(7) All stationary sources using seasonal controls shall: a.Install CEMs to the extent required by Env-A 1314.02 and Env-A 800;b.Calculate daily emissions in accordance with Env-A 1314.02 and Env-A 800;c.Calculate annual emissions in accordance with this part; andd.Comply with the applicable recordkeeping and reporting requirements specified in Env-A 900.N.H. Code Admin. R. Env-A 1314.06
Derived From Volume XXXVIII Number 32, Filed August 9, 2018, Proposed by #12584, Effective 8/15/2018, Expires 8/15/2028.