NR 428.04(2)(g)2.e.e. 25 parts per million dry volume (ppmdv), corrected to 15% oxygen, on a 30-day rolling average basis for a combined cycle combustion turbine with a maximum design power output of less than 25 MWe. NR 428.04(2)(g)3.3. Units fired by an integrated gasification process. No person may cause, allow or permit nitrogen oxides to be emitted from a combined cycle combustion turbine that is fired by fuel derived from an integrated gasification process in amounts greater than 15 parts per million dry volume (ppmdv), corrected to 15% oxygen, on a 30-day rolling average basis. NR 428.04(2)(g)4.4. Units fired by a biologically derived gaseous fuel. No person may cause, allow or permit nitrogen oxides to be emitted from a biologically derived gaseous fuel fired combustion turbine in amounts greater than those specified in this subdivision. NR 428.04(2)(g)4.a.a. 35 parts per million dry volume (ppmdv), corrected to 15% oxygen, on a 30-day rolling average basis for a simple cycle combustion turbine. NR 428.04(2)(g)4.b.b. 35 parts per million dry volume (ppmdv), corrected to 15% oxygen, on a 30-day rolling average basis for a combined cycle combustion turbine. NR 428.04(2)(h)(h) Reciprocating engines. No person may cause, allow or permit nitrogen oxides to be emitted from a reciprocating engine in amounts greater than those specified in this paragraph. NR 428.04(2)(h)1.1. 6.9 grams per brake horsepower-hour for a compression ignition unit with a maximum design power output of 1000 hp or greater. NR 428.04(2)(h)2.2. 4.0 grams per brake horsepower-hour for a spark ignition unit with a maximum design power output of 1000 hp or greater. NR 428.04(2)(i)(i) Emissions units using secondary fuel. An emissions unit that is capable of firing secondary fuel is not subject to the requirements under this subsection when utilizing only a secondary fuel if any of the following apply: NR 428.04(2)(i)1.1. The emissions unit heat input capacity or maximum design power output while utilizing the secondary fuel is less than the applicability thresholds under this subsection. NR 428.04(2)(i)2.2. The emissions unit burns the secondary fuel only during any of the following periods: NR 428.04(2)(i)2.a.a. Supply interruption or curtailment of primary fuel. The secondary fuel usage under this paragraph may not exceed 500 hours within a 12 consecutive month time period unless the owner or operator obtains a fuel variance under s. NR 436.06. NR 428.04(2)(i)2.b.b. Periodic testing, maintenance, or operator training of the secondary fuel when the periodic testing, maintenance, or operator training does not exceed a combined total of 48 hours during any calendar year. NR 428.04(2)(i)3.3. The secondary fuel constitutes less than 1 percent on an energy equivalent basis of the emissions unit’s fuel consumption within the most recent 12 consecutive month time period. NR 428.04(3)(a)1.1. The owner or operator of each NOx emissions unit subject to the requirements of sub. (2) shall comply with the monitoring requirements of subch. III. NR 428.04(3)(a)2.2. The emissions measurements recorded and reported in accordance with subch. III shall be used to determine compliance by the unit with the applicable NOx emissions performance standard under sub. (2). NR 428.04(3)(b)(b) Specific requirements. The owner or operator of each NOx emissions unit subject to the requirements of sub. (2) shall determine the unit’s average NOx emission rate using methods and procedures specified in 40 CFR part 60, Appendix B, incorporated by reference in s. NR 484.04 (21), or other emissions monitoring methods approved by the department. NR 428.04(4)(a)(a) Except as provided in subd. 1., the owner or operator of each NOx emissions unit subject to the requirements of this section shall keep on site at the source each of the following documents for a period of 5 years from the date the document is created. NR 428.04(4)(a)1.1. All emissions monitoring information, in accordance with subch. III; except that, to the extent that subch. III provides for a 3-year period for record retention, the 3-year period shall apply. NR 428.04(4)(a)2.2. Copies of all reports, compliance certifications and other submissions and all records made or required under the NOx emissions performance program. NR 428.04(4)(b)(b) The owner or operator of the NOx emissions source shall submit the compliance reports and certifications required under the NOx emissions performance program in conjunction with those required under the construction permit requirements of ch. NR 406 and the operation permit requirements of s. NR 407.09. NR 428.04(4)(c)(c) The owner or operator claiming exemption from the requirements under sub. (2) pursuant to sub. (2) (i) shall keep a record of all of the following: NR 428.04(4)(c)1.1. Each occurrence when a secondary fuel was burned in accordance with the provisions under sub. (2) (i). NR 428.04(4)(c)2.2. The reason for each occurrence when a secondary fuel was burned in accordance with the provisions under sub. (2) (i). NR 428.04(4)(c)3.3. The monthly and yearly total hours for each occurrence when a secondary fuel was burned in accordance with the provisions under sub. (2) (i).