N.Y. Comp. Codes R. & Regs. tit. 6, § 222.4 – Control requirements.

(a) Effective May 1, 2021, owners or operators of economic dispatch sources subject to this Part must comply with the following requirements:
1. (1) combustion turbines firing natural gas: must be of model year 2000 or newer or must have a NO_x emission rate less than or equal to 2.96 pounds per megawatt-hour as certified in writing by a professional engineer;
2. (2) combustion turbines firing oil: must be of model year 2000 or newer or must have a NO_x emission rate less than or equal to 2.96 pounds per megawatt-hour as certified in writing by a professional engineer;
3. (3) compression-ignition engines: must be of model year 2000 or newer or must have a NO_x emission rate less than or equal to 2.96 pounds per megawatt-hour as certified in writing by a professional engineer;
4. (4) lean-burn engines: must be of model year 2000 or newer or must have a NO_x emission rate less than or equal to 2.96 pounds per megawatt-hour as certified in writing by a professional engineer; or
5. (5) rich-burn engines: must be equipped with three-way catalyst emission controls.
(b) Effective May 1, 2025, owners or operators of economic dispatch sources subject to this Part must comply with the following NO_x emission limits:
1. (1) combustion turbines firing natural gas: 25 parts per million on a dry volume basis corrected to 15 percent oxygen;
2. (2) combustion turbines firing oil: 42 parts per million on a dry volume basis corrected to 15 percent oxygen;
3. (3) spark ignition engines firing natural gas: 1.0 grams per brake horsepower-hour;
4. (4) compression-ignition engines firing distillate oil (solely or in combination with other fuels) with nameplate ratings less than 750 horsepower: 0.30 grams per brake horsepower-hour; or
5. (5) compression-ignition engines firing distillate oil (solely or in combination with other fuels) with nameplate ratings greater than or equal to 750 horsepower: 0.50 grams per brake horsepower-hour.
(c) An extension to the subdivision (b) of this section compliance date of no more than two years may be granted to sources meeting the requirements of subdivision (a) of this section if owners or operators demonstrate a need for additional time to install controls or install new engines or turbines. Facility owners or operators must provide evidence, such as a contract, to the department’s satisfaction to demonstrate that they intend to meet the emission limits set forth in subdivision (b) of this section as expeditiously as possible, but not later than April 30, 2027.