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Installing an engine

No permit amendments are needed for holders of registration (Options C and D), capped, and general permits (state or Part 70) to install a non-emergency engine, if the total facility emissions will remain below the permit limits or the applicable requirements are included in the general permit.

However, regardless of permit type, you must complete modeling and submit it to the MPCA:

Registration or capped permits

No action is necessary if your stationary engine is covered under your facility's existing registration or capped air-emissions permit. But if the engine is subject to NSPS regulations and its displacement is less than 30 liters per cylinder, notify the MPCA with this form: 

If your engine is subject to NSPS Subpart IIII and its displacement is 30 liters/cylinder or more, you don't qualify for a registration or capped permit.

You still qualify for a registration Option B permit if the engine emissions are considered an insignificant activity. If not, you must obtain a new type of permit.

Other permit types

Individual state or Part 70 permit holders with a stationary engine that is subject to NESHAP or NSPS regulations may need to apply for a permit amendment, if three or more years remain on the terms of their permit. If you hold an unexpiring permit, refer to Minn. Rule 7007.0400, subp. 3. If you have a pending amendment or permit application with the MPCA that doesn't include your stationary engine, you must supplement the application with the new information.

No permit action is necessary if you hold one of these general permits and your engine meets the specifications in the general permit. If not, you may need a different type of air permit.