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On July 15, 2019, the Maryland Department of the Environment (MDE) announced the new and finalized general permit for emergency generators. The new general permit covers emergency generators rated at 373 kW up to and including 2000 kW.

As we mentioned in our article posted February 19, 2019, only compression ignition engines whose primary purpose is emergency operation (as well as operation for required maintenance and testing) would be able to apply for coverage under this general permit. This includes compression ignition engines subject to either the New Source Performance Standards for Stationary Compression Ignition Internal Combustion Engines (NSPS Subpart IIII), or the Reciprocating Internal Combustion Engines (RICE) Maximum Achievable Control Technology (RICE MACT) standard. The emergency generators may operate in certain non-emergency situations for 50 hours per year, as described in Title 40 of the Code of Federal Regulations (40 CFR) §60.4211(f)(3) and 40 CFR §63.6640(f)(3).

Due to significant comments received from stakeholders, MDE changed the applicability requirements of the general permit so that emergency generators located at a major source of nitrogen oxides (NOx) are now able to apply for this general permit. Previously, major sources of NOx were unable to apply for this general permit. However, as proposed in the draft permit, emergency generators located at major sources of hazardous air pollutants (HAPs) are not eligible for this general permit.

The general permit for emergency generators is a one-time only permit, required before construction and/or installation of the engine. If construction or installation does not take place within 18 months of the permit issuance, then the approval terminates. The cost of the general permit is $400 per engine. The general permit becomes effective on the date MDE receives the completed Request for Coverage form and fee, and confirmation of coverage will be provided within 30 days. This new general permit to construct will be effective on or around August 19, 2019.

Trinity has extensive experience assisting facilities permit and maintain compliance with their air quality emission sources in Maryland. If you have any questions regarding this new general permit, please give us a call at (240) 379-7490.