8/30/2016 - Use and Permitting of Emergency Generators

On May 1, 2016, the D.C. Circuit Court vacatur of the Reciprocating Internal Combustion Engine (RICE) National Emission Standards for Hazardous Air Pollutants (NESHAP), 40 CFR 63, Subpart ZZZZ, and New Source Performance Standards (NSPS), 40 CFR 60, Subparts IIII and JJJJ, provisions allowing emergency engines to operate up to 100 hours per year for emergency demand response (EDR) and voltage/frequency deviations takes effect.  After the vacatur, engine operating for EDR and voltage/frequency deviations must comply with the standards for nonemergency engine (those that Air Quality typically calls continuous duty engines).  EPA has provided a detailed guidance which can be found at:  https://www3.epa.gov/ttn/atw/icengines/docs/RICEVacaturGuidance041516.pdf

EPA also requested and received a voluntary remand of the provision allowing emergency engines to operate for up to 50 hours per year to mitigate local transmission and distribution limitations.

Air quality will be removing these provisions from issued permits as the permit is revised or renewed and will not be including them in future permits.

Last modified on 8/31/2016 15:02