Below are other guidance documents for the NSPS for Spark Ignition Internal Combustion Engines.

• April 2, 2013 - Implementation Question and Answer Document for NESHAP for Stationary RICE and NSPS for Stationary CI and SI ICE (PDF)(15 pp, 60 K)
• November 22, 2016 - RICE NESHAP and ICE NSPS Applicability Determinations (PDF)(120 pp, 15 MB)