Are there different rulings for natural gas engines versus diesel engines?
RICE NESHAP consists of two separate rulings. Compression ignited stationary engines (diesel) are overseen by the Feb, 2010 ruling with an enforcement deadline of May, 2013. Natural gas fueled stationary engines need to comply to the Spark Ignited RICE NESHAP (SI RICE NESHAP) ruling. The ruling was passed in August, 2010, with a final compliance date of November, 2013. More details of each ruling are contained on the below sections of the website.