Connecticut Department of Energy & Environmental Protection

What is the category of your existing stationary spark ignition engine of less than or equal to 500 horsepower (HP)?

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 Emergency  Non-emergency 4-stroke lean burn, rated between 100 and 500 horsepower, inclusive
 Non-emergency 2-stroke lean burn, rated between 100 and 500 horsepower, inclusive  Non-emergency 4-stroke lean burn, rated less than 100 horsepower
 Non-emergency 2-stroke lean burn, less than 100 horsepower.  Non-emergency 4-stroke rich burn, rated between 100 and 500 horsepower, inclusive
 Non-emergency 4-stroke rich burn, rated less than 100 horsepower

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