[R.O. 1966 C.S. § 3:1-15]
a. 
No person shall cause, suffer, allow or permit visible smoke to be emitted into the outdoor air from the combustion of fuel in any stationary indirect heat exchanger having a rated hourly capacity of less than 200,000,000 B.T.U. gross heat input or discharging through a stack or chimney having an internal cross-sectional dimension of less than 60 inches.
b. 
No person shall cause, suffer, allow or permit smoke the shade or appearance of which is darker than number 1 on the Ringelmann Smoke Chart or greater than 20% opacity, exclusive of water vapor, to be emitted into the outdoor air from the combustion of fuel in any stationary indirect heat exchanger having a rated hourly capacity of 200,000,000 B.T.U. or greater gross heat input or discharging through a stack or chimney having an internal cross-sectional dimension of 60 inches or greater.
c. 
The provision of paragraphs a and b shall not apply to smoke which is visible for a period not longer than one minute in a thirty-minute period.
[R.O. 1966 C.S. § 3:1-16]
If the results of any investigation arising from a complaint, routine inspection or from surveillance activity conducted by the Agency, indicates that fuel-burning equipment emits fly-ash from solid fuel combustion, the Director shall gather all appropriate data regarding that source and forward the same to the State Bureau of Air Pollution Control for Chapter 5 review, which regulates fly-ash emissions.
[R.O. 1966 C.S. § 3:1-17]
No person shall cause, suffer, allow or permit particles from any equipment including but not limited to incinerators, furnaces, kettles, grinders, cupolas, roasters, dryers, that have a shade which is greater than No. 1 on the Ringelmann Smoke Chart, or greater than 20% opacity, exclusive of water vapor.