Chapter 29. Control of NO

“Natural gas pipeline compression station” means a main line natural gas transmission station, consisting of one or more internal combustion engines, used to compress natural gas, thereby sustaining flow of natural gas through the pipeline.

“Parametric optimization” means the adjustment of an internal combustion engine, such as adjustment of the air-to-fuel ratio, that maximizes engine efficiency and minimizes emissions.

Facilities with five or fewer internal combustion engines shall meet a combined maximum hourly emission limit of 300 pounds per hour or less.

Facilities with more than five engines shall meet a combined maximum hourly emission limit of 566 pounds per hour or less.

The NO_x emission rates in §C(2) of this regulation apply to a stationary internal combustion engine used to compress natural gas at a natural gas pipeline compression station if the engine is one of the types and corresponding sizes identified in §C(2) of this regulation.

Emission Rates.

The NO_x emission rates in §C(2) of this regulation shall apply on and after May 1, 2003.

Continuously monitor NO_x emissions with a continuous emissions monitor (CEM) certified in accordance with 40 CFR Part 60 or use an alternative method approved by the Department and the EPA;

On or before May 1, 2002, and every year thereafter, collect NO_x emissions data that was obtained pursuant to §A(1) of this regulation; and

Submit emissions data collected pursuant to §A(2) of this regulation to the Department for the previous calendar year by April 1 of each year.

The owner or operator of an internal combustion engine subject to this chapter that is equipped with a CEM shall demonstrate compliance with the NO_x emissions limits and rates in Regulation .02B, C of this chapter using CEM data.

The sum of the NO_x emissions from all affected engines at the facility shall be used to demonstrate compliance with Regulation .02B.

The owner or operator of an internal combustion engine subject to this chapter that is not equipped with a CEM shall demonstrate compliance with the NO_x emissions limits and rates in Regulation .02B, C of this chapter as follows:

The results of the stack tests or alternative emissions test for each engine and fuel consumption records submitted to the Department pursuant to Regulation .05 of this chapter shall be used to calculate NO_x emissions for each affected engine.

The sum of the NO_x emissions from all of the stationary internal combustion engines at a natural gas pipeline compression station that are subject to this chapter shall be used to demonstrate compliance with Regulation .02B.

Stack test schedule. The owner or operator of an internal combustion engine subject to this chapter that is not equipped with a CEM shall conduct a stack test or an alternative emissions test approved by the Department to determine NO_x emissions for each affected engine not less than once each 12-month period.