Summary of Proposed NOₓ Emission Limits for Industrial Sources

Summary of Proposed NO_X Emissions Limits for Pipeline Transportation of Natural Gas

Summary of Proposed NO_X Emissions Limits for Kiln Types in Cement and Concrete Product Manufacturing

The EPA is also proposing a source cap limit expressed in ton per day (tpd) of NO_X for each individual cement plant according to the following equation:

Where:
CAP2015 Ozone Transport  = total allowable NO_X emissions from all cement kilns located at one cement plant, in tons per day, on a 30-operating day rolling average basis;
KD = 1.7 pounds NO_X per ton of clinker for dry preheater-precalciner or precalciner kilns;
KW = 3.4 pounds NO_X per ton of clinker for long wet kilns;
ND = the average annual production in tons of clinker plus one standard deviation for the three most recent calendar years from all dry preheater-precalciner or precalciner kilns located at one cement plant; and
NW = the average annual production in tons of clinker plus one standard deviation for the 3 most recent calendar years from all long wet kilns located at one cement plant.
An affected cement plant will need to comply with both the source cap limit and the specific NO_X emissions limits assigned to its individual kiln type(s).

Summary of Proposed NO_X Emissions Limits for Iron and Steel and Ferroalloy Emissions Units

Summary of Proposed NO_X Emissions Limits for Furnace Unit Types in Glass and Glass Product Manufacturing

Summary of Proposed NO_X Emissions Limits for High-Emitting Equipment and Large Boilers in Basic Chemical Manufacturing, Petroleum and Coal Products Manufacturing, and Pulp, Paper, and Paperboard Mills