NJDEP Air Permitting Introduces the GP-009B for Boilers Combusting Natural Gas


The NJDEP Division of Air Quality announced a new General Permit (GP-009B) for boiler(s) greater than or equal to 10 MMBTU/hr and less than 50 MMBTU/hr. This General Permit replaced the previous GP-009A for boiler(s) and indirect fired process heater(s) greater than or equal to 10 MMBTU/hr and less than 50 MMBTU/hr combusting gaseous fuel.

Each Boiler currently registered under GP-009A can continue to operate until:

  • The current General Permit expiration date, before which time the permittee must register for authorization under GP-009B, as applicable, or apply for and receive approval for a source-specific permit and certificate for continued operation of the equipment; or

  • Each Boiler replaced or modified, before which time the permittee must register for authorization under GP-009B, as applicable, or apply for and receive approval for a source specific permit and certificate prior to operation of the replaced or modified equipment.

The most significant changes specific to the GP-009B permits are:

  • Natural Gas (NG) and No. 2 Fuel Oil (under specific operating scenarios) are the only fuels that can be used in GP-009B permits. Propane could still be used on existing GP-009A permits in addition to NG and No. 2 Fuel Oil.

  • There is a maximum limit of NG fuel consumption of 840 MMSCF/year for GP-009B permits, that previous versions of this general permit did not have. The purpose of this limit is to control the Potential-to-Emit (PTE) emissions for all boilers registered under this general permit using state of the art emission levels for NOx, CO, and VOC and USEPA AP-42 Emission Factors for TSP, PM-10, PM2.5, SO2 and HAP emissions.

  • There is a specific minimum Stack(