NJDEP Electronic Netting Analysis Tool (eNAT)


Certain New Jersey Department of Environmental Protection (NJDEP) air permit applications pursuant to N.J.A.C. 7:27-22 require facilities to submit a netting analysis (N.J.A.C. 7:27-18.7). This must be conducted for all operating permit modifications that will require an emission increase and all general operating permit registrations. A netting analysis is conducted in order to calculate if the maximum allowable emissions stated in a permit application would result in a net emission increase or significant net emission increase, emissions equal to or greater than the increase levels below, at the facility for any of the following air contaminants:

Air Contaminant Significant Net Emission Increase Levels (tons/year)

S02 40

TSP 25

PM-10 15

NOx 25

CO 100

Pb 0.6

VOC 25

In the past, this netting analysis calculation was done by facilities usin