What is NOx? How much is produced by this system? 0.81 lb/hr (86.4 ppm) of NOx Does JBII have the permit to release NOx into the air? No Recently there was a post with someone with 18 years experience. He also indicated that JBII could reduce the NOx level. Just because JBII output is below NYS guidelines of maximum output of pollution, does not mean JBII can commence P2O without permits.