AIR EMISSIONS REGULATIONS:

Air Quality Status	Nonattainment for ozone (The AQMD is all of Ventura County) EPA's Nonattainment Areas
Major Source Threshold	PTE 25 tons of NOx or VOC
Minor Source Permitting Exemption	Less than 50 hp
Minor Source Treatment	BACT
Emergency Generating Limits	50 hours maintenance

DE MINIMIS EXEMPTIONS (Must meet 1298)

To be exempted from permitting a unit must be less than 50 hp. District notification is not required.

MINOR SOURCE PERMITTING

BACT is required for any new unit. BACT is typically the same as EPA's certification requirements for offroad engines. Beyond this CARB guidance will be followed. Sample BACT for control of NOx from turbines and internal combustion engines is as follows:

Size of Unit	Level of Control (ppm)
>3 MW	9
3-12 MW simple cycle	2.5
3-12 MW combined cycle	5
12-50 MW simple cycle	2.5
12-50 MW combined cycle	5
IC Engines	9

Additional limits include a 0.05 fuel sulfur limit and an opacity limit of 20%.

Permitting generally takes from 30 days to 120 days.

TREATMENT OF EMERGENCY ENGINES

Emergency units can be exempted from permitting if they limit maintenance hours to 50 hours per year and operate only during emergencies. District notification is not required.