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Contact Information:
Santa Barbara County APCD
260 North San Antonio Road
Suite A
Santa Barbara, CA 93110-1315
(805) 961-8800
Or view the Department's
Website
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Santa Barbara County Air Pollution Control District-CALIFORNIA
DE MINIMIS EXEMPTIONS (Must Meet 1298):
A source that emits less than 1 ton per year of any uncontrolled criteria pollutant.
Any change in an existing facility that meets the following requirements will be exempt from permitting:
The emission increase for any one emission unit shall not exceed 2.40 lbs/day of any affected pollutant, except CO,
which shall not exceed 19.20 lbs/day.
The aggregate emissions increase at the source due to all de minimis physical changes at the source since November
15, 1990, shall not exceed 24.00 lbs/day, except CO, which shall not exceed 60.00 lbs/day.
A permit is also, not required for new, modified, or existing stationary sources that emit less than 1.00 ton per year unless the sources is
subject to EPA, NSPS, or HAP requirements.
The owner or operator must keep a record of these de minimis changes.
Internal Combustion Engines
The following are exempt from obtaining a permit:
- Compresion ignition engines with a bhp of 50 or less
- Spark ignition piston-type internal combustion engines with a maximum rating of 100 bhp
or less or gas turbine engines with a maximum heat input rate of 3 MMBtu/hr or less at standard conditions,
except if the total hp or individual spark ignition piston-type internal combustion engines less than 100
bhp but greater than 20 bhp at a stationary source, as defined in Rule 102, exceeds 500 bhp in whihc case the APCD rule 202 individual
engines are not exempt
Combustion Equipment (Other than Internal Combustion Engines)
Combustion Equipment with a maximum heat input of less than 5MMBtu/hr is exempt if fired exclusively with one
of the following:
- Natural or produced gas which meets General Order 58-A of the Public Utility Commission
- Liquefied petroleum gas, which meets Gas Processors Association Standards
- Or a combination of the above mentioned fuels
Combustion equipment with a maximum heat input rate of 1MMBtu/hr or less is exempt and does not count towards
the 25 tons per calendar year stationary soure exemption threshold listed above in this paragraph provided that the equipment
is fired exclusively with the above mentioned fuels or combination thereof.
MINOR SOURCE PERMITTING:
All units with a potential to emit greater than 25 pounds per day of a criteria pollutant will be required to apply
district BACT. The air district follows CARB's guidance for permitting of electric generating technologies. 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 |
Sources with potential emissions of 120 pounds per day or greater are required to complete air quality modeling.
No limitations will be imposed on sources with potential emissions less than 25 pounds per day.
Permitting generally takes 60-90 days, but can take 120 days or more if a public comment period is required.
TREATMENT OF EMERGENCY ENGINES:
Emergency engines are exempt from permitting if they are operate less than 200 hour per year. These units must
keep records and can only operate during emergencies and maintenance. The district is in the process of changing
to a more stringent rule.
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