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Contact Information:
Imperial County APCD
150 South 9th Street
El Centro, CA 92243-2801
(760) 482-4606
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Imperial County Air Pollution Control District-CALIFORNIA
DE MINIMIS EXEMPTIONS (Must Meet 1298):
Engines less than 50 hp are exempt from permitting.
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
BACT. The air district follows CARB's
guidance for permitting of electric generating technologies. This guidance recommends BACT for all
criteria pollutants. 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 |
In addition, all units must meet an opacity limit of 20% and maintain operating records.
The permitting process usually takes from 1 week to 10 days. The application fee is $108.
TREATMENT OF EMERGENCY ENGINES:
All emergency engines will be permitted at 100 hours for maintenance and testing. There is no hourly operating
limit, but units may only operate during emergencies.
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