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Contact Information:
Calaveras County APCD
Government Center
891 Mountain Ranch Rd.
San Andreas, CA 95249-9709
(209) 754-6504
Or view the Department's
Website
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Calaveras County Air Pollution Control District
-CALIFORNIA
DE MINIMIS EXEMPTIONS (Must Meet 1298):
The district does not have any exemptions established in its rules. Permitting officials have the authority to
exempt units on a case by case basis.
MINOR SOURCE PERMITTING:
BACT is required for any sources with a potential to emit 15 pounds per hour or 150 pounds per day of any criteria
pollutant. 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 |
Units that do not trigger BACT will still have to meet RACT levels of control. No examples of RACT are available
as limits are determined on a case by case basis.
The permitting process generally takes 2-3 months depending on whether there is a need for public notice.
TREATMENT OF EMERGENCY ENGINES:
All emergency engines must be permitted. If an emergency engine has a potential to emit less than 10 tons per year
the district will not require RACT or BACT, but will limit the hours of operation for the unit. These units can
only operate during emergencies or for maintenance.
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