Who needs a permit?
The following agricultural sources are required to obtain a permit from the Sac Metro Air District:
Agricultural facilities that have actual emissions equal to or greater than any of the following:
- VOCs: 12.5 tons per year
- NOx: 12.5 tons per year
- SOx: 50 tons per year
- PM10: 50 tons per year
- CO: 50 tons per year
An agricultural operation may have actual emissions that exceed the above thresholds if it is:These emissions estimates are based on assumptions (e.g., crop water usage factors, well depths, emission factors, and equipment usage) that may not be accurate for all farms. To officially determine whether or not your farming operation will require a permit, the Sac Metro Air District must perform a calculation of the emissions.
Agricultural facilities that have the potential to emit equal to or greater than any of the following:
VOCs: 25 tons per year
NOx: 25 tons per year
SOx: 100 tons per year
PM10: 100 tons per year
To determine whether or not permits are required, the potential to emit may be calculated using the Title V Calculation Form.
Any confined animal facility that maintains on any one day any one or more of the following:
- 1,000 or more milk-producing dairy cows;
- 3,500 or more beef cattle;
- 7,500 or more calves, heifers, or other cattle;
- 100,000 or more turkeys;
- 650,000 or more chickens other than laying hens;
- 650,000 or more laying hens;
- 3,000 or more swine;
- 15,000 or more sheep, lambs, or goats;
- 2,500 or more horses;
- 650,000 or more ducks;
- 30,000 or more rabbits or other animals Agricultural facilities
Farms that don't meet the criteria above do not need permits from the Sac Metro Air District. However, they do need to register with the Sac Metro Air District all diesel-fired water pumps and generators rated at greater than 50 horsepower (link).
