To determine if your agricultural operation requires a federal air permit from the APCD, you may perform a "Quick Check" by answering the following question.  However, it should be noted that this "Quick Check" is based on specific assumptions (e.g., crop water usage factors, well depths, emission factors, and equipment usage) that are not accurate for all farms. Greenhouses and dairy, poultry, or cattle grazing operations without internal combustion engines will not require federal operating permits and do not have to do any further screening at this time.

Do you have a farming operation with 2000 or more contiguous acres irrigated using stationary internal combustion engines?  Click yes or no, below. For more information on how to determine what makes up a stationary source, see this page.

In order to determine if you will need to obtain a permit, we must first calculate the emissions from your agricultural operation. A permit will be required if the calculated Nitrogen Oxides (NOx) or Volatile Organic Compound (VOC) emissions from your agricultural operation are equal to or greater than 100 tons/year.

Please answer the questions below.  If the question does not apply to your operation, you may leave the box blank.

If you would like to view the formulas used for calculating emissions, click "view calculation" in the last column of each row.

If you irrigate your crops with pumps powered by stationary engines running on gasoline, diesel, LPG, or natural gas, please enter the acreage and well depth for each relevant crop.

If you have any gasoline storage tanks, please enter the number of tanks.

If you have a dairy operation with a waste lagoon, please enter the number of dairy cows you have.