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Agricultural Operations Permitting Calculator
Quick Check
To determine if your agricultural operation requires an air permit, you may perform a "Quick Check" by answering the following questions.  This "Quick Check" is 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 determine whether or not permits are required with more certainty, (a) emissions should be calculated and compared with the AQMD's permitting thresholds (see the Title V calculation form (PDF 34 Kb)) , or (b) emissions should be calculated using the AQMD's automated calculator.

QUICK CHECK: If you answer "yes" to any of the questions below, continue to "Automated Calculator" for a more accurate analysis.

1. Farming operation with 350 or more contiguous acreage irrigated using internal combustion engines,
2. Dairy or feedlot operations with 1,954 or more cattle, or
3. Broiler, laying hen, or turkey ranch with 130,211 or more birds

Otherwise, you do NOT need an air permit.


Automated Calculator
We must calculate the emissions from your agricultural operation to determine if you will need to obtain a permit. A permit will be required if the calculated NOx and VOC emissions from your agricultural operation is equal to or greater than 12.5 tons/year.

In order to determine this, please answer the following six questions.

Start Calculator
Total Emissions (tons/year)
   Local Permitting  Title V Permitting
NOx:00
VOC:00

STEP 1/6: Emissions From Dairy Cattle
If you have a dairy operation, please enter the number of dairy cows you have. Otherwise, leave the fields blank and click on CONTINUE.

Milking Cows ?
Dry Cows ?
Heifers (15-24 months) ?
Heifers (7-14 months) ?
Heifers (4-6 months) ?
Calves (<3 months) ?

Go Back Continue
Total Emissions (tons/year)

NOx: 0 tons/yr
VOC: 0 tons/yr

STEP 2/6: Emissions From Cattle Feedlots
If you own a cattle feedlot, please enter the number of cattle you feed at your feedlot. Otherwise, leave the field blank and click on CONTINUE.

Feeder Cattle ?

Go Back Continue
Total Emissions (tons/year)

NOx: 0 tons/yr
VOC: 0 tons/yr

STEP 3/6: Emissions From Poultry
If you have an egg ranch, please enter the number of laying hens at your ranch. Otherwise, leave the field blank and click on CONTINUE.

Laying Hens ?

Go Back Continue
Total Emissions (tons/year)

NOx: 0 tons/yr
VOC: 0 tons/yr

STEP 4/6: Emissions From Poultry
If you have a poultry ranch, please enter the maximum number of birds at your ranch at any one time and the number of days the poultry houses are empty each year. Otherwise, leave the fields blank and click on CONTINUE.

Number of Birds Empty Days
Broiler Chickens ?
Turkeys ?

Go Back Continue
Total Emissions (tons/year)

NOx: 0 tons/yr
VOC: 0 tons/yr

STEP 5/6: Emissions From Gasoline Storage Tanks
If you have any gasoline storage tanks, please enter the number of gallons of gasoline (not diesel, propane, nor lpg) dispensed annually. Otherwise, leave the fields blank and click on CONTINUE.

Aboveground Tanks ?
Belowground Tanks ?

Go Back Continue
Total Emissions (tons/year)

NOx: 0 tons/yr
VOC: 0 tons/yr

STEP 6/6: Emissions From Internal Combustion Engines
If you irrigate your crops with pumps powered by engines running on gasoline, diesel, LPG, or natural gas, please enter the acreage and well depth for each relevant crop. Otherwise, leave the fields blank and click on EVALUATE.

Acres Thomas Map Page
(Unknown is 400 ft)		 Percent Irrigation With Nonelectric Pumps (Unk is 100)

Field Crops

 ?
Grains ?
Truck Farming ?
Deciduous Orchards ?
Subtropical Orchards ?
Vineyards ?
Total Acres

Go Back Evaluate

NOx: 0 tons/yr
VOC: 0 tons/yr

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