All Concentrated Animal Feeding Operations need a water pollution control permit. A "Concentrated Animal Feeding Operation" is a lot or facility that stables or confines and feeds or maintains animals for a total of 45 days or more in any 12-month period and meets the following criteria for a large, medium, or small concentrated animal feeding operation:
| Table 1. Number of Animals to Define Large, Medium, and Small Concentrated Animal Feeding Operations | |||
|---|---|---|---|
| Type of Animal: | Concentrated Animal Feeding Operations/th> | ||
| Feeding Operation: | Large | Medium | Small |
| Animal numbers equal to or more than: |
Animal numbers equal to: |
Animal numbers less than: |
|
| Dairy cows (mature - milked or dry) | 700 | 200 to 699 | 200 |
| Veal Calves | 1,000 | 300 to 999 | 300 |
| Cattle other than mature dairy cows or veal calves 1 | 1,000 | 300 to 999 | 300 |
| Swine (weighing more than 55 pounds) | 2,500 | 750 to 2,499 | 750 |
| Swine (weighing less than 55 pounds) | 10,000 | 3,000 to 9,999 | 3,000 |
| Horses | 500 | 150 to 499 | 150 |
| Sheep or Lambs | 10,000 | 3,000 to 9,999 | 3,000 |
| Turkeys | 55,000 | 16,500 to 54,999 | 16,500 |
| Laying hens or broilers 2 | 30,000 | 9,000 to 29,999 | 9,000 |
| Chickens, other than laying hens 3 | 125,000 | 37,500 to 124,999 | 37,500 |
| Laying hens 3 | 82,000 | 25,000 to 81,999 | 25,000 |
| Ducks 2 | 5,000 | 1,500 to 4,999 | 1,500 |
| Ducks 3 | 30,000 | 10,000 to 29,999 | 10,000 |
| Geese | 30,000 | 10,000 to 29,999 | 10,000 |
1 Cattle includes but is not limited to heifers, steers, bulls and cow/calf pairs.
2 Animal feeding operation uses a liquid manure handling system.
3 Animal feeding operation uses other than a liquid manure handling system.
NOTE: Other animal types not listed in the above table may be considered on a case-by-case basis.