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Concentrated Animal Feeding Operations

Concentrated Animal Feeding Operation means an "animal feeding operation" which meets the criteria in 40 CFR part 122, appendix B, or which the Director designates as a significant contributor of pollution pursuant to 40 CFR 122.23. Animal feeding operations defined as "concentrated" in 40 CFR part 122 appendix B are as follows:

a. New and existing operations which stable or confine and feed or maintain for a total of 45 days or more in any 12-month period more than the numbers of animals specified in any of the following categories:

  1. 1,000 slaughter or feeder cattle;
  2. 700 mature dairy cattle (whether milkers or dry cows);
  3. 2,500 swine weighing over 55 pounds;
  4. 500 horses;
  5. 10,000 sheep or lambs;
  6. 55,000 turkeys;
  7. 100,000 laying hens or broilers when the facility has unlimited continuous flow watering systems;
  8. 30,000 laying hens or broilers when facility has liquid manure handling system;
  9. 5,000 ducks; or
  10. 1,000 animal units from a combination of slaughter steers and heifers, mature dairy cattle, swine over 55 pounds and sheep;

b. New and existing operations which discharge pollutants into navigable waters either through a man-made ditch, flushing system, or other similar man-made device, or directly into waters of the United States, and which stable or confine and feed or maintain for a total of 45 days or more in any 12-month period more than the numbers or types of animals in the following categories:

  1. 300 slaughter or feeder cattle;
  2. 200 mature dairy cattle (whether milkers or dry cows);
  3. 750 swine weighing over 55 pounds;
  4. 150 horses;
  5. 3,000 sheep or lambs;
  6. 16,000 turkeys;
  7. 30,000 laying hens or broilers when the facility has unlimited continuous flow watering systems;
  8. 9,000 laying hens or broilers when the facility has a liquid manure handling system;
  9. 1,500 ducks; or
  10. 300 animal units (from a combination of slaughter steers
    and heifers, mature dairy cattle, swine over 55 pounds and sheep).

Provided, however, that no animal feeding operation is a concentrated animal feeding operation as defined above if such animal feeding operation discharges only in the event of a 25-year, 24-hour
storm event.

 

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