; AFO (A) In general The term animal feeding operation or AFO means a lot or facility at which— (i) for not less than a total of 45 days in any 12-month period, animals (other than aquatic animals) are— (I) stabled or confined; and (II) fed or maintained; and (ii) crops, vegetation, forage growth, or postharvest residues are not sustained in the normal growing season over any portion of the lot or facility. (B) Aggregation Two or more lots or facilities described in subparagraph (A) shall constitute a single animal feeding operation if the lots or facilities— (i) are located within 3 miles of each other; and (ii) are under common ownership or control. (C) Exclusion The term animal feeding operation or AFO does not include a stockyard (as that term is defined in section 302(a) of the Packers and Stockyards Act, 1921 ( 7 U.S.C. 202(a) )). (3) Large concentrated animal feeding operation; large CAFO The term large concentrated animal feeding operation or large CAFO means an AFO at which are present not less than— (A) 700 mature dairy cows, milked or dry; (B) 1,000 veal calves; (C) 1,000 cattle (including heifers, steers, bulls, cows, and calves) other than mature dairy cows or veal calves; (D) 2,500 swine, each weighing not less than 55 pounds; (E) 10,000 swine, each weighing not more than 55 pounds; (F) 500 horses; (G) 10,000 sheep or lambs; (H) 55,000 turkeys; (I) in the case of an AFO that uses a liquid manure handling system— (i) 30,000 laying hens or broilers; or (ii) 5,000 ducks; or (J) in the case of an AFO that uses a system other than a liquid manure handling system— (i) 125,000 chickens (other than laying hens); (ii) 82,000 laying hens