; 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 2 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