anure means??? (1)digestive emissions, feces, urine, urea and other excrement from livestock (as defined by 7 C.F.R. 205.2); (2)any associated bedding, compost, raw materials or other materials commingled with such excrement from livestock (as defined by 7 C.F.R. 205.2); (3)any process water associated with the items referred to in paragraph (1) or (2); and (4)any byproducts, constituents, or subs