“Garbage,” as used in this part, shall include all of the following: (a) animal, fruit and vegetable refuse; (b) offal; (c) leaves and cuttings, trimmings from trees, shrubs and grass; (d) inorganic refuse and rubbish; (e) anything thrown away as worthless.
“Board of supervisors,” as used in this part, means the board of supervisors of the county in which the greatest portion of the area of the district, is situated at the time of the filing of the petition for formation, unless another meaning is specified.