It shall be unlawful for any person, firm, partnership, corporation, association,
or any agent thereof to disturb the surface or subsurface of land consisting of 2.5
acres or more, excluding approved construction activities, within the area particularly
described in Section 12.32.020, by excavating, smooth tillage, removing natural vegetation, or by any other action
which raises substantial dust into the atmosphere or which would create, contribute
to, or aggravate conditions conducive to the raising of substantial dust into the
atmosphere, or by grazing sheep which number 25 or more regardless of the acreage,
without first having obtained a permit issued by the agricultural commissioner of
the county of Los Angeles, and having complied with the terms and conditions of said
permit.
