This article shall not apply to any individual, corporation, partner-
ship, or cooperative disposing of livestock-feeding facility waste from facilities with a maximum total capacity of 1,000 cattle or 5,000 swine, provided that if such individual, corporation, partnership, or cooperative shall provide an approved waste disposal system which is capable of properly disposing of the runoff from a “ten-year storm,” such individual shall be further exempt regardless of total per head capacity. Nothing in this part shall limit the right of any person to use poultry or other animal manure for fertilizer.