The entire treatment and storage lagoon area shall be enclosed with fencing to preclude livestock and prevent access by the general public. Warning signs shall be posted at 100-yard intervals on exterior fences designating the area as a "Wastewater Treatment Facility". A vehicle access gate of sufficient width to accommodate mowing equipment and maintenance vehicles shall be provided. All access gates shall be provided with locks.
Ill. Admin. Code tit. 35, § 372.430