35 Ill. Adm. Code 372.320
Application Area Access Control
Section 372
Section 372.320 Application
Area Access Control
The entire application area and
buffer area shall be posted at 100 yard intervals around the perimeter
identifying the area as a "Treated Wastewater Application Area". The
application area shall be fenced to prevent access by children and unauthorized
personnel unless the pretreatment provided meets the urban area pretreatment
requirements of Section 372.400(b) or the land application system is located in
an agricultural area or a forested area that does not have general public
access.