35 Ill. Adm. Code 405.105
Surface Drainage Control
Section 405
Section 405.105 Surface
Drainage Control
a) A State or NPDES permit must include a plan for surface
drainage control as a condition.
b) The applicant's plan for surface drainage control must be
incorporated into a permit by reference if it meets the standard of Section
405.102(a); otherwise, the Agency must deny the permit or issue it with a modified
plan.
c) Mining activities and depositing mine refuse must be planned
and conducted so as to avoid contact or interference with waters of the State that
could reasonably cause water pollution.
d) Stream diversion, redirection or impoundment must not be
undertaken when the Agency demonstrates that there is an economically
reasonable alternative.