35 Ill. Adm. Code 371.262
Chapter II - Permits
Section 371
Section 371.262 Chapter II −
Permits
a) Include legible copies of the construction permit and
operating permit, or of the joint construction and operating permit.
b) State the design average flow, design maximum flow, and the
design population served.
c) Include the telephone number of the Agency regional office.
d) Include the telephone number of the Agency Compliance
Assurance Section: (217)782-9720.
e) Include the telephone number for the reporting of spills of
oil and other hazardous materials to the Agency Emergency Action Center: (217)782-3637.