35 Ill. Adm. Code 218.610
Testing and Monitoring
Section 218
Section 218.610 Testing and
Monitoring
a) Compliance with Sections 218.607(b)(2), 218.608 and 218.609 of
this Part shall be determined by visual inspection; and
b) Compliance with Sections 218.607(a)(2) and (b)(1) of this Part
shall be determined by methods described in EPA-450/3-82-009 (1982)
incorporated by reference in Section 218.112 of this Part.
c) If a control device is used to comply with Section 218.607(a)(1)
of this Part, then compliance shall be determined using 40 CFR 60 Appendix A,
Method 25 (1984) incorporated by reference in Section 218.112 of this Part.