Ill. Admin. Code tit. 35, § 220.210
c) For MSW landfills with an NMOC emissions rate less than 50 Mg/yr, the owner or operator shall:
d) For MSW landfills with emissions equal to or greater than 50 Mg/yr, calculated pursuant to Section 220.260(a) of this Subpart, within 30 months after the date when the first annual NMOC emission rate report equals or exceeds 50 Mg/yr, an owner or operator shall:
1) Install and operate:
2) Certify compliance: Within 6 months of initial startup or upon change in method of compliance, or by October 31, 2001, whichever is later, the owner or operator of an MSW landfill subject to the control requirements of this Subpart must certify compliance with the requirements of this Subpart by submitting to the Agency the following:
C) A demonstration that the control system meets the requirements of Section 220.230 of this Subpart: