Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 725 - INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES
Subpart BB - AIR EMISSION STANDARDS FOR EQUIPMENT LEAKS
Section 725.962 - Skip Period Alternative for Valves

1) An owner or operator must comply with the requirements for valves, as described in Section 725.957, except as described in subsections (b)(2) and (b)(3).

2) After two consecutive quarterly leak detection periods with the percentage of valves leaking equal to or less than two percent, an owner or operator may begin to skip one of the quarterly leak detection periods (i.e., the owner or operator may monitor for leaks once every six months) for the valves subject to the requirements in Section 725.957.

3) After five consecutive quarterly leak detection periods with the percentage of valves leaking equal to or less than two percent, an owner or operator may begin to skip three of the quarterly leak detection periods (i.e., the owner or operator may monitor for leaks once every year) for the valves subject to the requirements in Section 725.957.

4) If the percentage of valves leaking is greater than two percent, the owner or operator must monitor monthly in compliance with the requirements in Section 725.957, but may again elect to use this Section after meeting the requirements of Section 725.957(c)(1).