35 Ill. Adm. Code 724.962
Skip Period Alternative for Valves
Section 724
Section 724.962Â Skip Period
Alternative for Valves
a)Â Â Â Â Â Â Â Â An owner or operator subject to the requirements of Section
724.957 may elect for all valves within a hazardous waste management unit to
comply with one of the alternative work practices specified in subsections
(b)(2) and (b)(3).
b)Â Â Â Â Â Â Â Â Reduced Monitoring
1)Â Â Â Â Â Â Â Â An owner or operator must comply with the requirements for
valves, as described in Section 724.957, except as described in subsections
(b)(2) and (b)(3).
2)Â Â Â Â Â Â Â Â 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 724.957.
3)Â Â Â Â Â Â Â Â 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 724.957.
4)Â Â Â Â Â Â Â Â If the percentage of valves leaking is greater than 2 percent,
the owner or operator must monitor monthly in compliance with the requirements
in Section 724.957, but may again elect to use this Section after meeting the
requirements of Section 724.957(c)(1).