The IDNR is proposing to rescind the voluntary operating permit (VOP) program that is used by facilities to enforce voluntary limits to avoid the requirement to obtain a federal Title V operating permit (limits are more commonly established through construction permits to avoid Title V permitting). The IDNR accepted public comments through March 21, 2014 concerning this proposal and is currently evaluating submitted comments. The IDNR anticipates having affected facilities covered under an alternative permitting option and their VOP permits rescinded by May 1, 2014.