Ethylene Oxide Ambient Air Monitoring Requirements

Section 249.110  Ethylene Oxide Ambient Air Monitoring Requirements a)         The Agency must conduct ambient air monitoring for ethylene oxide in or around each location specified in Section 249.105 for a period of six consecutive calendar months.  During that time frame, the Agency must collect a sample every 12 days.  Each sample must be collected over a period of approximately 24 hours. b)         The six-month monitoring period must commence no later than one year after January 25, 2021. c)         The Agency must comply with all applicable USEPA regulations and guidelines for ambient air monitoring.