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.