Specifications include, but are not limited to: 1.Waste Anesthetic Gas (WAG) Survey-Semi Annual a.Obtain personal (worker’s breathing zone) and ambient air levels. b.Simulate real procedure of anesthesia machine with closed-loop circuit. c.Evaluate each anesthetic breathing circuit (machine, scavenging device, tubing, etc.). d.Perform leak detection of Nitrous Oxide and halogenated agents at machine and ancillary parts. e.Calculate and verify air exchange rate per hour and air flow pattern relative to surroundings. f.Verify compliance with NIOSH ceiling limit. 2.Room Ventilation Evaluation-Annual a.Test air exchange rate per hour and flow pattern: b.Negative pressure room air exchange rate verification (Isolation rooms, soiled utility. rooms, etc.). c.Positive pressure room air exchange rate verification (ORs, clean rooms, etc.).