Using the TWA compliance formula calculate the time weight average for the following employee exposure to iron oxide based on hours sampled and reported concentration. Determine is an over exposure exists if the PEL for Iron Oxide is 15 mg/m3. 2 hours @5 mg/m3 2 hour @ 45 mg/m 4 hours @ 3 mg/m2 14 mg/m3 24 mg/m3 4 mg/m3 16 ppm D Question 14 5 pts ind thaar Page 2 of 3 666 words Focu 30 le MacBook Pro 80 888