Perchloroethylene (tetrachloroethyelene, PERC) is used as a dry cleaning agent. It is a recognized animal carcinogen, but its carcinogenic potential in humans has not been verified. The ACGIH TLV for PERC has two standards, a TWA of 25 ppm and a STEL of 100 ppm. The OSHA PEL is 100 ppm. Which of the following establishments (A-E) will be cited with fines and orders for engineering improvements on the basis of three days of exposure monitoring? Group of answer choices 35 ppm average after 8 hr monitoring on three consecutive days 108 ppm average day 1 (30 min measurement); no further measurements 152 ppm average on three consecutive days, 8 hours/day 142 ppm (30 min measurement); 80 ppm average for 3 days 27 ppm average (3 days)