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SHS transfer in MUH <br />8.A. - Page 24 <br />A <br />225- <br />Lag Time: 2 Minutes <br />p=0.777 (p=0.011) <br />1 C I g <br />150 - <br />E <br />a <br />75 - <br />Unit — Unit <br />Unit ID \ Unit ID <br />9 ®24 <br />Second Floor <br />��� cig Lag Time: 3 Minutes <br />p=0.745, (p<0.01) <br />0 <br />18:47 18:51 18:55 18:59 19:03 19:07 19:11 19:15 19:19 19:23 19:27 19:31 19:35 19:39 19:46 19:50 <br />Time <br />Patio • Non -Smoker (Unit ID 24) ....... Hallway —A Smoker (Unit ID 9) <br />B <br />Unit ID Unit <br />18 = <br />Unit = Unit ID <br />1 <br />140 <br />>�> Ground Floor <br />120 <br />`c 1 cig <br />100Lag Time: 10 Minutes <br />>�/ <br />Z�/ l 1 cig r=0.821, p<0.01 <br />£ 80 - 2 1 cig <br />a� <br />60 - <br />0. <br />40 - <br />20 - <br />0 . <br />20:36 20:38 20:40 20:42 20:44 20:46 20:48 20:50 20:52 20:54 20:56 20:58 21:00 21:02 21:04 <br />Time <br />Patio —Non -Smoker (Unit ID 18) ------- Hallway —Smoker (Unit ID 1) <br />Figure 2. (a) Illustration of real-time changes in PM,, levels in a multiunit residential building (Building 5). Note: The patio door of the smoke - <br />permitted unit was open during the timeframe presented. No other instances of appliance use, pyrolosis, or ventilation were reported during this <br />timeframe. No air monitoring was conducted in unlabeled units. (b) Illustration of real-time changes in PMZ s levels in a multiunit residential build- <br />ing (Building 1). Note: The front door of the smoke -permitted unit was opened during the timeframe presented. No other instances of appliance <br />use, pyrolosis, or ventilation were reported during this timeframe. No air monitoring was conducted in unlabeled units. <br />monitor readings was 2 min for the first smoking occurrence <br />and 3 min for the second occurrence. The constant PMZ s levels <br />in the hallway implicate the shared wall between units as the <br />primary mechanism of transfer. Similarly, Figure 2 shows PMZ 5 <br />levels over a 30 -min period in a 11 -unit MUH structure. The <br />front door of the smoke -permitted unit was opened during the <br />1.1 <br />presented timeframe and the hallway monitor was located im- <br />mediately outside the entrance to the smoke -permitted unit. <br />Following the smoking events in the smoke -permitted unit, <br />elevated PMZ s levels were observed in the hallway. Immediately <br />following the door's closure, levels diminished in the hallway. <br />Shortly thereafter, elevated levels were observed in the smoke-free <br />0 <br />O <br />n <br />0 <br />6 <br />tD <br />N <br />O <br />O <br />