NYC-WTC_000206828

NYC 9/11 Public Portal Document

© Air/Asbestos Sampling Data Location # Date 11 9/13 9/14 9/15 PCM (f/cc) <LOQ <LOQ 0.031 - nA Location # Date 19 9/15 9/18 9/27 PCM (f/cc) 0.0085 0.034— O.OI8^ Location # Date 3SA 9/20 9/21 9/22 PCM (^cc) <LOQ <LOQ <LOQ 0,016.^ 9/23 0.029 (10/3/01)^ 9/16 9/17 0,013 0,012— 20 9/27 9/16 0.035 — 9/24 0.039-* 9/18 0.011-«- 9/17 0.024 9/25 0.007 Location # PCMVg^ 9/19 <LOQ 21 9/13 0.1 9/26 <LOQ 1 9/12 0.01 9/20 <LOQ 9/14 0.007 9/27 <LOQ 0.01 9/21 <LOQ 9/15 0.034 — 9/29 0.009 — 2 9/12 9/15-9/16 <.0043-0.0089 9/22 <0,01— 9/16 0.03 9/30 0.02.* 3 4 9/19 0.012 — 9/23 <LOQ 9/17 oni7«^ 10/1 0.009 <LOQ 9/24 0.009 9/18 0.027 10/2 0.008 9/20 <LOQ 9/25 0.007 9/19 0.02 10/3 <LOQ 9/21 0.009 9/26 0.008 9/20 <rjXJ 34 9/19 <LOQ 9/22 9/23 <LOQ <LOQ 9/21 0.008 9/21 <L(0Q 9/24 0.008 9/28 <0.009 9/22 0.008 9/22 <0.008 9/25 0.007 9/29 0.009 9/23 0.026 ** 9/23 <LOQ 0.017 9/30 <LOQ 9/25 0.008 9/24 <0.008 9/26 9/27 0.014 10/1 0.009 9/26 0.078 -*• 9/25 0.007 9/29 0.007 10/2 0.008 9/27 0.01 —' 9/26 <L(X? 9/30 <LOQ 10/3 0.021 9/29 0.015 9/27 <L(0Q 10/1 0.007 12 9/13 0.22 9/30 0.011 9/29 0.013^ 10/2 0.007 9/14 <LOQ 10/1 0.035 9/30 0.009 <LCX5 9/15 0,022 *■ 10/2 0.019 -e. 10/1 0.009 10/3 9/16 0.03-^ 10/3 0.023 10/2 0.009 5 9/21 <LOQ 0.08 —- 9/17 0,013- 22 9/14 <LOQ 10/3 0.011- 6 9/12 0.007 9/18 0,018 - 9/15 0.035 35 9/20 0.01 6A 9/17 0.007 9/19 0.014- 9/16 0.03 9/29 0.008 9/25 9/20 <LOQ 23 9/15 0.007 36 9/19 <LOQ 10/1 0,007 0.007 9/21 <LOQ 24 9/15 0.019Z — 9/20 <LOQ 10/2 0,008 0.01 *• 25 9/14 0.02^ 9/21 0.009 7 9/18 9/22 9/19 <LOQ 9/23 <LOQ 9/18 0.021^ 37 9/23 <L(X? 9/20 <L.OQ 9/24 0.017 • 26 9/15 0.008 9/24 <0.008 0.007 9/16 0.01 9/25 0.007 9/21 <LOQ 9/25 0.009 9/26 0.01 9/17 0.062 — 9/26 <LOQ 9/22 <LOQ 9/27 O.OlO's- 27 9/20 <LOQ 9/27 <LOQ 9/23 <0.009 9/21 0.014 w. 9/29 0.015^ 9/24 <LCX3 9/28 0.04 f:L 9/22 0.01 — 9/30 0.015 •* 9/25 0.008 9/29 0.042’* 9/23 <L(3Q 10/1 0.008 9/26 <LOQ 9/30 <LOQ 10/1 0.009 9/24 <0,011 10/3 <Lt)Q 9/27 9/29 0.009 10/2 0.007 9/25 0.008 9/30 <LOQ 10/3 <LOQ 9/26 0.023^ 10/1 0.007 13 9/14 0.002 9/27 <LOQ 10/2 0.009 9/15 0.024’- 9/29 0.02 — 9/16 0.05 • 9/30 <LOQ 10/3 0.010 10/1 0.009 NYC DEP is monitoring the 8 9/19 0.03 — 9/17 0.002 0.045 - 10/2 0.009 ambient outdoor air for 9/21 0.01 14 9/15 9/22 <0.01 9/16 0.045 — 10/3 0.010 asbestos. There is currently no 9/23 <LOQ 15 9/14 0.009 28 9/13 <LOQ outdoor ambient standard for 9/24 0.009 9/15 0.076 - 29 9/14 0.0273?^ asbestos. The U.S. and NYC 0.014 - 9/20 <LOQ 9/25 0.012 iK 9/23 standard for asbestos in com­ 9/26 <LOQ 9/24 0.012 9/25 0.008 9/27 <LOQ munity and residential buildings 9/27 0.009 9/25 0.009 0.008 9/26 0.011 - 9/29 0.058 is 0.01 fibers/cubic centimeter 9/29 9/30 <LOQ 9/27 0.014 * 9/30 0.07&- (f/cc) in indoor air. DEP is aug­ 10/1 0.009 9/28 <0.009 lO/l 0.015 - menting asbestos sampling 10/2 0.009 9/29 0.009 10/2 0.016- being done by USEPA and other 10/3 <LOQ 9/30 0.009 10/3 0.020^ 0.033-s' state and city agencies. 8A 9/23 <LOQ 10/1 0.009 30 9/15 9/27 <LCXi 10/2 0.008 9/16 0.03 .c* 9/30 <LOQ 10/3 <LOQ 31 9/19 0.013^ Results indicate that, as expect­ 10/3 <LOQ 16 9/23 0.01 9/21 <LOQ ed, asbestos is present in some 9 9/19 <LOQ 9/24 0.007 9/22 <LOQ of the debris at the site and in 9/25 0.009 9/23 <LOQ 9/20 <LOQ areas very close to the site. As 9/21 <LOQ 9/26 0.008 9/24 0.01 — 9/25 0.007 of September 28, 2001, most air 9/22 <LOQ 9/2'7 0.05 9/23 <tOQ 9/28 <0.009 9/26 <LOQ sampling results outside the 9/24 0.007 9/29 0.009 9/27 <LOQ security zone were below the 9/25 0.008 9/30 0.024 9/29 0.02 standards for asbestos in 9/26 <LOQ 10/1 0.009 9/30 0.031 indoor air. 9/27 <LOQ 10/2 0.007 10/1 0.009 9/29 0.007 10/3 <LOQ 10/2 0.008 0.012 10/3 <LOQ As testing continues, there may 9/30 <tr)Q 17 9/19 10/1 0.008 9/21 <LOQ 32 9/21 0.011 be the possibility of occasional 10/2 0.007 9/22 <LOQ 9/22 0.01 c-* short-term increases in levels of 10/3 <LOQ 9/23 <LOQ 9/23 <LOQ asbestos in the air above the 9/24 <0.007 9/24 0.01 —' 10 9/19 0.05 9/25 0.008 residential standard of 0.01 9/20 <LOQ 9/25 0.008 9/26 0-014 — fibers per cubic centimeter of 9/21 <LOQ 9/26 <LOQ 9/22 <LOQ 9/27 <LOQ 9/27 <LOQ air. When the measured level 9/23 <LOQ 9/29 0.007 9/29 0.08 - for the outdoor ambient air is 9/24 0.012 9/30 <LOQ 9/30 0.022 above .01 f/cc, the samples are 9/25 0.008 10/1 0.009 10/1 0.012 being further analyzed to deter­ 9/27 <LOQ 10/2 0.009 10/2 0.009 10/3 <LOQ mine how many of the fibers are 10/1 0.007 10/3 <LOQ 10/2 0.009 17A 9/19 0.01 33 9/15 0.0043 actually asbestos fibers. 10/3 cLOQ 18 9/15 <.0046 LOQ= Limit of Quantification

CITY_21MC100_0 10210953

NYC-WTC_000206828