PCM air sampling data log, Sept-Oct 2001

NYC 9/11 Public Portal Document

PCM (f/cc) J Location # Date PCM (^cc) Location # Date PCM (^cc) Air/Asbestos Location.# Date 11 9/13 <LOQ 18 9/15 <-0046 33 9/15 0.0043 sampling data 9/14 9/15 <LOQ 0.031 19 9/15 9/18 0.0085 0.034 33A 9/20 9/21 <LOQ <LOQ (10/2/01) 9/16 0.013 9/27 0.018 9/22 9/23 <LOQ 0.029 11 9/17 0.012 9/27 0.016 9/18 0.011 20 9/16 0.035 9/24 0.039 Ljjcation # Date PCM (f/cc) 9/19 <LOQ 9/17 0,024 9/25 0,007 I 9/12 0.01 9/20 <LOQ 21 9/13 0.1 9/26 <LOQ 2 9/12 0.01 9/21 <LOQ 9/14 0.007 9/27 <LOQ 3 9/15-9/16 <.0043-0.0089 9/22 <0.01 9/15 0.034 9/29 0.009 4 9/19 0.012 9/23 <LOQ 9/16 0.03 9/30 0.02 9/20 <LOQ 9/24 0.009 9/17 0.017 10/1 0.009 9/21 <LOQ 9/25 0.007 9/18 0.027 10/2 0.008 9/22 0.009 9/26 0.008 9/19 0.02 34 9/19 <LOQ 9/23 <LOQ 9/27 <LOQ 9/20 <LOQ 9/21 <LOQ 9/24 0.008 9/28 <0.009 9/21 0.008 34 9/22 <0.008 9/25 0.007 9/29 0.009 9/22 0.008 9/23 <LOQ 9/26 0.017 9/30 <LOQ 9/23 0.026 9/24 <0.008 9/27 0.014 10/1 0.009 9/25 0.008 9/25 0.007 9/29 0.007 10/2 0,008 9/26 0,078 9/26 <LOQ 9/30 <LOQ 12 9/13 0,22 9/27 0.01 9/27 <LOQ 10/1 0.007 9/14 <LOQ 9/29 0,015 9/29 0.013 10/2 0.007 9/15 0.022 9/30 0.011 9/30 0.009 5 9/21 <LOQ 9/16 0,03 10/1 0.035 10/1 0.009 6 9/12 0,08 9/17 0,013 10/2 0.019 10/2 0.009 6A 9/17 0.007 9/18 0.018 22 9/14 <LOQ 35 9/20 0.01 9/25 0.007 9/19 0.014 9/15 0.035 9/29 0.008 10/1 0.007 9/20 <LOQ 9/16 0.03 36 9/19 <LOQ 10/2 0.007 9/21 <LOQ 23 9/15 0.007 9/20 <LOQ 7 9/18 0.008 9/22 0.01 24 9/15 0.019Z 9/21 0.009 9/19 <LOQ 9/23 <LOQ 9/14 0.02 37 9/23 <LOQ 9/20 <LOQ 9/24 0.017 9/18 0.021 9/24 <0.008 9/21 <LOQ 9/25 0.007 26 9/15 0.008 9/25 0.007 9/22 0.009 9/26 0.01 9/16 0.01 9/26 <LOQ 9/23 <LOQ 9/27 0.016 9/17 0.062 9/27 <LOQ 9/24 <LOQ 9/28 <0.009 27 9/20 <LOQ 9/29 0.015 9/25 0.008 9/29 0.041 9/21 0,014 9/30 0.015 9/26 <LOQ 9/30 0.042 9/22 0.01 10/1 0.008 9/27 <LOQ 10/1 0,009 9/23 <LOQ 9/29 0.009 10/2 0.007 9/24 <0.011 9/30 <LOQ 13 9/14 0,002 9/25 0,008 10/1 0.007 The U.S. and NYC standard for 9/15 0.024 9/26 0.023 10/2 0.009 9/16 0,05 9/27 <LOQ asbestos in community and 8 9/19 0.03 9/17 0.002 9/29 0.02 residential buildings is 0.01 9/21 O.Oi fibers/cubic centimeter (f/cc) in 14 9/15 0,045 9/30 <LOQ 9/22 <0.01 9/16 0,045 10/1 0.009 indoor air. DEP is augmenting 9/23 <LOQ 9/24 0.009 15 9/14 0.009 10/2 0.009 asbestos sampling being done 9/15 0.076 28 9/13 <LOQ by USEPA and other state and 9/25 0.012 9/23 0.014 29 9/14 0.027 9/26 <LOQ city agencies. 9/24 0.012 9/20 <LOQ 9/27 0.009 9/25 0.009 9/25 0.008 9/29 0,008 9/26 0.011 9/27 <LOQ Results indicate that, as 9/30 <LOQ expected, asbestos is present 9/27 0.014 9/29 0.058 10/1 0.009 9/28 <0.009 9/30 0.076 in some of the debris at the 10/2 0.009 9/29 0.009 10/1 0.015 site and in areas very close to 8A 9/23 <LOQ 9/30 0.009 10/2 0.016 the site. As of September 28, 9/27 <LOQ 10/1 0.009 30 9/15 0.033 9/30 <LOQ 2001, most air sampling 10/2 0.008 9/16 0.03 9 9/19 <LOQ 16 9/23 0.01 31 9/19 0.013 results outside the security 9/20 <LOQ zone were below the standards 9/24 0.007 9/21 <LOQ 9/21 <LOQ for asbestos in indoor air. 9/25 0.009 9/22 <LOQ 9/22 <LOQ 9/26 0.008 9/23 <LOQ 9/23 <LOQ 9/24 0.007 9/27 0.05 9/24 0.01 As testing continues, there 9/28 <0.009 9/25 0.007 may be the possibility of occa­ 9/25 0.008 9/29 0.009 9/26 <LOQ 9/26 <LOQ 1 sional short-term increases in 9/30 0.024 9/27 <LOQ 9/27 <LOQ 10/1 0.009 9/29 0.02 levels of asbestos in the air 9/29 0.007 10/2 0.007 9/30 0.031 above the residential standard 9/30 <loq 17 of 0.01 fibers per cubic cen­ 9/19 0.012 10/1 0.009 10/1 0.008 9/21 <LOQ 10/2 0.008 timeter of air. When the meas­ 10/2 0.007 10 9/22 <LOQ 32 9/21 0.011 ured level for the outdoor 9/19 0.05 9/23 <LOQ 9/22 0.01 ambient air is above .01 f/cc, 9/20 <LOQ 9/24 <0,007 9/23 <LOQ 9/21 <LOQ the samples are being further 9/25 0.008 9/24 0.01 9/22 <LOQ 9/26 <LOQ 9/25 0.008 analyzed to determine how 9/23 <LOQ 9/27 <LOQ i 9/26 0,014 many of the fibers are actually 9/24 0.012 9/29 0.007 1 9/27 <I.OQ asbestos fibers. 9/25 0,008 9/30 <LOQ 9/29 0.08 9/27 <LOQ 10/1 0.009 9/30 0,022 10/1 0.007 10/2 0.009 10/1 0.012 10/2 0.009 17A 9/19 0.01 10/2 0,009 LOQ= Limit of Quantification

CITY_21MC100_013379552

NYC-WTC_000175010