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NYC 9/11 Public Portal Document

Air/Asbestos Location # Date PCM (f/cc) Location # Date PCM (f/cc) Location # Date PCM (f/cc) 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 0.0085 0.034 33A 9/20 9/21 <LOQ (10/2/01) 9/18 9/16 0.013 9/27 0.018 9/22 <LOQ 11 9/17 0.012 9/27 0.016 9/23 0.029 9/18 0.011 20 9/16 0.035 9/24 0.039 Location # Date PCM (f/cc) 1 9/12 0.01 9/19 <LOQ 9/17 0.024 9/25 0.007 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 9/29 0.007 10/1 0.009 9/25 0.008 9/25 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 10/2 0.007 9/14 <LOQ 9/29 0.015 9/29 0.013 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 6A 9/17 0.007 9/17 0.013 10/2 0.019 10/2 0.009 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 7 9/21 <LOQ 23 9/15 0.007 9/20 <LOQ 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 9/21 9/24 0.017 9/18 0.021 9/24 <0.008 <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 9/27 9/30 0.042 9/22 0.01 10/1 0.008 <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 9/15 0.024 9/26 0.023 The U.S. and NYC standard for 0.009 ---- 10/2 9/16 0.05 9/27 <LOQ asbestos in community and 8 9/19 0.03 9/21 0.01 9/17 0.002 9/29 0.02 residential buildings is 0.01 9/22 <0.01 14 9/15 0.045 9/30 <LOQ fibers/cubic centimeter (f/cc) In 9/23 <LOQ 9/16 0.045 10/1, 0.009 Indoor air. DEP is augmenting 9/24 0.009 15 9/14 0.009 10/2 0.009 asbestos sampling being done 9/25 9/15 0.076 28 9/13 <LOQ by USEPA and other state and 0.012 9/23 0.014 29 9/14 0.027 9/26 <LOQ 9/24 0.012 9/20 <LOQ - -- city agencies. 9/27 0.009 9/25 0.009 9/25 0.008 9/29 0.008 Results Indicate that, as 9/26 0.011 9/27 <LOQ 9/30 <LOQ 10/1 0.009 9/27 0.014 9/29 0.058 expected, asbestos Is present 10/2 0.009 9/28 <0.009 9/30 0.076 in some of the debris at the 9/29 0.009 10/1 0.015 site and In areas very close to 8A 9/23 <LOQ 9/30 0.009 0.016 9/27 <LOQ 10/2 the site. As of September 28, -- ------ 10/1 0.009 30 9/15 0.033 9/30 <LOQ 10/2 0.008 9/16 0.03 2001, most alr sampling 9 9/19 <LOQ results outside the security 16 9/23 0.01 31 9/19 0.013 9/20 <LOQ zone were below the standards 9/24 0.007 9/21 <LOQ 9/21 <LOQ 9/22 9/25 0.009 9/22 <LOQ for asbestos in indoor air. <LOQ 9/26 0.008 9/23 <LOQ 9/23 <LOQ 9/27 0.05 9/24 0.01 As testing continues, there 9/24 0.007 9/28 <0.009 9/25 0.007 9/25 0.008 may be the possibility of occa- 9/29 0.009 9/26 <LOQ 9/26 <LOQ 9/30 0.024 9/27 <LOQ sional short-term Increases In 9/27 <LOQ 10/1 0.009 9/29 0.02 levels of asbestos in the alr 9/29 0.007 above the residential standard 10/2 0.007 9/30 0.031 9/30 <LOQ 10/1 0.008 17 9/19 0.012 10/1 0.009 of 0.01 fibers per cubic cen- 10/2 0.007 9/21 <LOQ 10/2 0.008 timeter of air. When the meas- 9/22 <LOQ 32 9/21 0.011 ured level for the outdoor 10 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 9/25 0.008 9/24 0.01 the samples are being further 9/22 <LOQ 9/26 <LOQ 9/25 0.008 analyzed to determine how 9/23 <LOQ many of the fibers are actually 9/27 <LOQ 9/26 0.014 9/24 0.012 9/29 0.007 9/27 <LOQ --- 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

NYC-WTC 000148599