Chain of Custody Form Instructions for WTC Building Sampling

NYC 9/11 Public Portal Document

Results From Air Samples Results From Dust Samples

Building Fibers In Air Asbestos In Asbestos In Dust SVF In Air Asbestos in SVF In Dust Number Sample Location PCM (f/cc) AlrTEM(f/cc) SEM ff/cc) Dust PLM (%) TEM(%) PLM(%) 26 Residence 2 <.001 ND ND ND

27 Outside <.001 ND <1 15 27 Common <.001 ND <1 10 27 Residence 1 <.001 ND <1 10 27 Residence 2 <^ ND ND 10

28 Outside <.001 ND ND 15 28 Common 0.001 ND ND 10 28 Residence 1 <.001 ND insufficient Material ND 28 Residence 2 0^ ND ND ND

29 Outside <.001 ND ND ND 29 Common <.001 ND ND ND 29 Residence 1 <.001 ND ND ND 29 Residence 2 <.001 ND ND ND

30 Outside Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled 30 Common Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled 30 Residence 1 <.001 ND ND ND 30 Residence 2 <.001 ND ND ND

Results fyr Comparison Buildings Sampled Above 59th Street (Buildings 31-34) 31 Outside <.001 Not Sampled Not Sampled Not Sampled 31 Outside co-located 0.001 0. 9 Not Sampled Not Sampled Not Sampled 31 Common <.001 ND ND ND 31 Residence 1 <.001 <0.000039 ND ND ND 31 Residence 2 <.001 <0.555338 ND ND ND

32 Outside <.001 <0.555339 Not Sampled Not Sampled Not Sampled 32 Common 0.55a <0.00004 ND ND ND 32 Residence 1 <.001 ND ND ND 32 Res 1 co-located 0.001 0.5555537 Not Sampled Not Sampled Not Sampled 32 Residence 2 Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled Not Sampled

33 Outside Not Sampled Not Sampled Not Sampled Not Sampled 33 Common Not Sampled Not Sampled Not Sampled Not Sampled 33 Residence 1 Not Sampled Not Sampled Not Sampled Not Sampled 33 Residence 2 <.001 <0. 55552n ND ND ND

34 Outside <.001 <0.000043 Not Sampled Not Sampled Not Sampled

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