Asbestos air monitoring lab results, 100 Church Street, Mar 2002

NYC 9/11 Public Portal Document

SciL^ob#: 202033427 Page 1

Client Name: TRC Environmental Corporation Phase Contrast Microscopy (PCM) Fiber Results I I 35052-0000-00007; NYC Law Department; 100 Church St./ OSHA I I Flow Air Fiber Fibers SciLab Client Rate Duration Filtered Density Cone. Fields Fibers TWA Sample # Sample# /Location Collected (liiers/inin.) (min.) (liters) (Fibers/mm^ ) (Pibers/cc)

01 GS-3/22/02-OSHA-0243 3/22/02 2 321 642 too 5 6.37 <0.004 Alberto Ganay 02 GS-3/22/02-OSHA-0244 3/22/02 2 321 642 100 5 6,37 <0.004 Ramon Rodriguez. 03 GS-3Z22/02-OSHA-0245 3/22/02 2 320 640 JOO 4 5.10 <0.004 Manolo Alies 04 GS-3/22A)2-OSHA.0246 3/22/02 2 300 600 100 4 5.10 <0.004 Alberto Ganay 05 GS-3/22/02-OSHA-0247 3/22/02 2 300 600 too 4 5.10 < 0.004 I Ramon Rodriguez I I 06 GS-3/22/02-OSHA.0248 3/22/02 2 300 600 100 5 6.37 <0.004 Manolo Alics 07 GS-3/22/02-OSHA-0249 3Z22/02 0 0 0 100 0.5 0.64 Field Blank Foolnolest / 08 GS-3/22/02-OSHA-0250 3/22/02 0 0 0 too 0.5 0.64 Field Blank • Footnotes; / Reporting Notes: (1) Pibers/oc cannot be calcu] :&) wiUrtSoair volume. AnaSyied by; Kenny AMlyted; 3/25/92 SaniplM annlyied by NteS?r74«l(/^Meibod?Kue *2, S/lS/Wiumil of Detections 5.5 fiben per) 00 Scldi or 7 ribets9nin2: This report relate* ONLY (n the taiiiple analysis expressed ss fibershq mni of filter area; ND=No fibers abunrved: NAb Kot Analysed; WattoiuBecIcen.{reticle field area b0u0O7S5 nuiil: TWA » 8 Hr TWA calenlailisn assume* aro exposure lor renuiodei of 8 hr period not sampled; Upper 9516 Cesifiiteiioe limit (Einploytrs Ctinipliince Test)* Cilculatcd as a ooe sided UCL to determine 95% certainly of cotnplisoce with IBs nx)l fibct/cc standard; Estimated lelatixe standard deviatloo; lii(ra1abSr=0.405, InleilabSiB<M5,Kew York samples (NYSDOHELAPLab# 11480): KalioinllnslibKeofSlandaids and Technology Accredilati on requirements mandate lltat this repeal must not be reproduced except in fii1l withnit die approval of the labeaatocy. AIKA # 102845.

NYC-WTC_000174422