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Summary of TEM microscopy results for asbestos air samples, Oct

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Summary table of transmission electron microscopy results for asbestos analysis in air samples collected at the World Financial Center.

NYC-WTC_000174998
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NYC 9/11 Public Portal Document

SciLabJob#; 101101047 Client Name; HP ENVIRONMENTAL. INC. Table I Sununary of Transmission Electron Microscopy (TEM) Results for Asbestos (atij) 35802; WTC - Bldg. A; World Financial Center i '

Asbestos Structurej! Detected Structure Structure 1 Ail Area * Analytical Density j Concentration Type SciLab Client Dilution Filtered Analyzed Sensitivity (Microns) (stnic/sq. mm.) (stxuc/cc air) of Sample » Sampled Factor (liters) (sq.mm.) (stnic/cc air) 0.5-5.0 >5.0 Total >5.0 Total >5.0 Total Asbestos <S

w 01 BLDO A-0928.A1 390 -too 0.0098 8.0 0.0 8.0 <10 79.8; <0.0098 0.0787 chrysotile K G to G M 02 BLDO A-0928-A2 380 .100 0.0101 17.0 2.0 19.0 19.9 18M 0.0202 0.1919 chrysotile O H H 03 BLDC A-0928-A3 390 .100 0.0098 ’ 13.0 3.0 16.0 29.9 0.0293 0.1573 chrysotile O ■.i ■ G V O CM blank BLDG A-0928-FBI .100 I.OOOO 0.0 0.0 0.0 <10 <!a NSD 5 H M O o 05 blank BLDG A-0928-PB2 .100 1.0000 0.0 ao 0.0 <10 NSD H o f s M a O M V S a H M V > 3 O

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NYC-WTC_000174998

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NYC-WTC_000174998Source: NYC Law Department, mirrored locally

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