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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 Trade Center site.

NYC-WTC_000174997
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NYC 9/11 Public Portal Document

SciLabJob#: 1011011)02 1 Client Name: HP ENVIRONMENTAL. INC. Table I Summary of Transmission Electron Microscopy (TEM) Results for Asbestos (air) 35803; WTC-WFC; New York, NY Structure Structure Air Area * Analytical Asbestos Structures Defected Density Concentration Type SciLab Client Dilution Filtered Analyzed Sensirivily (Microns) (stnic/sq. mtn.) (struc/cc air) of Sample # Sample # Factor (liters) (tq. ram.) (slruc/cc air) 0.5-5.0 >5.0 Total >5.0 Total >5.0 Total Asbestos § w G 01 Tumer-TR 1^0929-Al 720 .100 0.0053 2.0 1.0 3.0 10.0 29.9 0.0053 0.0160 chryiotile to G TEM Direct Prep Method M O 02 BIdg(A)0929-Pl 480 .100 0.0080 7.0 1.0 8.0 10.0 79.8 0.0080 0.0640 chQ'soUle H TEM Direci Prep Melbod H O 03 Bldg (A) 0929-P2 470 .100 0.0082 18,0 4.0 22.0 39.9 219,3 0.0327 0.1797 chryjotilc G TEM Direct Prep Method R I ?0 o 04 Bldg (A) 0929-A? 516 .100 0.0074 8.0 l.O 9,0 10.0 89.7 0.0074 0.0670 ctvycotilc H M TEM Direct Prep Method O o ■n H O 05** Tunier-TRL-0929-Al .025 720 •—a S r> in TEM Indirect Prep Method M a 06** Bldg (A) 0929-PI .025 480 £ O M ?0 S TEM Indirect Prep Method )• a H M 07** Bldg (A) 0929.P2 .025 470 V > TEM Indirect Prep Method S o 08“ Bldg (A) 0929-A2 .025 516 TEM Indirect Prep Method to

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NYC-WTC_000174997

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NYC-WTC_000174997Source: NYC Law Department, mirrored locally

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