NYC-WTC_000199812

z ■< z o o g 1^ TABLE 21. SUMMARY OF RESULTS OF TRANSMISSION ELECTRON MICROSCOPY ANALYSES ■D o FOR ASBESTOS IN DUST AND DEBRIS c o CT o o' CD CD ■D CO 250 SOUTH END AVENUE, NEW YORK CITY o tn 3. tAi 03

FIBERS AND BUNDLES LONGER THAN 5 MICROMETERS o o o c ■BS 3 CD Concentration O Approximate Number of of Dispersal Volume Analytical Collection Type of Asbestos Asbestos Sample Volume Filtered Sensitivity Area Asbestos Fibers Fibers mL mL fibers/cm^ cm^ Detected on Surface fibers/cm^

Sample 250SEA-10D-D1, 9/18/01 Chrysotile 5 21000 Apartment lOD, Bedroom 111 100 1.0 4230 Amphibole 0 <13000 Top of Cupboard with Glass Doors (A) Debris Collected by Toothbrush Total 5 21000

Sample 250SEA-10D-D1, 9/18/01 Chrysotile 8 19000 Apartment lOD, Bedroom 1677 500 0.3 2400 Amphibole 0 <7200 Top of Cupboard with Glass Doors (B) Follow-up Wipe Sample Total 8 19000

Sample 250SEA-10D-D2, 9/18/01 Chrysotile 10 18000 Apartment lOD, Living Room 870 100 0.3 1830 Amphibole 0 <5500 High Boy Side Table (A) Debris Collected by Toothbrush Total 10 18000

Sample 250SEA-10D-D2,9/18/01 Chrysotile 9 28000 o Apartment lOD, Living Room 2523 500 0.3 3160 Amphibole 0 <9500 H K High Boy Side Table I (B) Follow-up Wipe Sample Total 9 28000 S o o o I o o

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