NYC-WTC_000199812

z z o o i 1^ TABLE 15- SUMMARY OF RESULTS OF TRANSMISSION ELECTRON MICROSCOPY ANALYSES co

■D o c o FOR AMBMNMWiSTOS CT o o' CD CD "0 00 250 SOUTH END AVENUE, NEW YORK CITY o cn 03

FIBERS AND BUNDLES LONGER THAN 5 MICROMETERS O o =^=== o c Fiber Concentration, Fibers/mL 3 Fibers Volume Number CD 3 Sample Fiber per of Air of Description Type 95% Confidence Analytical Square Sampled Fibers Mean * Interval Sensitivity Millimeter Liters Counted

Sample 250SEA-10D-A1 Chrysotile 0.16 - 0.28 0.00348 611 1092 62 9/18/01 Amphibole ND 0 - 0.011 0.00348 0 1092 0 Apartment lOD Total G.22< 0.16 - 0.28 0.00348 611 1092 62 Den Sample 250SEA-10D-A2 Chrysotile ^.23- 0.17 - 0.30 0.00376 597 1001 61 9/18/01 Amphibole ND 0 - 0.012 0.00376 0 1001 0 Apartment 1OD Total 0.17 - 0.30 0.00376 597 1001 61 Den Sample 250SEA-10D-A3 Chrysotile 0.16 0.12 - 0.22 0.00264 402 944 62 9/18/01 Amphibole ND 0 - 0.008 0.00264 0 944 0 Apartment lOD Total 0.16 0.12 - 0.22 0.00264 402 944 62 Living Room Sample 250SEA-10D-A4 Chrysotile 0.23 - 0.35 0.00251 746 987 9/18/01 Amphibole ND 0 - 0.008 0.00251 0 987 0 Apartment 1 OD Total 0129* 0.23 - 0.35 0.00251 746 987 11^ Living Room

o Sample 250SEA-10D-A5 Chrysotile 0:28- 0.21 - 0.36 0.00407 658 915 68 H 9/18/01 K Amphibole NSS 0 - 0.030 0.00407 19.3 915 2 I Apartment lOD Total 0.2? 0.22 - 0.36 0.00407 677 915 70 s o I—i Bedroom —........... ...... o * - No mean value is reported when fewer than 4 countable fibers were detected in the portion of sample examined o Io ND - No Countable Fibers Detected o NSS - Not Statistically Significant (1 to 3 countable fibers detected) co o

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