NYC-WTC_000199812

z ■< z ■<

o o co g I o “0 o c o CT o TABLE 6. SUMMARY OF RESULTS OF TRANSMISSION ELECTRON MICROSCOPY ANALYSES o' CD CD FOR AIRBORNE ASBESTOS "0 o CO Ca3 CD 9L 45 WARREN STREET, NEW YORK CITY O o o c STRUCTURES GREATER THAN 0.5 MICROMETER 3 CD 3 sass

Structure Concentration, Structures/mL Structures Volume Number Sample Fiber per of Air of Description Type 95% Confidence Analytical Square Sampled Structures Mean * Interval Sensitivity Millimeter Liters Counted

Sample 45WAR-2-A1 Chrysotile 0.10 0.075 - 0.14 0.00209 316 1190 49 9/18/01 Amphibole ND 0 - 0.007 0.00209 0 1190 0 2nd Floor Total 0.10 0.075 - 0.14 0.00209 316 1190 49 Living Room Sample 45WAR-2-A2 Chrysotile 0.12 0.093 - 0.16 0.00212 376 1176 58 9/18/01 Amphibole ND 0 - 0.007 0.00212 0 1176 0 2nd Floor Total 0.12 0.093 - 0.16 0.00212 376 1176 58 Living Room Sample 45WAR-2-A3 43 Chrysotile 0.085 0.061 - 0.12 0.00197 . 279 1269 9/18/01 Amphibole ND 0 - 0.006 0.00197 0 1269 0 2nd Floor Total 0.085 0.061 - 0.12 0.00197 279 1269 43 Master Bedroom

* No mean value is reported when fewer than 4 countable structures were detected in the portion of sample examined Q ND No Countable Structures Detected H NSS Not Statistically Significant (1 to 3 countable structures detected)

I—i s o I—i o o I o o CD

CO O

o on