NYC-WTC_000199812

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I i o ■D c o CT o o TABLE 10. SUMMARY OF RESULTS OF TRANSMISSION ELECTRON MICROSCOPY ANALYSES o' co FOR AIRBORNE ASBESTOS ■D o CD <» 3. o 03 CD 45 WARREN STREET, NEW YORK CITY o o o c STRUCTURES GREATER THAN 0.5 MICROMETER 3 CD

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-5-A1 9/18/01 Chrysotile 0.046 0.028 - 0.069 0.00207 142 1201 Amphibole ND 0 - 0.007 0.00207 0 1201 0 5th Floor Total 0.046 0.028 - 0.069 0.00207 142 1201 Living Room KJ Sample 45WAR-5-A2 Chrysotile 0.046 0.028 - 0.071 0.00221 141 1170 9/18/01 Amphibole ND 0 - 0.007 0.00221 0 1170 0 5th Floor Dining Room Total 0.046 0.028 - 0.071 0.00221 141 1170 a. Sample 45WAR-5-A3 Chrysotile 0.051 0.033 - 0.076 0.00204 162 1226 IS. 9/18/01 Sth Floor Amphibole ND 0 - 0.007 0.00204 0 1226 0 Total 0.051 0.033 - 0.076 0.00204 162 1226 Bedroom Level

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

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