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I o TABLE 14. SUMMARY OF RESULTS OF TRANSMISSION ELECTRON MICROSCOPY ANALYSES ■D c o CT o FOR AIRBORNE ASBESTOS co o' co ■D 00 250 SOUTH END AVENUE, NEW YORK CITY o 3. 03

STRUCTURES GREATER THAN 0.5 MICROMETER - ESTIMATES BASED ON I GRID OPENING ONLY o o o c 3 Structure Concentration, Structures/mL Structures Volume Number CD

Sample Fiber per of Air of Description Type 95% Confidence Analytical Square Sampled Structures Mean * Interval Sensitivity Millimeter Liters Counted

Sample 250SEA-10D-A1 Chrysotile 3.74 3.07 - 4.53 0.0347 10620 1092 9/18/01 1092 0 Amphibole ND 0 - 0.11 0.0347 0 Apartment lOD Total 3.74 3.07 - 4.53 0.0347 10620 1092 Wk- Den Sample 250SEA-10D-A2 Chrysotile 3.01 2.39 - 3.75 0.0372 7832 1001 81 9/18/01 1001 0 Amphibole ND 0 - 0.12 0.0372 0 cr\ Apartment lOD Total 3.01 2.39 - 3.75 0.0372 7832 1001 81 Den Sample 250SEA-10D-A3 944 66 Chrysotile 2.56 1.98 - 3.26 0.0388 6277 9/18/01 944 0 Amphibole ND 0 - 0.12 0.0388 0 Apartment lOD 944 66 Total 2.56 1.98 - 3.26 0.0388 6277 Living Room Sample 250SEA-10D-A4 987 65 Chrysotile 2.45 1.89 - 3.13 0.0377 6285 9/18/01 987 0 Amphibole ND 0 - 0.12 0.0377 0 Apartment lOD 987 65 Total 2.45 1.89 - 3.13 0.0377 6285 Living Room o Sample 250SEA-10D-A5 H Chrysotile 3.01 2.36 - 3.78 0.0407 7155 915 74 9/18/01 Amphibole NSS 0 - 0.23 0.0407 97 915 1 Apartment lOD I—i Total 3.05 2.39 - 3.83 0.0407 7252 915 75 s Bedroom o I—i o * o No mean value is reported when fewer than 4 countable structures were detected in the portion of sample examined I o o ND No Countable Structures Detected NSS Not Statistically Significant (1 to 3 countable structures detected) co o

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