Preliminary health report, World Trade Center, Oct 2001

NYC 9/11 Public Portal Document j V^iHTradeCettter^ PagelOj

Tables

Table 1. Air sample locations within two separate buildings near the World Trade Center.

Air sample #1 Building A, Loading dock Air sample #2 Building A, Loading dock near freight elevator Air sample #3 Building A, 3 '“’floor, office space east side Air sample #4 Building A, 11 "'floor, office space east side Air sample #5 Building A, 36 '"floor, office space,NE corner Air sample #6 Building B, 3 ra floor, office space Air sample #7 Building B, 3 ra floor, north staging area Air sample #8 Building B, 6 floor, office space NE corner Air sample #9 Building B, 6 tn floor, office space SW corner Air sample #10 Building B, 9 tn floor, office space NE corner Air sample #11 Building B, 9 tn floor, office space SW corner

Table 2. The particle size distribution of surface residue collected from location #6 and #10.

Size Fraction Location #6 Location #10 Analytical Comments (w/w%) ' (w/w%) « 46iP >300o:m 22% 5 Tightly compacted fiber-rich (65% v/v%) aggregates 22% 75-300ocm 37% Mainly fibrous aggregates <75a:m 32% ’ 41% « Gray powder.

1 No particles containing lead, chromium, cadmium, or mercury were observed. 2 Loosely aggregated, separable fibrous lint, primarily glass fibers. 3 Particles containing iron, copper and zinc were observed. Primarily fibrous glass & cement. 4 No particles containing chromium, cadmium, or mercury were observed. 5 No loosely aggregated, separable fibrous lint. 6 Particles containing iron, copper and lead were observed. Primarily fibrous glass & cement.

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