Law Department notice on WTC document preservation, Oct 2001

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o o Summary of Mercury Vapor Results Using the Lumex® Vapor Analyzer^ i 1^ co

■D o c o CT o WTC Residential Confirmation Cleaning Study - Statistics by Area Type o' cn Std Med "0 o Area n mean std skew cv var max P99 P95 P90 Q3 QI P5 min S-W® P S-W” o err ian 03

Apt2A 16 s 79.7 15.9 i -1.42 ; 0.20 i 252.8 4.0 102 i 102 U02 ; 99 89 80 72.5 34 34 0.89 0.05 O o o .......... 1.......... 1....... c Apt2B I 11 ; 49.5 6.6 i 0.81 i 0.13 43.7 2.0 62 i 62 62 59 55 47 45 42 42 0.91 0.25 3 o 3

Apt 3C 13 33.5 14.6 i 0.88 ; 0.44 213.4 i 4.1 67 I 67 49 42 35 22 15 15 0.93 0.31

Apt 3D I 10 S 22.8 13.9 I 1.35 i 0.61 193.5 4.4 50 50 j 50 ; 47.5 27 17 14 10 10 0.80 0.02 4I--- ... . 20 i 70.1 Apt 4A 41.9 2.35 ; 0.60 | 1753.9 : 9.4 210 s 210 i 177 ; 125.5 69.5 : 59.5 52 28.5 15 : 0.72 < 0.00

Apt 4B : 11 ; 34.8 25.7 ! 2.97 ; 0.74 661.6 7.8 110 ; 110 : 110 : 40 34 27 21 20 20 0.57 < 0.00 I.. i... Apt4C i 11 25.9 14.8 1 1.35 : 0.57 218.1 4.5 60 i 60 ; 60 ; 41 34 20 15 11 11 i 0.87 0.08

Apt 4D 10 i 24.4 8.2 i -0.02 ; 0.34 67.4 2.6 35 i 35 i 35 ; 34.5 30 26 16 15 15 0.85 0.05

Apt 5A i 12 i 64.6 20.0 1.00 ; 0.31 401.2 5.8 104 U04 i 104 i 98 75.5 : 58.5 : 49.5 40 40 : 0.89 0.12

AptSC 10 > 32.3 41.6 3.08 1.29 \ 1733.3 13.2 150 j 150 ; 150 i 88 23 ; 20.5 : 19 11 11 : 0.47 i < 0.00

Apt 5D 7 19.9 38.0 2.64 ; 1.91 I 1445.1 14.4 106 i 106 H06 i 106 7 6 4 3 3 : 0.49 : < 0.00

1800 Mattress 7 I 53.0 10.3 i -0.01 i 0.19 106.3 3.9 69 69 i 69 ; 69 59 53 46 37 37 0.99 > 0.99 Office Chiropractor 0.58 15 i 114.9 27.5 I 0.59 ; 0.24 i 756.8 7.1 179 i 179 ? 179 i 144 130 114 91 77 77 ; 0.95 Office......... Common 8 5 66.4 66.1 i 1.15 ; 1.00 S 4371.4 i 23.4 180 ; 180 : 180 : 180 : 113.5 36 24 4 4 0.82 0.04 Areas' Outdoor 2 § 35.0 29.7 0.85 882.0 i 21.0 56 56 i 56 ; 56 56 35 14 14 14 __________ L__J_____ i_____ i_ “Shapiro-Wilk test statistic for normality ‘Probability that the data come from a normal distribution 'Common Areas: lobbies, hallways, trash compactor room

’This information was provided by Dr. Clyde Johnson, Assistant Professor of Environmental Sciences at Medgar Evers College (City University of New York).

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