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Airborne silica analysis order form, EMSL Analytical Inc., Apr 2003

Machine-extracted title · confidence 90%

Laboratory order form for analyzing airborne crystalline silica samples collected from 114 Liberty Street.

NYC-WTC_000100712–000100721

Folder label: “114 LIBERTY STREET 1001041, 52/7502

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NYC 9/11 Public Portal Document

4/15/03 PASC - Certificate of Analysis Page 9 of 9

11th Floor Client ID: Down-03 Lab No.: 013686 03 Date Sampled: 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans Pg <2.4 Total Pentachlorodibenzofurans <3.0 Total Hexachlorodibenzofurans <1.8 Total Heptachlorodibenzofurans <2.2 Octachlorodibenzofuran 3.2 Total Tetrachlorodibenzo-p-dioxins <3.8 Total Pentachlorodibenzo-p-dioxins <2.7 Total Hexachlorodibenzo-p-dioxins <7.3 Total Heptachlorodibenzo-p-dioxins <2.5 Octachlorodibenzo-p-dioxin 12 Internal Recoveries 2,3,7,8-T4CDF-13C12 83 2,3,7,8-T4CDD-13C12 86 1,2,3,7,8-P5CDF- 13C 12 86 1,2,3,7,8-P5CDD-1 3C 96 I ,2,3,4,7,8-H6CDF-13C12 107 1,2,3,6,7,8-H6CDD-13C12 101 1,2,3,4,6,7,8-H7CDF- 13C12 101 1,2,3,4,6,7,8-H7CDD-13C12 102 OCDD-13C12 80

2,3,7,8-C14-Dibenzofuran (DB5) Pg <2.4 2,3,7,8-CI4-Dibenzo-p-dioxin <3.8 1,2,3,7,8-CI5-Dibenzofuran <2.9 2,3,4,7,8-C15-Dibenzofuran <3.0 1,2,3,7,8-CI5-Dibenzo-p-dioxin <2.7 1,2,3,4,7,8-CI6-Dibenzofuran <1.6 1,2,3,6,7,8-C16-Dibenzofuran <1.6 2,3,4,6, 7,8-CI6-Dibenzofuran <1.9 1,2,3,7,8,9-C16-Dibenzofuran <2.0 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <2.6 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.5 1,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.4 1,2,3,4,6,7,8-C17-Dibenzofuran <2.2 1,2,3,4,7,8,9-C17-Dibenzofuran <2.4 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin <2.0 1,2,3,4,6,7,8,9-CI8-Dibenzofuran 3.2 1,2,3,4,6,7,8,9-CI8-Dibenzo-p-dioxin 12

2,3,7,8-TCDF (DB225) Pg Internal Recoveries 2,3,7,8-TCDF-13C12

i

Preliminary Report Client:Philip Analytical Services Inc Project:JLC Environmental

NYC-WTC 000100720

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NYC-WTC_000100720Source: NYC Law Department, mirrored locally

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