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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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Scanned page image, NYC-WTC_000100715
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NYC 9/11 Public Portal Document

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

6th 6th 6th 7th Client ID: Floor-01 Floor-02 Floor-03 Floor-01 Lab No.: 013666 03 013667 03 013668 03 013669 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg 40 <1.3 <1.7 <3.8 Total Pentachlorodibenzofurans 18 <1.9 <2.0 <4.9 Total Hexachlorodibenzofurans 2.1 <1.1 <1.1 <1.7 Total Heptachlorodibenzofurans <3.2 <1.4 <1.5 <2.1 Octachlorodibenzofuran I5 <3.4 <2.0 3.9 Total Tetrachlorodibenzo-p-dioxins 6.1 <1.8 <1.3 10.0 Total Pentachlorodibenzo-p-dioxins <1.4 <1.6 <1.8 <3.5 Total Hexachlorodibenzo-p-dioxins <1.4 <1.2 <4.4 <5.5 Total Heptachlorodibenzo-p-dioxins '2.8 <2.1 2.6 6.7 Octachlorodibenzo-p-dioxin 8.9 5.5 5.2 20 Internal Recoveries % 2,3,7,8-T4CDF-13C12 76 72 72 62 2,3,7,8-T4CDD-13C12 81 78 82 69 1,2,3,7,8-P5CDF-13C12 77 79 79 70 1,2,3,7,8-P5CDD-13C12 86 84 87' 78 1,2,3,4,7,8-H6CDF-13C12 94 92 102 90 1,2,3,6,7,8-H6CDD-13C12 92 92 101 90 1,2,3,4,6,7,8-H7CDF-13C12 92 94 104 90 1,2,3,4,6,7,8-H7CDD-13C12 95 100 107 91 OCDD-13C12 78 87 90 74

2,3,7,8-C14-Dibenzofuran (DB5) pg 38 <1.3 <1.7 <3.8 2,3,7,8-Cl4-Dibenzo-p-dioxin 6.1 <1.8 <1.3 <4.2 1,2,3,7,8-C15-Dibenzofuran 5.6 <1.8 <2.0 <4.9 2,3,4,7,8-C15-Dibenzofuran 12 <1.9 <2.1 <5.0 1,2,3,7,8-C15-Dibenzo-p-dioxin <1.4 _ <1.6 <1.8 <3.5 1,2,3,4,7,8-C16-Dibenzofuran 2.1 <0.98 <1.0 <1.5 1,2,3,6,7,8-C16-Dibenzofuran <1.3 <0.97 <0.99 <1.5 2,3,4,6,7,8-C16-Dibenzofuran <1.5 <1.2 <1.2 <1.8 1,2,3,7,8,9-C16-Dibenzofuran <1.6 <1.2 <1.3 <1.9 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <1.5 <1.2 <1.5 <2.1 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.5 <1.2 <1.5 <2.1 1,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.4 <1.2 <1.4 <2.0 1,2,3,4,6,7,8-C17-Dibenzofuran <3.2 <1.2 <1.3 <1.9 1,2,3,4,7,8,9-C17-Dibenzofuran <1.5 <1.6 <1.7 <1.7 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 2.8 <2.1 2.6 4.2 --1,2,3,4,6,7,8,9-C18-Dibenzofuran 15 <3.4 <2.0 3.9 1,2,3,4,6,7,8,9-CI8-Dibenzo-p-dioxin 8.9 5.5 5.2 20

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

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

NYC-WTC 000100715

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NYC-WTC_000100715Source: NYC Law Department, mirrored locally

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