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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_000100714
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NYC 9/11 Public Portal Document

4/15/03 PASC - Certificate of Analysis Page 3 of 9

4th 5th 5th - 5th Client ID: Floor-03 Floor-01 Floor-02 Floor-03 Lab No.: 013662 03 013663 03 013664 03 013665 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg <1.5 <1.4 <1.4 <2.1 Total Pentachlorodibenzofurans <3.2 <2.0 1.9 <1.8 Total Hexachlorodibenzofurans <1.2 <1.1 <1.4 <1.3 Total Heptachlorodibenzofurans <2.4 <1.9 <1.5 <2.1 Octachlorodibenzofuran 2.7 <2.0 <2.0 3.5 Total Tetrachlorodibenzo-p-dioxins <2.3 <1.4 <1.7 2.5 Total Pentachlorodibenzo-p-dioxins <3.3 . <1.5 <1.7 <2.0 Total Hexachlorodibenzo-p-dioxins <2.3 <1.5 <3.8 <1.9 Total Heptachlorodibenzo-p-dioxins 1.9 2.4 <3.0 11 Octachlorodibenzo-p-dioxin 13 7.0 6.6 62 Internal Recoveries 2,3,7,8-T4CDF-13C12 75 77 67 75 2,3,7,8-T4CDD-13C12 83 84 77 81 1,2,3,7,8-P5CDF-13C12 79 79 71 75 1,2,3,7,8-P5CDD-13C12 88 85 78 79 1,2,3,4,7,8-H6CDF-13C12 98 107 90 93 1,2,3,6,7,8-H6CDD-13C12 96 102 88 93 1,2,3,4,6,7,8-H7CDF-13C12 101 105 92 89 1,2,3,4,6,7,8-H7CDD-13C12 105 106 95 90 OCDD-13C12 92 89 82 74

2,3,7,8-C14-Dibenzofuran (DB5) 'pg <1.5 <1.4 <1.4 '<2.1 2,3,7,8-C14-Dibenzo-p-dioxin <2.3 <1.4 <1.7 <2.1 1,2,3,7,8-C15-Dibenzofuran <3.1 <2.0 <1.3 <1.7 2,3,4,7,8-CI5-Dibenzofuran <3.2 <2.0 1.9 <1.8 1,2,3,7,8-C15-Dibenzo-p-dioxin <3.3 <1.5 <1.7 <2.0 1,2,3,4,7,8-C16-Dibenzofuran <1.1 <1.0 <1.3 <1.2 1,2,3,6,7,8-C16-Dibenzofuran <1.1 <1.0 <1.3 <1.2 2,3,4,6,7,8-C16-Dibenzofuran <1.3 <1.2 <1.5' <1.4 1,2,3,7,8,9-C16-Dibenzofuran <1.4 <1.3 <1.7 <1.5 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <1.8 <1.5 <1.6 <1.9 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.8 <1.5 <1.6 <1.9 1,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.7 <1.4 <1.5 <1.8 1,2,3,4,6,7,8-C17-Dibenzofuran <2.1 <1.7 <1.5 <2.1 1,2,3,4,7,8,9-C17-Dibenzofuran <1.4 <2.2 <1.4 <1.5 1,2,3,4,6,7,8-CI7-Dibenzo-p-dioxin <2.6 2.4 <3.0 7.0 1,2,3,4,6,7,8,9-C18-Dibenzofuran 2.7 <2.0 <2.0 3.5 1,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 13 7.0 6.6 62

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

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

NYC-WTC 000100714

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NYC-WTC_000100714Source: NYC Law Department, mirrored locally

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