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Document / 271 pages

Chain of custody form, 90 Church Street, Nov 2001

Machine-extracted title · confidence 100%

Chain of custody document for samples from 90 Church Street dated November 14, 2001.

NYC-WTC_000124631–000124901

Folder label: “74-90 CHURCH ST 1001230, 86/1

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Scanned page image, NYC-WTC_000124794
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NYC 9/11 Public Portal Document

LABORATORY CONTROL SAMPLE DATA REPORT •

Trace Level Organic Compounds

Client Lot #...: G13260165 Work Order #...: EMWOKIAC Matrix.......... WIPE LCS Lot -Sample#: G1J260000-507 Prep Date......: 10/26/01 Analysis Date..: 10/27/01 Prep Batch #...: 1299507 Dilution Factor: 1

SPIKE MEASURED PERCENT PARAMETER AMOUNT AMOUNT UNITS RECOVERY METHOD 2,3,7,8-TODD 200 216 pg 108 SW846 8290 1,2,3,7,8-PeCDD 1000 962 pg 96 SW846 8290 1,2,3,4,7,8-RxCDD 1000 926 pg 93 SW846 8290 1,2,3,6,7,8-HxCDD 1000 1050 pg 105 SW846 8290 1,2,3,7,8,9-UxCOD 1000 1120 pg 112 SW846 8290 1,2,3,4,6,7,8-BpCDD 1000 1070 pg 107 SW846 8290 OCDD 2000 2240 pg 112 SW846 8290 2,3,7,8-TCDF 200 201 pg 101 SW846 8290 1,2,3,7,8-PeCDF 1000 1110 pg 111 SW846 8290 2,3,4,7, 8-PeCDF 1000 1060 pg 106 SW846 8290 1,2,3,4, 7, 8-HxcDF 1000 1100 pg 110 SW846 8290 1,2,3,6,7,8-HxeoF 1000 3.230 pg 123 SW846 8290 2,3,4,6,7,8-HxcDF 1000 1260 pg 126 SW846 8290 1,2,3,7,8,9-HxcDF 1000 1380' pg 138 SW846 8290 1,2,3,4,6,7,8-HpCDF 1000 1060 pg 106 811846 8290 1,2,3,4,7,8,9-HpcDF 1000 1140 pg 114 SN846 8290 OCDF 2000 2190 pg 109 SW846 8290

PERCENT RECOVERY INTERNAL STANDARD RECOVERY LIMITS 13C-2,3,7,8 -TODD 82 (40 - 135) 13C-1,2,3,7,8-PeCDD 86 (40 - 135) 13C-1,2,3,6,7,8-HxCDD 75 (40 - 135) 13C-1,2,3,4,6,7,8-BpCDD 90 (40 - 135) 13C-OCDD 90 (40 - 135) 13C-2,3,7,8-TCDF 80 (40 - 135) 13C-1,2,3,7,8-PeCDF 77 (40 - 135) 13C-1,2,3,4,7,8-HcCDF 60 (40 - 135) 13C-1,2,$,4,6,7,8-HpCDF• 84 (40 - 135)

NOTE (S) : Calculations are performed before rounding to avoid round-off errors in calculated results. Bold print denotes control parameters

G1J260165 STL - Sacramento (916)373- 5600 35 of 36

NYC-WTC 000124794

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NYC-WTC_000124794Source: NYC Law Department, mirrored locally

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