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Chain of Custody: DEP Cleanup Samples, October 24, 2002

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Chain of custody document from PSC Analytical Services regarding the receipt and analysis of samples for the DEP cleanup project.

NYC-WTC_000130104–000130402
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NYC 9/11 Public Portal Document

10/23/2002 PASC - Certificate ofAnalysis Page 3 of 5

R02090951 R02090951 R02090951 R02090951 R02090951 Client ID: 08A 09A I OA II A 12A Lab No.: 060274 02 060275 02 060276 02 060277 02 060278 02 Date Sampled: I2-Sep-2002 12-Sep-2002 12-Sep-2002 I2-Sep-2002 I2-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg <1.7 4.8 970 180 170 Total Pentachlorodibenzofurans <1.7 <9.5 450 110 78 Total Hexachlorodibenzofurans 1.8 <4.1 250 45 45 Total Heptachlorodibenzofurans <3.8 <6.3 35 II II Octachlorodibenzofuran <2.5 <5.3 58 12 16 Total Tetachlorodibenzo-p-dioxins <2.0 10 1700 230 170 Total Pentachlorodibenzo-p-dioxins <2.6 <5.9 290 130 56 Total Hexachlorodibenzo-p-dioxins 1.9 <16 260 14 17 Total Heptachlorodibenzo-p-dioxins 4.2 7.7 190 90 80 Octachlorodibenzo-p-dioxin 12 46 730 350 320 Internal Recoveries 0/0

2.3,7,8-T4CDF-I3C12 71 81 93 87 92 2,3,7.8-T4CDD-13Cl2 83 76 80 80 85 1,2,3,7,8-P5CDF-13C12 70 74 88 82 84 1,2,3,7,8-P5CDD-I3C12 79 79 95 88 87 1,2,3,4,7,8-H6CDF-I3C12 90 79 95 90 85 1,2.3.6,7.8-H6CDD-I3C12 94 82 93 93 88 1,2,3.4,6,7,8-H7CDF-13C12 92 77 85 86 80 1,2,3,4,6,7,8-H7CDD-13012 97 78 88 91 85 OCDD-I3Cl2 114 68 79 86 77

2,3,7.8-014-Dibenzofuran (DBS) pg <1.7 <4.8 140 28 21 2.3,7,8-CI4-Dibenzo-p-dioxin <2.0 <5.9 <10 <3.4 <3.3

• 1,2,3,7,8-CIS-Dibenzofuran 2,3,4,7,8-CI5-Dibenzofuran 1,2,3,7,8-CI5-Dibenzo-p-dioxin <1.6 <1.8 <2.6 <9.2 <9.8 <5.9 <12 31 <4.6 <2.2 13 <3.5 <6.1 8.0 <3.9 1,2,3,4,7,8-C16-Dibenzofuran 1.6 <4.1 50 15 II 1.2,3.6,7,8-C16-Dibenzofuran <0.86 <3.4 19 <7.0 <5.3 2.3.4.6.7.8-CI6-Dibenzofuran <1.0 <4.4 22 <7.2 7.8 1,2.3,7,8,9-C16-Dibenzofuran <1.2 <4.8 <8.0 <3.7 <4.3 1,2.3,4,7,8-CI6-Dibenzo-p-dioxin <1.4 <20 <3.5 <4.0 <6.2 1.2.3,6.7,8-C16-Dibenzo-p-dioxin <1.4 <14 9.7 4.4 <4.4 1,2.3.7,8,9-C16-Dibenzo-p-dioxin " <1.3 <15 10 <5.3 <4.8 1,2.3.4,6.7.8-CI7-Dibenzofuran <3.3 <5.5 <68 <24 <23 1,2,3,4,7,8,9-C17-Dibenzofuran <4.6 <7.4 19 <8.5 <5.2 1,2,3.4,6.7,8-C17-Dibenzo-p-dioxin 4.2 7.7 100 47 40 1,2.3.4.6,7.8.9-C18-Dibenzofuran <2.5 <5.3 58 12 16 1.2.3,4.6.7,8.9-CI8-Dibenzo-p-dioxin 12 46 730 350 320

2,3,7.8-TCDF (DB225) pg <3.7 <4.8 37 <9.8 <6.7 Internal Recoveries 2,3.7,8-TCDF-I3Cl2 92 81 87 86 93

TEQ based on Nato Factors pg 0.21 0.12 42.1 11.9 8.7

Client:Philip Analytical Services Inc Project:Misc.

NYC-WTC 000130113

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NYC-WTC_000130113Source: NYC Law Department, mirrored locally

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NYC-WTC_000130052 · Box DEP Box 53

Chain of custody document from PSC Analytical Services regarding the receipt and analysis of samples for the DEP cleanup project.

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