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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 I of 5

Method Blank Blank R0209095I R0209095I Client ID: Blank 10/04 Spike# I Spike# I OI A 02A Lab No.: 060266 02 060266 02 %Recoveries 060267 02 060268 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg <3.9 1100 - <2.0 130 Total Pentachlorodibenzofurans 17 6400 - <2.2 55 Total Hexachlorodibenzofurans 52 10000 - <1.6 45 Total Heptachlorodibenzofurans 42 5100 - <2.1 46 Octachlorodibenzofuran 67 4400 - 3.5 33 Total Teirachlorodibenzo-p-dioxins 4.3 1 100 4.3 110 Total Pentachlorodibenzo-p-dioxins 12 2700 - <2.9 16 Total Hexachlorodibenzo-p-dioxins 35 7900 - <8.9 <35 Total Heptachlorodibenzo-p-dioxins 26 2600 - 3.9 88 Octachlorodibenzo-p-dioxin 65 4900 - 16 390 Internal Recoveries 0/0

2,3,7,8-T4CDF-13C12 65 70 70 82 72 2,3.7,844C1313-1302 74 84 84 79 75 1,2.3,7.8-P5CDF-13C12 43 70 70 88 61 1.2.3,7.8-P5CDD-13C12 48 76 76 105 67 1.2,3,4,7,8-H6CDF-I3C12 72 85 85 86 73 1.2.3,6.7.8-H6CDD-13C12 74 88 88 91 76 1,2,3,4,6,7,8-H7CDF-13C12 82 86 86 83 71 1,2,3.4,6,7,8-H7CDD-13C12 75 89 89 81 68 OCDD-13C12 84 108 108 94 75

2,3.7,8-CI4-Dibenzofuran (DBS) pg <3.9 1100 105 <2.0 20 2,3.7,8-CI4-Dibenzo-p-dioxin 4.3 1100 109 <2.6 <2.5

• I.2,3.7,8-C15-Dibenzofuran 2.3,4,7,8-C15-Dibenzofuran 1,2.3.7.8-CI5-Dibenzo-p-dioxin <9.6 17 12 2900 3500 2700 114 139 110 <2.1 <2.3 <2.9 4.0 <5.0 <3.6 1.2,3.4.7.8-C16-Dibenzofuran II 2400 97 <1.4 8.2 1.2.3.6.7.8-CI6-Dibenzofuran 14 2600 102 <1.4 4.5 2,3,4,6,7,8-C16-Dibenzofuran <14 2500 100 <1.7 10 1.2.3.7,8,9-CI6-Dibenzofuran 29 2500 98 <2.0 <2.5 1,2.3.4.7.8-CI6-Dibenzo-p-dioxin <9.1 2700 108 <4.6 <2.4 1,2,3,6,7,8-CI6-Dibenzo-p-dioxin 14 2600 105 <4.5 <3.4 1.2.3.7,8.9-C16-Dibenzo-p-dioxin 22 2600 102 <4.4 <2.3 1,2.3.4.6.7.8-C17-Dibenzofuran 18 2600 104 <1.8 21 1,2,3.4,7,8.9-CI7-Dibenzofuran 25 2400 97 <2.5 <3.1 1,2,3,4,6,7.8-CI7-Dibenzo-p-dioxin 26 2600 103 3.9 48 1.2.3.4.6.7,8.9-C18-Dibenzofuran 67 4400 87 3.5 33 1.2.3.4.6.7.8.9-CI8-Dibenzo-p-dioxin 65 4900 99 16 390

2,3,7,8-TCDF (DB225) pg - - 13 Internal Recoveries % 2,3.7.8-TCDF-13C12 - - - 88

TEQ based on Nato Factors pg 28.9 0.06 5.6

Client:Philip Analytical Services Inc Project:Misc.

NYC-WTC 000130111

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NYC-WTC_000130111Source: 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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