Chain of custody form, 90 Church Street, Nov 2001

NYC 9/11 Public Portal Document

NOV 06 2001 4:03 PM FR PHILIP ANALYTICAL05 332 9169 TO 121263180bb t'.ediev

11/6/2001 • PASC - Certificate ofAnalysis page 2 of 3

• Method Blank % Recovery D D Client ID: Blank Spike 10-05-D 11-09-D Lab No.: 067368 01 067368 01 067368 02 067369 01 067370 01 Date Sampled: 26.Oct-2001 26.Oct-2001 26-Oct-2002 26-Oct-2001 26-Oct-2001 Component MDL Units

Total Tetrachlorodibenzofurans pg/g <0.21 130 - 16000 39000 Total Pentachtorodibcnzofurans <0.46 800 - 8700 t 9000 TotalHexachlorodibenzo£urans 0.27 1200 - 4000 6100 Total Heptachlorodibcnzofurans 0.32 630 - 550 430 Octachlorodibcnzofuran 1.3 540 - 20000 5000 Total Tetrachlorodibenzo-p-dioxins <0.23 140 - 26000 72000 Total Pentachlorodibenzo-p-dioxins <0.23 300 - 5200 12000 Total Hexachlorodibenzo-p-dioxins <0.87 930 - 5200 10000 Total Heptachlorodibenzo-p-dioxins <0.30 320 - 1300 2200 Octachlorodibcnzo-p-dioxin 0.70 610 - 1800 2200 Internal Recoveries 2,3,7,8-T4CDF-13C12 75 75 75 64 71 2,3,7,8-T4CDD-13C12 84 77 77 69 73 1,2,3,7,8-PSCDF-13C12 63 66 66 57 61 1,2,3,7,8-P5CDD-13C12 98 100 100 83 90 1,2,3,4,7,8-H6CDF-13C12 75 77 77 61 62 1,2,3,6,7,8-H6CDD-13C12 92 89 89 72 71 1,2,3,4,6,7,8.H7CDF-13C12 88 82 82 68 71 l,2,3,4,6,7,8-H7CDD-13C12 104 100 100 76 75 OCDD-13C12 118 115 115 88 92

2,3,7.S-C14-Dibcnzofuran (DBS) pg/g • 2,3,7,8-C14-Dibenzo-p-dioxin 1,2,3,7,8-CIS-Dibenzofuran " <0.21 <0.23 <0.45 130 140 370 100 104 115 2500 52 490 5900 120 780 2,3,4,7,8-C15-Dibcnzofutan " <0.48 430 131 700 1400 1.2,3,7,8-C15-Dibenzo-p-dioxin " <0.23 300 92 100 220 l,2,3,4,7,S-C16-Dibcnzofuran " <0.27 300 93 740 1100 l,2,3,6,7,8-Cl6-Dibenzofuran 0.24 310 94 310 410 2,3,4,6,7,8-C16-Dibenzofuran <0.21 330 101 230 370 1,2,3,7,8,9-C16-Dibenzofuran <0.23 280 86 71 100 1,2,3,4,7,8-C16-Dibenzo-p-dioxin " <0.24 300 92 71 140 l,2,3,6,7,8-C16-Dibenzap-dioxin 0 40.25 330 101 130 230 1,2,3,7,8,9.C16-Dibenzo-p-dioxin <0.23 300 93 180 350 l,2,3,4,6,7,8-CI7-Dibenzofuran <0.29 310 94 <890 <980 1.2.3,4,7,8,9-C17-Dibcnzofuran <0.28 330 103 360 230 1,2,3,4,6,7,8-CI7-Dibenzo-p-dioxin <0.30 320 98 570 980 l,2,3,4,6,7,8,9-C18-Dibenzofuran 1.3 540 84 20000 5000 1,2,3,4,6,7,8,9-CIS-Dibenzo-p-dioxin 0.70 610 94 1800 2200 Dilution Factor . 1.0 1.0 - 10 10 2,3,7,8-TCDF (D8225) pg/g Pending - Pending Pending Internal Recoveries 2,3,7,8-TCDF-13C12 Pending - Pending Pcnding

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Client:Philip Analytical Services Inc Project:Misc.

NYC-WTC 000124899