JLC Reports folder header or index page, April 2003

NYC 9/11 Public Portal Document

• 4/3/03 PASC - Certificate of Analysis Page 4 of 8

6th 6th 7th 7th Client ID: Floor-08 Floor-09 Floor-07 Floor-08 Lab No.: 009203 03 009204 03 009205 03 009206 03 Date Sampled: 05-Mar-2003 05-Mar-2003 05-Mar-2003 05-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg 7.4 7.5 24 <2.1 Total Pentachlorodibenzofurans <3.1 10 11 <3.2 Total Hexachlorodibenzofurans 2.9 8.3 7.8 <1.7 Total Heptachlorodibenzofurans <7.0 <7.4 3.7 2.2 Octachlorodibenzofuran 10.0 11 12 7.3 Total Tetrachlorodibenzo-p-dioxins 14 27 36 3.3 Total Pentachlorodibenzo-p-dioxins 3.5 <14 26 <2.7 Total Hexachlorodibenzo-p-dioxins 3.2 14 14 2.8 Total Heptachlorodibenzo-p-dioxins 32 24 27 17 Octachlorodibenzo-p-dioxin 84 73 86 55 Internal Recoveries % 2,3,7,8-T4CDF-13C12 94 83 102 84 2,3,7,8-T4CDD-13C12 107 99 112 105 1,2,3,7,8-P5CDF-13C12 101 84 100 86 1,2,3,7,8-P5CDD-13C12 88 70 85 79 1,2,3,4,7,8-H6CDF-13C12 118 107 111 112 1,2,3,6,7,8-H6CDD-13C12 106 95 100 102 1,2,3,4,6,7,8-H7CDF-13C12 123 108 108 112 1,2,3,4,6,7,8-H7CDD-13C12 112 99 96 105 OCDD-13C12 100 88 75 95

2,3,7,8-C14-Dibenzofuran (DB5) pg <4.5 <7.5 <8.2 <2.1 2,3,7,8-CI4-Dibenzo-p-dioxin <2.5 <2.7 <2.5 <2.4 1,2,3,7,8-C15-Dibenzofuran <3.0 <3.2 <2.6 <3.2 2,3,4,7,8-C15-Dibenzofuran <3.1 <3.3 2.9 <3.3 1,2,3,7,8-C15-Dibenzo-p-dioxin <2.9 <5.1 <3.1 <2.7 l,2,3,4,7,8-CI6-Dibenzofuran <1.7 3.2 3.7 <1.5 l,2,3,6,7,8-C16-Dibenzofuran <1.7 <2.3 <1.7 <1.5 2,3,4,6,7,8-CI6-Dibenzofuran <2.0 1.9 <1.8 <1.7 1,2,3,7,8,9-C16-Dibenzofuran <2.3 <2.0 <2.1 <2.1 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <2.0 <2.4 <2.1 <1.9 1,2,3,6,7,8-CI6-Dibenzo-p-dioxin <2.3 <2.7 <2.3 <2.1 1,2,3,7,8,9-CI6-Dibenzo-p-dioxin <2.1 <2.5 <2.1 <1.9 1,2,3,4,6,7,8-Cl7-Dibenzofuran <6.2 <6.5 <6.5 <2.4 1,2,3,4,7,8,9-C17-Dibenzofuran <2.6 <3.1 <2.9 <2.2 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 16 10 11 7.5 1,2,3,4,6,7,8,9-C18-Dibenzofuran 10.0 11 12 7.3 1,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 84 73 86 55

2,3,7,8-TCDF (DB225) pg <6.1 <3.9 <5.3 <2.5 Internal Recoveries % 2,3,7,8-TCDF-13C12 83 78 86 85

Client:Philip Analytical Services Inc Project:JLC Environmental

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