NYC-WTC_000232785

NYC 9/11 Public Portal Document

LDDDCD"DTDiDmDeDsC aNDeDwa □RnoDmDaDnD.nBDoDindn □lDtDaDlDiDcD"DlD4DPDADSD

6th 6th 6th Client ID: Floor-01 Floor-02 Floor-03 Lab No.: 013666 03 013667 03 013668 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg 40 <1.3 <1.7 Total PenLachlorodibenzofurans 18 <1.9 <2.0 Total Hexachlorodibenzofurans 2.1 <1.1 <1.1 Total Heptaehlorodibenzofurans <3.2 <1.4 Octachlorodibenzofuran 15 <3.4 <2.0 Total Tetrachlorodibenzo-p-dioxins 6.1 <1.8 <1.3 Total Pentachlorodibenzo-p-dioxins <1.4 <1.6 <1.8 Total Hexachlorodibenzo-p-dioxins <1.4 <1.2 <4.4 Total Heptachlorodibenzo-p-dioxins 2.8 <2.1 2.6 Octachlorodibenzo-p-dioxin 8.9 5.5 5.2 Internal Recoveries % 2,3,7,8-T4CDF-13C12 76 72 72 2,3,7,8-T4CDD-13C12 81 78 82 1,2,3,7.8-P5CDF-13C12 77 79 79 1,2,3,7,8-P5CDD-13C12 86 84 87 1,2,3,4.7,8-H6CDF-13C12 94 92 102 1,2,3,6.7,8-H6CDD-13C12 92 92 101 1,2,3,4.6,7,8-H7CDF-13C12 92 94 104 1,2,3,4.6,7,8-H7CDD-13C12 95 100 107 OCDD-13C12 78 87 90

2,3,7,8-C14-Dibenzofuran (DBS) pg 38 <1.7 2,3,7,8-C14-Dibenzo-p-dioxin 6.1 <1.8 <1.3 1,2,3,7.8-C15-Dibenzofuran 5.6 <1.8 <2.0 2,3,4,7,8-C15-Dibenzofuran 12 <1.9 <2.1 l,2,3,7-8-C15-Dibenzo-p-dioxin <1.4 <1.6 <1.8 1,2,3,4.7,8-C16-Dibe.nzofuran 2.1 <0.98 <1.0 1,2,3,6,7,8-C16-Dibenzofuran <0.97 <0.99 2,3,4,6,7,8-C16-Dibenzofuran <1.2 <1.2 1,2,3,7,8,9-C16-Dibenzofuran <1.6 <1.2 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <1.5 <1.2 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.2 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.4 <1.2 <1.4 1,2,3,4,6,7,8-C17-Dibenzofuran <3.2 <1.2 1,2,3,4.7,8,9-C17-Dibenzofuran <1.5 <1.6 <1.7 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 2.8 <2.1 2.6 1,2,3,4,6,7,8,9-C18-Dibenzofuran 15 <3.4 <2.0 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 8.9 5.5 5.2

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

RDCDlDiDeDnDtD:DPDhDiDlDiDpD □ADnDaDlDyDtDiDcDaDlD □SDeDrDvDilcDeDsD DIDnCcD □ PDrDoDjDeEcDtD:DJDLDCD DEDna

CITY_21MC100_009480068

NYC-WTC_000232793