NYC-WTC_000226928

NYC 9/11 Public Portal Document

FEB-10-02 11:13 FROH-PACE ANALYTICAL 612-6D7-6444 T-543 P. 04/05 F-8B6 1700 EIrn Street - Suite 200 Minneapolis, MN 55414

'aceAnalvticaC Method 8290 Analysis Results Tel; 612-607-1700

Client-ATC Client's Sample ID ATC-0123-STY-DX3 pi "T; r v'V; Lab Sample ID 103286290 L- Li' i..'; Li Filename U20212B_10 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA . Collected 01/23/2002 ICAL Date 01/25/2002 Received 01/25/2002 CCal Filenamefs) U20212A_11 & U20212B_15 Extracted 02/08/2002 Method Blank ID BLANK-1457 Analyzed 02/13/2002 07:01 Native Cone EMPC URL Internal ng‘s Percent isomers ng/m2 ng/m2 ng/m2 Standards, Added Recovery 2.3.7,8-TCDF ---- 0.0031 0.0025 lA 2,3,7,8-TCDF-13C 2.00 89 Total TCDF 0.061 0.0020 2.3,7,8-TCDD-13C 2.00 97 1,2.3,7.8-PeCDF-13C 2.00 96 2,3,7,8-TCDD ND 0.0046 A, 2,3,4,7,8-PeCDF-13C 2.00 92 Total TCDD 0.077 0.0020 1,2.3,7,8-PeCDD-13C 2.00 113 1,2,3,4,7,8-HXCDF-13C 2.00 113 1 ,2,3.7,8-PbCDF ND 0.0100 1,2,3,e,7.8-HxCDF-13C 2.00 90 2,3,4,7.8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 98 Total PeCDF 0.027 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 98 1.2,3.4.7.8-HxCDD-l3C 2.00 122 1,2,3,7,8-PeCDD ND 0.0100 1.2,3,6,7.8-HxCDD-13C 2.00 112 Total PeCDD 0.079 0.0100 1,2,3,4,6,7,8“HpCDF-13C 2.00 112 1,2,3i4.7,8,9-HpCDF-13C 2.00 91 1,2.3,4,7,8-HxCDF ND 0.0100 1,2,3,4.6,7,8-HpCDD-13C 2.00 100 1,2,3,6,7.8-HxCDF ND 0.0100 OCDD-13C 4.00 74 2,3,4,6,7,8-HxCDF ND — 0.0100 1,2,3,7,8.9-HxCDF ND 0.0100 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF ND 0.0100 1.2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.0100 2,3.7.8-TCDD-37CI4 0.20 78 1,2,3,6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD 0.074 0.0100 1,2,3,4,6,7,8-HpCDF 0,020 0.0100 J Total 2.3.7,8-TCDD 1,2,3,4,7.8,9-HpCDF ND 0.0100 Equivalence: 0.00072 ng/m2 Total HpCDF 0.020 0.0100 J (Using ITE Factors)

1.2,3,4.6,7.8-HpCDD 0.033 0.0100 J Total HpCDD 0.056 0.0100 J OCDF ND 0.0200 OCDD 0.190 0.0200 LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,3-sub3t[tiJted isomers) I = Interference EMPC a Estimated Maximum Possible Concentration E if PCDE Interference A = Detection Limit based on signal-to-noise measurement S = Saturated signal J = Concentration detected is below the calibration range ND = Not Detected B = Less than 10 times higher than method blank level NA = Not Applicable P = Recovery Outside of target range NC = Not Calculated Nn = Value obtained from additional analysis * = See Discussion RepOrlNo.... 02-1053443

REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Sendees, Inc.

CITY_21MC1OO_OO2896359

NYC-WTC_000226930