NYC-WTC_000182790

NYC 9/11 Public Portal Document

Pace Analytical Services, Inc. 1700 Elm Street - Suite 200 Minneapolis, MN 55414

^ace Analytical__________ Method 8290 Analysis Results Tel: 612-607-1700 Fax: 612- 607-W4

Client - ATC Client's Sample ID ATC-1114-DX-03 Lab Sample ID 103142915 Filename U11126A 06 Injected By MASS Total Amount Extracted 1 Sample Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 11/14/2001 ICAL Date 11/10/2001 Received 11/15/2001 CCai Filename(s) U11126A_01 &U11126A_15 Extracted 11/19/2001 Method Blank ID BLANK-1336 Analyzed 11/26/2001 11:59 Native Cone EMPC LRL Internal ng's Percent Isomers ng/S ng/S ng/S Standards Added Recovery 2,3,7,8-TCDF 0.0530 0.002000 2,3,7,8-TCDF-13C 2.00 69 Total TCDF 1.3000 0.002000 2,3,7,8-TCDD-13C 2.00 65 1,2,3,7,8-PeCDF-13C 2.00 68 2,3,7,8-TCDD 0.0082 0.002000 J 2,3,4,7,8-PeCDF-13C 2.00 68 Total TCDD 3.2000 0.002000 1,2,3,7,8-PeCDD-13C 2.00 68 1,2,3,4,7,8’HxCDF-13C 2.00 109 1,2,3,7,8-PeCDF 0.0540 0.010000 1,2,3,6,7,8-HxCDF-13C 2.00 59 2.3.4,7,8-PeCDF 0.0590 0.010000 2,3,4,6,7,8-HxCDF-13C 2.00 86 Total PeCDF 0,4500 0,010000 1,2,3.7,8.9-HxCDF-13C 2.00 65 1,2,3.4,7,8-HxCDD-13C 2,00 103 1,2,3,7,8-PeCDD 0.0210 0.010000 J 1,2,3,6,7,8-HxCDD-13C 2,00 92 Total PeCDD 2.3000 0.010000 1,2,3,4,6,7,8-HpCDF-13C 2.00 81 1,2,3,4,7.8,9-HpCDF-13C 2.00 59 1,2,3,4,7,8-HxCDF 0.0400 0.010000 J 1,2,3,4,6,7,8-HpCDD-13C 2.00 66 1,2,3,6,7,8-HxCDF 0.0400 0.010000 J OCDD-13C 4.00 36 IP 2,3,4,6,7,8-HxCDF 0.0360 0.010000 J 1,2,3,7,8,9-HxCDF 0.0160 0.010000 J 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF 0.2400 0.010000 1,2,3,7,8.9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD 0.0150 0,010000 J 2,3,7,8-TCDD-37CI4 0.20 68 1,2,3,6,7,8-HxCDD 0.0270 0.010000 J 1,2,3,7,8,9-HxCDD 0.0150 0.010000 J Total HxCDD 1.1000 0.010000

1.2,3,4,6,7,8-HpCDF 0.1500 0.010000 Total 2,3.7,8-TCDD 1.2,3,4,7,8,9-HpCDF 0.0220 0.010000 J Equivalence: 0.081 ng/S -Jif? Total HpCDF 0.1700 0.010000 (Using ITE Factors)

1.2,3,4,6,7,8-HpCDD 0.2200 0,010000 B Total HpCDD 0.2700 0.010000 OCDF 0.1600 0,020000 OCDD 1.8000 0,020000 B LRL = Lower Reporting Limit Cone = Concentration (Totals include 2.3,7,8-substituted isomers) I = Interference EMPC = Estimated Maximum Possible Concentration E = 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 Report No.... 01-1051099

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

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NYC-WTC_000182810