Volatile organic compound wipe analysis results, Sept 2002

NYC 9/11 Public Portal Document

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

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Ghent - ATC ASSOCIATES Client's Sample ID ATC-0912-124M-DX-2 Lab Sample ID 103857769 Filename U21018A_10 Injected By MRO Total Amount Extracted 1.00 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 09/12/2002 ICAL Date 08/06/2002 Received 09/16/2002 CCal Filename(s) U21018A_03 & U21018A_15 Extracted 10/10/2002 Method Blank ID BLANK-2278 Analyzed 10/18/2002 17:51

Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF ND 0,00200 2,3.7,8-TCDF-13C 2.00 94 Total TCDF ND 0.00200 2,3,7,8-TCDD-13C 2.00 91 1,2,3,7,8-PeCDF-13C 2.00 107 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 104 Total TCDD ND 0.00200 1,2,3,7,8-PeCDD-13C 2.00 101 1,2,3,4,7,8-HxCDF-13C 2.00 101 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 112 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 102 Total PeCDF ND 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 99 1.2,3.4.7,8-HxCDD-13C 2.00 106 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 102 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 88 1,2,3,4,7,8,9-HpCDF-13C 2.00 79 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 79 1,2,3,6,7,8-HxCDF ND 0 01000 OCDD-13C 4 00 73 2,3,4,6,7,8-HxCDF ND 0.01000 1,2,3,7,8,9-HxCDF ND 0 01000 1,2,3.4-TCDD-13C 2 00 NA Total HxCDF ND 0.01000 1,2,3,7,8,9-HxCDD-13C 2 00 NA

1,2,3,4,7,8-HxCDD ND 0.01000 2,3,7,8-TCDD-37CI4 0.20 85 1,2,3,6,7,8-HxCDD ND 0.01000 1,2,3,7,8,9-HxCDD ND 0 01000 Total HxCDD ND 0.01000

1,2,3,4,6,7,8-HpCDF ND 0.01000 Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0 01000 Equivalence: 0.000035 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD ND 0 01000 Total HpCDD ND 0 01000 OCDF ND 0.02000 OCDD 0.035 0.02000 J

LRL = Lower Reporting Limit Cone = Concentration {Totals include 2,3,7,8-substitLited 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 ol target range NC = Not Calculated Nn = Value obtained from additional analysis • = See Discussion Report No... 1062687

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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