NYC-WTC_000194737

NYC 9/11 Public Portal Document

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

'^ace Analytical__________ 8290 Analysis Method Results Tel: 612-607-1700 Fax: 612- 607-6444

Client - ATC Client's Sample ID ATC-0418-89M-DX1 Lab Sample ID 103481354 Filename F20507A_09 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/18/2002 ICAL Date 05/04/2002 Received 04/23/2002 CCal Filename(s) F20507A_06 & F20507A_22 Extracted 04/30/2002 Method Blank ID BLANK-1606 Analyzed 05/07/2002 17:23 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2.3,7,8-TCDF 0.0022 0.00200 J 2,3,7,8-TCDF-13C 2.00 77 Total TCDF 0.0220 0.00200 2,3,7,8-TCDD-13C 2.00 70 1,2,3,7,8-PeCDF-13C 2.00 61 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 61 Total TCDD 0.0240 0.00200 1,2,3,7,8-PeCDD-13C 2.00 60 1,2,3,4,7,8-HxCDF-13C 2.00 91 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 80 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 83 Total PeCDF ND 0.01000 1,2,3,7.8,9-HxCDF-13C 2.00 80 1,2,3,4,7,8-HxCDD-13C 2.00 89 1,2,3,7,8-PeCDD ND 0.01000 1,2,3.6,7,8-HxCDD-13C 2.00 86 Total PeCDD 0.0100 0.01000 J 1,2,3.4,6,7,8-HpCDF-13C 2.00 78 1,2,3.4,7,8,9-HpCDF-13C 2.00 64 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6.7.8-HpCDD-13C 2.00 68 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 55 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 75 1,2,3,6,7,8-HxCDD ND 0.01000 1,2,3,7,8,9-HxCDD ND 0.01000 Total HxCDD 0.0120 0.01000 J 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: 0.00054 ngy'm2 Total HpCDF ND 0.01000 (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD 0.0180 0.01000 J Total HpCDD 0.0350 0.01000 J OCDF ND 0.02000 OCDD 0.1300 0.02000 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 = Saturatisd 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 = Mot Calculated Nn = Value obtained from additional analysis * = See Discussion Report No.... 02-1056603

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_000194737