NYC-WTC_000223243

NYC 9/11 Public Portal Document

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

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

Client - ATC Client's Sample ID ATC-0410STY-DX3 Lab Sample ID 103468252 Filename F20429A_11 Injected By BAL ! Total Amount Extracted 1 m2 Matrix WIPE I % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/10/2002 ICAL Date 04/12/2002 Received 04/16/2002 CCal Filename(s) F20429A_01 & F20429A_15 Extracted 04/24/2002 Method Blank ID BLANK-1592 Analyzed 04/29/2002 18:25 Native Cone EMPC LRL Internal ng's Percent Isomer* ng/m2 ng/m2 ng/m2 Standards Added Recovery 2.3,7,8-TCDF 0.0039 0.00200 J 2,3,7,8-TCDF-13C 2.00 66 Total TCDF 0.1000 0.00200 2,3.7,8-TCDD-13C 2.00 72 1,2,3,7,8-PbCDF-13C 2.00 80 2,3,7.8-TCDD ND 0.00200 2,3,4,7.8-PeCDF-13C 2.00 75 Total TCDD 0.2600 0.00200 B 1,2,3,7,8-PbCDD-13C 2.00 85 1,2,3.4,7,8-HxCDF.13C 2.00 85 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 60 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 71 Total PeCDF 0.0180 0.01000 J 1,2,3,7,8,9-HxeDF-13C 2.00 68 1,2,3,4,7,8-HxCDD-13C . 2.00 93 1,2,3,7.8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C . 2.00 79 Total PeCDD 0.0390 0.01000 J 1,2,3,4,6,7,8-HpCDF-13C 2.00 71 1,2,3,4,7,8,9-HpCDF-13C 2.00 62 1,2,3,4.7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 86 1,2.3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 54 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 1,2,3,4,7,8-HxCDD ND 0.01000 2,3.7,8-TCDD-37CI4 1 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 0.0230 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: 0.00062 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD 0.0130 0.01000 J Total HpCDD 0.0130 0.01000 J OCDF ND 0.02000 OCDD 0.0990 0.02000 J LRL = Lower Reporting Limit Cone = Concentration (Totals Include 2,3,7,8-sub8tituted Isomers) I = Interference EMPC « Estimated Maximum Possiblo Concentration E « PCDE Interference A » Detection Limit based on signal-to-nolse measurement S = Saturated signal J s 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 oi target range NC = Not Calculated Nn = Value obtained from additional analysis • = See Discussion Report No.... 02-1056372

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_000223246