NYC-WTC_000194762

NYC 9/11 Public Portal Document

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

^aceAnalytical__________ Tel: 612-607-1700 Fax: 612- 607-6444 Method 8290 Analysis Results Client - ATC Client's Sample ID ATC-0308-89M-DX2 Lab Sample ID 103384764 Filename U20326B_11 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 03/08/2002 ICAL Date 03/25/2002 Received 03/12/2002 CCal Filename(s) U20326B_02 & U20326B_17 Extracted 03/21/2002 Method Blank ID BLANK-1528 Analyzed 03/27/2002 00:15 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2.,3,7,8-TCDF 0.0023 0.0020 I 2,3,7,8-TCDF-13C 2.00 70 Total TCDF 0.053 0.0020 2,3,7,8-TCDD-13C 2.00 68 1,2,3,7,8-PeCDF-13C 2.00 68 2,3,7,8-TCDD ND 0.0034 A 2,3,4,7,8-PeCDF-13C 2.00 67 Total TCDD 0.017 0.0020 1,2,3,7,8-PeCDD-13C 2.00 67 1,2,3,4,7,8-HxCDF-13C 2.00 98 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 81 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 83 Total PeCDF 0.011 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 82 1,2,3,4,7,8-HxCDD-13C 2.00 119 T,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 70 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 85 1,2,3,4,7,8,9-HpCDF-13C 2.00 74 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 79 1.2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 70 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 ND 0.0100 1,2,3,4,6,7,8-HpCDF 0.014 0.0100 J Total 2,3,7.8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.00043 ng/m2 Total HpCDF 0.014 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0220 0.0100 I Total HpCDD 0.018 0.0100 J OCDF 0.023 0.0200 J OCDD 0.270 0.0200 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 = Mot Calculated Nn = Value obtained from additional analysis * = See Discussion Report No.... 02-1055016

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

CITY_21MC100_012155653

NYC-WTC_000194762