NYC-WTC_000203442

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 I Client's Sample ID ATC-0325-150M-DX2 Lab Sample ID 103435384 Filename U20423A_14 Injected By CMP Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 03/25/2002 ICAL Date 04/16/2002 Received 04/02/2002 CCal Filename(s) U20423A 02 & U20423A_17 Extracted 04/15/2002 Method Blank ID BLANK-1572 Analyzed 04/23/2002 19:33 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF ND 0.0021 A 2,3,7,8-TCDF-13C 2.00 71 Total TCDF ND 0.0020 2,3.7,8-TCDD-13C 2.00 65 1,2,3,7,8-PeCDF-13C 2.00 76 2.3,7,8-TCDD ND 0.0044 A 2,3.4,7,8-PeCDF-13C 2.00 76 Total TCDD ND 0.0020 1,2.3,7,8-PeCDD-13C 2.00 70 1,2,3,4,7,8-HxCDF-13C 2.00 96 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 98 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 98 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 98 1,2,3,4,7,8-HxCDD-13C 2.00 85 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 79 Total PeCDD ND 0.0100 1,2,3,4,6.7,8-HpCDF-13C 2.00 72 1,2,3.4,7,8.9-HpCDF-13C 2.00 82 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 73 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 80 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 71 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 ND 0.0100 Total 2,3.7,8-TCDD 1,2,3,4,7.8,9-HpCDF ND 0.0100 Equivalence: 0.00 ng/m2 Total HpCDF ND 0.0100 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD ND 0.0100 Total HpCDD ND 0.0100 OCDF ND 0.0200 * OCDD ND 0.0200 LRL = Lower Reporting Limit Cone = Concentration (Totals Include 2,3,7,8-sub8tituted Isomers) I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference A = Detection Limit based on signal-to-nolse 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 NO = Not Calculated J Nn = Value obtained from additional analysis * = See Discussion Report No.... 02-1055817

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

CITY_21MC100_003068203

NYC-WTC_000203443