NYC-WTC_000194771

NYC 9/11 Public Portal Document

Pace Analirtical Services, Inc. 1700 Eim Street - Suite 200 Minneapolis, MN 55414

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

Client - ATC Client's Sample ID ATC-0214-89M-DX3 Lab Sample ID 103331872 Filename U20312A_13 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 ICAL Date 03/12/2002 Received 02/18/2002 CCal Filename(s) U20312A_06 & U20312A_21 Extracted 03/04/2002 Method Blank ID BLANK-1495 Analyzed 03/12/2002 20:07 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7.8-TCDF ND 0.0020 2,3,7,8-TCDF-13C 2.00 71 Total TCDF ND 0.0020 2,3,7,8-TCDD-13C 2.00 71 1,2,3,7,8-PeCDF-13C 2.00 73 2,3,7,8-TCDD ND 0.0026 A 2,3,4,7,8-PeCDF-13C 2.00 73 Total TCDD 0.0043 0.0020 J 1,2,3,7,8-PeCDD-13C 2.00 77 * 1,2,3,4,7,8-HxCDF-13C 2.00 89 1.2,3.7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 72 2.3.4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 75 Total PeCDF ND 0.0100 1,2,3,7,8,9-HXCDF-13C 2.00 81 1,2,3,4,7,8-HxCDD-13C 2.00 107 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 74 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 89 1,2,3,4,7,8,9-HpCDF-13C 2.00 84 1.2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 99 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 78 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 74 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: 0.000050 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 0.0500 0.0200 BJ 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 = Not Calculated Nn = Value obtained from additional analysis * = See Discussion Report No.... 02-1054211

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

CITY_21MC100_003096945

NYC-WTC_000194771