NYC-WTC_000229440

NYC 9/11 Public Portal Document

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

we Analytical_________ Method 8290 Analysis Results Tel; 612-607-1700 Fax- 61?- 607-6444

Client - ATC Client's Sample ID ATC-0403-STY-DX3 Lab Sample ID 103451290 Filename U20502B_06 J Injected By Total Amount Extracted BAL 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/03/2002 ICAL Date 04/16/2002 Received 04/09/2002 CCal Filename(s) U20502B_02 & U20502B_12 Extracted 04/24/2002 Method Blank ID BLANK-1588 Analyzed 05/03/2002 00:48 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF 0.0034 0.0024 JA 2,3,7,8-TCDF-13C 2.00 64 Total TCDF 0.0690 0.0020 2.3,7,8-TCDD-13C 2.00 71 1,2,3,7,8-PeCDF-13C 2.00 62 2,3,7,8-TCDD ND 0.0029 A 2,3,4,7,8-PeCDF-13C 2.00 62 1i Total TCDD 0.2600 0.0020 B 1,2,3,7,8-PeCDD-13C 1,2,3,4,7.8-HxCDF-13C 2.00 2.00 68 87 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 80 2,3,4,7,8-PeCDF ND 0.0100 2,3.4,6,7,8-HxCDF-13C 2.00 79 Total PeCDF ND 0.0100 1,2,3,7,8,9-HXCDF-13C 2.00 82 1,2,3.4,7,8-HxCDD-13C 2.00 87 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 78 Total PeCDD 0.0640 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 81 1.2,3,4,7,8,9-HpCDF-13C 2.00 85 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 87 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 81 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 75 1,2,3,6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD 0.0210 0.0100 J 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: 0.00039 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 0.0560 0.0200 BJ J 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 NO = 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..... 02-1056079

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

CITY_21MC100_003797484

NYC-WTC_000229440