NYC-WTC_000207701

NYC 9/11 Public Portal Document

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

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

Client - ATC ASSOCIATES Client's Sample ID ATC-0827-1M-DX3 Lab Sample ID 103815270 Filename U21010BJ2 Injected By MRO Total Amount Extracted 1.00 m2 Matrix WIPE % Moisture NA Dilution NA ■■ '1 Dry Weight Extracted NA Collected 08/27/2002 ICAL Date 08/06/2002 Received 08/28/2002 CCal Filename(s) U21010A_14&U21010B_16 Extracted 09/29/2002 Method Blank ID BLANK-2231 Analyzed 10/11/2002 04:40 Native Cone EMPC LRL Internal ng's PercerU Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2.3,7,8-TCDF ND — 0.00200 2,3,7,8-TCDF-13C 2.00 92 Total TCDF 0.0021 — 0.00200 J 2,3,7,8-TCDD-13C 2.00 87 1,2,3,7,8-PeCDF-13C 2.00 92 2,3,7.8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 95 Total TCDD 0.0190 0.00200 1,2,3,7,8-PeCDD-13C 2.00 89 1,2,3,4,7,8-HxCDF-13C 2.00 100 J 1,2,3,7,8-PeCDF ND 0.01000 1,2,3.6,7,8-HxCDF-13C 2.00 108 2,3,4,7,8-PeCDF ND 0,01000 2,3.4,6,7.8-HxCDF-13C 2.00 105 Total PeCDF ND 0,01000 1,2,3.7,8.9-HxCDF-13C 2.00 104 1,2,3,4,7,8-HXCDD-13C 2.00 112 1,2,3.7.8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 100 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 101 1,2,3,4,7,8,9-HpCDF-13C 2.00 93 1,2,3.4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 94 1.2,3,6.7,8-HxCDF ND 0.01000 OCDD-13C 4.00 73 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

1,2,3,4,7,8-HxCDD ND 0.01000 2,3,7,8-TCDD-37CI4 0.20 84 1,2,3,6.7,8-HxCDD ND 0,01000 1,2,3,7,8,9-HxCDD ND 0.01000 Total HxCDD ND 0.01000

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: 0.000045 ng/m2 Total HpCDF ND 0,01000 (Using ITE Factors)

1.2,3,4.6,7,8-HpCDD ND 0.01000 Total HpCDD ND 0.01000 J OCDF ND 0.02000 OCDD 0.0450 0.02000 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 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.... 1061946

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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