NYC-WTC_000219094

NYC 9/11 Public Portal Document

Pace Analytical Services, Inc. 1700 Elm 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-1220-89M-DX2 Lab Sample ID 103233904 Filename F11228B_04 li Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 12/20/2001 ICAL Date 11/19/2001 Received 12/21/2001 CCal Filename(s) F11228B_01 & F11228B_16 Extracted 12/23/2001 Method Blank ID BLANK-1389 Analyzed 12/28/2001 23:51 Native Cone EWIPC LRL Internal ng'S Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7.8-TCDF ND 0.0028 A 2,3,7,8-TCDF-13C 2.00 61 i Total TCDF ND 0.0020 2,3,7,8-TCDD-13C 1,2,3,7,8-PeCDF-13C 2.00 2.00 74 65 2,3,7,8-TCDD ND 0.0021 A 2,3,4,7,8-PeCDF-13C 2.00 66 Total TCDD 0.0043 0.0020 J 1,2,3,7,8-PeCDD-13C 2.00 81 1 1,2,3,4,7,8-HxCDF-13C 2.00 73 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 77 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 74 1 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 74 1,2,3,4,7,8-HxCDD-13C 2.00 89 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 91 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 80 1,2,3,4,7,8,9-HpCDF-13C 2.00 78 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 94 1,2,3,6.7,8-HxCDF ND 0.0100 OCDD-13C 4.00 64 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

a 1,2,3,6,7,8-HxCDD 1,2.3,7,8,9-HxCDD Total HxCDD ND ND 0.0320 0.0100 0.0100 0.0100 J

1,2,3,4,6,7,8-HpCDF 0.0150 0.0100 J Total 2,3,7.8-TCDD 1,2,3;4,7,8,9-HpCDF ND 0.0100 Equivalence; 0.00070 ng/m2 Total HpCDF 0.0150 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0340 0.0100 J Total HpCDD 0.0670 0.0100 J

OCDF ND 0.0200 OCDD .0.2100 0.0200 3 Cone = Concentration (Totals include 2,3,7,8-substituted isomers) LRL = Lower Reporting Limit 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.... 01-1052540

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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NYC-WTC_000219098