NYC-WTC_000219094

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

Client's Sample ID ATC-1220-89M-DX6 Lab Sample ID 103233946 Filename F11228B_08 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 12/20/2001 I CAL 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 12/29/2001 03:10

Native Cone EWIPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3.7,8-TCDF 0.0038 0.0020 J 2,3,7,8-TCDF-13C 2.00 59 3 Total TCDF 0.1100 0.0020 2,3,7,8-TCDD-13C 1,2,3,7,8-PeCDF-13C 2.00 2.00 69 58 2,3,7,8-TCDD ND 0.0025 A 2,3,4,7,8-PeCDF-13C 2.00 57 Total TCDD 0.1200 0.0020 1,2,3,7,8-PeCDD-13C 2.00 70

a 1,2,3,7,8-PeCDF 2,3,4,7,8-PeCDF ND ND 0.0100 0.0100 1,2,3,4,7,8-HxCDF-13C 1,2,3,6,7,8-HxCDF-13C 2,3,4,6,7,8-HxCDF-13C 2.00 2.00 2.00 70 68 69 Total PeCDF 0.0270 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 69 1,2,3,4,7,8-HxCDD-13C 2.00 95 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 74 Total PeCDD 0.0840 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 71 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 85 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 0.0210 0.0100 J 1,2,3,7,8,9-HxCDD-13C 2.00 NA ri 1,2,3,4,7,8-HxCDD ND 0.0100 2,3,7,8-TCDD-37Cl4 0.20 73

a 1,2,3,6,7,8-HxCDD 1,2,3,7,8,9-HxCDD Total HxCDD ND ND 0.0970 0.0100 0.0100 0.0100

1,2,3,4,6,7,8-HpCDF 0.0260 0.0100 J Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.0018 ng/m2 Total HpCDF 0.0390 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0600 0.0100 Total HpCDD 0.1200 0.0100 i OCDF 0.0390 0.0200 J OCDD 0.4900 0.0200

LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7.8-substituted isomers) I = Interference EM PC = 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 NO = 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_000219102