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-DX11 Lab Sample ID 103233995 Filename F11228B_12 a 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 12/29/2001 06:30

Native Cone EMPC LRL internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF ND 0.00200 2,3,7,8-TCDF-13C 2.00 63 Total TCDF ND 0.00200 2,3,7,8-TCDD-13C 2.00 78 1,2,3,7,8-PeCDF-13C 2.00 71 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 71 Total TCDD ND 0.00200 1,2,3,7,8-PeCDD-13C 2.00 88 1,2,3,4.7,8-HxCDF-13C 2.00 71 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 74 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 75 Total PeCDF ND 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 77 1,2,3,4,7,8-HxCDD-13C 2.00 101 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 80 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 80 1,2,3,4,7,8,9-HpCDF-13C 2.00 81 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 96 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 72 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 76 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: 0.00 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 OCDF ND 0.02000 OCDD ND 0.02000

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.... 01-1052540

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

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NYC-WTC_000219107