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-DX9 Lab Sample ID 103233979 Filename F20103A_11 a Injected By Total Amount Extracted BAL 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 12/20/2001 ICAL Date 01/02/2002 Received 12/21/2001 CCal Filename(s) F20102A_22 & F20103B_01 Extracted 12/23/2001 Method Blank ID BLANK-1389 Analyzed 01/03/2002 16:25 Native Cone EWIPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF 0.0096 0.0020 J 2,3,7,8-TCDF-13C 2.00 75 B Total TCDF

2,3,7,8-TCDD 0.4800 0.0026 0.0020

0.0020 J 2,3,7,8-TCDD-13C ■ 1,2,3,7,8-PeCDF-13C 2,3,4,7,8-PeCDF-13C 2.00 2.00 2.00 79 73 59 Total TCDD 0.6200 0.0020 1,2,3,7.8-PeCDD-13C 2.00 74 1,2,3,4,7,8-HxCDF-13C 2.00 124 lj 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 0.0150 0.0100 J 2,3,4,6,7,8-HxCDF-13C 2.00 90 Total PeCDF 0.1700 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 106 1,2,3,4,7,8-HxCDD-13C 2.00 125 1,2,3,7,8-PeCDD 0.0120 0.0100 J 1,2,3,6,7,8-HxCDD-13C 2.00 80 Total PeCDD 0.3800 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 102 1,2,3,4,7,8,9-HpCDF-13C 2.00 114 1,2,3,4,7,8-HxCDF 0.0160 0.0100 J 1,2,3,4,6,7,8-HpCDD-13C 2.00 114 J 1,2,3,6,7,8-HxCDF 0.0170 0.0100 J OCDD-13C 4.00 116 2,3,4,6,7,8-HxCDF 0.0220 0.0100 J 4 1,2,3,7,8,9-HxCDF ND 0.0100 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF 0.1700 0.0100 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD 0.0130 0.0100 J 2,3,7,8-TCDD-37CI4 0.20 85 1,2,3,6,7,8-HxCDD 0.0190 0.0100 J 1,2,3,7,8,9-HxCDD 0.0110 0.0100 J Total HxCDD 0.5700 0.0100 1,2,3,4,6,7,8-HpCDF 0.0780 0.0100 Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.032 ng/m2 Total HpCDF 0.1100 0.0100 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.2100 0.0100 Total HpCDD 0.4300 0.0100 OCDF 0.1200 0.0200 OCDD 1.6000 0.0200 '-1

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 report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.

CITY_21MC100_002879243

NYC-WTC_000219105