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: 512-607-1700 Fax- 612- 607-6444

Client - ATC Client's Sample ID ATC-1220-89M-DX8 Lab Sample ID 103233961 Filename F11228B_10

I Injected By Total Amount Extracted BAL 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 04:50

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

2,3,7,8-TCDF ND 0.0041 A 2,3,7,8-TCDF-13C 2.00 61 a Total TCDF

2,3,7,8-TCDD 0.038

ND 0.0020

0.0023 A 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 74 64 64 Total TCDD 0.048 0.0020 1,2,3,7,8-PeCDD-13C 2.00 78 1,2,3,4,7,8-HxCDF-13C 2.00 78 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 68 2.3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 75 Total PeCDF 0.013 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 73 1,2,3,4,7,8-HxCDD-13C 2.00 104 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6.7,8-HxCDD-13C 2.00 80 Total PeCDD 0.026 0.0100 J 1,2,3,4.6,7,8-HpCDF-13C 2.00 75 1,2,3,4,7,8,9-HpCDF-13C 2.00 74 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4.6,7,8-HpCDD-13C 2.00 88 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 69 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 ' j Total HxCDF 0.017 0.0100 J 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 73 1,2,3,6,7,8-HxCDD ND 0.0100 1.2,3,7,8,9-HxCDD ND 0.0100 y Total HxCDD 0.064 0.0100 1,2,3,4,6,7,8-HpCDF 0.017 0.0100 J Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.0011 ng/m2 Total HpCDF 0.031 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.055 0.0100 Total HpCDD 0.100 0.0100 J La OCDF 0.026 0.0200 J OCDD 0.390 0.0200

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_002879242

NYC-WTC_000219104