PCDD/PCDF lab report, PS234M, April 2002

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 Far 612- 607-6444

Client - ATC Client's Sample ID ATC-0326-234M-DX2 Lab Sample ID 103435400 Filename F20424A_12 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA 1 Dry Weight Extracted NA Collected 03/26/2002 ! ICAL Date 04/12/2002 Received 04/02/2002 CCal Filename(s) F20424A_02 & F20424A_14 Extracted 04/15/2002 Method Blank ID BLANK-1572 Analyzed 04/24/2002 16:26 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF 0.0045 0.0020 J 2,3,7,8-TCDF-13C 2.00 66 Total TCDF 0.1200 0.0020 2,3,7,8-TCDD-13C 2.00 67 1,2,3,7,B-PeCDF-13C 2.00 52 2,3,7,8-TCDD ND 0.0020 2,3.4,7,8-PeCDF-13C 2.00 58

1 Total TCDD

1,2,3.7,8-PeCDF 0.2100

ND 0.0020

0.0100 1,2,3,7,8-PeCDD-13C 1.2,3,4,7,8-HxCDF-13C 1,2,3,6.7,8-HxCDF-13C 2.00 2.00 2.00 62 100 44 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 84 Total PeCDF 0.0130 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 77 1,2,3,4,7,8-HxCDD-13C 2.00 107 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 77 Total PeCDD 0.0380 0.0100 J 1,2,3,4,6,7,B-HpCDF-13C 2.00 76 1,2,3,4,7,8,9-HpCDF-13C 2.00 61 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 70 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 51 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 71 1,2.3.6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD 0.0180 0.0100 J

1,2.3,4,6,7,8-HpCDF ND 0.0100 Total 2,3.7,8-TCDD 1,2,3,4,7,8.9-HpCDF ND 0.0100 Equivalence: 0.00083 ng/m2 Total HpCDF ND 0.0100 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.0200 0.0100 J Total HpCDD 0.0200 0.0100 J

OCDF ND 0.0200 OCDD 0.1700 0.0200

LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,8-Bubstituted 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.... 02-1055818

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

CONFIDENTIAL, CITY_21MC100_003444369 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000177778