NYC-WTC_000218502

NYC 9/11 Public Portal Document

I Pace Analytical Services, Inc. 1700 Elm Street - Suite 200 Minneapolis, MN 55414

^ceAnalytical''_________ Method 8290 Analysis Results Tel: 612-607-1700 Fa*- 612- 607-6444

Client - ATC Client's Sample ID ATC-0222-234M-DX2 Lab Sample ID 103343372 Filename U20311A_15 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/22/2002 ICAL Date 03/11/2002 Received 02/25/2002 CCal Filename(s) U20311A 07& U20311A_22 Extracted 03/05/2002 Method Blank ID BLANK-1499 Analyzed 03/11/2002 23:06 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF ND ---- 0.0033 A 2,3,7,8-TCDF-13C 2.00 78 Total TCDF ND ---- 0.0020 2,3,7,8-TCDD-13C 2.00 69 1,2.3.7,8-PeCDF-13C 2.00 82 N2 2.3,7,8-TCDD ND 0.0056 A 2,3,4,7,8-PeCDF-13C 2.00 79 *N2 Total TCDD ND 0.0020 1,2,3.7,8-PeCDD-13C 2.00 55 N2 1,2,3,4,7,8-HxCDF-13C 2.00 127 1,2.3,7,8-PeCDF ND 0.0100 1.2,3,6.7,8-HxCDF-13C 2.00 92 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 97 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 107 1,2,3,4,7,8-HxCDD-13C 2.00 119 1,2.3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 74 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 91 1,2,3,4,7,8,9-HpCDF-13C 2.00 100 1,2,3,4,7,8-HxCDF ND 0.0100 1.2,3,4,6,7,8-HpCDD-13C 2.00 95 1,2,3.6,7.8-HxCDF ND 0.0100 OCDD-13C 4.00 54 N2 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 72 1,2,3,6.7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD ND 0.0100 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: 0.000081 ng/m2 Total HpCDF ND 0.0100 (Using ITE Factors) 1,2,3,4,6.7.8-HpCDD ND 0.0100 Total HpCDD ND 0.0100 OCDF ND 0.0200 OCDD 0.081 0.0200 BJ LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,B-substituted isomers) I = Interference EMPC s Estimated Maximum Possible Concentration E = PCDE Interference A a Detection Limit based on signal-to-noise measurement S = Saturated signal J s 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 ol target range NC = Not Calculated Nn a Value obtained from additional analysis * = See Discussion Report No.... 02-1054414

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

CITY_21MC100_002879179

NYC-WTC_000218503