NYC-WTC_000228701

NYC 9/11 Public Portal Document

Pace Analytical Services, Inc.

/^^ceAnalvticar 1700 Elm Street-Suite 200 Minneapolis, MN 55414

Tel: 612-607-1700

Method 8290 Analysis Results Client - ATC ASSOCIATES Client's Sample ID ATC-0525-M833-DX3 Lab Sample ID 103580007 Filename F20617A_08 Injected By MRO Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 05/25/2002 ICAL Date 05/04/2002 Received 05/29/2(X)2 CCal Filename(s) F20616A_15&F20617A_15 Extracted 06/12/2002 Method Blank ID BLANK-1666 Analyzed 06/17/2002 12:53 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3.7,8-TCDF ND 0.0020 2,3,7,8-TCDF-13C 2.00 86 Total TCDF 0.0064 0.0020 J 2,3.7,8-TCDD-13C 2.00 72 1,2,3,7,8-PeCDF-13C 2.00 69 2,3,7,8-TCDD ND 0.0023 A 2,3,4,7,8-PeCDF-13C 2.00 69 Total TCDD 0.0180 0.0020 B 1,2,3,7,8-PeCDD-13C 2.00 60 1,2,3,4,7,8-HxCDF-13C 2.00 87 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 111 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6.7,8-HxCDF-13C 2.00 99 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 92 1,2,3,4,7,8-HxCDD-13C 2.00 82 1.2,3.7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 92 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 75 1,2,3,4,7,8,9-HpCDF-13C 2.00 59 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 66 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 58 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 85 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: 0.000075 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 0.0750 0.0200 J LRL - Lower Reporting Limit Cone = Concentration (Totals Include 2,3,7,B-subatitutod isomers) I = interfererree 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 Ihan 10 times higher than method blank level NA = NotApplicablo P s Recovery outside of target range NC = Not Calculatod Nn = Value obtained from additional analysis • * = See Discussion Report No.... 02-1058093

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

CITY_21MC100_002901387

NYC-WTC_000228704