NYC-WTC_000229461

NYC 9/11 Public Portal Document

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^ace Analytical__________ Method 8290 Analysis Results Tel: 612-607-1700 Fay 612- 607-6444

Client - ATC Client’s Sample ID ATC-0427-STY-DX7 Lab Sample ID 103513529 Alename F20525B_05 Injected By BAL Total Amount Extracted 0.77 g Matrix DUST % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/27/2002 ICAL Data 05/04/2002 Received 05/01/2002 CCal Filename(s) F20525A_17& F20525B 16 Extracted 05/20/2002 Method Blank ID BLANK-1633 Analyzed 05/26/2002 09:55 Native Cone EMPC LRL Internal ng’s Percent Isomers ng/Kg ng/Kg ng/Kg Standards Added Recovery 2.3,7.8-TCDF 48 2.6 E 2,3,7.8-TCDF-13C 2.00 78 Total TCDF 930 2.6 2,3,7.8-TCDD-13C 2.00 79 1.2,3,7,a-PeCDF-13C 2,00 79 2,3.7,8-TCDD 3100 2.6 2,3,4,7.S-PeCDF-13C 2.00 80 Total TCDD 4400 2.6 1.2,3,7,8-PeCDD-13C 2.00 83 1.2,3.4,7.8-HxCDF-13C 2.00 90 1,2,3,7,8-PgCDF 51 13.0 J 1.2,3.6,7,8-HXCDF-13C 2.00 85 2,3,4.7,8-PeCDF 58 13.0 E 2,3,4,6,7,8-HxCDF-13C 2.00 91 Total PeCDF 440 13.0 1,2,3,7.8,9-HxCDF-13C 2.00 92 1,2.3,4,7,8-HxCDD-l3C 2.00 89 1.2.3,7,8-PeCDD 20 13.0 I 1,2,3.6.7,a-HxCDD-13C 2.00 95 Total PeCDD 520 13.0 1,2,3,4,6,7,8-HpCDF-13C 2.00 84 1,2,3,4.7,8.9-HpCDF-13C 2.00 68 1,2,3,4,7,8-HxCDF 82 13.0 E 1,2,3.4.6,7,8-HpCDD-13C 2.00 84 1,2.3,6,7,8-HxCDF 77 13.0 E OCDD-13C 4.00 68 2,3,4,6,7.8-HxCDF 51 13,0 J 1,2,3,7,8,9-HxCDF 26 13.0 I 1.2,3,4-TCDD-13C 2.00 NA Total HxCDF 370 13.0 1,2,3,7,8,9-HxCDD-13C 2.00 NA 1,2.3,4,7.8-HxCDD 14 13.0 J 2,3,7.8-TCDD-37CI4 0.20 85 1,2,3,6.7,8-HxCDD 34 13.0 J 1,2,3,7.8,9-HxCDD 25 13.0 J Total HxCDD 770 13.0 1,2,3,4,6,7.8-HpCDF 230 13.0 Total 2,3,7,8-TCDD 1,2.3,4,7,8,9-HpCDF 29 23.0 lA Equivalence; 3100 ng/Kg Total HpCDF 230 13.0 (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD 330 13.0 Total HpCDD 650 13.0 OCDF 290 2S.0 OCDD 2800 26.0 Results reported on a total weight basis LRL = Lower Reporting Limit Cone = Concentration (Totals Include 2.3,7,8-3ubstiiut0d isomers) I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE interference A = Detection Limit based on signal-to-noisa 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.... 02-1057132

REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without me wrinen consent of Paco Analytical Services, mo.

CITY_21MC100_002902522

NYC-WTC_000229461