NYC-WTC_000213019

NYC 9/11 Public Portal Document

1700 Elrn Street - Suite 200 Minneapolis, MN 55414

^ace Analytical_________ Method 8290 Analysis Results TbI; si2-607-1700 Fbx: 612- 607-6444

Client - ATC Client's Sample ID ATC-0427-STY-DX3 Lab Sample ID 103513487 Filename F2052SBJ3 Injected By BAL Total Amount Extracted 0.45 g Matrix DUST % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/27/2002 ICAL Dats 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 16:30 Native Cone EMPC LRL Internal ng’s Percent isomers ng/Kg ng/Kg ng/Kg Standards Added Recovery

2,3,7.a-TCDF 27 8.1 EA 2.3,7.8-TCDF-13C 2.00 74 Total TCDF 440 4.4 2,3,7,8-TCDD-13C 2.00 77 1,2.3,7,8-PeCDF-13C 2.00 78 2.3,7,8.TCDD ND 7.1 A 2,3,4,7,8-P6CDF-13C 2.00 81 Total TCDD 530 4.4 1,2.3.7,a-P©CDD-13C 2.00 84 1,2,3,4,7,8-HxCDF-13C 2.00 79 1.2,3.7,8-P0CDF 25 22.0 J 1,2.3.6.7.8-HXCDF-13C 2.00 83 2,3,4,7,8-PeCDF 52 22.0 J 2,3,4,6,7,8-HxCDF-l3C 2.00 86 Total PeCDF 400 22.0 1,2.3,7,8,9-HxCDF-13C 2.00 83 1,2,3,4,7,8-HXCDD-13C 2.00 93 1,2,3,7,8-PeCDD 25 22.0 I 1,2,3,6,7,a-HxCDD-13C 2.00 89 Total PeCDD 420 22.0 1,2,3,4,6.7,8-HpCDF-13C 2.00 82 1,2,3.4,7,8,9-HpCDF-13C 2.00 56 1.2,3,4,7,8-HxCDF 37 22.0 J 1.2,3,4,6,7.8-HpCDD-13C 2.00 60 1,2,3.6.7,8-HxCDF 61 22.0 E OCD0-13C 4.00 64 2.3,4,6,7.8-HxCDF 58 22.0 J 1,2,3,7,8,9-HxCDF ND 22.0 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF 450 22.0 1,2.3,7,8,9-HxCDD«13C 2.00 NA 1.2.3,4.7,8-HxCDD 32 22.0 J 2.3,7,8-TCDD-37CI4 0.20 79 1,2,3,6.7,8-HxCDD 59 22.0 J 1.2,3,7,8,9-HxCDD 42 22.0 J Total HxCDD 970 22.0 1.2,3.4,6.7,S-HpCDF 360 33.0 A Total 2.3,7.a-TCDD 1,2.3,4,7,8.9-HpCDF ND 56.0 A Equivalence: 64 ng/Kg Total HpCDF 680 22.0 (Using ITE Factors) 1,2,3.4.6.7.8.HpCDD . 590 22.0 Total HpCDD 1300 22.0 OCDF 400 44.0 OCDD 3600 44.0 Results reported on a total weight basis LRL = Lower Reporting Limit Cone = Concontratlon (Totals Include 2,3,7.8-Bubstituted Isomers) I = Interference EMfC B Estimatsd Maximum Possible Concentration E = PCDE InterfereocG A = Detection Limit based on signal-to-noise measurament S = Saturated signal J s Concanrration cetectec ta below the calibration range ND = Not Detected B = Lees than 10 times higher than method blank level NA = Not Applicable P = Recovery outside of target range NC = Not Calculated Nn s 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 the written consent of Paco Analytical Servicas, inc.

CITY_21MC100_002867942

NYC-WTC_000213021