NYC-WTC_000229462

NYC 9/11 Public Portal Document

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

Client - ATC Client’s Sample ID ATC-0427-STY-DX16 Lab Sample ID 103513388 Filename F20523A_14 Injected By BAL Total Amount Extracted 0.07 g Matrix DUST % Moisture NA Dilution NA Dry .Weight Extracted NA Collected 04/27/2002 ICAL Dats D5/04/2002 Received 05/01/2002 CCal Ftlename(s) F20523A_05 & F20523A_20 Extracted 05/20/2002 Method Blank ID BLANK-1633 Analyzed 05/23/2002 23:29 Native Cone EMPC LRL Internal ng’S Percent Isomers ng/Kg ng/Kg ng/Kg Standards Added Recovery 2,3,7,8-TCDF 43 29 J 2,3,7.8-TCDF-13C 2.00 87 Total TCDF 160 29 2,3.7,8-TCDD-13C 2.00 75 1,2.3.7,8-PeCDF-13C 2.00 68 2,3.7,8-TCDD ND 38 A 2.3,4,7,8-PeCDF-13C 2.00 75 Total TCDD 260 29 B 1,2,3,7,8-P©CDD-13C 2.00 68 1,2,3,4,7.8-HxCDF-13C 2.00 80 1.2,3,7,8-PeCDF ND 140 1.2,3.6,7,8-HxCDF-13C 2.00 96 2.3,4,7,8-PeCDF ND 140 2,3,4,6,7.8-HxCDF-13C 2.00 71 Total PeCDF ND 140 1,2,3,7,3,9-HxCDF-13C 2.00 84 1,2,3.4.7.8-HXCDD-13C 2.00 79 1.2,3,7,8-PeCDD ND 140 1.2,3,6,7,8-HxCDD-13C 2.00 94 Total PeCDD 220 140 1,2,3,4.6.7,B-HpCDF-13C 2.00 64 1.2.3.4,7,8,9-HpCDF-13C 2.00 48 1.2,3,4,7,8’HxCDF ND 140 1,2,3,4,6,7,8-HpCDD-13C 2.00 39 IP 1,2,3,6.7,8-HxCDF ND 140 OCDD-13C 4.00 49 2.3,4,6,7,8-HxCDF ND 140 1,2.3.7,8,9-HxCDF ND 140 1.2,3,4-TCDD-13C 2.00 NA Total HxCDF 150 140 1,2,3.7,8,9-HxCDD-13C 2.00 NA 1.2,3,4,7,8-HxCDD ND 140 2,3,7,8-TCDD-37CI4 0.20 87 1,2,3.6.7.8-HxCDD ND 140 1,2,3,7,8,9-HxCDD ND 140 Total HxCDD 670 140 1,2,3,4.6.7,8-HpCDF 360 140 J Total 2,3,7,8-TCDD 1.2,3,4,7,8,9-HpCDF ND 140 Equivalence: 22 ng/Kg Total HpCDF 620 140 J (Using ITE Factors) 1,2.3,4,6,7,8-ripCDD 790 140 Total HpCDD 1800 140 OCDF 650 290 J OCDD 5200 290 Results reported on a total weight basis LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,S-sub3tituted isomers) 15 Interference EM PC = 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 = Loss than 10 times higher than method blank level NA = Not Applicable P = Recovery outside of target range NC Si 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 the written consent of Paca Analytical Services, Inc.

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NYC-WTC_000229462