NYC-WTC_000202221

NYC 9/11 Public Portal Document

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

^ace Analytical Method 8290 Analysis Results Tel: 612-607-1700 " Fax: 612- 607-6444

Client - ATC Client's Sample tD ATC-0418-89M-DX2 Lab Sample ID 103481362 Filename F20507A_20 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution - NA Dry Weight Extracted NA Collected 04/18/2002 ICALDate 05/04/2002 Received 04/23/2002 . GCai Filename(s) F20507A_06 & F20507A_22 Extracted 04/30/2002 Method Blank ID BLANK-1606 Analyzed 05/08/2002 02:20 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 79 Total TCDF 0.0042 0.0020 J 2,3,7,8-TCDD-13C 2.00 72 1,2,3,7,8-PeCDF-13C 2.00 55 2,3,7,8-TCDD ND 0.0027 A 2,3,4,7,8-PeCDF-13C 2.00 52 Total TCDD 0.0150 0.0020 1,2,3,7,8-PeCDD-13C 2.00 52 1,2,3,4,7,8-HXCDF-13C 2.00 108 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 95 2,3,4,7,8-PeCDF ND 0.0100 2;3.4,6,7,8-HxCDF-13C / 2.00 86 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13G 2.00 83 1,2,3,4,7,8-HxCDD-13C 2.00 110 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxGDD-13C 2.00 83 Total PeCDD , 0.0290 : 0.0100 J 1,2,3,4,6,7,8-HpGDF-13C 2.00 79 1,2,3,4,7,8,9-HpCDF-13C 2.00 50 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpeDD-13C. ' 2.00 40 1,2,3,6,7,8-HxCDF ND • : OCDD-13C 4;00 64 2,3,4,e,7,8-HxCDF ND 0.0100 : ; 1,2,3,7,8,9-HxCDF ND 0.0100 7/ 1,2,3,4-TCDD-13C- 7 2.00: NA Total HxCDF ND 0.0100 ■ < 1,2,3,7.8,9-HxGDD-13e;/ \ 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.0100 2,3,7,8-TCDD-37CI4 0.20 75 1.2,3,6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD / 0.1300 0.0100 1,2,3,4.6.7,8-HpCDF 0.0120 0.G100 J Total 2,3,7,8-TCDD / 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.0010 ng/m2 Total HpCDF 0.0120 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpGDD 0.0620 0.0100 Total HpCDD 0.3100 0.0100 OCDF 0.0270 0.0200 J OCDD 0.2600 0.0200 1 LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,8-substituted isomers) I = Interference 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 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.... 02-1056603

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

CITY_21MC100_003271053

NYC-WTC_000202223