Appendix B laboratory analysis report, confidential

NYC 9/11 Public Portal Document

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

^ace Analytical__________ Method 8290 Analysis Results Tel: 612-607-17CX) Fax: 612- 607-6444

/ Client - ATC ASSOCIATES Client's Sample ID ATC-0503-M894-DX3 Lab Sample ID 103517306 Filename F20513B_06 Injected By MRO Total Amount Extrsicted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 05/03/2002 ICAL Date 05/04/2002 Received 05/07/2002 CCal Filename(s) F20513A_14 & F20514A_01 Extracted 05/10/2002 Method Blank ID BLANK-1616 Analyzed 05/13/2002 23:53 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 73 Total TCDF 0.0022 0.0020 J 2,3.7,8-TCDD-13C 2.00 73 1,2,3.7.8-PeCDF-13C 2.00 69 2,3,7,8-TCDD ND 0.0027 A 2,3,4,7,8-PeCDF-13C 2.00 71 Total TCDD 0.0130 0.0020 1.2.3,7,8-PeCDD-13C 2.00 69 1,2,3,4.7,8-HxCDF-13C 2.00 99 I 1,2,3,7,8-PeCDF ND 0.0100 1,2,3.6,7,8-HxCDF-13C 2.00 97 2,3.4,7,8-PeCDF ND 0.0100 2,3,4.6.7,8-HxCDF-13C 2.00 91 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 87 1,2,3,4,7,8-HxCDD-13C 2.00 92 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 93 Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 95 1,2,3,4,7,8,9-HpCDF-13C 2.00 83 1,2,3,4,7,8-HxCDF ND 0.0100 1.2,3.4,6,7,8-HpCDD-13C 2.00 89 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 92 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 76 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: 0.000031 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 0.0310 0.0200 J 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 J 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 iron additional analysis * = See Discussion Report No.... 02-1057195

1 I REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, I without the written consent of Pace Analytical Services, Inc. J CONFIDENTIAL, CITY_21MC100_003432107

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