NYC-WTC_000223629

NYC 9/11 Public Portal Document

Pace Analytical Servicas, Inc. 1700 Elm Street - Suite MO Minneapolis, MN 55414 TM

^aceAnalytical_________ Tel: 612-607-1700 Fay RIP- fin7-fi4A4 Method 8290 Analysis Results Client - ATC Client's Sample ID ATC-0415-150M-DX2 Lab Sample ID 103481347 Filename F20507A_19 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/15/2002 ICAL Date 05/04/2002 Received 04/23/2002 CCal Filename{s) F20507A_06 & F20507A_22 Extracted 04/30/2002 Method Blank ID BLANK-1606 Analyzed 05/08/2002 01:32 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 ND — 0.0020 2,3,7,8-TCDD-13C 2.00 71 1,2.3,7,8-PeCDF-13C 2.00 55 2,3,7,8-TCDD ND 0.0024 A 2,3,4,7,8-PeCDF-13C 2.00 51 Total TCDD 0.0090 0.0020 J 1,2.3,7.8-PeCDD-13C 2.00 52 1,2,3,4.7,8-HxCDF-13C 2.00 112 1,2,3,7.8-PeCDF ND 0.0100 1.2,3,6,7,8-HxCDF-13C 2.00 92 2,3,4,7.8-PeCDF ND 0.0100 2,3,4,6.7,8-HxCDF-13C 2.00 79 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 82 1,2,3,4,7.8-HxCDD-13C 2.00 107 1.2,3,7,8-PeCDD ND 0.0100 1.2,3.6,7.8-HxCDD-13C 2.00 82 Total PeCDD 0.0600 0.0100 1.2,3,4,6,7,8-HpCDF-13C 2.00 76 1,2,3,4,7,8.9-HpCDF-13C 2.00 56 1,2,3,4.7,8-HxCDF ND 0.0100 1,2.3,4,6.7.8-HpCDD-13C 2.00 40 1,2,3,6,7.8-HxCDF ND 0.0100 OCDD-13C, 4.00 63 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 0.0140 0.0100 J 1,2,3,7,8,9-HxCDD-13C 2.00 NA 1,2,3,4,7,8-HxCDD 0.0190 0.0100 J 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 0.2700 0.0100 J 1,2,3,4,6,7,8-HpCDF 0.0150 0.0100 J Total 2,3.7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.0030 ng/m2 Total HpCDF 0.0360 0.0100 (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD 0.0750 0.0100 Total HpCDD 0.4700 0.0100

OCDF ND 0.0200 OCDD 0.2500 0.0200 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 slgnal-to-nolse measurement S = Saturated signal J = Concentration detected Is below ths 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.... 02-1056602

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

CITY_21MC100_002919504

NYC-WTC_000223629