NYC-WTC_000202221

NYC 9/11 Public Portal Document

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

^ace Analytical ______ _ Tel: 612-6Q7-1700 Fax: 612- 607-6444

Method 8290 Blank Analysis Results

Client - ATC

Lab Sample ID BLANK-1606 Matrix WIPE Filename F20506B_02 Dilution NA Total-Amount Extracted 1 m2 . Extracted , 04/30/2002 IGALDate-. 05/04/2002 Analyzed 05/06/2002 20:44 GGalFilename(s) F20506A_13 & F20506B_14 Injected By MRO

Native Cone EMPC LRL internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF ND 0.0025 A 2,3,7,8-TCDF-13C 2,00 96 Total TCDF ND 0.0020 2,3,7,8-TCDD-13C 2.00 89 1,2,3,7,8-PeCDF-13C 2.00 89 2,3,7,8-TCDD ND 0.0053 A 2,3,4,7,8-PeGDF-13C ' 2.00 89 . Total TCDD ND 0.0020 1,2,3,7,8-PeCDD-13C 2.00 85 1,2,3,4,7,8-HxCDF-13C 2.00 120 1,2,3,7,8-PeGDF ' ND 0.0100 1 ,2,3,6,7,8-HxCDF-13C 2.00 114 2,3,4,7,8-PeCDF ND 0:0100 ■ 2,3,4,6,7,8-HxCDF-13C 2.00 115 Total PeCDF ND 0.0100 1,2,3,7,8,9-HxCDF-13C 2.00 111 1,2,3,4,7,8-HxCDD-13C 2.00 117 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 116; Total PeCDD ND 0.0100 1,2,3,4,6,7,8-HpCDF-13C 2.00 ' 113 1,2,3,4,7,8,9-HpCDF-13C 2.00 126 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6.7,8-HpCDD-13C 2.00 100 1,2,3,6,7,8-HxCDF ; ND OCDD-13C 4.00 117* 2,3,4,6,7,8-HxGDF . ND’Y 0.0100 . : ; 1,2,3,7,8,9-t-lxCDF ; ND;: 0.0100,:; 1,2,3,4-TCDD-13C 2.00 NA Total HxGDF ; ND 0.0100. l,2,3,7,8,9-HxCDD-13C 2.00 NA

l,2,3,4,7,8^HxGDD ND 0.0100;’ 2,3,7,8-TCDD-37Cl4 0.20 95 1,2,3,6,7,8-HxCDD ND G.0100;;r 1,2,3,7,8,9-HxCDD ND 0.01 OO; Total HxCDD ; ’ ND 0.0100 ; ; 1,2,3,4,6,7,8-HpCDF ;; ND Total 2,3.7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence; 0.00 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 OCPD ND 0.0200

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = Interference EMPG = Estimated Maximum Possible Concentration E = PCDE Interference LRL = Lower Reporting Limit ND = Not Detected , J = Concentration detected is below the calibration range NA = Not Applicable P = Recovery outside of target range NC = Not Calculated A = Detection Limit based on signat-to-noise measurement * = See piscussion

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_003271051

NYC-WTC_000202221