NYC-WTC_000202491

NYC 9/11 Public Portal Document

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

i ^ace Analytical Tel: 612-607-1700 Fax- 612- 607-6444

Method 8290 Blank Analysis Results Client - ATC ASSOCIATES

Lab Sample ID BLANK-2220 Matrix WIPE Filename U21002B_08 Dilution 1 Total Amount Extracted 1.00 m2 Extracted 09/26/2002 ICALDate 08/06/2002 Analyzed 10/02/2002 23:53 CCal Filename(s) U21002B_03 & U21002B_16 Injected By 7 . BALL , L 1 ;

Native Cone EMPC LRL Internal ng’s Percent isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

I-' 2,3,7,8-TGDF 77 nd : -- 0.00200 2,3,7,8-TGDF-13C 2.00 Total TCDF ND —- , 0.00200 2,3,7,8-TGDD-13G 2.00 1,2,3,7,8-PeGDF-13G 2.00 2.3,7,8-TCDD ND 2,3,4,7,8-PeGDF-13G 2.00 Total TCDD 0.041 0.00200 1,2,3.7,8-PeCDD-13G 2.00 1,2,3,4,7,8-HxCDF-13G 2.00 1,2,3.7.8-PeCDF 0.01000 1,2,3.6,7,8-HxCDF-13C 2-20 2,3.4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2-00

'I Total PeCDF ND 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 1,2,3,4,7,8-HxCDD-13C 2.00 1,2,3,y£^CDD ND 0.01000 1,2.3,6,7,8-HxCDD-13G 2.00 Total PeCDD ND 0.01000 1,2,3,4,6,7.8-HpGDF-13C :2.00 1,2,3,4,7,8,9-HpCDF-13C 2.00 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13G 2.00 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 ■ j LL l 2,3,4,6,7,8-HxCDF ND 0.01000 1 ,2,3,7,8,9-HxCDF ND 0.01000 1,2,3,4-TCDD-13C 2.00 NA LY- Total HxCDF ND 0.01000 1,2,3,7,8.9^HxCDD-13C 2.00 MA 3/7/ I Y 'L 1,2,3,4,7,8-HxCDD 0.01000 2,3,7.8-TCDD-37CI4 0.20 65 1,2,3,6,7,8-HxCDD ND 0.01000 3^ Y/ 1,2,3,7,8,9-HxCDD ND 0.01000 Total HxCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF ND - 0.01000 Total 2.3.7,8-tCDD'.: . 1,2,3,4,7.a,9-HpCDF ND - 0.01000 Equivalence: 0.00 ng/m2 Total HpCDF ND - 0.01000 (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD ND — 0.01000 Total HpCDD. Y Y: 7 Y ■ L / ■ 7 ND./ L. ■— 0.01000 t OCDF ND --— 0.02000 OCDD ND — 0.02000

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference /Y ■ ' 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 =Nc?t Calculated r-' A = Detection Limit based on signal-to-noise measurement • = See Discussion j L Report NO.....1062185

REPORT OF LABORATORY ANALYSIS I ' This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, lr»c.

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NYC-WTC_000202491