NYC-WTC_000202334

NYC 9/11 Public Portal Document

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

^ace Analytical Tei: 612-607-1700 Fax: 612- S07-6M4

/ Method 8290 Blank Analysis Results

Client - ATC ASSOCIATES

Lab Sample ID BLANK-2262 Matrix WIPE Filename F21G11B_08 Dilution NA Total Amount Extracted 1.00 m2 Extracted 10/06/2002 ICALDate 10/01/2002 Analyzed 10/12/2002 02:41 . CCal Filename's) F21011B _02 & F21011B _18 Injected By BAL 1 •

Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7.8-TCDF ND — 0.00200 2,3,7,8-TCDF-13C 2.00 77 Total TCDF ND — 0.00200 2,3,7,8-TCDD-13e 2.00 73 1.2,3,7.8-PeCDF-T3C 2.00 95 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00) 100 Total TCDD ND 000200 ’ 1,2,3,7,8-PeCDD-13C 2.00 93 1,2,3,4,7,8-HxCDF-13C 2.00 107 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 111 2,3.4,7,8-PeCDF ND 0,01000 2,3,4,6.7,8-HxCDF-13C 2.00 120 Total PeCDF

1,2,3,7,8-PeCDD . ND

ND 0.01000

0.01000 1,2,3,7,8,S-HxCDF-13C 1,2,3,4,7,8-HxCDD-13C 1,2,3,6.7,8-HxCDD-13C 2.00 2.00 2.00 114 91 110 I Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 103 1,2,3,4,7,8,9-HpCDF-13C 2.00 102 , 1,2,3,4,7,8-HxCDF ND ■— 0.01000 1,2,3,4.6,7,8-HpCDD-13C 2.00 94 1,2,3,6,7,8-HxCDF ND — 0.01000 OCDD-13C 4.00 94 2,3,4,6.7.8-HxCDF 0.01000 1,2,3,7,8,9-HxCDF ND ■— 0.01000 1,2,3,4-TCDD-13C 2.00 : : NA Total HxCDF ND •— 4 0.01000 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2.3,4,7,8-HxCDD ND 0.01000 2,3,7,8-TCDD-37CI4 0.20 69 1,2,3,6,7,8-HxCDD ND 0.01000 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 1,2,3,4,7,8,9-HpCDF ND 0.01000 Equivalence: 0.00 ne/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

T,2,3,4,6,7,8-HpCDD ND 0.01000 Total HpCDD ND 0.01000

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 £ = 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 1 NC = Not Calculated A = Detection Limit based on signal-to-noise measurement * = See Discussion

Report No.....1062382

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

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NYC-WTC_000202334