NYC-WTC_000194743

NYC 9/11 Public Portal Document

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

weAnalvtical Tel: 612-607-1700 Fax: 612- 607-6444 Method 8290 Blank Analysis Results Client - ATC

Lab Sample ID BLANK-1566 Matrix WIPE Filename F20416B_08 Dilution NA Total Amount Extracted 1 m2 Extracted 04/12/2002 ICAL Date 04/12/2002 Analyzed 04/17/2002 09:20 CCal Filename(s) F20416B_01 &F20416B_13 Injected By BAL

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 72 Total TCDF ND 0.00200 2,3,7.8-TCDD-13C 2.00 71 1,2,3,7,8-PeCDF-13C 2.00 79 2.3,7,8-TCDD ND 0.00200 2,3,4,7.8-PeCDF-13G 2.00 77 Total TCDD ND 0.00200 1,2,3,7,8-PeCDD-13G 2.00 81 1,2,3,4,7,8-HxCDF-13C 2.00 99 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,6,7,8-HxCDF-13C 2.00 69 1 2,3,4,7,8-PeCDF Total PeCDF ND ND 0.01000 0.01000 2,3,4,6,7,8-HxCDF-13C 1,2,3,7,8,9-HxCDF-13C 1,2,3,4,7,8-HxCDD-13C 2.00 2.00 2.00 84 87 93 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 79 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 77 1,2,3,4,7,8,9-HpCDF-13C 2.00 73 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 74 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 69 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 Total HxCDF ND 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 76 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 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors) 1,2,3,4,6,7,8-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 = intfsrference EMPC = 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 signal-to-noise measurement * = See Discussion

Report No.... 02-1055554

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

CITY_21MC100_003096903

NYC-WTC_000194743