NYC-WTC_000226903

NYC 9/11 Public Portal Document

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

^ace Analytical_________ _ Methoid 8290 Blank Analysis Results Tel: 612-607-1700 FaxL612-6Q7-6444

■1 Client - ATC -..J Lab Sample ID BLANK-1401 Matrix WIPE Filename F20107A_03 Dilution NA ' i Total Amount Extracted ICALDate 1 m2 01/02/2002 , Extracted Analyzed 01/03/2002 01/07/2002 10:40 CCal Filename(s) F20107A_01 & F20107A_15 Injected By LMD

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

I 2,3,7,8-TCDF Total TCDF ND ND 0.00200 0.00200 2,3,7,8-TCDF-13C 2,3,7,8-TCDD-13C 2.00 2.00 76 81 1,2,3,7,8-PeCDF-13C 2.00 83 ! 2,3,7,8-TCDD . ND ■ 0.00200 2,3,4,7,8-PeCDF-13C 2.00 80 Total TCDD ND 0.00200 ' 1,2,3,7,8-PeCDD-13C 2.00 90 1,2.3,4,7,8-HxCDF-13C 2.00, 94 T,2,3,7,8-PeCDF ND 0.01000 1,2,3.6,7,8-HxCDF-13C 2.00 96

I 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 90 96 93 1,2,3,7,8-PeCDD ND - 0.01000 1,2,3.6,7,8-HxCDD-13C 2.00 ■ 97 Total PeCDD ND - 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 .108 1.2,3,4,7,8,9-HpCDF-13C 2.00 110 1,2,3,4,7.8-HxCDF ND 0.01000 1,2,3,4,6,7.8-HpCDD-13C 2.00 117 1-,2,3,B,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 91 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-'l3C . 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.01000 2,3,7.8-TCDD-37CI4 0.20 81 ■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

i OCDF OCDD ND ND 0.02000 0.02000

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = Interference

I EMPC = Estimated Maximum Possible Concentration LRL = Lower Reporting Limit J = Concentration detected is below the calibration range . E = PCDE Interference ND = Not Detected NA = Not Applicable P = Recovery outside of target range NC = Not Calculated A = Detection Limit based ori signal-to-noise measurement * = See Discussion

Report No.... 01-1052682

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

CITY_21MC100_002896267

NYC-WTC_000226920