NYC-WTC_000226877

NYC 9/11 Public Portal Document

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

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

Method 8290 Blank Analysis Results

I Client - ATC

Lab Sample ID BLANK-1358 Matrix WIPE Filename F11208A_04 Dilution NA J Total Amount Extracted ICAL Date 1 Sample 11/19/2001 Extracted Analyzed 12/05/2001 12/08/2001 19:46 CCal Filename(s) F11208A_01 & F11208A_17 Injected By BAL

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

J 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 62 73 1.2,3,7,8-PeCDF-13C 2.00 75 a 2.3,7.8-TCDD Total TCDD ND 0.0033 0.00200 0.00200 J 2,3,4,7,8-PeCDF-13C 1,2,3,7,8-PeCDD-13C 2.00 2.00 75 85 1,2,3,4,7,8-HxCDF-13C 2.00 87 1,2,3,7,8-PeCDF ■ND 0.01000 1,2,3.6,7,8-HxCDF-13C 2.00 88 . s 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 86 77 77 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 95 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 80 1,2,3,4,7,8,9-HpCDF-13C 2.00 63 1,2,3,4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 73 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 47 2,3,4,6.7,8-HxCDF ND 0.01000 1 1,2,3,7,8,9-HxCDF Total HxCDF ND ND 0.01000 0.01000 1,2,3,4-TCDD-13C 1,2,3,7,8,9-HxCDD-13C 2.00 2.00 NA 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/S 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 J OCDD ND 0.02000

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = Interference 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.... 01-1051682

i REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full,

3 without the written consent of Pace Analytical Services, Inc.

CITY_21MC100_000490793 NYC-WTC_000226894