NYC-WTC_000211842

NYC 9/11 Public Portal Document

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

^ceAnalvticar_________ Method 8290 Laboratory Control Spike Results Tel; 612-607-1700 Fax: 612- 607-6444

Client - ATC

Lab Sample ID SPIKE-DUP-1343 Filename F20320A_03 Matrix WIPE Total Amount Extracted 1 Sample Dilution NA ICAL Date 01/24/2002 Extracted 03/14/2002 CCal Filename(s) F20320A_01 &F20320A_16 Analyzed 03/20/2002 09:36 Method Blank ID BLANK-1516 Injected By MASB

Native OF'~ Qm % Internal ng's Percent Isomers (ng) (ng) Standards Added Recovery Rec. 2,3,7,8-TCDF 0.20 0.22 109 2,3,7,8-TCDF-13C 2.00 . 72 2,3,7,8-TCDD-13C 2.00 67 1,2,3,7,8-PeCDF-13C 2.00 76 2,3,7.8-TCDD 0.20 0.20 102 2,3,4,7,8-PgCDF-13C 2.00 73 1,2,3,7,8-PeCDD-13C ’ 2.00 71 1,2,3,4,7,8-HxCDF-13C 2.00 111 1,2.3,7.8-PeCDF . 1.00 1.03 103 1,2,3,6,7,8-HxCDF-13C 2.00 80 2,3,4,7,8-PeCDF 1.00 1.04 104 2,3,4,6,7,8-HxCDF-13C 2.00 90 1,2,3,7,8,9-HxCDF-13C 2.00 97 1,2,3,4,7,8-HxCDD-13C- 2.00 104 1,2.3,7,8-PeCDD 1.00 1.04 104 1,2,3,6,7,8-HxCDD-13C 2.00 81 1,2,3,4,6,7,8-HpCDF-13C 2.00 > 82 1,2,3,4,7,8,9-HpCDF-13C 2.00 77 1,2.3,4.7.8-HxCDF 1.00 1.04 104 1,2,3,4,6,7,8-HpCDD-13C 2.00 84 1,2,3,6,7,8-HxCDF 1.00 0.98 98 OCDD-13C 4.00 83 2,3,4,6,7,8-HxCDF 1.00 1.05 105 1,2,3,7,8,9-HxCDF 1.00 1.03 103 1,2,3,4-TCDD-13C 2.00 NA 1,2,3,7,8,9-HxCDD-13C 2.00 ■ NA

1,2,3,4,7,8-HxCDD 1.00 1.05 105 2,3,7,8-TCDD-37CI4 0.20 69 1,2,3,6,7,8-HxCDD 1.00 1.05 105 1,2,3,7,8,9-HxCDD 1.00 1.04 104

1,2,3,4.6,7.8-HpCDF 1.00 1.03 1,2,3,4,7,8,9-HpCDF 1.00 1.01

1.2,3,4.6,7.8-HpCDD 1.00 1.03. 103

OCDF 2.00 85 OCDD 2.00 102

Qs = Quantity Spiked Om = Quantity Measured Rec. = Recovery (Expressed as Percent) P = Recovery outside of target range X = Background subtracted value Nn = Value obtained from additional analysis J■ NA = Not Applicable Report No.... 02-1054704 * = See Discussion

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

CITY_21MC100_002865547

NYC-WTC_000211842