NYC-WTC_000202335

NYC 9/11 Public Portal Document

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

^ace Analytical Method 8290 Laboratory Control Spike Results . Ts, 612-607-1700 Fax' 612-607-6444

Client - ATC ASSOCIATES

Lab Sample ID . SPIKE-2263 Filename F210t1B_04 Matrix WIPE Total Amount Extracted 1.00 Sample Dilution (NA ICALDate 10/01/2002 Extracted 10/06/2002 CCal Filename(s) F210t1B_02 & F2101tB J8 Analyzed 10/11/2002 23:26 Method Blank ID BLANK-2262 Injected By BALL '■

Native Qs Qm % Internal ng's Percent Isomers (ng) (ng) Rec. Standards Added Recovery

2,3,7,8-TGDF 0.20 0.18 89 2,3,7,8-TCDF-13C 2.00 99 2,3,7,8-TCDD-t3e 2.00 92 1,2,3,7,8-PeCDF-13C . 2.00 107 2,3,7,8-TCDD 0.2G 0.19 94 2,3,4,7,B-PeCDF-13C 2.00 109 1,2,3,7,8-PeCDD-13C - 2.00 too 1,2,3,4,7,8-HxCDF-13C 2.00 107 1,2,3,7,8-PeCDF 1.00 0.92 92 , 1,2,3,6,7,8-HxCDF-13C 2.00 114 2.3,4,7,8-PeCDF 1.00 0.91 91 2,3,4,6,7.8-HxCDF-13C 2.00 121 1,2,3,7,8,9-HxCDF-13C 2.00 11B

1,2,3,7,^-PeCDD 1.00 0.94 94 .1,2,3.4,7.8-HXCDD-13C' .1,2,3,6,7,8-HxCDD-13C 1,2,3,4,6,7,8-HpCDF-13C 1,2,3,4,7,8,9-HpGDF-13C 2.00 2.00 2.00 : 2.00 . 94 111 103 tot j 1.2,3,4,7,8-HxCDF 1.00 0.89 89 1,2,3,4,6,7,8-HpCDD-13C . 2.00 1 92 1,2,3.6,7,8-HxCDF 1.00 0.92 92 OCDD-13C 4.00 92 2,3.4,6,7,8-HxCDF 1.00 0.90 90 1,2,3,7,8,9-HxCDF 1.00 0.90 90 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 0.92 92 2,3,7,8-TCDD-37Gl4 0.20 89 1,2,3,6,7,8-HxCDD 1.00 0.95 95 1,2,3,7,8,9-HxCDD 1.00 0.95 95

1,2,3,4,6,7,8-HpCDF 1.00 0.90 90 1,2.3,4,7,8,9-HpGDF 1:00, 0.88 88

1,2,3,4,6,7,8-HpCDD 1.00 0.93 93

OCDF 2.00 1.89 94 OCDD 2.00 1.79 89

Qs - Quantity Spiked Qm = Quantity Measured Rec. = Recovery (Expressed as Percent) P = Recovery outside of target range X = Background subtracted value Nn = Value obtained from additional analysis NA = Not Applicable * = See Discussion Report No.....1062382

REPORT OF LABORATORY 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_000202335