NYC-WTC_000189289

NYC 9/11 Public Portal Document

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

^ace Analytical___________ Method 8290 Laboratory Control Spike Results Tel 612 607 1700 Fax 612 607 6444

Client ATC ), Lab Sample ID SPIKE 1578 Filename F20416B_02 Matrix WIPE Total Amount Extracted 1 m2 Dilution NA ICAL Date 04/12/2002 Extracted 04/12/2002 CCal Filename(s) F20416B_01 & F20416B_13 Analyzed 04/17/2002 04 26 Method Blank ID BLANK 1566 Injected By BAL

Native Qs Qm % Internal ng s Percent Isomers (ng) (ng) Bet. Standards Added Recovery 2 3 7 8 TCDF 0 20 0 21 103 2 378TCDF 13C 2 00 72 2 37 8 TCDD 13C 2 00 71 1 2 3 78 PeCDF 13C 2 00 72 2 3 7 8 TCDD 0 20 0 21 103 2 3478 PeCDF 13C 2 00 72 1 2 378 PeCDD 13C 2 00 77 1 2 3 478 HxCDF 13C 2 00 97 1 2 3 7 8 PeCDF 1 00 1 00 100 1 2 3 678 HxCDF 13C 2 00 60 1 J 2 3 4 7 8 PeCDF 1 00 1 03 103 2 34678 HxCDF 13C 1 2 378 9 HxCDF 13C 2 00 2 00 79 82 1 2 34 78 HxCDD 13C 2 00 89 1 2 3 7 8 PeCDD 1 00 1 03 103 1 2 36 7 8 HxCDD 13C 2 00 77 1 2 3467 8 HpCDF 13C 2 00 64 1 2 347 8 9 HpCDF 13C 2 00 67 1 2 3 4 7 8 HxCDF 1 00 1 02 102 1 2 3467 8 HpCDD 13C 2 00 66 1 2 3 6 7 8 HxCDF 1 00 1 05 105 OCDD 13C 4 00 55 2 3 4 6 7 8 HxCDF 1 00 1 05 105 1 2 3 7 8 9 HxCDF 1 00 1 04 104 1 234TCDD 13C 2 00 NA 1 23789 HxCDD 13C 2 00 NA 1 1 2 3 4 7 8 HxCDD 1 00 1 10 110 2 3 7 8 TCDD 37CI4 0 20 78 J 1 2 3 6 7 8 HxCDD 1 2 3 7 8 9 HxCDD 1 00 1 00 1 12 1 09 112 109 I tJ 1 2 3 4 6 7 8 HpCDF 1 00 1 11 111 1 2 3 4 7 8 9 HpCDF 1 00 1 08 108

1 2 3 4 6 7 8 HpCDD 1 00 1 11 111

OCDF 2 00 1 96 98 OCDD 2 00 2 15 108

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 02 1055555

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

CITY_21MC1OO_OO3O85243

NYC-WTC_000189294