Volatile organic compound wipe sample results, Nov-Dec 2001

NYC 9/11 Public Portal Document

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

^ace Analytical____________ Method 8290 Laboratory Control Spike Results Tel: 612-607-1700 Fax- 61 607-6444

Client - ATC

Lab Sample ID SPIKE-1347 Filename F11201A_05 Matrix WIPE Total Amount Extracted 1 Sample Dilution NA ICAL Date 11/19/2001 Extracted 11/27/2001 CCal Filename(s) F11201A_04 & F11201A_20 Analyzed 12/01/2001 20:51 Method Blank ID BLANK-1344 Injected By BAL

Native Qs Qm % internal ng's Percent isomers (ng) (ng) Standards Added Recovery Rec. 2,3.7,8-TCDF 0.20 0.20 102 2,3,7,8-TCDF-13C 2.00 66 2,3,7,8-TCDD-13C 2.00 71 1,2,3,7,8-PeCDF-13C 2.00 63 2,3,7,8-TCDD 0.20 0.19 96 2,3,4,7,8-PeCDF-13C 2.00 62 1,2,3,7,8-PeCDD-13C 2.00 70 1,2,3,4,7,8-HxCDF-13C 2.00 86 1,2,3,7,8-PeCDF 1.00 0.97 97 1,2,3,6,7,8-HxCDF-13C. 2.00 82 "a 84 2,3,4,7,8-PeCDF 1.00 0.99 99 2,3,4,6,7,8-HxCDF-13C 2.00 1,2,3,7,8,9-HxCDF-13C 2.00 81 1,2,3,4,7,8-HxCDD-13C 2.00 83 1,2,3,7,8-PeCDD 1.00 1.01 101 1,2,3,6,7,8-HxCDD-13C 2.00 88 1,2,3,4,6,7,8-HpCDF-13C 2.00 76 1.2,3,4,7,8,9-HpCDF-13C 2.00 67 1,2,3,4,7,8-H‘XCDF 1.00 1.05 105 1,2,3,4,6,7,8-HpCDD-13C 2.00 65 1,2,3,6,7,8-HxCDF 1.00 1.10 110 OCDD-13C 4.00 45 2,3,4,6,7,8-HxCDF 1.00 1.07 107 1,2,3,7,8,9-HxCDF 1.00 1.04 104 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 1.10 110 2,3,7,8-TCDD-37CI4 0.20 74 1,2,3,6,7,8-HxCDD 1.00 1.06 106 1,2,3,7,8,9-HxCDD 1.00 1.06 106

1,2,3,4,6,7,8-HpCDF 1.00 1.06 106 1,2,3,4,7,8,9-HpCDF 1.00 1.04 104

1,2.3,4,6,7,8-HpCDD 1.00 1.11 111

OCDF 2.00 2.18 109 OCDD 2.00 2.27 114

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.... 01-1051376

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

CITY_21MC100_003106718

NYC-WTC_000185495