PCDD/PCDF wipe sample results, PS 234M, Feb 2002

NYC 9/11 Public Portal Document

FEB-19-02 14',26 FROM-PACE ANALYTICAL 612-607-6444 T-556 P.04/06 F-691 1700 EIrri Street ■ Suite 200 Minneapolis, MN 55414

/ Analytical ' Method 8290 Analysis Results Tel; 612-607-1700 Fax: 612- 607-6444

Client - ATC Client's Sample ID ATC-0129-234M-DX1 Lab Sample ID 103297008 Filename F20215A„05 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 01/29/2002 ICAL Date 01/24/2002 Received 01/31/2002 CCal Filenam©(s) F20215A_01 & F20215A_16 Extracted 02/11/2002 Method Blank ID BLANK-1458 Analyzed 02/16/2002 02:23 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF ND 0.0024 A 2,3,7,8-TCDF-13C 2.00 78 Total TCDF 0.037 0.0020 2,3.7.8-TCDD-13C 2.00 71 1,2,3.7,8-PeCDF-13C 2.00 76 2,3,7,8-TCDD ND 0.0032 A 2,3,4.7,8-PeCDF-13C 2.00 75 Total TCDD 0.120 0.0020 1,2,3,7,8-PeCDD-13C 2.00 71 1.2,3,4,7,8-HxCDF-13C 2.00 120 1,2,3,7.8-PeCDF ND 0.0100 1,2,3,6,7,S-HxCDF-iaC 2.00 80 2,3,4,7,8-PeCDF 0.024 0.0100 J 2,3,4,6,7,6-HxCDF-13C 2,00 102 Total PeCDF 0.088 0.0100 1,2,3.7,8,9-HxCDF-13C 2.00 94 1,2,3.4,7,8-HxCDD-13C 2.00 98 1,2,3,7,8-P6CDD 0,015 0.0100 J 1.2,3,6,7,8-HxCDD-13C 2.00 100 Total PeCDD 0.150 0.0100 1,2,3.4,6,7,8-HpCDF-13C 2.00 88 1,2,3,4,7.8.9-HpCDF-13C 2.00 71 1,2.3.4.7.8-HxCDF 0.017 0.0100 E 1,2,3,4,6,7,8-HpCDD-13C 2.00 80 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 52 2,3,4,6,7.8-HxCDF 0.021 0.0100 J 1,2,3,7,8,9-HxCDF 0.012 0.0100 J 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF 0.086 0.0100 1,2,3,7,8,9-HxCDD-13C 2.00 NA 1,2,3,4,7,8-HxCDD 0,015 0.0100 J 2,3,7,8-TCDD-37CI4 0.20 74 1,2,3.6.7.8-HxCDD 0.014 0.0100 J 1,2,3.7,8,9-HxCDD 0.013 0-0100 J Total HxCDD 0.380 0.0100

1,2.3.4,6,7,8-HpCDF 0.030 0.0100 J Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF 0.016 0.0100 I Equivalence: 0.027 ng/m2 Total HpCDF 0.030 0,0100 J (Using ITE Factors) 1,2,3,4,6,7,8-HpCDD 0.036 0.0100 I Total HpCDD 0.043 0,0100 J

OCDF OCDD 0.030 0.074 0,0200 I 0,0200 1 k LRL = Lower Reponing Limit Cone = Concentration (Totals include 2,3,7,8-sut)Stituted Isomers) I = interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interforence A = Detection Limit based on signal-to-nolse measurement S = Saturated signal J ~ Concentration detected Ie below the calibration range ND = Not Detected B = Less than 10 times higher than method blank level NA = Not Applicable P = Recovery outside of target range NC = Not Calculated Nn - Value obtained from additional analysis • = See Discussion Report No.... 02-1053614

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

CONFIDENTIAL, CITY_21MC100_003444477

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000177808