NYC-WTC_000207942

NYC 9/11 Public Portal Document

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

I ^ace Analytical_________ Method 8290 Analysis Results Tel 612 607 1700 Fax. 612 607 6444

Client ATC ASSOCIATES Clients Sample ID ATC 1112 150M DX2 Lab Sample ID 104041587 Filename F21204B_11 Injected By MRO Total Amount Extracted 1 00 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 11/12/2002 I CAL Date 11/25/2002 Received 11/15/2002 CCal Filename(s) F21204B_01 & F21204B_16 Extracted 11/25/2002 Method Blank ID BLANK 2453 Analyzed 12/05/2002 02 51

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 00200 2 378 TCDF 13C 2 00 81 Total TCDF ND 0 00200 2 378 TCDD 13C 2 00 81 1 2 37 8 PeCDF 13C 2 00 81 2 3 7 8 TCDD ND 0 00200 2 3478 PeCDF 13C 2 00 79 Total TCDD ND 0 00200 1 2 378 PeCDD 13C 2 00 79 1 2 34 78 HxCDF 13C 2 00 102 1 2 3 7 8 PeCDF ND 0 01000 1 2 3678 HxCDF 13C 2 00 105 2 3 4 7 8 PeCDF ND 0 01000 2 346 78 HxCDF 13C 2 00 104 Total PeCDF ND 0 01000 1 2 378 9 HxCDF 13C 2 00 108 1 2 3478 HxCDD 13C 2 00 104 1 2 3 7 8 PeCDD ND 0 01000 1 2 36 78 HxCDD 13C 2 00 106 Total PeCDD ND 0 01000 1 2 346 78 HpCDF 13C 2 00 93 1 2 34 789 HpCDF 13C 2 00 85 1 2 3 4 7 8 HxCDF ND 0 01000 1 2 34 6 78 HpCDD 13C 2 00 77 1 2 3 6 7 8 HxCDF ND 0 01000 OCDD 13C 4 00 83 2 3 4 6 7 8 HxCDF ND 0 01000 1 2 3 7 8 9 HxCDF ND 0 01000 1 234 TCDD 13C 2 00 NA Total HxCDF ND 0 01000 1 2 378 9 HxCDD 13C 2 00 NA

1 2 3 4 7 8 HxCDD ND 0 01000 2 3 7 8 TCDD 37CI4 0 20 83 1 2 3 6 7 8 HxCDD ND 0 01000 1 2 3 7 8 9 HxCDD ND 0 01000 Total HxCDD ND 0 01000

1 2 3 4 6 7 8 HpCDF ND 0 01000 Total 2 3 7 8 TCDD 1 2 3 4 7 8 9 HpCDF ND 0 01000 Equivalence 0 00 ng/m2 Total HpCDF ND 0 01000 (Using ITE Factors)

1 2 3 4 6 7 8 HpCDD ND 0 01000 Total HpCDD ND 0 01000

OCDF ND 0 02000 OCDD ND 0 02000

LRL = Lower Reporting Limit Cone = Concentration (Totals include 2 3 7 8 substituted isomers) I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference A = Detection Limit based on signal to noise measurement S = Saturated signal J = Concentration detected is 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 1065494

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

CITY_21MC100_012155607

NYC-WTC_000207943