NYC-WTC_000207942

NYC 9/11 Public Portal Document

Pace Analytical Services Ino 1700 Elm Street Suite 200 Minneapolis MN 55414

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

Client ATC ASSOCIATES Clients Sample ID ATC 1112 150M DX1 Lab Sample ID 104041579 Filename F21204B_10 Injected By MRO Total Amount Extracted 1 00 m2 Matrix WIPE /o 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 02 Native Cone EMPC LRL Internal ngs Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2 3 7 8 TCDF ND 0 00200 2 3 78 TCDF 13C 2 00 95 Total TCDF ND 0 00200 2 378 TCDD 13C 2 00 95 1 2 37 8 PeCDF 13C 2 00 83 2 3 7 8 TCDD ND 0 00200 2 34 78 PeCDF 13C 2 00 80 Total TCDD 0 0054 0 00200 J 1 2 37 8 PeCDD 13C 2 00 82 1 2 34 78 HxCDF 13C 2 00 97 1 2 3 7 8 PeCDF ND 0 01000 1 2 3678 HxCDF 13C 2 00 103 2 3 4 7 8 PeCDF ND 0 01000 2 3 4678 HxCDF 13C 2 00 99 Total PeCDF ND 0 01000 1 2 378 9 HxCDF 13C 2 00 103 1 2 3478 HxCDD 13C 2 00 97 1 2 3 7 8 PeCDD ND 0 01000 1 2 3678 HxCDD 13C 2 00 101 Total PeCDD ND 0 01000 1 2346 78 HpCDF 13C 2 00 88 1 234789 HpCDF 13C 2 00 80 1 2 3 4 7 8 HxCDF ND 0 01000 1 2 34 6 78 HpCDD 13C 2 00 75 1 2 3 6 7 8 HxCDF ND 0 01000 OCDD 13C 4 00 78 2 3 4 6 7 8 HxCDF ND 0 01000 1 2 3 7 8 9 HxCDF ND 0 01000 1 2 34 TCDD 13C 2 00 NA Total HxCDF ND 0 01000 1 2 3789 HxCDD 13C 2 00 NA

1 2 3 4 7 8 HxCDD ND 0 01000 2 3 7 8 TCDD 37CI4 0 20 93 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 00060 ng/m2 Total HpCDF ND 0 01000 (Using ITE Factors) 1 2 3 4 6 7 8 HpCDD 0 0290 0 01000 J Total HpCDD 0 0570 0 01000 J OCDF ND 0 02000 OCDD 0 3200 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_012155606

NYC-WTC_000207942