NYC-WTC_000204954

NYC 9/11 Public Portal Document

1700 am Street - Suits 200 Minneapolis, MN 55414

Tel: 512-607-1700 Far 612- 607-6444 "— Client -ATC

Client’s Sample ID ATC-0427-STY-DX23 Lab Sample'ID 103513453 Filename Y f^C^24A_10 Injected By MRO Total Amount Extractad 0.04 g Matrix DUST % Moisture NA Dilution NA Dry Weight Extracted NA Collected 04/27/2002 ICALDate 7 05/04/2002 Received 05/01/2002 CCal Filename(s) F2O524A_O1 & F2Q524A_15 Extracted 05/20/2002 Method Blank ID 7 - 7 / BLANK-1633 . . /Vialyzed 05/24/2002 16:37 Cone EMPC LrL Internal . ng's Percent < Isomars ng/Kg ng/Kg ng/Kg Standards Added Recovery ..r 2.3,7.8-TCDF ND — 50 : 2,3.7,8-TCDF-13C 2.00 ■Y TotaiTCDF , , 200 — : 50 J 2.3.7.8-TCDD-13C 2.00 1,2,3,7.8-PeCDF-13C‘‘ 2.00 2,3,7,8-TCDD . Total TCDD ; 7 ND 190 2.3,4,7,S-PeCDF-13C 50 BJ 1.2,3.7,S-PeCDD-13C 1'2.00 22 1.2,3.4,7,8-HXCDF-13C 2.00 7 ■ ■ 1,2.3.7,a-PeCDF 250 1,2,3,6.7.8-HxCDF-.13C 2.00 (Y2,3,4,7.fi.PeCDF 250 2,3,4,6.7,8-HxCDF-13C 2.00 - Total PeCDF; 7 ■ 7 ^R ND ■ 250 1,2,3,7,8,9-HxCDF-l3C 5-22 2.00 7 <7.: 2-2° 1,2,3.4,7,8-HxCDD-13C 1,2.3,7.R-PeCDD 250 i " 1,2,3,6,7,8-HxCDD-13C 7:7 Total PsCDD ND 250 1,2,3.4.6.7,8-HpCDF-13C 2.00 62 7. 1,2.3,4,7,8,9-HdCDF-13G 2.00 44 i,2,3,4,7.8-HxCDF

I / ND Y ; 1,2,3,4,6.7,8-HpCDD-13G 2.00 ' 46 . nd. ■ Y OCDD-13C 7 7: 7 4.00 7 45 Y 2,3,4,6,7,8-HxCDF mR 1,2,3,7,8.3-HxCDF V 7 ND 7 1.2.3,4-TCDD-13C 2.00,. NA' Total HxCDF - ND? 7; 1,2.3.7.a.9-HxCDD-13CY 2.00 ; - > NA 7 1,2,3.4,7.8-HxCDD y ND 250 2,3,7,8-TCDD-37C14 0.20 85 : 7 1,2,3,6,7,8-HxCDD Y Y ND 1,2.3,7,8,9-HxCDD /S Total HxCDD ; ND 350 ■ 1^; 7 250 J:.

TotalHpCDF -2y: ,77 Mg ND IS 250 Total 2,3,7.8-TCDD Equivalence: 6.0 ng/Kg (Using ITE Factors)

1,2,3.4,6.7,8-HpCDD - 36D 250 J TotalHpCDD . 7. Y 840 250 J OCDF ND 500 OCDD 2400 500 BJ Results reported on a total weight basis LRL = Lower Reporting Limit ■ 7 Cone = Concentration (Totals Include 2.3.7,8-substitutad isomers) I = Intarferenoa 7'77- EMPC = Estimatad Maximum Possible Concentration E = PCDE Interference A = Detection Limit based on signal-lo-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 ot target range NC = Not Calculated 7 7 , Nn a Value obtained fro.m additional analysis • = See Discussion ■ Report No.... 02-1057132'7''7-

REPORT OF LABORATORY ANALYSIS This report shall not be reproducea, except in full, without th© wrlnen consent of Pace Analytical Services. Inc.

CITY_21MC100_008987366 NYC-WTC_000204965