NYC-WTC_000195960

NYC 9/11 Public Portal Document

H. A. Bader, Consultants TLI Project; 56392 Method 8290 PCDDZPCDF Analysis (b) Client Sample; 610 Analysis File: W010208

Internal Standards Amt. (ng) % Recovery QC Limits Ratio RT Flags

'^Cii-2,3,7,8-TCDF 3.3 82.2 40%-130% 0.75 25:54 '’C,:-2,3,7,8-TCDD 3.3 82.3 40%-! 30% 0.79 26:37 '’C„-1.2,3,7,8-PeCDF 3.6 91.1 40%-130% 1.50 29:51 “Cirl,2,3,7,8-PeCDD 3.6 90.8 40%-130% 1.51 30:53 11-1,2,3,6,7,8-HxCDF 3.1 76.9 40%-130% 0.50 33:25 '’Cu-1.2.3,6,7,8-HxCDD 3.3 83.3 40%-130% 1.19 34:05 ■’C,2-1,2,3,4,6,7,8-HpCDF 2.4 59.0 25%-1307o 0.43 36:18 ’’C,2-1,2,3,4.6,7,8-HpCDD 3.4 84.8 25%-130% 1.04 37:19 '’C,2-1,2,3,4,6.7,8,9-OCDD 5.3 65.8 25%-130% 0.88 40:53

Surrogate Standards (Type B) Amt. (ng) % Recovery QC Limits Ratio RT Flags J '’C,1-2,3,4,7,8-PeCDF 3,9 97.3 40%-130% 1.53 30:33 '’C,rl.2.3.4.7.8-HxCDF 2,9 71.9 40%-I30% 0.50 33.19 '’Cij-l,2,3,4,7,8-HxCDD 3.2 80.8 40%-130% 1.21 34:00 '’C,:-1.2,3,4,7,8,9-HpCDF 3,0 74.0 25%-I30% 0.44 37:48

I Other Standard Amt. (ng) % Recovery QC Limits RT Flags

J’Cl4-2,3,7,8-TCDD 0.36 88.8 40%-130% 26:38

Alternate Standards (Type B) Amt. (ng) % Recovery QC Limits Ratio RT Flags

'’C,i-1.2.3.7.8,9-HxCDF 3.1 77.5 40%-130% 0.51- 34:39 ■’C,1-2,3,4.6,7.8-HxCDF 3.2 80.8 40%-130% 0.50 33:54

Recovery Standards Ratio RT Flags

”C,2-1,2,3,4-TCDD 0.83 26:27 '’C,2-I,2,3,7,8,9-HxCDD 1.27 34:24

Data Reviewer; 01/17/2002

Page 2 of 2 Mfn.PSR »l IKI LARS 6 IS dim

Triangle Laboratories, Inc.® 801 Capitola Drive • Durham, North Carolina 27713 Printed; 14;35 01/17/2002 Phone; (919) 544-5729 • Fax; (919) 544-5491 306

CITY_21MC100_003114078

NYC-WTC_000195961