Duplicate spiked sample analysis, sample AD28318, Jan 2002

NYC 9/11 Public Portal Document Quantitation Report (QT Reviewed)

Data File : C:\MSDCHEM\1\DATA\121701\28318SD.D Vial: 39 Acq On : 18 Dec 2001 1:17 am Operator: McLean Sample : 1126 spk dupe Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: BENZO.P Quant Time: Dec 18 01:54:02 2001 Quant Results File: 121401.RES

Quant Method : C:\MSDCHEM\1\5973N\121401.M (RTE Integrator) Title : Quantitation For Method 525.2 Last Update : Mon. Dec 17 15:06:05 2001 Response via : Initial Calibration DataAcq Meth : 121401 Internal Standards R.T. Qlon Response Cone Units Dev(Min)

1) Acenaphthene-diO 18.20 164 5442187 5.00 ug/L 0.00 9) Phenanthrene D-10 22.53 188 8380415 5.00 ug/L 0.00 20) Chrysene D-12 3 0.30 240 5506302 5.00 ug/L 0.00

System Monitoring Compounds 2) 1,3-Dimethyl-2 - nitrobenzen 13.13 134 1300108 4.67 ug/L 0.00 Spiked Amount 5.000 Recovery = 93.40%' 19) Triphenyl Phosphate surr 29.58 326 1520243 5.96 ug/L 0.00 Spiked Amount 5.000 Recovery = 119.20% 21) Perylene D-12 surr 34.31 264 3876400 5.32 ug/L 0.00 Spiked Amount 5.000 Recovery = 106.40%

Target Compounds Qvalue 3) Hexachlorocyclopentadiene 15.70 237 552324 3.58 ug/L 98 4) Hexachlorobenzene 21.40 2 84 1.470152 4.08 ug/L 98 5) EPTC 16.18 12 8 2695694 5.20 ug/L 97 6) 2,6-Dinitrotoluene 17.77 165 920610 3.63 ug/L 94 7) 2,4 -Dinitotoluene 18.91 165 1091448 3.53 ug/L 96 8) Molinate 19.09 126 4127063 5.62 ug/L 94 10) Simazine 21.93 2 01 1154584 5.07 ug/L 98 11) Atrazine. 22.05 200 1841058 6.19 ug/L 96 12) Alachlor 2 3.91 160 1668177 5.77 ug/L 98 13) Terbacil 22.87 161 1867449m 7.10 ug/L 14) Acetochlor 23.70 146 1142142 5.42 ug/L 95 15) Metribuzin 23.73 198 1195985 3.08 ug/L 98 16) Metolachlor 24.84 162 5144538 5.52 ug/L 99 17) Butachlor 26.66 160 1467668 5.46 ug/L 85 18) 4,4'-DDE 27.29 246 1312164 4.02 ug/L 98 22) Bis (2-Ethylhexyl) adipate 2 9.52 129 3641409 3.97 ug/L 98 23) Bis (2-Ethylhexyl) phthala 3 0.96 149 6707838 4.02 ug/L 100 24) Benzo (a) pyrene 34.17 252 5456399 5.03 ug/L 97

(#) = qualifier out of range (m) = manual integration 28318SD.D 011402.M Tue Jan 15 14:15:09 2002 Page 1

NYC-WTC_000058055