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HOUSTON LABORATORY <br /> ' 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TX 77054 <br /> Quality Control Report (713)660-0901 <br /> Shell Oil Company <br /> INC#N/A <br /> Analysis: Semivolatile Organics by Method 8270C WorkOrder: 04061001 <br /> p.Method: SW8270C Lab Batch ID: 39054 <br /> Matrix Spike MS 1 Matrix Spike Duplicate MSD <br /> ' Sample Spiked: 04060961-10 <br /> RunlD: P_040701A-2296862 Units; ug/kg <br /> Analysis Date: 07/01/2004 20:35 Analyst: GO <br /> Preparation Date: 06/29/2004 11:24 Prep By: DMN Method SW3550B <br /> Analyte Sample MS MS MS% MSD MSD MSD°/a RPD RPD Low High <br /> Result Spike Result Recovery Spike Result Recovery Limit Limit Limit <br /> Added Added <br /> Bis(2-chloroethoxy)methane -N D -540 540 63.7 848 460 54.2 16.0 <br /> 460 33 i 84 <br /> Bis(2-chloroethyl)ether ND 847 4701 55.5 848 330 38.91 35,01 601 281 158 <br /> Bis(2-chloroisopropyi)ether NDI 847 450 53.11 848J 2901 34.2- 1 43.21 60 361 166 <br /> Bis(2-ethyfhexyf)phthalate NDJ B471 6201 73.21 W1 6001 70.81 3.281 601 8 158 <br /> Butyl benzyl phthalate ND 847 560 66.1 848 540 63.7 3.64 60 1 152 <br /> Carbazole -NDI 847 6101 72.01 848J 570 67,21 6.7EIL 60 451 135 <br /> Chrysene NDI 847 580 68.4 B481 5601 66.01 3.51 j 60 17F 168 <br /> Di-n-butyl phthalate I NDI 8471 6601 77.91 8481 6201 73.1j 6,251 601 11 118 <br /> Di-n-octyl phthalate INDI 847 6101 72.01 848 5901 69.61 3,331 601 41 146 <br /> Dibenz(a,h)anthracene NDI 847 550 64.9 8481 5101 60.11 7.55J 60 1 227 <br /> Dibenzofuran ND 8471 5101 60.21 8481 4601 54.2 10.31 601 451 135 <br /> Diethyl phthalate NDI 8471 5601 66.11 8481 480 56.61 15.41 601 11 114 <br /> Dimethyl phthalate NDJ 847 5501 64.91 848 480 56.61 13.6 60 1 112 <br /> Fluoranthene ND 8471 6101 72.0 9481 5701 67.21 6.781 601 26 137 <br /> Fluorene NDI 8471 5201 61.41 8481 4801 56.6 8.001 601 451. 135 <br /> Hexachlorobenzene ND 8471. 6001 70.81 8481 560 66.01 6.90J 601 11 152 <br /> Hexachlorobutadiene NDJ 847 510 60.2 8481 3101 36.61 48.81 60 20 140 <br /> Hexachlorocyclopentadiene ND 8471 4701 55.51 8481 370 43.6 23.81 601 11 152 <br /> Hexachioroethane <br /> NDI 8471- 410 48.4 848 200 23.6 <br /> 68.9*1 60 <br /> 301 140 <br /> Endeno(1,2,3-cd)pyrene NDI 847 550 64.91 848 5201 61.3 <br /> 5.61 601 11 171 <br /> Isophorone ND <br /> 8471 5201 61.4 <br /> 9481 4401 51.91 16.71 60 21 <br /> 196 <br /> N-Nitrosodi-n-propylamine NDI 8471 4801 56.61 S481 380 44-8j 23.31 38 11 230 <br /> N-Nitrosodiphenylamine NDI 169DI 12001 70.81 17001 1100 64-91 8.70 60 451 135 <br /> Naphthalene NDI 847 460 54.31 848J 3301 38.9 32-9j 60 21 133 <br /> Nitrobenzene NDJ B471 4701 65.51 8481 360 42.5 26.51 601 351 180 <br /> Pentachlorophenol NDI 8471 6301 74.31 8481 590 69-61 6.56 501 141 176 <br /> Phenanthrene N01 847 5901 69.61 848J 550 64.9 7.02 601 451 135 <br /> Pheriol ND 8471 480j 56.61 8481 440 51-91 8.70 42 5 112 <br /> Pyrene NDJ 8471 5301 62.51 8481 510 60.1 3.85 31 26 F127 <br /> Pyridine NDI 847 380 44.8 848 7 <br /> 2 0 31.$ <br /> 33.8 601 1 150 <br /> n <br /> 2-Meth 1 h ' <br /> y p e of ND 47 <br /> 8 540 <br /> 63.71 Wj 4801 56.6 11-81 60 40 160 <br /> Qualifiers: NDN-Not Detected at the Reporting Limit Ml-Matrix Interference <br /> B-Analyte detected in the associated Method Blank D-Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL *-Recovery Outside Advisable QC Limits <br /> NIC-Not Calculated-Sample concentration is greater than 4 times the amount of spike added.Control limits do not apply. <br /> The percent recoveries for QC samples are correct as reported.Due to significant figures and 04061001 Page 48 <br /> rounding,the reported RPD may differ from the displayed RPD values but is correct as reported. <br /> - 719104 3:07:02 PM <br /> II <br />