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QC Sample Results <br /> Client: Conestoga-Rovers &Assoc. (Emeryville)/SHELL TestAmerica Job ID: NVL1479 <br /> Project/Site: SAP 135703 <br /> Method: SW846 8260B -Volatile Organic Compounds by EPA Method 8260B (Continued) <br /> Lab Sample ID: 111-3018-BLK1 Client Sample ID: Method Blank <br /> Matrix:Water Prep Type:Total <br /> Analysis Batch: U022226 Prep Batch: 11L3018_P <br /> Blank Blank <br /> Analyte Result Qualifier RL MDL Unit D Prepared Analyzed oil Fac <br /> Benzene ND 0.500 ug/L 12/12/1114:33 12119/1107:55 1.00 <br /> Ethylbenzene ND 0.500 ug/L 12/12/1114:33 12/19/1107:55 1.00 I <br /> Toluene ND 0.500 ug/L 12/12/1114:33 12/19/1107',55 1.00 <br /> Xylenes,total ND 0.500 ug/L 12/12/11 14:33 12/19/11 07:55 1.00 <br /> Methyl lert-Butyl Ether ND 0.500 ug/L 12/12/11 14:33 12/19/11 07'.55 1.00 <br /> Tertiary Butyl Alcohol No 10.0 ug/L 12/12/111433 12/19/1107:551.00 <br /> Diisopropyl Ether ND 0.500 ug/L 12/12111 14:33 12/19/11 07:55 1.00 <br /> Ethyl tert-Butyl Ether ND 0.500 ug/L 12/12/11 14:33 12/19/11 07:55 1.00 <br /> Tart-Amyl Methyl Ether ND 0.500 ug/L 12/12/11 14:33 12/19/11 07:55 1.00 <br /> Blank Blank <br /> Surrogate %Recovery Qualifier Limits Prepared Analyzed oil Fac <br /> 1,2-Dichloroethan"4 99 70.130 12/12/11 14:33 12/19/11 07;55 1.00 <br /> Dibromofluoromethane 106 70-130 12/12/1114:33 12/19/1107:55 1.00 <br /> Toluene-d8 97 70-130 12/12/11 14:33 1211911107 55 1.00 <br /> omoflu 22.22_ ............... 222...70-1 <br /> 0 _. .. .. <br /> 4-Bromofluorobenzene 97 - --- -- 70-130 12/17111 1433 12/79/11 0755 - -1.00 <br /> Lab Sample ID: 11L3018-BS1 Client Sample ID: Lab Control Sample <br /> Matrix:Water Prep Type:Total <br /> Analysis Batch: U022226 Prep Batch: 11L3018_P <br /> Spike LCs LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Benzene 50.0 52.7 ug/L 105 80.121 <br /> Ethylbenzene 50.0 51.0 ug/L 102 80.130 <br /> Toluene 50.0 50.0 ug/L 100 80.126 <br /> Xylenes,total 150 149 ug/L 99 80-132 <br /> Methyl tert-Butyl Ether 50.0 58.9 ug/L 118 72.133 <br /> Tertiary Butyl Alcohol 500 391 ug/L 78 54-150 <br /> 2222 2222 _._...2222. 22.22. .._._.__....... . 222.2. _. __ _ <br /> Diisopropyl Ether 50.0 55.0 ug/L 110 62.137 <br /> Ethyl tert-Butyl Ether 50.0 57.7 ug/L 115 63-135 <br /> Tert-Amyl Methyl Ether 60.0 56.5 ug/L 113 63-135 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4 111 70_130 <br /> Dibromofluoromethane 100 70-130 <br /> Toluene-d8 96 70.130 <br /> 4-Bromofluorobenzene 103 70.130 <br /> Lab Sample ID: 11L3018-MS1 Client Sample ID: MWA0 <br /> Matrix:Water Prep Type:Total <br /> Analysis Batch: U022226 Prep Batch: 111-3018_13 <br /> Sample Sample Spike Matrix Spike Matrix Spike %Rec. <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits <br /> Benzene 9190 2500 10100 MHA ug/L 35 75.133 <br /> Ethylbenzene 96.5 2500 2750 ug/L 106 79.139 <br /> Toluene 80.5 2500 2660 ug/L 103 75.136 <br /> __.. . 2222 .. 2222 _... _ <br /> Xylenes,total - - 128 � �- -- � � 7500 7800 u9/L 104 74-141 <br /> Methyl tert-Butyl Ether 1470 2500 4100 ug/L 105 66-141 <br /> Tertiary Butyl Alcohol 6370 25000 23600 ug/L 69 50.183 <br /> ....... __ _ ._... .____ .2500.-..__..._ ... <br /> Diisopropyl Ether 36.0 2500 2680 ug/L 106 54-147 <br /> TestAmerica Nashville <br /> Page 27 of 48 12/22/2011 <br />