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Page 45 of 73 <br /> alscience <br /> iv nvironmenta/ Quality Control - Spike/Spike Duplicate <br /> 1 aboratories, Inc. <br /> Blaine Tech Services, Inc. Date Received: <br /> 1680 Rogers AvenueWork Order No: 10-09-0132 <br /> 09/02/10 <br /> San Jose, CA 95112-1105 Preparation: <br /> EPA 50306 <br /> Method: LUFT GC/MS/ EPA <br /> Prosect 3515 Navy Drive, Stockton, CA 8260B <br /> Quality Control Sample ID Date Date MS/MSD Batch <br /> Matrix Instrument Prepared Analyzed Number <br /> 10-09-0168-7 ,Aqueous GC/MS'T09/10/10 09110110 100910S01 <br /> Parameter MS%REC MSD%REC <br /> %REC CL RPD RPD CL Qualifiers <br /> Benzene <br /> Ethylbenzene 102 102 83.120 1 0-20 <br /> Toluene 104 0 0-20 <br /> 103 80-120 0 0-20 <br /> RPD-Relative Percent Difference CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 , TEL: 714 <br /> ( ) 895-5494 . FAX: (714) 894-7501 <br />