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Page 16 of 21 <br /> alscience �o ; yo; <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> ne <br /> DPRA Zymax Forensics Date Received: 08/05/10 <br /> 600 South Andreasen Drive, Suite B Work Order No: 10-08-0463 <br /> Escondido, CA 92029-1917 Preparation: EPA 50308 <br /> Method: EPA 82608 <br /> Proiect 41922 / Nestle Ripon <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 10-08-0504-5 Aqueous GUMS WW 08/07/10 08/07/10 100807501 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 82 83 80-120 1 0-20 <br /> Carbon Tetrachloride 112 107 55-151 5 0-20 <br /> Chlorobenzene 102 100 80-120 2 0-20 <br /> 1,2-Dibromoethane 102 95 77-125 7 0-20 <br /> 1,2-Dichlorobenzene 100 95 78-120 5 0-20 <br /> 1,2-Dichloroethane 105 98 80-120 7 0-20 <br /> 1,1-Dichloroethene 96 97 69-129 1 0-20 <br /> Ethylbenzene 104 103 73-127 2 0-20 <br /> Toluene 99 97 80-120 2 0-20 <br /> Trichloroethene 105 102 67-133 3 0-20 <br /> Vinyl Chloride 95 104 67-133 9 0-20 <br /> Methyl-t-Butyl Ether(MTBE) 102 96 65-131 6 0-22 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 FAX: (714) 894-7501 <br />