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Page 15 of 21 <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> "� <br /> aboratories, Inc. <br /> n e <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 /> M-6A Aqueous GUMS WW 08/06/10 08/07/10 100806502 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 92 95 80-120 2 0-20 <br /> Carbon Tetrachloride 107 106 55-151 1 0-20 <br /> Chlorobenzene 95 96 80-120 1 0-20 <br /> 1,2-Dibromoethane 103 95 77-125 8 0-20 <br /> 1,2-Dichlorobenzene 92 92 78-120 1 0-20 <br /> 1,2-Dichloroethane 107 107 80-120 0 0-20 <br /> 1,1-Dichloroethene 101 106 69-129 5 0-20 <br /> Ethylbenzene 97 97 73-127 1 0-20 <br /> Toluene 93 94 80-120 1 0-20 <br /> Trichloroethene 93 103 67-133 4 0-20 <br /> Vinyl Chloride 87 100 67-133 14 0-20 <br /> Methyl-t-Butyl Ether(MTBE) 103 106 65-131 2 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 />