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Page 77 of 82 <br /> alscience <br /> =nvironmental Quality Control - LCS/LCS Duplicate <br /> Aw aboratories, Inc. <br /> Parsons Date Received: N/A <br /> 2121 North California Blvd., Suite 500 Work Order No: 08-07-0848 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 3545 <br /> Method: EPA 8310 <br /> Project: Former Tracy MGP <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-07-002-1,079 Solid HPLC 5 07/11/08 07/15/08 08071111-05 <br /> Parameter LCS%REC LCSD%REC %REC CL ME CL RPD RPD CL Qualifiers <br /> Naphthalene 144 139 40-160 20-180 4 0-20 <br /> Acenaphthylene 87 85 40-160 20-180 3 0-20 <br /> Acenaphthene 88 83 40-160 20-180 5 0-20 <br /> Fluorene 90 86 40-160 20-180 4 0-20 <br /> Phenanthrene 91 88 40-160 20-180 3 0-20 <br /> Anthracene 92 89 40-160 20-180 3 0-20 <br /> Fluoranthene 91 89 40-160 20-180 3 0-20 <br /> Pyrene 95 92 40-160 20-180 3 0-20 <br /> Benzo(a)Anthracene 102 99 40-160 20-180 3 0-20 <br /> Chrysene 106 102 40-160 20-180 3 0-20 <br /> Benzo(b)Fluoranthene 105 101 40-160 20-180 3 0-20 <br /> Benzo(k)Fluoranthene 108 105 40-160 20-180 4 0-20 <br /> Benzo(a)Pyrene 101 98 40-160 20-180 3 0-20 <br /> Dibenz(a,h)Anthracene 105 101 40-160 20-180 4 0-20 <br /> Benzo(g,h,i)Perylene 105 101 40-160 20-180 4 0-20 <br /> Indeno(1,2,3-c,d)Pyrene 102 99 40-160 20-180 3 0-20 <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 />