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Page 12 of 23 <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> Parsons Date Received: 10/21/08 <br /> 2121 North California Blvd., Suite 500 Work Order No: 08-10-1812 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 3545 <br /> Method: EPA 8310 <br /> Proiect Tracv SPCC/444692 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 08-10-1832-38 Solid HPLC 6 10/20/08 10/22/08 081022S12 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Naphthalene 40 52 40-160 25 0-20 4 <br /> Acenaphthylene 40 63 40-160 44 0-20 4 <br /> Acenaphthene 47 57 40-160 19 0-20 <br /> Fluorene 42 58 40-160 31 0-20 4 <br /> Phenanthrene 6 63 40-160 64 0-20 3,4 <br /> Anthracene 46 67 40-160 37 0-20 4 <br /> Fluoranthene 0 67 40-160 70 0-20 3,4 <br /> Pyrene 0 72 40-160 71 0-20 3,4 <br /> Benzo(a)Anthracene 39 72 40-160 48 0-20 3,4 <br /> Chrysene 38 74 40-160 50 0-20 3,4 <br /> Benzo(b)Fluoranthene 29 67 40-160 51 0-20 3,4 <br /> Benzo(k)Fluoranthene 52 83 40-160 46 0-20 4 <br /> Benzo(a)Pyrene 25 65 40-160 53 0-20 3,4 <br /> Dibenz(a,h)Anthracene 48 74 40-160 42 0-20 4 <br /> Benzo(g,h,i)Perylene 29 75 40-160 51 0-20 3,4 <br /> Indeno(1,2,3-c,d)Pyrene 21 68 40-160 58 0-20 3,4 <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 />