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i <br />• <br />Page 10 of 24 <br />alscience <br />nvironmental Quality Control - Spike/Spike Duplicate <br />AN aboratories, Inc. <br />Conestoga -Rovers & Associates <br />Date Received: <br />04/26/08 <br />19449 Riverside Drive, Suite 230 <br />Work Order No: <br />08-04-2322 <br />Sonoma, CA 95476-6955 <br />Preparation: <br />EPA 3550B <br />Method: <br />EPA 80158 (M) <br />Project 3515 Navy Drive, Stockton, CA <br />Date <br />Date MS/MSD Batch <br />Quality Control Sample ID Matrix <br />Instrument <br />Prepared <br />Analyzed Number <br />D -A Solid <br />GC 43 <br />04129/08 <br />04/29/08 080429S03 <br />Parameter MS %REC MSD %REC %REC CL RPD RPD CL Qualifiers <br />TPH as Motor Oil 87 0 64-130 200 0-15 4,3 <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 />