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2852 Alton Ave Irvine CA 92606 (949)261 1022 FAX(949)261 1228 <br /> Del MarAnalytical 1014E Cooley it Suite A Colton CA 91406 (909)370-46671844 FAX(909)370 1046 <br /> 7277 Hayvenhurst Suite B 72 Van Nuys CA 91406 (818)779 1844 FAX(818)779 1843 <br /> 9484 Chesapeake Or Suite 805 San Diego CA 92123 {858)505 9596 FAX{858)505 9689 <br /> ' 9830 South 51 si St Suite B 120 Phoenix AZ 85044 (480)785 0043 FAX 1480)785 0851 <br /> CORRECTIVE ACTION REPORT <br /> ' <br /> Department GC <br /> p Date 7117101 <br /> ' Method EPA 8015 Matrix Water <br /> QC Batch I 1 G 1404 <br /> Identification and Definition of Problem <br /> The Method Blank (MB), LCS, and LCSD were outside acceptance criteria The <br /> MB contained Extractable Fuel Hydrocarbons at 0 75 mgfl- and the method <br /> reporting limit is 0 50 mg/L The LCS and LCSD recoveries were 148% and 144% <br /> respectively and the upper control limit is 115% <br /> Determination of the Cause of the Problem <br /> It is suspected that the QC samples were contaminated by samples in the batch with <br /> high analyte concentration <br /> ' Corrective Action Taken <br /> All sample results are potentially biased high and can be considered estimates only <br /> ' There was insufficient sample available for re-analysis The data has been reported <br /> with an 'A-01' qualifier referencing this corrective action report <br /> 1 <br /> ' Quality Assurance Approval L�-�-f `" LZ T 16 <br /> 1 <br /> • <br />