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BP EXPLORATION & OIL, INC. <br /> ENVIRONMENTAL RESOURCE MANAGEMENT <br /> DATA REVIEW CHECKLIST <br /> BP Site Number: 11246 <br /> ERM Contract: H405058 <br /> Sampling Date: 08/12/98 <br /> Matrix Description: Soil <br /> Date Final Report Received: 9/8/98 <br /> Laboratory & Location: SPL, Houston, Texas <br /> Yes No N/A <br /> 1. is BP contract release number <br /> consistent with analytical report? —X- <br /> 2. Was report submitted within the <br /> specified timeframe? X <br /> 3. Does report agree with the COC? —X- <br /> 4. Are units consistent with the given matrix? _X_ <br /> 5. Were any target analytes/compounds <br /> detected in blanks (i.e., trip or equipment)? X <br /> 6. Are duplicate water samples within 30%? X <br /> 7. Are holding times met? X <br /> 8. Are surrogates within limits using laboratory <br /> criteria? X <br /> 9. Are MS/MSD acceptable using laboratory See Below <br /> criteria? <br /> 10. Are LCS results acceptable using laboratory <br /> criteria? X <br /> MSD % recovery and relative % difference value for benzene in a matrix spikes was outside <br /> QC range due to matrix interference. MS/MSD limits are advisory only; as stated in SW-846, <br /> Section 8.7 to 8.8, if the MS/MSD results fall outside the advisable ranges, a laboratory <br /> control samples (LCS) must be analyzed and fall within those ranges. LCS results are within <br /> quality control Iimits. <br /> Data Validation Completed by: Brady Nagle <br /> (signature): <br /> Date: G <br />