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BP EXPLORATION & OIL, INC. <br /> ENVIRONMENTAL RESOURCE MANAGEMENT <br /> DATA REVIEW CHECKLIST <br /> BP Site Number: 11192 <br /> ERM Contract: H339131 <br /> Sampling Date: 7/7/98 <br /> Matrix Description: Water <br /> Date Final Report Received: 7/24/98 and 10/7/98 <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 /> 0 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? See Below <br /> 9. Are MS/MSD acceptable using laboratory —X— <br /> criteria? <br /> 10. Are LCS results acceptable using laboratory <br /> criteria? —X— <br /> Analysis of one of the two surrogates (1,4-Difluorobenzene) during TPH-G analysis of S-5, S- <br /> 6, and S-7 were outside quality control limits due to matrix interference; the quality control <br /> for that method specifies that only one of two surrogate should be within the specified <br /> recovery range. <br /> Data Validation Completed by: Brady Nagle <br /> (signature): Rzpvtl 4A <br /> Date: 1 p <br />