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First Quarter 1998 Status Report - Former Discovery Chevrolet <br /> April 27, 1998 <br /> Disposition of Well Pure Water <br /> Purge water generated during the first quarter 1998 sampling event was discharged to <br /> properly labelled drums and stored at the site pending disposal. <br /> DISCUSSION <br /> During the first quarter 1998 groundwater was measured 0.60 to 0.67 feet above levels <br /> measured during the fourth quarter 1999. During this quarter, groundwater appeared to now <br /> toward the north at a gradient of 0.004 ft/ft. These data appear generally consistent with <br /> historical monitoring data. <br /> TPHg or MTBE were not detected in wells MW-4 or MW-5. Benzene was not detected in <br /> wells MW-3 or MW-5. Concentrations of TPHg and MTBE detected in wells MW- 1 and <br /> MW-2 increased slightly from concentrations detected in the previous quarter. <br /> Concentrations of benzene detected in wells MW-1 and MW-2 during the first quarter <br /> decreased from concentrations detected in the previous quarter. Benzene detected in well <br /> MW-4 increased from the previous quarter. However, this concentration is below the <br /> primary drinking water standard maximum contaminant level of 1.0 ppb. <br /> = <= NEXTQUARTER'S ACTIVITIES <br /> Activities planned for the second quarter 1998 at the subject site include: <br /> e Monitor DTW in all wells. Purge and sample wells MW-1, MW-2, MW-4, and <br /> MW-5, and analyze the groundwater samples for TPHg, BTBX, and MTBE. <br /> 949146.05-5 4 <br />