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� t <br /> Results Report and First Quarter 2001 Groundwater Monitoring Report <br /> Moore Petroleum Bulk Plant,5441 F Street,Banta,California <br /> Page 6 <br /> I <br /> • MW-1: TPHd and MTBE were the only detected constituents both at 2,400 ug/L. <br /> TPHd was detected for the first time since April 1998 and MTBE decreased from <br /> 4,600 ug/L last quarter. All other constituents were below detection limits. <br /> • MW-3: TPHd was detected for the first time since October 1995 at 750 ug/L. All <br /> other constituents were below detection limits. <br /> • MW-4A: MTBE and TAME were the only detected constituents at 160 ug/L and 15 <br /> t ug/L, respectively. All other constituents that were detected last quarter have <br /> decreased to below detection limits. <br /> MW-7: TPHg and TPHd were detected at 2,200 and 2,700 ug/L, respectively. An <br /> increase for both TPHg and TPHd from 370 ug/L and 1,700 ug/L, respectively. <br /> BTEX increased from last quarter to this quarter except total xylenes, which remain <br /> non-detect. All oxygenates remain non-detect. <br /> • MW-8: TPHg and TPHd were detected at 3,500 and 1,700 ug/L. An increase for <br /> TPHg this quarter and no change for TPHd. BTEX increased this quarter from last <br /> quarter. MTBE decreased this quarter to 300 ug/L, TBA and ETBE were detected <br /> for the first time at 100 ug/L and 9.9 ug/L, respectively, since October 1999, and <br /> TAME increased this quarter to 19 ug/L from 8.7 ug/L. <br /> • MW-9: TPH was detected at 72 u . <br /> TPHg g/L, a decrease from 99 ug/L last quarter. TPHd � <br /> fell below detection limits from 330ug/L last quarter. BTEX are below detection <br /> limits except ethylbenzene at 0.81 ug/L, a decrease from last quarter and total xylenes <br /> decreased from 2.1 ug/L to non-detect this quarter. No oxygenates were detected <br /> during this quarter. <br /> • MW-10: TPHg increased to 710 ug/l and TPHd decreased significantly to 3,300 ug/L <br /> this quarter. BTEX increased this quarter except toluene, which was non-detect. <br /> MTBE was the only oxygenate detected at 11 ug/L, and was detected for the first <br /> time. <br /> • MW-11: TPH motor oil was the only detected analyzed constituent at 430 ug/L and <br /> MTBE decreased to below detection limits this quarter. <br /> • MW-12: TPH motor oil was the only detected analyzed constituent at 190 ug/L except <br /> for MTBE, which increased to 210 ug/L this quarter. <br /> 3 <br />