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Report:Groundwater-quality Monitoring—July 27,2004: 7500 West Eleventh Street, Tracy, C.4. Page 14 3.0 MONITORING OF FLOATING PRODUCT On July 26, 2004, Monitoring Wells MWFP-1 through MWFP-5 and groundwater- quality Monitoring Wells MW-7, MW-13 and MW-14 were checked for the presence of LNAPL floating on the groundwater by slowly lowering a hydrocarbon/water interface probe into each well. As is recorded in Table 3, none was detected in any of those wells. (Note,however, that since the groundwater elevation in Monitoring Well MW-7 has risen ,.- from the low level of 38.34 ft. on January 26, 2004, the concentrations of gasoline and its components have risen in concert with the groundwater table, so that by July 26, 2004, the concentration of TPHg in that well was 37,000 µg/L. If this trend continues, it is likely that those analytes will exceed their saturation concentrations in water and LNAPL may reappear in that well.) f j 'i sic i ';