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' 09 January 2004 <br /> • AGE-NC Project No 97-0326 <br /> Page 4 of <br /> well,no longer`drowned',thus providing a more accurate static ground water measurement <br /> The ground water elevation is also at the lowest level recorded since ground water <br /> monitoring began in 1998 <br />' High concentrations of TPH-g were detected in ground water samples collected from wells <br /> MW-2 and MW-3, while free product was found in MW-1 BTEX compounds and MTBE <br /> are at concentrations exceeding California's Maximum Contaminant Levels for these <br />' products in drinking water The results of this sampling event are within the range of <br /> concentrations historically seen at this site for these analytes <br />' 1,2-DCA was detected in well MW-3 for the fourth consecutive time in the past eleven <br /> sampling events,and detected in well MW-2 for the second time In the past thirteen sampling <br /> events <br /> • Neither the vertical nor horizontal extent of impacted ground water have been delineated at <br /> the site <br /> lie5.0. RECOMMENDATIONS <br /> Based on the findings of this investigation, AGE recommends continuation of the quarterly ground <br /> water monitoring program, as required by the EHD <br /> On 03 September 2002, the EHD approved the AGE-prepared Additional Monitoring Well <br /> Installation Work Plan dated 16 July 2002 to install three single-level and five multi-level <br /> monitoring wells at the site to monitor Impacted ground water On-site well construction is <br /> scheduled for completion during the first quarter 2004 <br /> 6 0. LIMITATIONS <br />' Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br />' analytical results provided by an independent laboratory Evaluation ofthe hydrogeologic conditions <br /> at the site for the purpose of this investigation were made from a limited number of available data <br /> points(I e ground water samples)and subsurface conditions may vary away from these data points <br />' No other warranty, expressed or implied, is made as to the professional interpretations,opinions and <br /> recommendations contained In this report <br />' Advanced CeoEnvironmental,Inc <br />