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QUARTERLY GROUNDWATER MONITORING AND SAMPLING REVIEW <br /> QUARTERLY GTS MONITORING AND SAMPLING REVIEW <br /> 4614 W . TURNER RD , LODI <br /> PAGE 3 <br /> MW 3 early in the monitoring program consistently showed low <br /> levels of contaminants , with a downward trend. In the three <br /> quarterly samplings previous to this report , MW 3 has shown only <br /> trace amounts or , more often, non detectable levels of <br /> contaminants . The current results of non-detect suggest that the <br /> plume as retreating The current results also suggest that the <br /> rising water table over the last years has not packed up- <br /> contaminants in the soil . Therefore, the retreat of the plume is <br /> not likely to reverse itself . <br /> MW-1 ( currently the extraction well providing the influent to the <br /> GTS) is closest to the site of the former underground tank, and <br /> has up to this time consistently shown the highest levels of <br /> contaminants . This well has also shown a continuing downward <br /> trend in contaminants , especially since the installation of the <br /> GTS. The current non-detectable level of all contaminants is a <br /> very good sign Last quarter showed 100 ug/ml TPHg , so we will <br /> need further quarterly testing to determine if the non-detect <br /> level is a temporary or long term condition <br /> Effluent from the GTS continues to show no traces of <br /> contaminants . <br /> The next quarterly sampling will occur in February , 1994 . At <br /> that time, an abbreviated round of sampling will be done to <br /> include MW3 , GTS influent and effluent . <br /> I can be reached at ( 209 ) 339-1311 with any questions or comments <br /> you may have related to this project <br /> Yours truly , <br /> SE ASTIANI VINEYARDS <br /> r <br /> Rrt-r � <br /> J Stefhen Manildi <br /> Attachments <br /> cc California Regional Water Quality Control Board <br />