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t <br /> Riverside Cement Company <br /> page 2 <br /> gasoline. If the results are non-detect for these contaminants <br /> t ods listed in <br /> using the detection limits and me Tri-Regional Board h <br /> Staff Recommendations Table #2 (enclosed) ;! the groundwater must be <br /> sampled a second time to confirm the non-detect results. The <br /> minimum timeeriod between the collection of water samples is 30 <br /> P i� <br /> days. <br /> F If contaminants are detected in the soil or , groundwater further <br /> sampling would be required. The amount would be based on the <br /> levels of contamination and the information needed to further <br /> evaluate the site for closure, the need iforfurther groundwater <br /> sampling and/or the need for further reme'd'ation. f <br /> If the information from the installation and sampling of the ; <br /> monitoring well discussed above confirms there is no detectable <br /> contamination, then the monitoring well can be destroyed and the <br /> site will be given a closure letter with no further work required. } <br /> i <br /> If you have any questions contact Margaret! Lagorio, Senior REHS, at <br /> f <br /> (209) 468-3449 . <br /> 'r <br /> Ernest M. Fujimoto, M.D. , M.P.H. ! <br /> citing Health Officer g <br /> i <br /> E <br /> Diane M. Hinson, Supervising R.E.H.S. <br /> Il t <br /> Environmental Health Division ! ! <br /> DMH/ml }} <br /> c: CVRWQCB - Beth Thayer <br /> c: William J. Hunter & Associates <br /> E <br /> t <br /> i <br /> i <br /> 1 <br />