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� a <br /> C A M B R I A <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> The petroleum hydrocarbon and MTBE concentrations in groundwater samples collected from <br /> the shallow wells this quarter are within the historical norm for this site Wells MW-5 and <br /> RW-1A continue to contain the highest levels of hydrocarbons and MTBE, however it appears <br /> that GWE efforts have reduced MTBE and benzene concentrations in the vicinity of these wells <br /> Cambria recommends continued operation of the GWE system (as soon as we obtain an NPDES <br /> permit) and continued monitoring and sampling of site monitoring wells to evaluate <br /> concentration trends at the site <br /> CLOSING <br /> If you have any questions regarding the contents of this document, please call Joe Neely at <br /> (707) 933-2361 <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> L � <br /> Cynthia Vasko <br /> Senior Staff Engineer <br /> k4 �3QH W MF�G'. <br /> o � <br /> Joe W Neely, RG <br /> Senior Project Geologist ' <br /> R �� 6927 <br /> G 6927 <br /> OF CAVF <br /> 0783 3 <br />