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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 RW-lA continues to <br /> contain the highest levels of hydrocarbons and MTBE, however it appears that GWE efforts have <br /> reduced MTBE and benzene concentrations in this well <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 /> z <br /> Cynthia V ko <br /> Senior Staff Engineer <br /> ED� E'p�O <br /> � o <br /> Joe W Neely,PG <br /> Senior Project Geologist 0 No 6927 ° <br /> PG 6927 <br /> �GF CAU�� <br /> Attachments <br /> Table 1 Groundwater Extraction System Analytical Results <br /> Table 2 Groundwater Extraction Mass Removal Data <br /> Figure 1 Site Vicinity Map <br /> Figure 2 Groundwater Contour/Chemical Concentration Map <br /> Figure 3 MTBE Concentrations and Mass Removal from Well RW-lA <br /> Appendix A Blaine Tech Services, Inc -Groundwater Monitoring Report <br /> Appendix B Groundwater Extraction System Certified Analytical Report <br /> 0783 3 <br />