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CAMBRIA <br /> i <br /> CONCLUSIONS <br /> Gasoline constituents were not detected in soil samples collected from any of the well bonngs <br /> TPHg and BTEX were detected in a groundwater sample from well MW-1 Wells MW-2, <br /> through MW-5 define the lateral extent of TPHg, and benzene in groundwater beneath the site to <br /> the north, southwest, east, and southeast MTBE was detected in a groundwater sample collected <br /> from well MW-2 Wells MW-1, MW-3 through MW-5 define the lateral extent of MTBE in <br /> groundwater beneath the site to the southwest and north 1,2-DCA was detected in wells MW-1, <br /> MW-2, and MW-5 Wells MW-3 and MW-4 define the lateral extent of 1,2-DCA in <br /> groundwater to the northwest and southwest of the site <br /> RECOMMENDATIONS <br /> Cambria recommends gauging and sampling wells MW-1 through MW-5 on a quarterly basis to <br /> determine if there are seasonal fluctuations in the observed groundwater elevations and chemical <br /> concentrations, and to establish a predominant groundwater flow direction over time <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 /> Scott Lewis <br /> Senior Staff Geologist <br /> RED GEO <br /> H W �O <br /> Joe W Neely, RG ���GS�p ti�F GAN <br /> Senior Protect Geologist <br /> RG 6927 No 6927 <br /> i <br /> 1511 5 <br />