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CAMBRIA <br /> RECOMMENDATIONS <br /> To obtain vertical delineation in soil and groundwater, Cambria proposes advancing one CPT <br /> boring adjacent to the northwestern dispenser island and collecting soil and groundwater samples <br /> below 60 fbg To obtain lateral delineation in soil and groundwater, Cambria proposes installing <br /> additional groundwater monitoring wells east of well MW-2 and west of MW-3 <br /> Cambria also recommends gauging and sampling wells MW-2 through MW-6 quarterly to <br /> determine if there are seasonal fluctuations in the observed groundwater elevations and chemical <br /> concentrations and to establish a predornmant groundwater flow direction over time Because <br /> "E they have not been detected in groundwater onsite, Cambria recommends analyzing groundwater <br /> samples from all wells annually for TPHg and BTEX We recommend quarterly oxygenate <br /> analyses for all wells <br /> CLOSING <br /> IfYq regarding ou have an questions re ardor the contents of this document, please call Aubrey Cool at <br /> Y <br /> (510)420-3336 <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> 61mNaninum <br /> Senior Staff Geologist <br /> D GEpI <br /> 0 <br /> foe W Neely,RG � W �FF�C`r� <br /> Senior Project Geologist <br /> RG 6927 No 6927 <br /> OF <br /> 0953 7 <br />