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• A review of historical groundwater data (Table 2) indicates samples collected from monitoring <br /> wells MW 1 and MW2 have not contained detectable concentrations of BTEX or TPHg since <br /> January 1993 During this same time period depth to groundwater measurements (Table 1) show <br /> the water table elevation has fluctuated approximately 10 feet from -45 26 feet mean sea level <br /> (MSL) to its current historically high Ievel of -36 33 feet MSL Based in part on this data, in <br /> addition to that of previous on-site subsurface investigations, Smith Technology recommends site <br /> closure proceedings are warranted and the existing 3,500-gallon underground fuel storage tank be <br /> properly abandoned in place <br /> If you have any questions or concerns regarding this project please contact the undersigned at <br /> (209) 579-2221 <br /> Respectfully Submitted, <br /> Smith Technology Corporation <br /> DAt-,� �� A eL— <br /> Drew Van Allen <br /> Staff Scientist <br /> Tom J Lutterman <br /> Project Geologist <br /> {�ti JLC ¢vd-�� <br /> Jeanne Homsey, P Ei� �;r�7i,l <br /> CA Registered Civil Engineer No 47410 ,� 1 <br /> PC Mike Kosta, BJJ Company, Inc \.i�,,w oil, L /f <br /> Nick Kosta, BJJ Company, Inc O �XVV <br /> Beth Thayer, CRWQCB -=' <br />�j <br /> w 1943041quwter1y\1st-qtr doe 2 <br /> • <br />