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Shell sites summary <br /> Page 3 <br /> interim system. It was discussed that the contamination is not defined since there is benzene in the <br /> lateral shallow wells. <br /> 3725 Tragy Blvd Trja <br /> An SCM that includes a"Request for No Further Action'will be prepared for this site. <br /> 880 Victor Road Lodi r <br /> The temporary grotmdwater extraction system will contir,con ' ue to be operated. EHD will review the <br /> "Subsurface Investigation Report, Fourth Quarter 2005C roundwater Monitoring Report,and Site <br /> Conceptual Model"dated February 23,2006 and provide written comments. <br /> 4315 Waterloo Road,Stockton <br /> Six soil borings and three monitoring wells were installed in December 2005. Groundwater samples <br /> from MW5 and MW6 had concentrations of 1,2 DCA in them. 1,2 DCA was not found in <br /> groundwater samples from MW1 through MW4 previouE ly. Shell will have all the groundwater <br /> samples analyzed for 1,2 DCA. MTBE and TBA concentrations increased in the groundwater <br /> samples from MWI. Active remediation to reduce the o genate concentrations may be necessary. <br /> A discussion and recommendation to reduce the contaminant concentrations should be included in <br /> the next quarterly report. <br /> 1160 Yosemite Avenue.Manteca <br /> An SCM has been submitted. EHD will discuss closure of the site with the CVRWQCB. <br /> If you have any questions or comments please contact th e appropriate LOP staff overseeing the site <br /> or call me at(209) 468-3449. <br /> Donna Heran,RENS,Director <br /> Environmental Health Department <br /> Margaret Lagorio,Supervising REHS <br /> Site Mitigation Unit: <br /> c: CVRWQCB—James L.L.Barton,RG <br /> Cambria--Joe Neely,Aubrey.Cool <br />