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Historical Groundwater Elevations and TCE/cis-1,2-DCE/VC Concentrations <br /> 2010 Annual Report <br /> Former Nestle USA Inc. Facility <br /> Ripon, California <br /> Well M-54C <br /> Well ID:M-54C <br /> Aquifer: Intermediate C Nov-09 Jan-10 Mar-10 May-10 Jul-10 Sep-10 Nov-10 <br /> Top Elevation:62.61 100,000 - 45 <br /> Bottom Elevation:-122.39 <br /> Screen Depth: 155-175 <br /> Total Depth: 185 40 <br /> Diameter:2" 10,000 <br /> Sampling Sched: NR/Q <br /> 35 <br /> elevations in feet mean sea level > <br /> depths in feet below ground surface Q- d <br /> Q- 1,000 30 m <br /> J N <br /> 01 <br /> 3 25 R <br /> = 100 0 £ <br /> 0 0 20 > <br /> R o <br /> 10 15 'S <br /> 4) <br /> c d <br /> v 10LL <br /> 1 <br /> 5 <br /> 0 0 <br /> Nov-09 Jan-10 Mar-10 May-10 Jul-10 Sep-10 Nov-10 <br /> Fo TCE —SCIS o VC -4—Water Elevation <br /> Note: All concentration values that are less than the detection limit have been plotted as one-half of the detection limit. Detection limits are <br /> typically 0.5 ppb,but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Appendix C <br /> Page 72 of 75 <br />