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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-53B <br /> Well ID:M-53B <br /> Aquifer: Upper B Nov-09 Jan-10 Mar-10 May-10 Jul-10 Sep-10 Nov-10 <br /> Top Elevation:64.42 100,000 45 <br /> Bottom Elevation:22.42 <br /> Screen Depth:22-42 <br /> Total Depth:42 40 <br /> Diameter:2' 10,000 <br /> Sampling Sched: NR/Q <br /> elevations in feet mean sea level 35 > <br /> depths in feet below ground surface a d <br /> ° 1,000 30 d <br /> J N <br /> T <br /> 3 25 m <br /> d <br /> 100 £ <br /> 0 20 > <br /> is o <br /> s <br /> 10 15;° <br /> c m <br /> U 1 p 10 LL <br /> 5 <br /> 0 0 <br /> Nov-09 Jan-10 Mar-10 May-10 Jul-10 Sep-10 Nov-10 <br /> =1T CE o CIS 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 71 of 75 <br />