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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-46A <br /> Well ID:M-46A <br /> Aquifer: upper B/A Jun-07 Dec-07 Jun-08 Nov-08 May-09 Nov-09 May-10 Nov-10 <br /> Top Elevation:65.34 100,000 45 <br /> Bottom Elevation:5.34 <br /> Screen Depth:50-60 <br /> Total Depth:60 40 <br /> Diameter:2' 10,000 <br /> Sampling Schad:Q <br /> 35 <br /> elevations in feet mean sea level > <br /> depths in feet below ground surface CL <br /> Q- 1,000 30 <br /> _ p v! <br /> rn <br /> 3 0 25 R <br /> 100 0 o E <br /> 0 0 0 20 > <br /> m D 00 <br /> 10 p 15 <br /> U <br /> 0 y <br /> U ° 10 Li <br /> 1 ° ° — <br /> ° 5 <br /> ° ° ° ° ° ° ° <br /> 0 0 <br /> Jun-07 Dec-07 Jun-08 Nov-08 May-09 Nov-09 May-10 Nov-10 <br /> L TCE 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 64 of 75 <br />