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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-11 B <br /> Well ID: M-11B <br /> Aquifer: UpperA/B Jan-87 Jan-89 Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> Top Elevation:66.20 100,000 60 <br /> Bottom Elevation:23.2 <br /> Screen Depth:22-42 <br /> Total Depth:43 <br /> Diameter: B 10,000 — ------ --- 50 <br /> Sampling Sched: B <br /> elevations in feet mean sea level Q d <br /> depths in feet below ground surface O' > <br /> 0L Q <br /> 1,000 40 <br /> J y <br /> 61 N <br /> l6 <br /> = 100 30 £ <br /> o d <br /> L 0 <br /> u 10 20 <br /> = o <br /> O N <br /> U ti <br /> 1 10 <br /> 0 0 <br /> Jan-87 Jan-89 Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> — TGE —CIS tvc +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 typically 0.5 <br /> ppb,but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Well M-11A <br /> Jan-87 Jan-89 Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> Well ID: M-11A 100,000 60 <br /> Aquifer: Upper A/B <br /> Top Elevation:66.28 <br /> Bottom Elevation:-43.72 <br /> Screen Depth:86-106 10,000 50 <br /> Total Depth: 110 <br /> Diameter:4" <br /> Sampling Sched:Aa > <br /> 0- 1,000 40 T <br /> elevations in feet mean sea level J N <br /> depths in feet below ground surface y <br /> y 100 30 d <br /> c £ <br /> 0 <br /> is o > <br /> 10 ° 20 �° <br /> o p R d <br /> 1 go o g 10 LL <br /> o IIomcn NOW <br /> 0 0 <br /> Jan-87 Jan-90 Jan-93 Jan-96 Jan-99 Jan-02 Jan-05 Jan-08 Jan-11 <br /> _TCE —CIS tvc —Water Elevation <br /> Appendix C <br /> Page 16 of 75 <br />