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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-19C1 <br /> Well :M- <br /> Aquiferer: Intermediate C 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:68.61 100,000 60 <br /> Bottom Elevation:-88.39 <br /> Screen Depth: 137-157 <br /> Total Depth: 157 10,000 50 <br /> Diameter:5" <br /> Sampling Schad:Q y <br /> a > <br /> a <br /> elevations in feet mean sea level m1,000 40 R <br /> depths in feet below ground surfaceJ y <br /> N <br /> c 100 30 E <br /> 0 <br /> a) <br /> is > <br /> u10 Q,. n 20 <br /> c n n <br /> o 0 4) <br /> 1 ^ 0 0 10 <br /> 0 <br /> 000 OOCO co)o 0 C ., ., 0 00 0000 00000 00 <br /> 0 0 <br /> 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 /> +TCE SCIS 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 ppb, <br /> but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Appendix C <br /> Page 28 of 75 <br />