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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-23C1 <br /> Well ID:M-23C1 <br /> Aquifer:Intermediate C 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:63.85 100,000 60 <br /> Bottom Elevation:-67.75 <br /> Screen Depth:110.8-130.8 <br /> Total Depth:131.6 <br /> Diameter:4" 10,000 �- 50 <br /> Sampling Schad:A ^ <br /> i <br /> elevations in feet mean sea level Q' N <br /> Q <br /> depths in feet below ground surtace J 17000 40 m <br /> m <br /> � N <br /> S C <br /> c 100 30 E <br /> 0 m <br /> o <br /> n <br /> aLi 10 ° 20 <br /> 0 <br /> c d <br /> 0 <br /> U ii <br /> 1 0 10 <br /> ❑ ❑ <br /> 0 0 <br /> Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> - SCIS -VC -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 <br /> 0.5 ppb,but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Well ID:M-23D Well M-23D <br /> Aquifer:Lower D <br /> Top Elevation:63.85 Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> Bottom Elevation:-168.15 100,000 60 <br /> Screen Depth:221.2-231.2 <br /> Total Depth:232 <br /> Diameter:4" <br /> Sampling Schad:SA 10,000 50 <br /> elevations in feet mean sea level <br /> depths in feet below ground surtace Q N <br /> 1,000 40 <br /> � N <br /> Z C <br /> 0 100 0 30 E <br /> - m <br /> a 0 <br /> 0 <br /> c M <br /> 10 20 :° <br /> c d <br /> 0 <br /> U li <br /> 1 ❑ 10 <br /> 0 <br /> ❑o❑❑o QODM❑ <br /> 0 0 <br /> Jan-91 Jan-93 Jan-95 Jan-97 Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-11 <br /> --r SCIS -vc -water Elevation <br /> Appendix C <br /> Page 33 of 75 <br />