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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-38A <br /> Well ID:M-38A Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> Aquifer:Upper A 100,000 45 <br /> Top Elevation:56.54 <br /> Bottom Elevation:-188.46 <br /> Screen Depth:95-120 40 <br /> Total Depth:245 <br /> Diameter:2" 10,000 <br /> Sampling Schad:Q 35 = <br /> a w <br /> elevations in feet mean sea level C y <br /> depths in feet below ground surface Q" 1,000 30 <br /> J y <br /> � u! <br /> 25 m <br /> c 100 F <br /> O <br /> m 20 <br /> O <br /> C � <br /> a) 10 15S <br /> c <br /> O m <br /> v 10 LL <br /> 1 <br /> 5 <br /> Q <br /> 0 0 <br /> Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> —*—TCE —SCIS Svc --o--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,but <br /> range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Well ID:M-38C <br /> Aquifer: Intermediate C <br /> Top Elevation:56.55 Well M-38C <br /> Bottom Elevation:-188.45 <br /> Screen Depth: 128-138 <br /> Total Depth:245 Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> Diameter:2" 100,000 45 <br /> Sampling Schad:Q <br /> elevations in feet mean sea level 40 <br /> depths in feet below ground surface 10,000 <br /> I 35 <br /> CL CL °7 <br /> 1,000 30 <br /> J d <br /> � N <br /> 3 25 <br /> 100 <br /> o F <br /> m 20 <br /> 0 <br /> c � <br /> Q 10 — 15 =° <br /> c y <br /> o y <br /> L) 10 u_ <br /> 1 <br /> 5 <br /> D C � <br /> 0 0 <br /> Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> Appendix C <br /> Page 53 of 75 <br />