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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-38D <br /> Well ID:M-38D Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> Aquifer:Lower D <br /> Top Elevation:56.72 100,000 40 <br /> Bottom Elevation:-188.28 <br /> Screen Depth:206-236 <br /> Total Depth:245 35 <br /> Diameter:2" 10,000 <br /> Sampling Schad:Q <br /> 30 m <br /> elevations in feet mean sea level Q- y <br /> depths in feet below ground surface G' 1,000 - R <br /> 25 m <br /> rn � <br /> 3 <br /> R <br /> c 100 20 E <br /> m <br /> 0 <br /> 15 R <br /> 4) 10 <br /> c <br /> ° <br /> U 10 LL <br /> 1 <br /> 5 <br /> n o o n <br /> 0 0 <br /> Jan-07 Jul-07 Feb-08 Aug-08 Mar-09 Oct-09 Apr-10 Nov-10 <br /> —*—TCE —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 0.5 ppb,but <br /> range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Appendix C <br /> Page 54 of 75 <br />