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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-40D <br /> Well ID:M-40D <br /> Aquifer:Lower Jan-07 Jul-07 Jan-08 Jul-08 Jan-09 Jul-09 Jan-10 Jul-10 Dec-10 <br /> Top Elevation:64.65 <br /> Bottom Elevation:-230.35 100,000 45 <br /> Screen Depth:237-252 <br /> Total Depth:295 40 <br /> Diameter:2" 10,000 <br /> Sampling Sched:Q <br /> 35 <br /> elevations in feet mean sea level > <br /> depths in feet below ground surface C 1,000 30 m <br /> J N <br /> N <br /> 01 <br /> 3 25 m <br /> = 100 E <br /> 0 20 > <br /> o <br /> .0 <br /> 10 15:° <br /> c m <br /> U 10 Li <br /> ° 5 <br /> Q Q Q Q Q Q o 0 0 0 0 0 0 0 0 0 <br /> 0 0 <br /> Jan-07 Jul-07 Jan-08 Jul-08 Jan-09 Jul-09 Jan-10 Jul-10 Dec-10 <br /> o TCE o CIS 0 VC -4--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 <br /> typically 0.5 ppb,but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Appendix C <br /> Page 56 of 75 <br />