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Historical Groundwater Elevations and TCE/cis-1,2-DCENC Concentrations <br /> 2010 Annual Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, California <br /> Well ID:M-13B Well M-13B <br /> Aquifer:Upper A/B <br /> Top Elevation:64.33 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 /> Bottom Elevation:24.33 <br /> Screen Depth:20-40 100,000 60 <br /> Total Depth:40 <br /> Diameter:4' <br /> Sampling Schad:A ''low 10,000 -- -- ---- --- 50 <br /> m <br /> elevations in feet mean sea level C > <br /> depths in feet below ground surface 0. — <br /> 1,000 40 a6i <br /> to <br /> 1 � <br /> N N <br /> c 100 30 E <br /> dm <br /> m > <br /> 0 <br /> c n <br /> m 10 20 =° <br /> U <br /> c <br /> o Q m <br /> U LL <br /> 1 a 10 <br /> QQ��ffi�Q D D D D D D D D D D D D Q Q Q Q Q <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 /> n TCE <, CIS 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 <br /> ppb,but range from 0.5 to 500 ppb,historically. See Appendix B for specific values. <br /> Well M-13A <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 /> Well ID: M-13A 100,000 60 <br /> Aquifer: Intermediate C <br /> Top Elevation: 64.28 <br /> Bottom Elevation: -66.72 10,000 50 <br /> Screen Depth: 120-130 <br /> Total Depth: 131 <br /> Diameter: 4" <br /> Sampling Schad: SA a 1,000 40 m <br /> R <br /> elevations in feet mean sea level J w <br /> depths in feet below ground surface <br /> U) 100 30 4') <br /> o <br /> — am <br /> m > <br /> c 10 20 0 <br /> 0 <br /> m a <br /> U <br /> c y <br /> 0 0 <br /> U 1 p 0 QDo�A 10 li <br /> QQCMOM MOMO a s a 0 a 0 0 0 Q 0 0 0 Q Q Q Q Q Q Q Q Q Q Q Q Q Q 0 0 0 0 0 <br /> 0 0 <br /> Jan-89 Jan-92 Jan-95 Jan-98 Jan-01 Jan-04 Jan-07 Jan-10 <br /> TCE o CIS Vc —4--Water Elevation <br /> Appendix C <br /> Page 19 of 75 <br />