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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-17B <br /> Well ID:M-1 7B <br /> Aquifer:UpperA/B 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 /> Top Elevation:64.86 100,000 60 <br /> Bottom Elevation: 19.86 <br /> Screen Depth:25-45 <br /> Total Depth:45 <br /> Diameter:4" 10,000 50 <br /> Sampling Schad:B _ <br /> m <br /> elevations in feet mean sea level p. N <br /> depths in feet below ground surface a 1,000 40 <br /> J y <br /> N <br /> R <br /> c 100 30 E <br /> m <br /> 0 <br /> c � <br /> 4) 10 — 20 S <br /> c y <br /> 0 <br /> Li <br /> 1 10 <br /> m 9 ° <br /> Q =0MQOCMQo 0 00 Q 0 0 0 o n 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 /> — 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-17A <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-17A 100,000 ' 60 <br /> Aquifer:Upper A/B <br /> Top Elevation:64.65 <br /> Bottom Elevation:-41.35 <br /> Screen Depth:86-106 10,000 50 <br /> Total Depth: 106 <br /> Diameter:4" <br /> Sampling Schad:A a y <br /> 1,000 40 R <br /> elevations in feet mean sea level J N <br /> depths in feet below ground surface <br /> R <br /> C 100 30 E <br /> 0 0 <br /> 0 <br /> c � <br /> 4) 10 20 ;° <br /> c <br /> O o 0 o y <br /> o <br /> u- <br /> U D ° o 0 o O o 0 0 o L <br /> 1 00 <br /> °° ° 0 0 10 <br /> o ° <br /> OL OOQOO QOOMQ Q Q Q o Q Q Q n n Q o Q Q QQ <br /> 0 f 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 /> o TCE o CIS o VC Water Elevation <br /> Appendix C <br /> Page 24 of 75 <br />