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Table 4: Volatile Organic Compounds, Analytical Results, Municipal Wells and Piezometers <br /> First Quarter 2011 Site Status Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, CA <br /> r <br /> Sample Sample Sampling Frequency Sample Chloroform cis-1,2- trans-1,2- Trichloroethene Vinyl Chloride Comments/Others <br /> Location Method Date Dichloroethene Dichloroethene <br /> USEPA Method 8260B and 524, micrograms per liter /L <br /> Municipal Wells <br /> MW-3 Purge Quarterly (a) 01/20/11 0.33 0.89 <0.1 0.44 <0.1 Bromoform: 0.16; <br /> MW-5 Purge Quarterly (a) 01/20/11 <1 <0.5 <0.5 <0.5 <0.5 <br /> MW-7 Purge Quarterly (a) 01/20/11 <0.1 <0.1 <0.1 <0.1 <0.1 Bromoform: 0.62; Chlorodibromomethane: 0.31;Dibromochloromethane: 0.11; <br /> MW-9 Purge Quarterly (a) 01/20/11 <0.1 0.79 <0.1 0.42 <0.1 <br /> MW-10 Purge Quarterly (a) 01/20/11 <0.1 <0.1 <0.1 <0.1 <0.1 Bromoform: 0.55; Chlorodibromomethane: 0.13; <br /> MW-11 Purge Quarterly (a) 01/20/11 <1 <0.5 <0.5 <0.5 <0.5 <br /> MW-12 - Quarterly - - - - - - Well not operational <br /> MW-13 - Annual - - - - - - <br /> MW-14 - Annual - - - - - - <br /> MW-15 Purge Quarterly (a) - - - - - - Well has never been operational due to poor water <br /> quality. <br /> MW-16 Purge Quarterly (a) 01/20/11 <0.1 <0.1 <0.1 <0.1 <0.1 <br /> j.MW-18 Pure Quarterly a 01/20/11 <0.1 <0.1 <0.1 <0.1 <0.1 Bromoform: 1.2; Chlorodibromomethane: 0.39; <br /> Notes: <br /> = Current quarter <br /> - : Data Not available or Unknown. NR: Not Required. <br /> (a) Sample if the well is operating during the sampling event. NS: Not Sampled <br /> Page 1 of 1 <br />