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Table 5: Volatile Organic Compounds, Analytical Results, Fox River Paper Company Wells, Private Wells and Other Wells Second Quarter 2006 Site Status Report Former Nestle USA, Inc. Facility, Ripon, CA Average PDB Sample cis-'1,2- trans-1.2- SampleLocation Sample Method Depth (ft, bgs) Sampling Frequency pate Dichloroethene Dichloroethene Trichloroethene Vinyl Chloride Chloroform Comments/Others USEPA Method 8021 and 524, micrograms per liter(ppb) 8001 Kiernan Ave NS - I Q(NR) - Irrigation Well) Phase II Domestic Wells (South of Stanislaus River) -One-Time Sampling i Phase 11 Wells no longer sampled. Sampled once in ay 2005. Other CALTRANS Purge ..._. __._. - SA(A) 4127106 0.59 ' <0.5 1.6 <0.5 2 RCA Purge - Q (M) 4127106 <0 1 <0.1 �- -- --- -- _ .. <0.1 <0.1 1 1-Dichloroethene: 0.16 RC-2 . . i Purge - SA(M) j 4127106 <0.5 <0.5 <0.5 <0.5- <1 - ; R Pur ge - i- Q i-- <0.5<0.5<0.5 4113106 I ...... <0.5 .. <1 - - g - - - - _ i L..._- RPS-2 Purge - NR - 4/13/06 <0.5 ! <0.5 <0.5 <0.5� - _ <� -. - I- 110 Manle Pure - NR 4113/06 <0.1 — .<0.1 <0.1 <0.1 0 Notes: ppb = parts per billion ms]:Above mean sea level bgs: below ground surface B: Biennial sampling(odd-numbered years) A: Annual sampling SA: Semi-annual sampling M: Monthly sampling Q: Quarterly sampling - - Data Not available or Unknown. (a) Groundwater elevation and depth to groundwater from surface will be measured at each monitoring well and accessible supply well in this table on a quarterly basis. (b) Nestle can sample more frequently than required. However, results from additional samples must be provided to the CVRWQCB for review. g ( c)Sampling is not required. Measurement of quarterly groundwater elevations are required. (d)Sample if it becomes operational. (e) Sampling frequency required for private supply wells that have wellhead treatment units installed by Nestle. gi (f) New wells installed in 2005 proposed for monitoring quarterly in 2006. In 2007, monitoring frequency proposed to be reevaluated (Environmental Cost Management, Inc., Draft Well Installation Report For Plume Delineation South of the Stanislaus River, Former Nestle USA, Inc. Facility, Ripon, California, December 16, 2005). Quarterly sampling proposed in the 2005 Annual Report that is awaiting RWQCB approval. (g)The 2005 Annual Report requests removal from monitoring program,for example, the well is abandoned/detroyed or monitoring is not possible. InflEff: Influent and Effluent sampling (occurs monthly for operating extraction wells) NR: Not Required. Sampling frequency schedule agreement established between Nestle and RWQCB on 7121105. (SAMPLING FREQUENCY)= Bold Sampling.Frequency in Parentheses shows change proposed in the 2005 Annual Report that is awaiting RWQCB approval. NS: Not Sampled I Page 3 of 3