FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

i Ta,..-- 3.3: Volatile Organic Compounds, Analytical Results, Lower Aquifer,,ells s Second Quarter 2006 Site Status Report Former Nestle USA, Inc. Facility, Ripon, CA ' Average PDB Sample i cis-1,2- trans-1,2- I Trichloroethene I Vinyl'Chloride Chloroform Comments/Others SampleLocation � Sample Method I Sampling Frequency I � 1 Depth (ft, bgs) Date Dichloroethene Dichloroethene USEPA Method 8021 and 524, micrograms per liter(ppb) Lower Aquifer M-6D i PDB 225.5 Q 4118106 4.3 <0.5 17 <0.5 _ <1 _.. - M-8D PDB 1 225.5 Q 4118/06 2.7 <0.5 4.5 <0.5 <1 M-20 PDB 207.5 Q (A) 4119106 1.6 <0.5 1.2 -j 0.59 <1 - _- M-21 D PDB 227.5 ! SA(A) 4112106 1 <0.5 <0.5 ' <0.5 <1 M-23D PDB 223.7 A4119106 0.5 0.5 0.5 0.5 --- 1 M-27D - I Purge - Q(SA) ! 513/06 { <0.5 <0.5 <0.5 <0.5 <1 - M-31 C21D PDB 203.5 NR(Q(f)) 4118106 150 0.86 - 15 31 <1 1,1-Dichloroethene: 0.61 M-32D PDB 224.5 NR 4 ! 4118106 - 2.1 ! <0.5 0.81 <0.5 <1 { {f)) -_ - _ - - -- - M-34D I PDB 226.5 NR(Q(f)) 4118106 3.3 <0.5 1.2 <0.5 <1 M-34D1 PDB i 328.5 NR(Q(f)) 4118/06 <0.5 <0.5 i0.5 M-35D PDB 247.5 NR{Q(f)) 4/18f06 <0.5 <0.5 <0.5 ; <0.5 <1 IM-36D PDB 232.5 NR(Q(f)) 4/18106 <0.5 <0.5 <0.5 <0.5 <1 M-37D PDB 231.5 NR(Qm) 4/18106 <0.5 <0.5 <0.5 <0.5 <1 Notes: ppb =parts per billion msl: 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. ( 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. (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 Page I of I