ARCHIVED REPORTS_SITE STATUS REPORT 2018 2ND QUARTER

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Table 3.1 Upper Aquifer Monitoring Wells - Groundwater Analytical Results Former Nestle Facility, Ripon, CA Average PDB cis-1,2- Sampling Sampling Sample TCE VC Comments/ Well ID Method (feet bth Frequency(a) Date (pg/L) (D9/E) (pg/L) Other Constituents (DUP) PDB 67.5 Annual 04/05/18 <0.5 <0.5 <0.5 M-41A PDB 109.5 Quarterly 01/23/18 <0.5 1 <0.5 PDB 109.5 Quarterly 04/12/18 <0.5 <0.5 <0.5 M-45A PDB 100.5 Semi-Annual 04/05/18 <0.5 <0.5 <0.5 M-46A PDB 52.5 Semi-Annual 04/17/18 1.9 1 <0.5 <0.5 M-47A PDB 52.5 Semi-Annual 04/09/18 2.7 <0.5 <0.5 CF: 3.6; 1,1-DCA: 0.52 (DUP) PDB 52.5 Semi-Annual 04/09/18 2.5 <0.5 <0.5 CF: 3.3; 1,1-DCA: 0.55 M-48A PDB 52.5 Semi-Annual 04/09/18 12 <0.5 <0.5 CF: 1.4 M-49A PDB 52.5 Semi-Annual 04/09/18 20 <0.5 <0.5 M-50A PDB 62.5 Semi-Annual 04/09/18 1 <0.5 <0.5 M-51A PDB 55.5 Semi-Annual 04/09/18 <0.5 <0.5 <0.5 M-52B PDB 34.5 Annual 04/05/18 1.3 <0.5 <0.5 M-53B PDB 39.5 Annual 04/05/18 2 <0.5 <0.5 M-55A PDB 110 Quarterly 01/04/18 14 23 <0.5 (DUP) PDB 110 Quarterly 01/04/18 14 23 <0.5 PDB 110 Quarterly 04/09/18 13 20 <0.5 M-56A PDB 65 Quarterly 01/04/18 <0.5 <0.5 <0.5 PCE: 7.5 PDB 65 Quarterly 04/10/18 <0.5 <0.5 <0.5 PCE: 12 M-57A PDB 110 Quarterly 01/04/18 <0.5 <0.5 <0.5 PDB 110 Quarter) 04/10/18 <0.5 <0.5 <0.5 Notes: (a)Sampling frequency is based on the Monitoring and Reporting Program(MRP R5-2014-0815,2/17/17 MRP revision,and MRP R5-2015-0012-001)issued by the RWQCB. PDB=Passive Diffusion Bag Volatile organic compounds data by EPA Method 8260B in micrograms per liter(tag/L) TCE=Trichloroethene cis-1.2-DCE=cis-1,2-Dichloroethene VC=Vinyl Chloride CF=Chloroform CDBM=Chlorodibromomethane 1,1-DCA=1,1-Dichloroethane PCE=Tetrachloroethene Total Dissolved Solids(TDS)data by Standard Method 2540C in milligrams per liter(mg/L) "<"=Less than the method detection limit,"NS"=Not sampled,"DUP"=Sample duplicate Second Quarter 2018 Site Status Report ECM Consultants Nestle USA, Inc. Page 2 of 2 8/10/2018