ARCHIVED REPORTS_SITE STATUS REPORT 2009 2ND QUARTER

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Nestle USA, Inc., Ripon, California August 11, 2009 Second Quarter 2009 Site Status Report oo TCE concentrations in the On-Site treatment system wells decreased as compared with TCE concentrations in the Second Quarter 2008. TCE concentrations in groundwater samples from both EU-3 and EU-4 have declined and remained at or below 50 pg/L since April 23, 2009. The operational data and laboratory results for the On-Site extraction and treatment system suggest that the system continues to meet containment and mass removal goals. Pumping rates at wells EU-3 and EU-4 will be monitored and adjusted if future data indicate changes are warranted. oo No CDCs were present in the effluent from the treatment system, indicating that the treatment system operated with 100% removal efficiency. 4.4 OFF-SITE EXTRACTION AND TREATMENT SYSTEM Groundwater extraction continued throughout the Second Quarter at the Off-Site extraction and treatment system. The following is a summary of the extraction and treatment system field and laboratory data and any activities that took place to optimize the performance of this system during the Second Quarter of 2009: oo The sustainable pumping rate for well E-6 averaged approximately 143 gpm during the Second Quarter 2009 as compared to an average of 181 gpm during the First Quarter of 2009 as shown in Figure 16. Despite efforts to rehabilitate extraction well E-6, improvements to the well efficiency have not been realized. Pumping from well E-6 and nearby production wells should be evaluated to determine the need for extraction at this location. oo Nestle has proposed the installation of two additional monitoring wells at the Stockton Avenue groundwater extraction and treatment system location to evaluate the cone of influence and to evaluate the potential of shutting down the extraction from well E-6. oo This extraction and treatment system removed approximately 27.48 million gallons of water and 13.28 pounds of COCs during the Second Quarter of 2009. This is equivalent to 0.48 pounds of VOC removal per million gallons of water pumped and treated compared to 0.7 pounds of VOC removed per million gallons of water pumped and treated during the Second Quarter of 2008. oo TCE concentrations have steadily decreased at E-2 to at or below 10 micrograms per liter (pg/L) since February 2006. ECM is recommending cessation of operations at E-2. oo No COCs were present in the effluent of this system, indicating that the extraction and treatment system operated with 100% removal efficiency. 4.5 PRIVATE WELLHEAD TREATMENT SYSTEMS The well at 5725 Hall Road pumped 0.5 million gallons of water between April 13, 2009 and June 23, 2009. No COCs were present in effluent samples collected from the private wellhead treatment systems at 7501 Kiernan Avenue and 5725 Hall Road, confirming that the treatment systems removed all COCs from groundwater. Nestle replaced the well located at 7501 Kiernan Avenue in August 2008. The concentrations of COCs in influent groundwater sampled from the replacement well remained below the California and Federal MCLs. 10