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 Second Quarter 2008. The data suggest that water levels in the Lower Aquifer are responding to seasonal variations in recharge and water production. oo Groundwater mounds beneath wells TH-8 and TH-10 indicate groundwater flow between the Intermediate and Lower aquifers. These wells have been demonstrated as conduits for migration of COCs. Neenah Paper Company sealed the screened portions of TH-8 and TH-10 in the Lower Aquifer by pouring cement slurry in to the well on April 9, 2009. According to Dave Kirk of Lawrence and Associates (phone conversation with Holly Trejo of ECM on 6/22/09), the wells were grouted using a tremmie pipe. TH-8 was grouted to 183 feet bgs and TH-10 was grouted to 171 feet bgs. These depths will be confirmed by Lawrence and Associates, and will be reported with the water level data provided to Nestle for the Third Quarter 2009. 4.2 WATER QUALITY MONITORING Laboratory data collected during the Second Quarter 2009 are summarized in tables 3.1 through 5. Comparing the First Quarter 2009 data to the Second Quarter 2009 data, the distribution of COCs in all the aquifers appears similar in both quarters except for the differences in Upper Aquifer listed below: oo Upper Aquifer TCE: The concentrations of TCE in M-1A, M-46-A, M-47A and M-49A have decreased slightly between the First Quarter of 2009 and Second Quarter of 2009 (Table 3.1). oo Upper Aquifer TCE: The concentration of TCE in M-1 B has increased from 170 pg/L in the First Quarter 2009 to 440 fag/L in the Second Quarter 2009 with a corresponding increase in the water level elevation from 37.37 feet to 37.79 feet. A similar increase from 200 pg/L to 370 pg/L was observed in the TCE concentration in M-1 B from First Quarter 2008 to Second Quarter 2008 with a similar corresponding increase in the water level elevation from 38.66 feet to 39.31 feet. This observation suggests that there may be a correlation between an increase in the groundwater elevation and an increase in the TCE concentration. Dissolution from residual TCE located in the upper portion of the Upper Aquifer could be occurring at this location. This well was previously monitored on an annual basis, until the sampling frequency was changed to quarterly after the implementation of the IRAP groundwater extraction system. The presence of elevated TCE concentrations in the subsurface interval between 38 feet bgs and 40 feet bgs was observed in the vicinity of M-113 during the testing conducted by Geomatrix4 in 2005. Pump test conducted prior to the implementation of the IRAP indicated that pumping at EU-4 would provide capture of COC concentrations in the 40-foot bgs zone near M-113. Drawdown of approximately 0.5 feet was observed at M-1 B during initial aquifer testing performed for extraction well EU-4. The Second Quarter 2009 concentration remains below the historical maximum concentration observed 4 Geomatrix, 2006. Initial Testing and Characterization Report, In Situ Bioremediation Program, Nestle Beverage Company, Ripon Facility, Ripon, California, November. 8