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 5 CONCLUSIONS The following conclusions are based on the information presented above: oo Many of the City of Ripon groundwater production wells are screened in the Intermediate Aquifer. The decreased average water level elevation in the Intermediate Aquifer is a response to higher water production from the City of Ripon to meet higher water demand as noted by the increase in pumping in particular at MW-10 and MW-13 during this quarter. oo A decrease in the water elevation in the Lower Aquifer is a seasonal response and indicates the source of recharge to this aquifer is separate from the Upper and Intermediate aquifers. oo The groundwater gradients in the Upper, Intermediate, and Lower Aquifers remained consistent from the First Quarter 2009 to the Second Quarter 2009 indicating no significant changes in the pumping regime or recharge sources. oo The groundwater elevation in the Lower Aquifer decreased an average of 2.34 feet from January 12, 2009 to April 6, 2009 as compared to changes of less than 0.5 foot in water elevations in the Upper and Intermediate aquifers during the same time period. This differential supports the theory that the Lower Aquifer is hydraulically separated from the Upper and Intermediate aquifers by the Corcoran Clay. oo Surface irrigation by Neenah Paper Company likely is contributing to the groundwater mounding in the Upper Aquifer near the Neenah Paper Company lagoons. oo A review of the quarterly COC data for the Upper and Intermediate aquifers indicate that the COC concentrations appear to be stable or decreasing with the exception of the increased TCE concentration in Upper Aquifer well M-113 between the first and second quarters of 2009. oo The observed increase in TCE concentration from the First Quarter 2009 to the Second Quarter 2009 and similar increase between First Quarter 2008 and Second Quarter 2008 corresponds to an increase in the groundwater elevation in M-1 B from the first quarter to the second quarter. This suggests that dissolution from residual TCE located in the upper portion of the Upper Aquifer(B zone) may be occurring at this location. However, hydraulic influence between EU-4 and M- 1 B is present to provide capture of COCs in the B zone as indicated during the IRAP system startup testing. oo A review of the data indicates that the sustainable pumping rate for well E-6 continues to decrease due to a drop in well efficiency. oo The COC mass removal from the Intermediate Aquifer achieved by E-6 is extremely low, and the decline in the removal rate since the First Quarter of 2008 is related to the decrease in concentrations of COCs in the groundwater in the vicinity of E-6 and to reduced pumping as a result of the decline in well efficiency. 11