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 in M-1 B (590 pg/I, 2005 and 2007). Nestle will continue to evaluate the COC data for this well as additional data are collected. No changes to the COC distribution in the Intermediate or Lower aquifers were observed. 4.3 ON-SITE EXTRACTION AND TREATMENT SYSTEM AND IRAP Groundwater extraction continued throughout the Second Quarter 2009 at the On-Site extraction and treatment system. The following is a summary of the On-Site extraction and treatment system performance data and a discussion of the performance monitoring. The extraction and treatment system was upgraded in February 2008 consistent with the approved Interim Remedial Action Plan (IRAP)5. This system utilizes an activated carbon treatment system to treat groundwater extracted from wells EU-3 and EU-4. Following the startup of these new IRAP wells on February 14, 2008, extraction from wells EW-1 and EI-1 ceased. ECM collected groundwater monitoring data and assessed the extraction and treatment system operation on an on-going basis. Operational changes were made based on these assessments when needed. The following is a summary of the extraction and treatment system field and laboratory data and assessments that were made to optimize the system performance during the Second Quarter of 2009. oo At the On-Site extraction and treatment system, data from extraction wells EU-3 and EU-4 and nearby monitoring wells (M-113, M-46A, M-47A, M-48A, and M- 49A) have been assessed. Since the system startup in February 2008, concentrations of TCE have decreased from 450 pg/I to 39 pg/I at EU-3, and from 1,200 pg/I to 25 pg/I at EU-4 (Figure 15). oo A decline in the concentrations of TCE has been observed at the nearby monitoring wells (M-1A and M-47A) since the treatment system startup (see Table 3.1). ECM will continue to sample these wells quarterly and assess the monitoring data to evaluate system performance. oo The On-Site extraction and treatment system extracted approximately 7.67 million gallons of water and removed 3.29 pounds of COCs from groundwater during the Second Quarter of 2009. This is equivalent to the removal of 0.43 pounds of COCs per million gallons of water pumped and treated. oo TCE mass removal rates for the combined influent from EU-3 and EU-4 have been estimated as high as 0.23 lbs/day (in April 2008), and has more recently averaged 0.04 lbs/day during the Second Quarter(April through June) of 2009. oo Nestle has proposed the installation of two additional monitoring wells at the Site to evaluate the capture zones of the IRAP wells EU-3 and EU-4 to the east and to the west where no other monitoring wells are currently located6. 5 Environmental Cost Management, Inc., Interim Remedial Action Plan for 230 Industrial Avenue, Former Nestl6 USA, Inc. Facility, Ripon, CA - 95366. August 2007. 6 ECM, 2009c. Monitoring Well Installation Work Plan for Industrial and Stockton Avenue Extraction and Treatment Systems, Former Nest/6 USA, Inc. Facility, Ripon, CA — 95366, June, 19, 2009. 9