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amec�9 <br /> report has been prepared to address the Water Board's verbal request for the SCM update <br /> report. <br /> 1.1 OBJECTIVES <br /> The SCM has been updated to address the following objectives: <br /> • Summarize relevant regional geologic and hydrogeologic conditions, <br /> • Describe operations that occurred at the Site relevant to describing possible COC <br /> release mechanisms, <br /> • Evaluate implications of the possible COC release mechanisms <br /> • Develop a technically feasible explanation for the current distribution of COCs <br /> beneath the Study Area, <br /> • Identify potential offsite source areas and release mechanisms that have affected <br /> groundwater quality, and <br /> • Provide a summary of key findings and implications for Nestle, the Water Board, <br /> and other interested parties to consider. <br /> 1.2 SCOPE <br /> The SCM focuses on an area that is approximately four square miles, as shown in Figure 1. <br /> This area is referred to as the "Study Area", which encompasses the former facility at <br /> 230 Industrial Avenue (the Site). The scope of this SCM revision includes: <br /> • A review of the regional geology and stratigraphy, <br /> • A review of the regional hydrogeology, <br /> • A review of Site historical operations, characterization, and remediation actions, <br /> • An assessment of Site hydrostratigraphy and chemical distribution, <br /> • A review of historical and present groundwater recharge and pumping, <br /> • An assessment of the role of preferential pathways (including sewers and conduit <br /> wells) ,and <br /> • A review of spatial and temporal trends in groundwater quality. <br /> 1.3 ORGANIZATION OF THIS REPORT <br /> The report is organized as follows: <br /> • Section 2 describes the Regional Setting, <br /> AMEC Geomatrix, Inc. <br /> hDoc_Safe\9000s\9837.005\4000 REGULATORY\SCM_01.30.09\1_text\SCM Report Final.doc 2 <br />