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CA LUFT Manual CHAPTER 6 SITE ASSESSMENT

. Site Assessment is a process that results is a comprehensive characterization of the release and its place in the environment. . The goal of assessment is to determine the significance of the source in the context of the site's hydrology, geology, and water quality, and to take appropriate actions

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CA LUFT Manual CHAPTER 6 SITE ASSESSMENT

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    2. Site Assessment is a process that results is a comprehensive characterization of the release and its place in the environment.

    5. The CSM must describe: Source Geology Hydrology Groundwater Quality

    6. Source composition, character, environmental fate Constituents of concern, their physical properties and chemical characteristics Magnitude, i.e., phases, concentrations, and distribution in the vadose zone and groundwater. Environmental fate, e.g., leaching potential, recalcitrance, attenuation.

    7. 2. Geology The particular qualities and features of the subsurface that affect the occurrence and distribution of the release. Direct and indirect methods.

    8. 3. Hydrology The occurrence and movement of groundwater Where does the groundwater come from… Where does the groundwater go? Kinds and sources of data

    9. 4. Groundwater Quality Spatial and temporal changes in its character and quality Field methods Laboratory methods

    10. Review information relevant to the site and the environmental fate of the release. Regional geologic and hydrologic documents (e.g. USGS, DWR, California Division of Mines and Geology, groundwater basin management districts, CalTrans) Site specific groundwater quality investigations (i.e other release sites) Climatic conditions Aerial photographs and satellite imagery Maps (e.g. topographic, soil, infrastructure) Journals IMPORTANT!

    11. Anomalous data are indicators of an incomplete understanding of the local and regional geology and hydrology. Also Remember…

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