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Between 1999 and 2008, groundwater elevations at Site 47 were measured between 3 and 7 feet <br /> below msl, depending on the season. This is consistent with the surrounding region and island <br /> hydrology in the Delta. During both the wet and dry seasons, the groundwater gradient is to the <br /> south-southwest towards the deeper drainage channel along Site 47's southern boundary. Limited <br /> seasonality has been observed at RRI; depths to water measurements generally vary by about 2 <br /> to 5 feet between the dry and wet season (Geosyntec, 2018). <br /> Site 47 RAP for Soil 5 October 2023 <br />