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Legend <br /> Current or former boring location (well <br /> identification at ground surface) <br /> Well screen interval for proposed <br /> groundwater sample and depth to <br /> water measurement <br /> Well screen interval for proposed <br /> depth to water measurement <br /> Well screen interval for damaged, <br /> missing, or decommissioned well <br /> (no planned sample or depth to <br /> water measurement) <br /> Proposed grab groundwater boring and <br /> sample location. Sample identification <br /> shown at ground surface and sample depth. <br /> Notes: <br /> Map generated using Earth Volumetric Studio by C <br /> Tech <br /> X and Y locations in NAD 1983 feet. Z locations in <br /> feet MSL relative to NGVD 1929. <br /> Vertical exaggeration is 3 times horizontal. <br /> Top of plume surface cut to approximate <br /> groundwater elevation in 4Q 2015 <br /> Cis-1,2-DCE and vinyl chloride plumes shown for <br /> reference only. Refer to Figures 13 and 14 for <br /> historical sample results. Vinyl Chloride and <br /> Cis-1,2-DCE plume shells display concentrations <br /> greater than the maximum contaminant level of 0.5 <br /> and 6 ug/L, respectively. <br /> Abbreviations <br /> MSL = feet above mean sea level <br /> ug/L = micrograms per Liter <br /> Explanation on Use of 3D Viewing Tools for Navigating Site 3 - Planned <br /> Sample Locations <br /> Available Views This PDF is enabled for 3D navigation. Use the tools below to navigate: <br /> Rough and Ready Island <br /> Depress left button and move mouse to rotate model. Port of Stockton, Stockton, California <br /> Rotate: De <br /> Click the view name in the Model Tree pane on the left of the screen to see the specified view p <br /> of combination of layers:(You may have to right click in the left most grey bar"Navigation Pane Zoom: Use scroll wheel to zoom in or out of model. G20Syntec O Figure <br /> Buttons"and select Model Pane to enable it.) -or- Depress right button and move mouse up or down to zoom in or out of model. consultants <br /> Pan: Depress both left and right buttons and move mouse to pan model in any direction. 27 <br /> SAC233 I April 2018 <br />