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1 <br /> "` -GEOCHECW -PHYSICAL SETTINGSOURCE�SUMMARY , r r <br /> GROUNDWATER FLOW DIRECTION INFORMATION 1 <br /> Groundwater flow direction for a particular site is best determined by a qualified environmental professional <br /> using site-specific well data If such data is not reasonably ascertainable,it may be necessary to rely on other <br /> sources of information,such as surface topographic information, hydrologic information, hydrogeologic data <br /> collected on nearby properties,and regional groundwater Flow information(from deep aquifers) ' <br /> TOPOGRAPHIC INFORMATION ' <br /> Surface topography may be indicative of the direction of surflcial groundwater Flow This information can be used to <br /> assist the environmental professional in forming an opinion about the impact of nearby contaminated properties or, <br /> should contamination exist on the target property,what downgradient sites might be impacted <br /> USGS TOPOGRAPHIC MAP ASSOCIATED WITH THIS SITE <br /> Target Property 2437121-1-13 STOCKTON WEST,CA <br /> Source USGS 7 5 min quad index ' <br /> GENERAL TOPOGRAPHIC GRADIENT AT TARGET PROPERTY <br /> Target Property General WSW , <br /> Source General Topographic Gradient has been determined from the USGS 1 Degree Digital Elevation Model and <br /> should be evaluated on a relative(not an absolute)basis Relative elevation information between sites of <br /> close proximity should be field verified <br /> 1 <br /> HYDROLOGIC INFORMATION <br /> Surface water can act as a hydrologic bamer to groundwater flow Such hydrologic information can be used to assist <br /> the environmental professional in forming an opinion about the impact of nearby contaminated properties or,should <br /> contamination exist on the target property,what downgradient sites might be impacted <br /> Refer to the Physical Setting Source Map following this summary for hydrologic information(major waterways ' <br /> and bodies of water) <br /> FEMA FLOOD ZONE <br /> FEMA Q3 Flood ' <br /> Target Property County Data Electronic Coverage <br /> SAN JOAQUIN,CA YES <br /> Flood Plain Panel at Target Property 0603020035D 1 CBPP ' <br /> Additional Panels in search area 0603020020D/CBPP <br /> 0602990445B/CBPP <br /> NATIONAL WETLAND INVENTORY <br /> NWI Electronic ' <br /> NWI Quad at Target Property ^ Coverage <br /> STOCKTON WEST YES <br /> HYDROGEOLOGIC INFORMATION <br /> Hydrogeologic information obtained by installation of wells on a specific site can often be an indicator ' <br /> of groundwater flow direction in the immediate area Such hydrogeologic information can be used to assist the <br /> environmental professional in forming an opinion about the impact of nearby contaminated properties or,should <br /> contamination exist on the target property,what downgradient sites might be impacted <br /> TC51g466 2s Page A-2 <br />