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r <br /> GEOCHECK8 -.PHYSICAL SETTING SOURCE SUMMARY <br /> GROUNDWATER FLOW DIRECTION INFORMATION <br /> k 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 surficial 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 /> TARGET PROPERTY TOPOGRAPHY <br /> 111 USGS Topographic Map: 37121-H1 PETERS,CA <br /> General Topographic Gradient: General West <br /> Source: USGS 7.5 min quad index <br /> SURROUNDING TOPOGRAPHY:ELEVATION PROFILES <br /> Li <br /> r � c <br /> 0 <br /> E <br /> i North South <br /> TP <br /> O <br /> . u <br /> 6 i; � = <br /> i Ol W m W m r0 N J m N f.Or 0] N N <br /> D2 <br /> I <br /> f �^ West East <br /> TP <br /> 0 112 1 Miles <br /> Target Property Elevation:95 ft. <br /> L <br /> Source:Topography has been determined from the USGS 7.5' Digital Elevation Model and should be evaluated <br /> on a relative(not an absolute)basis. Relative elevation information between sites of close proximity <br /> should be field verified. <br /> k <br /> TC01330314.2r Page A-2 <br /> 4 <br />