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GEOCHECK®- PHYSICAL SETTING SOURCE ADDENDUM <br /> TARGET PROPERTY ADDRESS <br /> TRACY MGP SITE <br /> 502 E. GRANT LINE ROAD <br /> TRACY, CA 95376 <br /> TARGET PROPERTY COORDINATES <br /> Latitude (North): 37.74810-37°44' 53.2" <br /> Longitude(West): 121.4162- 121° 24' 58.3" <br /> Universal Tranverse Mercator: Zone 10 <br /> UTM X(Meters): 639535.7 <br /> UTM Y(Meters): 4178842.5 <br /> Elevation: 39 ft. above sea level <br /> USGS TOPOGRAPHIC MAP <br /> Target Property Map: 37121-F4 TRACY, CA <br /> Most Recent Revision: 1981 <br /> North Map: 37121-G4 UNION ISLAND, CA <br /> Most Recent Revision: 1981 <br /> EDR's GeoCheck Physical Setting Source Addendum is provided to assist the environmental professional in <br /> forming an opinion about the impact of potential contaminant migration. <br /> Assessment of the impact of contaminant migration generally has two principle investigative components: <br /> 1. Groundwater flow direction, and <br /> 2. Groundwater flow velocity. <br /> Groundwater flow direction may be impacted by surface topography, hydrology, hydrogeology, characteristics <br /> of the soil, and nearby wells. Groundwater flow velocity is generally impacted by the nature of the <br /> geologic strata. <br /> TC1913090.8s Page A-1 <br />