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GEOCHECK®- PHYSICAL SETTING SOURCE ADDENDUM <br /> TARGET PROPERTY ADDRESS <br /> PROPOSED LOT SPLIT146-ACRES <br /> 15000 WEST SCHUTE ROAD <br /> TRACY, CA 95376 <br /> TARGET PROPERTY COORDINATES <br /> Latitude(North): 37.717194-37'43' 1.9" <br /> Longitude(West): 121.496407- 121' 29'47.1 <br /> Universal Tranverse Mercator: Zone 10 _ <br /> UTM X(Meters): 632523.9 <br /> UTM Y(Meters): 4175296.5 <br /> Elevation: 149 ft. above sea level <br /> EDR's GeoCheck Physical Setting Source Addendum has been developed to assist the environmental professional <br /> with the collection of physical setting source information In accordance with ASTM 1527-00, Section 7.2.3. <br /> Section 7.2.3 requires that a current USGS 7.5 Minute Topographic Map(or equivalent, such as the USGS Digital <br /> Elevation Model)be reviewed. It also requires that one or more additional physical setting sources be sought <br /> when (1)conditions have been identified in which hazardous substances or petroleum products are likely <br /> to migrate to or from the property, and (2)more information than is provided in the current USGS 7.5 Minute <br /> Topographic Map(or equivalent) is generally obtained, pursuant to local good commercial or customary practice, <br /> to assess the impact of migration of recognized environmental conditions in connection with the property. Such <br /> additional physical setting sources generally include information about the topographic,hydrologic, hydrogeologic. <br /> and geologic characteristics of a site, and wells in the area. <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 geologic strata. <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 /> TC01123401.tr Page A-1 <br />