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GEOCHECK`-- PHYSICAL SETTING SOURCE ADDENDUM <br /> ` TARGETPROPERTY ADDRESS <br /> n, <br /> 51 ACRES <br /> 26246 N BRUELLA RD <br /> GALT,CA 95632 <br /> TARG RTY COORDINATES <br /> Latitude(North): 38.228832-38' 13'43.8" <br /> Longitude(West): 121.208138- 121' 12'29.3" <br /> Universal Tranverse Mercator: Zone 10 <br /> UTM X(Meters): 656840.3 <br /> UTM Y(Meters): 4232516.5 <br /> Elevation: 88 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 /> V 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 /> ant of a impact of contami migration generally has two principle investigative components: <br /> 1.Groundwater flow direction,and <br /> 2. Groundwater flow velocity. <br /> star flow directio patted 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 /> TC01431392.2r Page A-1 <br />