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' GEOCHECK®- PHYSICAL SETTING SOURCE ADDENDUM <br /> ' TARGET PROPERTY ADDRESS <br /> BRENKWITZ-TRACY <br /> 541 W GRANT LINE ROAD <br /> ' TRACY, CA 95304 <br /> TARGET PROPERTY COORDINATES <br /> ' Latitude(North) 37 755680-37 45'20 4" <br /> Longitude(West) 121 434097- 121 26'2 8' <br /> Universal Tranverse Mercator Zone 10 <br /> UTM X(Meters) 6379444 <br /> UTM Y(Meters) 41796570 <br /> ' EDR's GeoCheck Physical Setting Source Addendum has been developed to assist the environmentalrofessional <br /> h <br /> with the collection of physical setting source information in accordance witASTM 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 /> tAssessment 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 sod, 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 /> 1 <br /> TC0961230 3s Page A-1 <br />