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GEOCHECK`- PHYSICAL SETTING SOURCE ADDENDUM <br /> TARGET PROPERTY ADDRESS <br /> 19900 JACKTONE ROAD <br /> 19900 JACKTONE ROAD <br /> RIPON,CA 95366 <br /> TARGET PROPERTY COORDINATES <br /> Latitude(North): 37.779598-37'46'46.6" <br /> Longitude(West): 121.142403- 121'8'32.6" <br /> Universal Tranverse Mercator: Zone 10 _ <br /> UTM X(Meters): 663590.5 <br /> UTM Y(Meters): 4182781.5 <br /> Elevation: 62 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 /> TCI 173929.2s Page A-1 <br />