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G OCHEC�C�. PN�SCGA , SETTINQ -ND U <br /> i; <br /> TARGET PROPERTY ADDRESS <br /> OAKRIDGE ESTATES(18327 E. HIGHWAY 88) <br /> ANDERSON STREETIB STREET !� <br /> CLEMENTS, CA 95237 <br /> TARGET PROPERTY COORDINATES <br /> Latitude(North): 38.190800-38° 11' 26.9" <br /> Longitude(West): 121.093597-121'5'37.0" <br /> i Universal Tranverse Mercator: Zone 10 <br /> UTM X(Meters): 666953.8 I <br /> UTM Y(Meters): 4228496.5 <br /> Elevation: 139 ft. above sea level <br /> 3 <br /> EDR's GeoCheck Physical Setting Source Addendum has been developed to assist the environmental professional 1 <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. I <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. j <br /> I <br /> i <br /> i <br /> 1 <br /> TC1074383.4s Page A-1 <br /> i <br />