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6ae <br /> ,`,--a: <br /> ETT1 U,'SOPp, <br /> GEOCH�CK P„SYS CAL SUWC, AD N �` _ . <br /> '.T�k°t <br /> £..-,��4. <br /> f+ <br /> TARGET PROPERTY ADDRESS <br /> NEIGHBORHOOD D <br /> GRANTLINE ROAD <br /> MOUNTAIN HOUSE, CA 95391 <br /> TARGET PROPERTY COORDINATES <br /> Latitude(North): 37.762299-37'45'44.3” <br /> Longitude(West): 121.542999- 121' 32'34.8" <br /> Universal Tranverse Mercator: Zone 10 <br /> UTM X(Meters): 628339.2 <br /> UTM Y(Meters)- 4180236.5 <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 /> 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 /> e 2.Groundwater flow velocity. <br /> Groundwater flow direction may be impacted by surface topography, hydrology, hydrogeology, characteristics <br /> a 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 /> 'r t <br /> TC1302909.2s Page A-1 <br />