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1 <br /> GEOCHECK S. PHYSICAL SETTING SOURCE ADDENDUM <br /> C71 <br /> TARGET PROPERTY ADDRESS <br /> U-HAUL#709-50 STOCKTON, CA <br /> 2701 NORTH WILSON WAY <br /> STOCKTON, CA 95205 <br /> TARGET PROPERTY COORDINATES <br /> Latitude (North) 37 983360-37 59 0 1" <br /> Longitude (West) 121 271881 - 121 16' 18 8' <br /> Universal Tranverse Mercator Zone 10 <br />' UTM X (Meters) 6517680 <br /> UTM Y (Meters) 42051720 <br /> Elevation 23 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 /> 1 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 /> f 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 /> M 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 /> TC0973142 1s Page A-1 <br />