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'r4 <br /> GEOCHECK(g) , YSiCAL SETTING S4U <br /> RCE�ADDENDUM ' <br /> TARGET PROPERTY ADDRESS <br /> SAN JOAQUIN DELTA COLLEGE <br /> 5151 PACIFIC AVENUE <br /> STOCKrON CA 95207 <br /> ' TARGET PROPERTY COORDINATES <br /> Latitude (North) 37 995708-37 59'44 6" <br />' Longitude(West) 121 313882 - 121 18'49 1" <br /> Universal Tranverse Mercator Zone 10 <br /> UTM X(Meters) 648074 6 <br /> UTM Y(Meters) 42064750 <br />'x EDR's GeoCheck Physical Setting Source Addendum has been developed to assist the environmental professional <br /> with the collection of physical setting source inrormation to 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 ItKely <br /> to migrate to or from the property, and(2) more information than rs provided in the current USGS 7 5 Minute <br /> Topographic Map (or equivalent) ,s generally obtained pursuant to local good commerciai or customary practice, <br /> to assess the impact of migration of recognized environmental conditions in connection with the property Such <br /> addittonal physical setting sources generally include information about the topographic, hydrologic, hydrogeologic, <br /> and geologic characteristics of a site and wells m 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 enwronmentai professional in <br /> forming an opinion about the impact of potential contaminant migration <br /> 1 <br /> 1 <br /> TC537040 1 s Page A-1 <br />