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F1 <br /> GEOCHECK&- PHYSICAL SETTING SOURCE ADDENDUM <br /> TARGET PROPERTY ADDRESS <br /> F MACKAY PROPERTY <br /> 28251-29001 EAST HIGHWAY 26 <br /> LINDEN,CA 95236 <br /> F, <br /> TARGET PROPERTY COORDINATES <br /> Latitude(North): 38.093498-38` 5'36.6" <br /> Longitude(West): 120.971802- 120°58' 18.5" <br /> a Universal Tranverse Mercator: Zone 10 <br /> UTM X (Meters): 677857.6 <br /> UTM Y(Meters): 4217926.0 <br /> Elevation: 216 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 EPA's Standards and Practices for All <br /> Appropriate Inquiries (AAI)and ASTM E 1527-05, Section 8.2.3. <br /> Section 8.2.3 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 /> I 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 /> F 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 /> IGroundwater flow direction may be impacted by surface topography, hydrology, h dro eola <br /> gy,characteristics <br /> Fi <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 /> I �! <br /> fi <br /> F1 <br />' <br /> Fi <br /> i <br /> '1F TG1574641.1 s Page A-1 <br /> 1 4 <br />