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05 September 2002 <br /> IAGE-NC Project No 02-0927 <br /> Page 2 of 6 <br /> northern and southern portions of the Great Valley Province have been designated the Sacramento <br /> m and San Joaquin Valleys, respectively - , <br /> I ' <br /> 1 11 <br /> Based on the General Soil Map from the San Joaquin County Soil Survey, published by the United <br /> States Department of Agriculture Soil Conservation Service in 1992, the site area is within the <br /> Jackson-Hallenbeck-Stockton (JHS) association The JHS soils are located within basins, and <br /> generally consist of moderate to poorly drained fine textured soils The soils are generally derived <br />' from both marine and non-marine sediment, and are generally formed in alluvium derived from <br /> mixed rock sources <br />' The Modesto;Riverbank, Turlock Lake Formations and overlying recent alluvium are the principal <br /> sources of domestic groundwater in the 13,500-square-rrule San Joaquin Valley Ground Water Basan <br /> (Basan 5-22) This basin is dramed primarily by the San Joaquin River The closest surface water <br />' feature to the site is Duck Creek, located approximately 1,000 feet south of the site Water from <br /> creek drams Into the San Joaquin River Deep Water Channel and is primarily used for commercial <br />' and recreational boating <br /> 1 2 2 GROUND WATER DEPTH AND FLOW DIRECTION <br /> Based on information obtained during soil probe boring, ground water depth beneath the site Is <br /> 1. approximately 45 feet bsg - <br /> Based upon well information obtained from data collected from Lines of Equal Depth to <br /> 1 Groundwater Fall 1999 map published by the San Joaquin County Flood Control District and Water <br /> Conservation District (FCD&WCD) regional ground water flow direction In the area is generally' <br /> 1 towards the northeast <br /> 1 3.0. PROCEDURES <br /> On 06 August 2002, one soil probe boring (P-7) was advanced at the site as part of the assessment <br /> 1 related(to the former UST The field work was conducted as outlined in the AGE-prepared Phase 11 <br /> Site Assessment Work Plan Addendum, dated 02 August 2002 <br /> 1 <br /> i <br /> 1 <br /> t <br /> Advanced GeoEnvironmentaa,Inc <br /> 1 <br />