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I . OS April 2003 AGE-NC Project 02-0946 ' ' Page 6 of 7 4.0. FINDINGS Boring log soil descriptions were utilized to model the subsurface soil profile at the site The unpact to soil and ground water was assessed from laboratory analytical data obtained from samples collected during the well installation and subsequent sampling Ground water elevation, flow direction, and gradient were determined from field data collected on 27 February 2003 41 STRATIGRAPHY Generally,moderate to dark yellowish brown,dry to damp,silty clay,clayey silt and silty sand were encountered from surface grade to 15 feet bsg In well borings MW-1 through MW-3 Moderate yellowish brown to olive gray, damp to saturated, lean clay, silty clay and silt were encountered between 20 to 35 feet bsg Olive gray to dark olive gray, saturated clayey silty sand, silt and clayey silt were encountered at 40 feet bsg Moderate yellowish brown, damp to moist, clayey sand and poorly graded sand were encountered in borings MW-1 and MW-3 between 15 and 20 feet bsg and 25 feet bsg, respectively The coarser-grained intervals encountered in borings MW-I and MW-3 appear to be laterally discontinuous Cross section A-A' is provided in Figure 4 Boring logs � . generated from data collected during the monitoring well installation are included in Appendix A 42 ANALYTICAL RESULTS OF SOIL SAMPLES A total of 9 soil samples were analyzed as described in Section 3 4 TPH-d was detected in soil samples MW-1-15 and MW-1-25 at concentrations of 130 mg/kg and 43 mg/kg, respectively No other analytes of concern were detected at or above laboratory reporting limits in the other soil samples collected from the site Analytical results of soil samples are summarized on Table 1 The laboratory reports CTEL Yt p rY ( Laboratory Ids 0302-174-1 through 0302-174-9), quality assurance,and quality control (QA/QC) report and chain-of-custody forms are included in Appendix D 4 3 GROUND WATER GRADIENT AND FLOW DIRECTION Depth to ground water was measured at between 33 60 feet and 34055 feet bsg in wells MW-1 ' through MW-3 on 27 February 2003 Relative ground water elevations at the site ranged from 32 97 feet below MSL In well MW-2 to 34 55 feet below MSL In well'MW-3 (Table 2) Ground water ' flow direction was inferred to be toward the southeast at a gradient of approximately 0 01 ft/ft • Figure 3 depicts the contours for February 2003 I Advanced GeoEnvironmental,Ine-