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' 05 February 2001 AGE-NC Project No. 98-046$ ' Page 5 of 7 3.2. ANALYTICAL RESULTS FROM SOIL SAMPLES ' A total of seven depth-discrete soil samplesyz g,an BTEX and nine fuel additives. by EPA Method 8015, 8020 'and 8260 Modified, respectively. A total of four depth-discrete soil samples were analyzed for TPH-d by EPA Method 8015. • TPH-g, TPH-d and BTEX were not .detected in the soil sample collected from the soil borings. „ • MTBE was detected in two soil samples by EPA Method 8260. Samples MW6-15, MW6-30 ' and MW8-20 contained MTBE at concentrations of 95 microgram per kilogram (Atglkg), 14 ug/kg"and 16 ,ug/kg, respectively. • No other fuel additives were not detectedin',the soil samples analyzed.+ i Analytical results of soil samples are summarized on Table 3 and Table 4. The laboratory reports ' (MAI Laboratory I.D. No. 54774 to,54780), quality assurance and quality control (QA/QC) report ,, and chain-of-custody forms are included in Appendix D. _ 3.3. ' " GROUND WATER ELEVATION AND FLOW DIRECTION . During the November 2000 monitoring event, the depth to ground water at the site ranged from 10.42 to 13.28 feet below the tops of well casings'(btoc) (Table 1). Ground water elevation at the site ' ranged from 3.53 to 4.17 feet below mean sea level (MSL). Ground Water,elevation..in the, monitoring wells decreased an average of 1.1 feet since the previous monitoring event (July 2000). A summary of depth to ground water and ground water elevation measurements is presented in ' Table-1. A ground water.elevation contour map for November 2000 is illustrated on Figure 3. Based on ' groundwater elevation data, ground water flow direction is inferred to be toward the north. Ground'. water gradient for November 2000 was calculated to be 0.012. In general, ground water .flow• direction and gradient for this.monitoring event appear to be consistent with previous.monitoring ' events results. ' ,3.4. LABORATORY RESULTS.OF GROUNDWATER SAMPLES Ground water samples were collected from MW-3 through MW'8 for laboratory analysis. A summary of ground water analytical results.are presented in Table 2. The laboratory analytical report is.included in Appendix B_ tAdvanced GeoEnvironmental,Inc.