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' 05 March 2002 <br /> AGE-NC Project No 98-0465 <br /> ' Page 2 of 4 <br /> ' 40-m1 VOA vials containing 0 5 ml 18% hydrochloric acid as a sample preservative After <br /> collection, the samples were properly labeled, placed in a chilled container and transported under <br /> chain-of-custody to McCampbell Analytical, Inc (MAI) for analysis The samples were analyzed <br /> ' for <br /> C Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> ' accordance with EPA Methods 5 03 0/8015-Modified and 355018015-Modified,respectively <br /> Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether(MTBE) <br /> ' in accordance with EPA Method 8020, and <br /> C Fuel oxygenates - MTBE, di-Isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> tertiary-amyl methyl ether (TAME), and tertiary butanol (TBA) in accordance with EPA <br /> ' Method 8260 Modified <br /> 3.0. FINDINGS <br /> Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 15 January 2002,the contaminant Impact to ground water was quantified by the laboratory analytical <br /> data <br /> 1 <br /> 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION <br /> ' At the time of the January2002 sampling event depths to ground water ranged from 8 99 feet to <br /> 10 06 feet below the tops of the well casings Ground water elevations at the site ranged from 6 19 <br /> feet below mean sea level (MSL) in well MW3 to 6 42 feet below MSL in well MW2 (Table 1) <br /> During this monitoring event,the ground water level in the wells was approximately 4 10 to 5 06 feet <br /> ' below the tops of the well screens, indicating that the wells are screened properly and yield <br /> representative shallow ground water samples The relative ground water elevation at the site <br /> increased an average of 3 32 feet between the October 2001 and January 2002 monitoring events <br /> Monitoring data from MW 1 through MW4 was combined with monitoring well data collected from <br /> the adjacent Sanchez Property(1876 Country Club Boulevard)on 15 January 2002 to determine the <br /> ' approximate ground water flow direction Ground water flow at the site varied radially from <br /> northwest to northeast at an average gradient of 0 002 feet/feet Figure 3 Illustrates the contoured <br /> ground water elevations as measured on 15 January 2002 <br /> ' Advanced GeoEnvironmental,Inc <br />