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1-14 ` t 1 ' 23 December 2003,, NI r AGE-NC Project No 97-0333 t I Page 7 of 1=1 E downward gradient was observed between the upper and lower Second Zone Near neutral gradients ! I , were observed at all other locations ' _1 The 18 August 2003 groundwater elevation data collected from the Rainwater Car Wash site was plotted for the informal First Zone, Second Zone, Third `Zone and Primary Aquifer Zone f' hydrogeologic flow units, and are depicted in Figures 4 through 7 J I 3 5 1 1 First Zone Aquifer ' Ground water elevation data collected in the First Zone Aquifer (15 to 47'feet bsg) inferred an ` inward-radiating ground water flow towards a ground water depression in the area of wells EW-1 and MW-7A(Figure 4), ground water gradients ranged from 0 007 ft/ft or less to greater than0 025 ft/ft within the depression I II i� F i I 3 5 12 Second Zone Aquifer a s Ground water elevation data collected in the Second Zone Aquifer {58 to 92 feet bsg} inferred a west-northwest ground water flow direction Ground water gradients were approximately 0 001 ft/ft' 1 or less near,the site (Figure 5) 1 1 r II 35 13 Third Zone Aquifer ' ;! Ground water elevation data collected in the Third Zone Aquifer (102 to 120 feet bsg) inferred a r E northwest ground water flow direction Ground water gradients were approximately 0 004 ft/ft or' ` f I � less near the site (Figure 6) I rl ' ! , 13'5 14 Primary Aquifer Zone I' c l Ground water elevation data collected in the Primary Aquifer Zone(128 6;150 feet bsg)inferred a northwest ground water flow�direction Ground water gradients were approximately 0 001 ft/tt or less'near the site (Figure 7) II I II I 7 1 1 t 'I I 1{11'1 i I i I r 4 al ! t I I ' I Ir Advanced GeoEnvironmental,Inc r ! I I Ir II I ! t I II r,l ' i 1 �! Ij i' I n !'r I•I ! ! 111 � ' �I