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r , <br /> r • 12 February 2004 ' <br /> AGE-NC'Prod ect No 00-0769 <br />' Page 3of7 <br /> 1 The ground water elevation data collected from the site and the adjacent Are Pump`and Weld site <br />' were plotted for the informal HU-1 Ground water elevation data collected from the site and wells <br /> off-site were plotted for the informal HU-2 through HU-4 hydrogeologic flow units Several <br /> monitoring points presented anomalous ground water elevations, this data was discounted and not <br />' interpolated with ground water elevations from surrounding wells Ground water elevation data is <br /> presented in Table 1 and contoured ground water elevation data is presented in Figures 3-6 The <br /> elevation and gradient for each unit is descnbed below <br />' 1 <br /> HU-1 <br /> Y F <br /> Based on ground water elevation data collected in'HU-1'Upper Zone (25 to 51 feet bsg) with the <br /> exception of wells MW-3B and MW-5A, the ground water flow forms a trough plunging to the <br />' northeast,with the northwest limb flowing north-northeast at a gradient of approximately 0 002 ft/ft ' <br /> and the southwest hinb flowing southeast at a gradient of approximately 0 002 ft/ft (Figure 3) <br /> HU-2 u <br /> Based on ground water elevation data collected in HU-2(112 to 125 feet bsg)with the exception of <br /> I well MW-5B, the ground water flow forms another trough plunging to the east-northeast The <br />' northwest limb flows north-northeast at a gradient of approximately 0 002 ft/fl and the southwest <br /> limb flows to the southeast at a gradient of approximately 0 002 ft/ft (Figure 4) <br /> 1 <br /> I r ' <br /> HU-3 „ <br />' Based on ground water elevation data collected in HU-3 (140 to 160 feet bsg), with the exception <br /> of well MW-5C, the ground water flows east-northeast The northwest limb flows northeast at a <br /> gradient of approxfmately'0 001 ft/ft and the southwest limb flows to the southeast at a gradient of <br />' approximately 0 0017 ft/ft (Figure 5) , <br /> I <br /> v <br /> HU-4 , <br /> i Based,on ground water elevation data collected m�HU4(160 to 175 feet bsg)with the exception of <br /> well MW-5D, the ground water generally flows-north to northeast,east of the site The water trends <br /> (map left-west to map right - east) in an arc from northwest at 0 009 ft/ft to almost north at 0 006 <br />' ft/ft to northeast at 0 01 ft/ft (Figure 6) <br /> I I 1 <br /> , <br /> i I <br /> ' Advanced GeoEnvironmental,Inc <br /> t 6 <br /> . 1 <br /> r ' <br /> 1 <br /> r 1 > <br /> 1 1 <br />