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I <br />Ground water monitoring data collected on 22 May 2002 from wells <br />UW—BB MW -9A MW -9A, MW—lOB MW -11A MW -129 and MV -1313 <br />All units reported as feet relative to mean sea level <br />Ground water elevations relative to San doaqurn County Benchmark Datum No ZAA-13 4 <br />Ground water elevations of SECOND ZONE ground- water <br />N <br />N <br />N7 <br />STAR STREET <br />� -4W <br />UI -130 <br />—403 <br />—3 8o <br />1 <br />LEGEND <br />UW ,12B Flag City Chevron <br />—3 55 Ground Water Manitoring Ae1l iacatloa <br />with reported ground water elevation <br />Three B s 'truck Plaza <br />Ground water monitoring well location <br />—� Ground crater elevation contour line <br />® Domestic Drinking Water Well. location <br />® F.visting Building Structure <br />4 interred ground water flow direction <br />�+ and gradient <br />CQ <br />O <br />O <br />J� <br />Rome Diagram Showing Frequency of <br />y <br />Historical Ground ;Rater Flow Direction <br />it 1 <br />et Three H's Former Tank Pit Area <br />!P � <br />i <br />i <br />s 7 <br />Z <br />z <br />1 <br />Rose Diagram Showing Historical Ground <br />Hater Flow Direction and Gradient at <br />a <br />Flag City Chevron Tank Pit area <br />Hlue arrows Indicate data collected before <br />1� <br />start of ground nater pump—and—trent, <br />Red Arrows indicate data collected after <br />- <br />start—up of ground water pump—and—treat. <br />3 <br />CQ <br />O <br />O <br />d <br />Z <br />z <br />> <br />Z <br />> 4-~ <br />U <br />O <br />E- <br />H <br />U <br />� Q <br />0 <br />x <br />c7 <br />r4 <br />z <br />O <br />z <br />0 <br />u <br />C4 <br />Cn <br />