Laserfiche WebLink
I <br /> i <br /> ' 5.2 Ground Water Gradient <br /> i <br /> A ground water gradient map was produced from the data obtained from the December <br /> 21, 1995 sampling event (Figure 2) The elevations used in the calculation are <br /> summarized in Table 5 The ground water flow direction is toward the northwest during <br /> ' this sampling event This gradient and flow direction is consistent with previous <br /> monitoring events <br /> TABLE 5 <br /> Monitoring Well Water Elevations <br /> Well Date <br /> Well Collar Depth to Water Ground Water <br /> ' Number Elevation (feet) Elevation (feet) <br /> (feet) <br /> MW-1 12/21/95 5773 11 85 4588 <br /> MW-2 12/21/95 5882 1252 4630 <br /> ' MW-3 12/21/95 5828 1194 4634 <br /> MW-4 12/21/95 5749 1171 4578 <br /> MW-5 12/21/95 5788 1226 4562 <br /> ' <br /> Well <br /> 1 12/21/95 5738 1175 4563 <br /> M5.3 Discussion of Analytical Results <br /> Laboratory analysis of ground water samples collected during this sampling event <br /> indicate the presence of gasoline and gasoline constituents in two of the six monitoring <br /> wells The bailer blanks collected at MW-1 and MW-6 indicated non detectable levels for <br /> all analyzed constituents The travel blank was not analyzed during this sampling event <br /> Gasoline and gasoline constituents have increas--d in MW-1 compared to data obtained <br /> from the previous two sampling events However, the concentrations are similar to that <br /> present in August, 1994 and March, 1995 <br /> ' Gasoline and ethylbenzene increased slightly in MW-6 compared to previous sampling <br /> events Additionally, the constituents detected in MW-6 continue to be hydrocarbons that <br /> ' do not match the analytical laboratory's gasoline standard but elute within the same time <br /> frame This could be due to weathering of the hydrocarbons or natural degradation <br /> • American Geological Services,Inc <br /> CA95DE-029 <br /> 9 <br />