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CATC <br /> . A S S O C I A T E S I N C <br /> GROUNDWATER FLOW DIRECTION <br /> Water level measurements were collected from wells MW 1 through MW3 on June 12, 2000 <br /> Water levels ranged from 22 96 to 23 59 feet below the tops of the well casing elevations, <br /> representing an average increase in the water table elevation of approximately 0 17 feet since <br /> March 2000 The water level data were used to develop the groundwater elevation contour map <br /> (Figure 3) Assuming that horizontal isotropic conditions prevail, groundwater in the uppermost <br /> aquifer beneath the site flowed towards the northeast The average hydraulic gradient on June 12, <br /> 2000 was calculated to be 0 002 ft/ft or approximately 9 ft/mile A summary of groundwater <br /> monitoring data is presented in Table 1 <br /> CONCLUSIONS <br /> Concentrations of petroleum hydrocarbon constituents generally increased in well MW1, and <br /> decreased in wells MW2 and MM3 since the previous sampling event The direction of <br /> groundwater flow has shifted from northwest to northeast and groundwater elevations have <br /> increased since March 2000 <br /> . RECOMMENDATIONS <br /> Based on the results of the second quarter 2000 monitoring episode, we recommend the <br /> following <br /> • Perform Third Quarter 2000 groundwater monitoring event in September 2000 <br /> Groundwater samples should be analyzed for TPHg and BTEX <br /> 0 <br /> w\149811quw lyl2gr-2000 doc 3 <br />