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monitoring wells The last three quarterly monitoring rounds, <br /> however, have produced consistent analytical results All wells, <br /> with the exception of MW8, which is closest to the tank field, <br /> have detected no TFH or BTEX during this period The water <br /> samples from MW8 have shown consistently low values for these <br /> constituents This is reflective of the relatively low values <br /> observed in the soil samples collected during the drilling of <br /> MW8 <br /> CONCLUSIONS <br /> 1 Four monitor wells were sampled MW3 , MW4 , and MW6 <br /> showed no detectable levels of contamination <br /> 2 . MW8 indicated low levels of Total Fuel Hydrocarbons as <br /> gasoline of 28 ppm and Benzene of 130 ppb <br /> 3 The ground water flow direction is presently in a south, <br /> southeasterly direction The current elevation gradient <br /> between MW2 and MW7 averages 0 006 feet per linear foot <br /> 4 S1 and S2 were not sampled, these wells were dry <br /> LIMITATIONS <br /> The discussion and conclusions presented in this report are based <br /> on the following <br /> 1 The observations and data collected by field personnel <br /> 2 The results of laboratory analyses performed by a state <br /> certified lab. <br /> 3 Our understanding of the regulations of the State of <br /> California and San Joaquin County and/or City of Lodi, <br /> California. <br /> 4 Review of existing literature concerning this site and the <br /> San Joaquin County area <br /> Changes in ground water conditions can occur due to variations in <br /> rainfall, temperature, local and regional water usage and local <br /> construction practices In addition, variations in the soil and <br /> ground water conditions could exist beyond the points explored in <br /> this investigation. <br /> 5 <br />