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v Lug <br /> A S S O C I A T E S I N C <br /> consistent with the previous monitoring event Groundwater elevations have decreased since <br /> September 2002 <br /> RECOMMENDATIONS <br /> Based on the results of the fourth quarter 2002 monitoring episode, we recommend the <br /> following <br /> • Conducting the first quarter 2003 groundwater monitoring and sampling of wells MW1 <br /> through MW10, the air sparge well, the piezometers, and DW and analyze samples for <br /> TPHg, BTEX, and oxygenate fuel additives <br /> • Continue to monitor well MW2 for floating free product and maintain skimmer system <br /> Please contact our office at (209) 579-2221 if you have any questions or comments <br /> Respectfully submitted, <br /> ATC Associates Inc <br /> Casey Kipf <br /> Staff Geologist t `� y �� � <br /> Drew Van Allen }6.: "I ' t" <br /> Senior Project Manager LAP <br /> J �eHo <br /> sey, F E <br /> CA Registered Civil Engineer No 47410 <br /> cc Mr Phil Cohn <br /> Mr Warren Triesman <br /> James Barton, RWQCB <br /> w 1163931quartlyl4gr-2002 doc 5 <br />