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S E C 0 R <br /> • CHARACTERIZATION STATUS <br /> k <br /> Contamination in soil has been adequately delineated Contamination in groundwater is defined <br /> in the downgradient direction (well MW-13) <br /> RECENT SUBMITTALSICORRESPONDENCE <br /> May 4, 2004— First Quarter 2004 Remedial Summary Report <br /> THIS QUARTER ACTIVITIES (Second Quarter 2004) „ <br /> 1 Performed quarterly groundwater monitoring and sampling (TRC) <br /> 2 Prepared and submitted a quarterly summary report <br /> ,x <br /> 3 Performed ozone sparge system operation and maintenance <br /> fi <br /> NEXT QUARTER ACTIVITIES (Third Quarter 2004) <br /> 1 Prepare and submit (by SECOR) a one quarterly report which documents all on going w <br /> activities at the site including quarterly sampling and remediation <br /> 2 Perform quarterly groundwater monitoring and sampling <br /> 3 Perform ozone sparge system operation and maintenance <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Based on second quarter groundwater monitoring data and monthly remedial system operation a <br /> and maintenance, SECOR recommends continued operation of the ozone sparge system <br /> SECOR recommends that during joint sampling with Shell, ConocoPhdlips' sampling contractor <br /> collect split samples from Shell wells S-2 and S-5 and analyze for fuel oxygenates to determine <br /> the delineation of MtBE and TBA <br /> e <br /> wrp� <br /> ay <br /> M <br /> a <br /> i <br /> �A <br />