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Fourth Quarter 2003, Groundwater Monitoring Report <br /> January 30, 2004 <br /> . Page 3 <br /> both sites are summarized for TPHg, benzene, and MtBE in Figure 3 Chevron's and Arco's <br /> groundwater elevation and analytical data is summarized in Tables 1 and 2, respectively Chevron's <br /> and Arco's groundwater analytical data for oxygenated compounds is presented in Tables 3 and 4, <br /> respectively Historical groundwater gradient data is presented in Table 5 Field and laboratory <br /> procedures are presented in Attachment B Chevron's laboratory analytical results, chain-of-custody <br /> documents, and field data sheets are provided as Attachment C Arco's laboratory analytical results, <br /> chain-of-custody documents, and field data sheets are provided as Attachment D <br /> REMEDIAL RESULTS SUMMARY (ARCO) <br /> Cumulative FP Recovered to Date 642 lbs <br /> Cumulative TPHg Removed by GWE 3,980 lbs <br /> Total Groundwater Extracted 32,000,000 gal <br /> TPHg Removed by SVE this quarter None <br /> Cumulative TPHg Removed by SVE 4,897 lbs <br /> MtBE Removed this Quarter None <br /> Cumulative MtBE Removed 4 5 lbs <br /> Approximate Depth to Groundwater 8 63—9 48 ft <br /> ARCO's historical SVE data and recent AS system operational data is presented in detail as <br /> Attachment A Chevron's operational data has been reported in a separate operation and <br /> maintenance report, but will be included in this report for future groundwater monitoring reporting <br /> STATEMENT OF LIMITATIONS <br /> This report presents our understanding of existing conditions at the subject site The conclusions <br /> contained herein are based on the analytical results, and professional judgment in accordance with <br /> current standards of professional practice, no other warranty is expressed or implied SECOR <br /> assumes no responsibility for exploratory borings or data reported by other consultants or <br /> contractors <br /> Should you have any questions or concerns regarding these activities, please feel free to contact <br /> Greg McIver at 916-861-0400, ext 279, or Rusty Benkosky at ext 229 <br /> Sincerely, <br /> SECOR International IncorporatedQ¢ <br /> T�j <br /> reg Mcly Rusty ,enkosky, P NaC058�g <br /> Project Man Senior Engineer * E*1?�391� <br /> Nj L, � �.'`�' <br /> OF CAL`F8 <br /> 11Chevron1942751Periodic Mon itonng\QMR1200314Q03 revised QMR Chev and Arcot doe <br />