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Conclusions and Recommendations <br /> Groundwater flow direction was,northerly under a low calculated gradient and water levels in wells had declined <br /> about one-quarter foot since th2p previous quarter. In our opinion, the mapped contaminant dissolved plume - <br /> continues to occur near the center of the site, similar to historic site observations. The TPHG levels fluctuated in <br /> wells,with a decrease in MW-3 and MW-9 and a decrease in MW-2 compared to the first quarter 2003. <br /> Wright has completed and submitted a corrective action plan with a recommended cleanup approach for submittal to <br /> the PHS EHD for their review. Wright will discuss the PHS EHD review and potential cleanup selection and <br /> approach. The site is scheduled for continued quarterly monitoring at this time. <br /> Limitations <br /> This report has been prepared specifically for the Mr. Ed's Muffler (Cox and Cox) Site at 595 E. l lth Street in <br /> Tracy, and was done according to the current State and local agency suggested guidance documents for these <br /> investigations. The interpretations, conclusions and recommendations made herein are based on the data and <br /> analysis for the soil and water samples collected on-site and should be reviewed hi the context of this report and <br /> other site reports. „Please note that reports of contamination must be submitted to the agencies in a timely manner. <br /> Wright Environmental Services, Inc, is not responsible for errors in laboratory analysis and reporting, or for <br /> information not available during the course of the study, and no warranty or guarantee is expressed or implied <br /> therein. If you have any questions concerning this report,please call. <br /> Sincerely, ?,ED GFD <br /> Wright Environmental Services,Inc. �� ER�S�%R1 �'0 �0 <br /> N91262 <br /> John Lynch Ch CERTIFIEDED <br /> yn Christopher M.Palmer R <br /> E=Gi E <br /> Principal C. E.G. 1262; HG 246 GEQLQGI$T <br /> Attachments: Table 1. Historic Groundwater Levels and Contaminants <br /> Figure 1. Groundwater Contour Map,April 8,2003 <br /> Figure 2. Groundwater TPHG Plume Map,April 8,2003 <br /> Figure 3. Groundwater Benzene Plume Map,April 8,2003 <br /> Figure 4. Groundwater MTBE Plume Map,April 8,2003 <br /> Groundwater Sampling Information Sheets <br /> Chemical Analytical Data and Chain-of-Custody Forms <br /> cc : Mr . Gary. Cox <br /> `1r : Dennis Cox <br /> fir . Earl Breinstein <br /> �I <br /> Page 3 <br />