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n r <br /> Conclusions and Recommendations <br /> Groundwater flow direction was northerly under a low calculated gradient Dissolved <br /> contaminant concentrations have decreased slightly in the wells MW-3 and MW-9, and thin SPP <br /> was observed in these two wells In our opinion, the mapped contaminant dissolved plume <br /> continues to occur near the center of the site, similar to historic observations <br /> PHS-EHD has reviewed the investigation data and has requested a summary Problem Assessment <br /> Report as a submittal for possible site closure Wright has requested the budget from the Client <br /> for this work, and when approved, will proceed with report preparation The site is scheduled <br /> 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 <br /> 11 th Street in Tracy, and was done according to the current--State and local agency suggested <br /> guidance documents for these investigations The interpretations, conclusions and <br /> recommendations made herein are based on the data and analysis for the soil and water samples <br /> collected on-site and should be reviewed in the context of this report and other site reports <br /> 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 <br /> reporting, nor for information not available during the course of the study, and no warranty or <br /> guarantee is expressed or implied therein If you have any questions concerning this report, <br /> please call <br /> Sincerely, <br /> Wright Environmental Services, Inc <br /> t � N2 1262 <br /> CEURED <br /> Scott Cragin Christopher M PalmerESRC;'J"G <br /> Staff Biologist C E G 1262, HG 246 GEOLOUST <br /> Attachments Table 1 Historic Groundwater Levels and Contaminants <br /> Figure 1 Groundwater Contour Map, Nov 11, 2001 <br /> Figure 2 Groundwater TPHG Plume Map, Nov 11, 2001 <br /> Figure 3 Groundwater Benzene Plume Map, Nov 11, 2001 <br /> Groundwater Sampling Information Sheets <br /> Chemical Analytical Data and Chain-of-Custody Forms <br /> • <br /> Page 3 <br />