ARCHIVED REPORTS XR0000741 - Laserfiche WebLink

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S E C 0 R time proved in TRC's Groundwater Monitoring Report dated November 29, 2004 is included as Attachment A. Based on TPPH, benzene, and MtBE isoconcent ration maps (Figures 3, 4, and 5 in Attachment A) the plume is delineated in all directions with the exception of northeast of MW-16. REMEDATION STATUS r No active remediation. 'A CHARACTERIZATION STATUS Contamination in soil has been adequately delineated. Contamination in groundwater has been delineated in all directions except northeast of well MW-16. WASTE DISPOSAL SUMMARY The volume of purged groundwater generated and disposed of during the quarterly groundwater monitoring event will be reported in TRC's quarterly report. RECENT SUBMITTALS/CORRESPONDENCE ,i September 27, 2004 — San Joaquin County approval letter for Work Plan for Well Installation and Vertical Assessment dated September 7, 2004 • December 9, 2004 — SECOR submitted San Joaquin County welllboring permit applications for wells and borings outlined in the Work Plan for Well Installation andY Vertical Assessment dated September 7, 2004 THIS QUARTER ACTIVITIES (Fourth Quarter 2004) 1. Performed quarterly groundwater monitoring and sampling (TRC). Y,r. 2. Prepared and submitted a quarterly summary report. NEXT QUARTER ACTIVITIES (First Quarter 2004) F' 1. Prepare and submit a quarterly summary report. 2. Perform quarterly groundwater monitoring and sampling. , 3. Perform well installation and vertical assessment and submit results in a Site Conceptual Model. CONCLUSIONS AND RECOMMENDATIONS Based on the fourthy quarter groundwater monitoring and sampling and data TPPH, benzene, and MtBE are fully delineated with the exception of northeast of well MW-16. SECOR has submitted a work plan for the installation of additional wells downgradient of . MW-16 that should complete delineation and San Joaquin County has approved the work plan. Upon the completion of work outlined in Work Plan for Well Installation and 1' ;:SF