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Mr . Terry Southard 24 March 2010 Page 3 current concentration of 213 milligrams per liter ( mg/ L) in the groundwater samples from MW06 then additional assessment and /or reporting may be required to evaluate the extent of horizontal contamination in groundwater near MW06 . If we find during completion of this task that additional sampling and /or reporting work, is necessary , we will discuss our recommendations with you and seek approval prior to proceeding . For each of the proposed quarterly NAM monitoring events , Geosyntec ' s Findings obtained through the evaluation of the sampling documentation provided by TRC will be presented in a report for submission to FDEP . Please note that Geosyntec has included budget in this task for the review and evaluation of data package by IRC 's subcontractor of the field activities and the laboratory results of the groundwater sampling effort. This report will provide details of the work performed by IRC ' s sampling subcontractor including sample locations , sampling methodology , analytical results and groundwater elevations . A draft report will be provided to You for review and comment before the final version is submitted to FDEP . Geosyntec will submit one hard copy and one electronic copy of each final quarterly groundwater NAM report to the FDEP and one hard copy and a PDF on CD will be provided to you . ASSUMPTIONS In addition to the above , the following assumptions were made in developing this scope and cost estimate : ® As IRC requested be done , IRC will address all related issues regarding the following text contained in FDEP ' s letter dated 21 December 2009 and provide Geosyntec the related documentation : The Manager of the Indian River County Department that resides on the property to the west and north of the Indian River County North RO facility must be notified in writing that the sodium plume has been partially defined and may extend onto the property west of the site and that groundwater monitoring with specific conditions has been approved instead of further assessment at this time. In addition, the Indian River County Board must be notified in writing that the sodium plume may extend onto an adjacent Indian River County property and that monitoring with specific conditions rather than further assessment has been granted at this time . A copy of this letter shall be provided to both parties. Please provide copies of your letters to the Department. If either party requests that the plume be defined further, then the Department will require the extent of the sodiuin plume to be defined completely. IRC will notify FDEP of the date of each of the proposed four (4 ) quarterly sampling events at least 3 days in advance of sampling . XR10051 /XR10051 IRC North RO NAM Reporting Proposal . Doc engineers I scientists I innovators