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Mr Himanshu H. Mehta, P.E. <br />23 May 2014 <br />Page 4 <br />Groundwater sampling activities will be executed using a two -person sampling crew and will be <br />performed in general accordance with the FDEP Standard Operating Procedures (SOPs). The <br />proposed annual field event will be conducted in summer 2014 (tentatively in June) and will <br />include sampling of 59 monitoring wells (43 wells using PDBs and 16 wells with traditional <br />sampling techniques). The annual field event is budgeted to include four days for groundwater <br />sampling activities and one day for PDB deployment for the next sampling event (total of five <br />field days). The proposed semi-annual field event will be conducted in winter 2014 (tentatively <br />in December) and will include sampling of 30 monitoring wells (29 wells using PDBs and 1 well <br />with traditional sampling techniques). The semi-annual field event is budgeted to include two <br />days for groundwater sampling activities and one day for PDB deployment for the next sampling <br />event (total of three days) Consistent field documentation and field protocols will be utilized to <br />develop reliable data to support the natural attenuation of the groundwater plume The <br />groundwater samples will be analyzed in accordance with the sampling plan summarized in the <br />December 2013 Semi -Annual Groundwater Monitoring Report. <br />Geosyntec will conduct a complete round of groundwater level measurements coincident with <br />each semi-annual groundwater sampling event (budgeted for one day with two -person field team <br />for each event). Depth to groundwater measurements will be recorded to the nearest 0.01 -ft in <br />each monitoring well, including existing monitoring wells and applicable City of Vero Beach <br />wells (assumed up to 88 wells per event). <br />It is anticipated that purge water (investigation -derived waste [IDW]) will be containerized in <br />55 -gallon polyethylene drums and temporarily staged on Site for characterization prior to <br />removal and disposal. Costs are included herein for three 55 -gallon polyethylene drums, <br />analysis of three TCLP sample for IDW characterization, and two transport trips. <br />Overall, budget has been included for ten field days with a two -person team (i.e., 20 man days) <br />and associated field expenses. <br />Task 5 - Data Evaluation and Semi -Annual Reporting: Under this task Geosyntec will <br />perform data evaluation activities and prepare two semi-annual reports for submittal to FDEP. <br />Data evaluation activities will include database management, screening results against applicable <br />regulatory criteria, GIS figure preparation, time trend analyses, and/or statistical data analyses. <br />The results of groundwater sampling associated with the CVOC plume monitoring will be <br />presented in a report supported by attachments containing Chain -of -Custody sheets, field notes <br />and observations water sampling logs, maps, graphs, analytical results, and any other applicable <br />materials. The draft reports will be submitted to IRC SWDD for review prior to submittal to <br />FDEP. Each final semi-annual report will be signed and sealed by a Florida registered <br />professional engineer or geologist. <br />XR14096\PR14027 20140523 REV <br />engineers 1 scientists 1 innovators <br />