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State Road 60 and 431d Avenue - 2 - <br />Ardaman File No. 13-5402 <br />PROJECT APPROACH <br />The following scope of work describes the tasks necessary to preliminarily explore for the <br />presence of contamination in soils and groundwater in the limited areas of the project study area, <br />specifically at locations identified by FDOT. <br />Groundwater Sampling Wells <br />An additional 40 temporary groundwater sampling wells ("micro -wells") will be installed in <br />accessible areas in close proximity to the locations recommended by FDOT. The micro -wells will <br />be installed with a geoprobe using direct -push technology to an approximate depth of 15 feet and <br />will be screened across the encountered groundwater table level. The proposed shallow <br />micro -wells will be constructed of 1 -inch or 2 -inch diameter, 0.01 -inch slotted schedule 40 PVC <br />pipe. A summary of the proposed number and general location of the wells is provided in the <br />following table. <br />site <br />Address (Proximity to Intersection) <br />Proposed Number of Wells <br />Mark's Mobil <br />4310 201' Street (Northwest Comer) <br />4 <br />Former Texaco / Lennys Lounge <br />4315 201" Street (Southwest Corner) <br />4 <br />Former FINA #6644/Mobil <br />4395 20'" Street (200 Feet West) <br />6 <br />Former Union 76 <br />4233 20"' Street (Southeast Comer) <br />6 <br />Cumberland Farms <br />1925 431" Avenue (500 Feet South) <br />6 <br />Indian River Farms WCD <br />4400 20"' Street (Northwest Comer) <br />2 <br />Mermaid Car Wash <br />1935 43'° Avenue (450 Feet South) <br />2 <br />Strip Shopping Center <br />(Vero Beach Dry Cleaners <br />4201 - 4211 20"' Street (200 Feet East) <br />5 <br />Proposed Retention Pond <br />44"' Avenue <br />5 <br />Groundwater Sample Collection and Analysis <br />Groundwater samples obtained from the wells will be collected for laboratory analysis in general <br />accordance with FDEP sampling requirements. Groundwater samples collected from the wells <br />will be submitted to a State certified laboratory for analysis by EPA Methods 8021 (VOC's) and <br />8270 (PAH), and for Total Recoverable Petroleum Hydrocarbons (TRPH) by the FL -PRO method. <br />Soil Sampling and Analytical Testing <br />As requested by FDOT, five soil samples for chemical analyses will be collected from adjacent to <br />the locations of the temporary sampling wells to be installed in the proposed retention pond area. <br />The samples will be "composite" samples obtained from the top 24 inches of soil at each location. <br />According to the FDOT directive, the samples will be submitted for chemical analyses by EPA <br />Methods 8021 (VOC's) and 8270 (PAH); for TRPH by the FL -PRO method; for RCRA 8 Metals; <br />and for pesticides, herbicides and PCB's by EPA Methods 8081, 8082, 8141 A and 8151A. <br />Report Preparation <br />A report summarizing the above additional site assessment activities will be submitted upon <br />completion of the above-described scope of work. Details, descriptions and rationales for the <br />various site assessment activities will be presented, along with all data developed during the <br />assessment activities. The report will include the results of our findings relative to any identified <br />soil and/or groundwater contamination within the study area that may present limitations or <br />require special monitoring of contaminated media during construction of the proposed 38 <br />intersection widening project. <br />