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PCA as Intersection of SR 60 and 43rd Avenue - 2 - <br /> Ardaman Proposal No . 12-3836 <br /> I . Preliminary Contamination Assessment <br /> The initial assessment activities and laboratory analyses described below are designed to <br /> preliminarily explore subsurface conditions , and adhere to the criteria established in FAC 62-770 . <br /> All samples collected during this assessment will be provided to a National Environmental <br /> Laboratory Accreditation Conference ( NELAC) certified laboratory for analysis . <br /> The proposed environmental activities will produce various investigation-derived wastes ( IDW ) <br /> including but not limited to: decontamination fluids ; soil cuttings ; well development water; and well <br /> purge water. We have assumed that IDW can be handled as non -hazardous . For budgetary <br /> purposes, we have included an allowance for drumming IDW as necessary. <br /> A. Soil Sampling , Soil Screeninq and Analytical Testing <br /> Up to 70 auger borings will be conducted to a depth of 2 to 3 feet below the encountered <br /> groundwater table or to a maximum depth of 7 feet at accessible locations within the existing <br /> and/ora right-of-way expansion areas adjacent to the sites identified in the CSER as <br /> having "medium" and "high" potential for contamination . The auger borings will be conducted <br /> using a 3-inch diameter, hand-held bucket auger. Soil samples will be obtained during <br /> performance of the borings at approximate 2-foot intervals . These samples will be placed in <br /> 16-ounce glass sample jars , half-filled , in general accordance with FAC 62-770 . A sample of soil <br /> gas will be withdrawn using the vacuum pump of an organic vapor analyzing (OVA) device <br /> (Century 128 OVA) . Soil samples collected will also be observed for indications of stains, <br /> sheens and unusual odors . A summary of the proposed number and approximate location of the <br /> borings is provided in the following table . <br /> . . <br /> Site Address (ProxIMIty,to -Intersection) Proposed Number and Location=of Borings <br /> IN <br /> Mark's Mobil 4310 2e Street (Northwest Comer) Four along 43'" Avenue and four along 20th Street <br /> Former Texaco / Lenny's Lounge 4315 20"' Street (Southwest Comer) Four along 43'" Avenue and four along 20"' Street <br /> Former FINA #6644/Mobil 4395 20'" Street (200 Feet West) Four along 20th Street <br /> Former Union 76 4233 20"' Street (Southeast Comer) Four along 43 d Avenue and four along 20th Street <br /> Cumberland Farms 1925 43rdAvenue (500 Feet South) Four along 43rd Avenue <br /> Indian River Farms WCD 4400 20th Street (Northwest Comer) Four along 43'" Avenue and four along 20th Street <br /> Quick Snack and Coin Laundry 4236 20th Street (Northeast Comer) Four along 43'" Avenue and four along 20th Street <br /> Mermaid Car Wash 1935 43'" Avenue (450 Feet South) Three along 43'" Avenue <br /> MMMMMOMMW <br /> Strip Shopping Center 4201 - 4211 20th Street (200 Feet East) Five along 20th Street <br /> (Vero Beach Dry Cleaners <br /> In addition , up to 12 soil samples will be collected from select boring locations for chemical <br /> analyses . The samples will be "grab" samples obtained from locations and depths that Will be <br /> determined based on the results of the soils screening and/or proximity to sites most likely <br /> believed to have contamination . The samples will be submitted for chemical analyses by EPA <br /> Methods 8020 and 8270 and for TRPH by the FL-PRO method . Additionally, up to six of the <br /> samples will also be analyzed by EPA Method 8010 . <br /> Be Groundwater SamDling Wells <br /> Temporary groundwater sampling wells will be installed at locations determined based on findings <br /> during the assessment. For budgeting purposes , we have preliminarily assumed up to 26 <br /> shallow wells (to a maximum depth of 10 feet) will be needed to explore for the presence of <br /> groundwater contamination . The locations of the wells and actual depths will be determined <br />
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