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Brownfields Site Assessment <br />June 2014 <br />South Gifford Road Landfill. Vero Beach, Florida <br />4. ASSESSMENT RESULTS <br />4.1 Overview <br />During the assessment activities, soil and soil gas samples were analyzed pursuant to the EPA <br />Region 4 -approved Site -Specific QAPP. A summary of the assessment results is provided in the <br />section below. Analytical laboratory reports are provided in Appendix B. <br />4.2 Soil Results <br />The results of the soil analyses were compared to FDEP Residential (R-) and <br />Commercial/Industrial (C/I-) Soil Cleanup Target Levels (SCTLs) per Chapter 62-777 Florida <br />Administrative Code (F.A.C.). Comparison of the data to R-SCTLs was included as a <br />conservative approach as future redevelopment options for the Site continue to be evaluated. <br />Based on the current understanding of potential future Site uses (i.e., greenspace/recreational, <br />municipal, and/or commercial/light industrial), C/I-SCTLs, or alternative cleanup levels based on <br />proposed site use (e.g., recreational) will likely be more applicable than R-SCTLs. <br />A summary of soil results is tabulated in Table 1 and presented on Figure 5. A summary of <br />constituents detected in soil is tabulated in Appendix C and Benzo(a)pyrene (BaP) Toxicity <br />Equivalence Quotient (TEQ) calculations are tabulated in Appendix D. <br />Concentrations of arsenic, BaP and/or total BaP TEQ were observed in three soil sampling <br />locations, SB 100, SB 109, and SB 111, above default regulatory guidance, as follows: <br />• arsenic was observed in SBI 11 from 0 to 0.5 ft BLS 3.9 milligrams per kilogram <br />[mg/kg]), above the R-SCTL of 2.1 mg/kg; <br />• BaP was detected in SB 100 from 0 to 0.5 ft BLS (0.6 mg/kg) above the R-SCTL of 0.1 <br />mg/kg; <br />• total calculated BaP TEQs were above the R-SCTL (0.1 mg/kg) in SB 109 from 0 to 0.5 ft <br />BLS (0.2 mg/kg) and SB 111 from 0 to 0.5 ft BLS (0.2 mg/kg); and <br />• total calculated BaP TEQ in SB 100 from 0 to 0.5 ft BLS (0.9 mg/kg) was above the C/I- <br />SCTL of 0.7 mg/kg. <br />Overall, the soil analytical results collected as part of this effort indicate three locations of <br />elevated concentrations above conservative regulatory guidance at SB 100, SB 109, and SB 111. <br />Further evaluation of shallow soil impacts at each of these locations is warranted. <br />FR0766H 9 7/8/2014 <br />