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Brownfields Site Assessment June 2014 South Gifford Road Landfill, Vero Beach,Florida 4. ASSESSMENT RESULTS 4.1 Overview During the assessment activities, soil and soil gas samples were analyzed pursuant to the EPA Region 4-approved Site-Specific QAPP. A summary of the assessment results is provided in the section below. Analytical laboratory reports are provided in Appendix B. 4.2 Soil Results The results of the soil analyses were compared to FDEP Residential (R-) and Commercial/Industrial (C/I-) Soil Cleanup Target Levels (SCTLs) per Chapter 62-777 Florida Administrative Code (F.A.C.). Comparison of the data to R-SCTLs was included as a conservative approach as future redevelopment options for the Site continue to be evaluated. Based on the current understanding of potential future Site uses (i.e., greenspace/recreational, municipal, and/or commercial/light industrial), C/I-SCTLs, or alternative cleanup levels based on proposed site use (e.g., recreational)will likely be more applicable than R-SCTLs. A summary of soil results is tabulated in Table 1 and presented on Figure 5. A summary of constituents detected in soil is tabulated in Appendix C and Benzo(a)pyrene (BaP) Toxicity Equivalence Quotient(TEQ) calculations are tabulated in Appendix D. Concentrations of arsenic, BaP and/or total BaP TEQ were observed in three soil sampling locations, SB100, SB109, and SBI 11, above default regulatory guidance, as follows: • arsenic was observed in SBIII from 0 to 0.5 ft BLS 3.9 milligrams per kilogram [mg/kgl), above the R-SCTL of 2.1 mg/kg; • BaP was detected in SB 100 from 0 to 0.5 ft BLS (0.6 mg/kg) above the R-SCTL of 0.1 mg/kg; • total calculated BaP TEQs were above the R-SCTL (0.1 mg/kg) in SB109 from 0 to 0.5 ft BLS (0.2 mg/kg) and SBI I1 from 0 to 0.5 ft BLS (0.2 mg/kg); and • total calculated BaP TEQ in SB 100 from 0 to 0.5 ft BLS (0.9 mg/kg) was above the C/I- SCTL of 0.7 mg/kg. Overall, the soil analytical results collected as part of this effort indicate three locations of elevated concentrations above conservative regulatory guidance at SB 100, SB 109, and SB111. Further evaluation of shallow soil impacts at each of these locations is warranted. FR0766H 9 7/812014