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Brownfields Site Assessment June 2014 South Gifford Road Landfill, Vero Beach, Florida BLS. Soils were lithologically logged and visual observations were noted in field logs. Four proposed sample locations were not sampled: (i) two locations were not sampled because waste was encountered within the proposed sample interval (i.e., shallower than 2 ft BLS); and (ii) two locations were not sampled because they were inaccessible. Soil samples were collected in general accordance with FDEP Standard Operating Procedures (SOPs). A global positioning system (GPS) unit with sub -meter accuracy was used to navigate to each proposed soil boring location prior to sampling activities. Soil samples were couriered to Accutest Southeast Laboratory (Accutest) in Orlando, Florida under chain of custody protocol for laboratory analysis of RCRA metals by USEPA Method 6010 and SVOCs by USEPA Method 8270 and Method 8270 select ion monitoring (SIM). A subset of the soil samples (18 locations) were also analyzed for VOCs by USEPA Method 8260, OCPs by USEPA Method 8081, OPPs by USEPA Method 8141, and chlorinated herbicides by USEPA Method 8151. 3.3 Landfill Cover Evaluation An evaluation of the existing landfill cover was conducted on 4 April 2014. A mini -excavator operated by IRC personnel was used to excavate test pits to approximately 4 ft BLS to evaluate cover thickness at ten locations (TP -101 through TP -110 shown on Figure 4) in the assessment area. Observations recorded from each soil boring location completed as part of the activities described in Section 3.2 and test pits completed in 2008 were used to select the test pit locations for TP -101 through TP -110. Waste material encountered was segregated from cover soil by the IRC mini -excavator operator. Excavated materials were temporarily staged on plastic sheeting to prevent contact of the waste materials with undisturbed cover. The cover thickness and presence or absence of waste to 4 ft BLS was documented in field notes and photographs at each test pit location. Test pits were backfilled by the IRC mini -excavator operator using excavated material, placing cover material on top of the waste. A GPS unit with sub -meter accuracy was used to navigate to each test pit location prior to excavation. 3.4 Soil Gas Probe Installation and Sampling Eight temporary soil gas probes (LFGOI through LFG08) were installed in the assessment area (Figure 4) on 10 April 2014, to evaluate the composition of soil gas. Soil gas probes were constructed of 3/4 -inch diameter polyvinyl chloride (PVC) and 0.010 -inch slotted screen. Probes were screened from 1 ft BLS to the water table, and screen intervals ranged from three to five ft. A 20/30 sand filter pack was placed in the annular space from the base of the screen to approximately six inches BLS. Hydrated bentonite was placed in the annular space above the sand filter pack flush with the ground surface. Probes were installed using a decontaminated hand auger. Probe locations were selected based on observations recorded from soil boring FR0766H 7 7/8/2014