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3.0 Technology for groundwater <br /> Jeff Morrison discussed the initial and secondary technology screening tables for <br /> groundwater. During the initial screening it was explained that many of the technologies <br /> were not stand-alone technologies, and that in some cases three technologies can be used on <br /> the same water. Discussions took place regarding various capping options and it was decided <br /> that maintaining a cap would be added to institutional controls and that capping as <br /> containment would be examined with respect to single barrier and double barrier caps. <br /> 4.0 ARARs <br /> Liz Dodge reviewed the ARARs that had been compiled for the Feasibility Study. They were <br /> divided into chemical-specific, location-specific, and action-specific ARARs as well as to-be- <br /> considered requirements. <br /> Philip Isorena presented a list of RWCQB ARARs and Liz Dodge said that she would review <br /> this list. <br /> 5.0 Status of data needs/collection <br /> Paula Bolio reviewed the status of additional data needs. These were discussed with respect <br /> to soil data in Area I, soil and groundwater data in Area II, and B Zone groundwater data in <br /> the vicinity of El Dorado Street. It was agreed that a site walk was needed in the near term to <br /> review the proposed sampling locations. <br /> It was agreed that five borings would be drilled in Area I, two near source area 1, two near <br /> source area 4, and one in a source area (such as source area 2). These borings would be <br /> drilled to the water table and sampled every five feet and at stratigraphic changes or observed <br /> contamination. Samples would be sent for PNA, BTEX, and TPH-diesel/gasoline analyses. <br /> The DI Wet test would be performed on four samples, two each from two soil borings. The <br /> DI west test would be performed on the sample with the highest concentration and on the <br /> sample closest to the water table from the same boring. <br /> It was agreed that in Area II there would be two or more soil borings from the area near MW- <br /> 23R for the purpose of examining the location of the TPH-diesel detected in groundwater at <br /> that location. Sample depths would be based on field observations and samples would be sent <br /> for BTEX and TPH-diesel/gasoline analysis. A few samples would be analyzed for PNAs. <br /> Soil and groundwater would be tested. <br /> It was agreed that the downgradient extent of PNAs in groundwater would be examined with <br /> drilling along El Dorado Street. One well would be drilled with Hydropunch samples taken <br /> during drilling through the A and B Zones. <br /> 2 <br />