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Geosyntec`� <br /> Appendix B includes sieve sample analysis results for soil samples collected from the boring at <br /> PW43. <br /> In the immediate vicinity of EW-18, there are existing boring logs and sulfolane results for the <br /> PW30 monitoring wells, which were used in the selection of the design details for EW-18A and <br /> EW-18B. A summary of the proposed well construction details is included in Table 1. At EW- <br /> 18A the target total borehole depth is 100 feet bgs, target screen interval is 70 to 95 feet bgs and <br /> the recent sulfolane concentrations in the closest monitoring well at this depth was 920 gg/L. At <br /> EW-18B the target total borehole depth is 190 feet bgs, target screen interval is 110 to 185 feet <br /> bgs and the recent sulfolane concentrations in nearby monitoring wells at this depth range from <br /> 3,600 to 3,800 gg/L. The proposed well construction diagrams for EW-18A and EW-I8B are <br /> shown in Figures 4 and 5, respectively. The actual construction details and depths for EW-18A <br /> and EW-18B may be modified based on geophysical logging of the new extraction well <br /> boreholes. <br /> In the immediate vicinity of EW-19, there are existing boring logs and sulfolane results for the <br /> PWOI, and PW43 monitoring wells, which were used in the selection of the design details for <br /> EW-19. A summary of the proposed well construction details is included in Table 1. At EW-19 <br /> the target total borehole depth is 275 feet bgs, target screen interval is 185 to 270 feet bgs and the <br /> recent sulfolane concentrations in nearby monitoring wells at this depth range from 600 to 3,100 <br /> gg/L. The proposed well construction diagram for EW-19 is shown in Figure 6. The actual <br /> construction details and depth for EW-19 may be modified based on geophysical logging of the <br /> new extraction well borehole. <br /> Extraction Well Installation Work Plan 3 November 30,2018 <br />