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Borehole Data Package for 1998 Wells Installed at Single-Shell Tank Waste Management Area TX-TY

机译：安装在单壳罐废物管理区TX-TY的1998井的钻井数据包

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Four new Resource Conservation and Recovery Act (RCRA) groundwater monitoring wells were installed at the single-shell tank farm Waste Management Area (WMA) TX-TY during August through November of 1998 in fullfillment of Tri-Party Agreement (Eoology 1996) milestone M-24-38. The wells are 299-W1O-26, 299- W14-13, 299-W14-14, and 299-W15-40. Well 299-W1O-26 is located outside the east fence of the TY tank farm and replaces downgradient well 299-W10-18; well 299-W14-13 is located along the east fence near the northeast corner of the TX tank farm and replaces downgradient well 299-W10-18; well 299-W14-13 is located outside the east fence in the south half of the TX tank farm and is anew downgradient well; and well 299-W15-40 is located on the west side of the TX tank farm and is a new upgradient well. The locations of all wells in the monitoring network are shown on Figure 1. The groundwater monitoring plan for WMA TX-TY (Caggiano and Goodwin 1991) describes the hydrogeology of the 200 West Area and WMA TX-TY. An Interim Change Notice to the groundwater monitoring plan provides justification for the new wells. The new wells were constructed to the specifications and requirements described in Washington Administrative Code (WAC) 173-160 and WAC 173-303. This document compiles information on the drilling and construction, well development pump installation; groundwater sampling, and sediment testing applicable to wells 299-W1O-26, 299-W14-13, 299- W14-14, and 299-W15-40. Appendix A contains the geologist's log, the Well Construction Summary Report; and Well Summary Sheet (as-built diagram); Appendix B contains results of laboratory analyses of particle size distribution, ph conductivity, calcium carbonate content; major cation and anion concentrations from 1:1 water: sediment extracts, and moisture content: Appendix C contains geophysical logs; and Appendix D contains the analytical results from groundwater samples obtained during well construction. Aqutier tests (slug tests) were performed on all the new wells after well completions. Results of the aquifer tests will be reported elsewhere. Addition documentation concerning well construction is on file with Bechtel Hanford, Inc., Richland, Washington.

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