This report describes the calendar year 2002 field activities associated with installing four new groundwater monitoring wells in the 200 West Area of the Hanford Site. Two groundwater monitoring wells are located around waste management area (WMA) TX-TY to support the ''Resource Conservation and Recovery Act of 1976'' (RCRA) and two groundwater monitoring wells are located in the 200-UP-1 and 200-ZP-1 operable units (OU) to support the ''Comprehensive Environmental Response, Compensation, and Liability Act of 1980'' (CERCLA).
This report describes the calendar year (CY) 2003 field activities associated with the installation of two new groundwater monitoring wells in the A-AX Waste Management Area (WMA) and four groundwater monitoring wells in WMA C in the 200 East Area of the Hanford Nuclear Reservation. All six wells were installed by Fluor Hanford Inc. (FH) for CH2M Hill Hanford Group, Inc. (CHG) in support of Draft Hanford Facility Agreement and Consent Order (Tri-Party Agreement) M-24-00 milestones and ''Resource Conservation and Recovery Act of 1976'' (RCRA) groundwater monitoring requirements. Drilling data for the six wells are summarized in Table 1.
This report describes the fiscal year (FY) 2003 field activities associated with the installation of one new groundwater monitoring well and two extraction wells in the 100-KR-4 and 200-ZP-1 Operable Units (OU's). A groundwater monitoring well and an extraction well were drilled in the 100-KR-4 OU and an extraction well was drilled in the 200-ZP-1 OU to support enhancement of the pump-and-treat system. Two boreholes were drilled and completed as wells in the 100-KR-4 OU. One of the boreholes was completed as a groundwater-monitoring well (199-K-l30/C4120) and the other was completed as an extraction well (199-K-l29/C4117). These wells are enhancements to the 100-KR-4 Pump-and-Treat Remediation System, which is designed to intercept contaminated groundwater flowing towards the Columbia River utilizing extraction wells, removing hexavalent chromium through ion exchange, and returning treated groundwater to the aquifer via injection wells located further inland. One borehole was drilled and completed as an extraction well in the 200-ZP-1 OU. Well (299-W15-45/C4119) will be connected to the 200-ZP-1 pump-and-treat system, and is a replacement for existing well 299-W15-33. Dropping water level and low yield at 299-W15-33 prompted the installation of well 299-W15-45 (C4119). Extraction well 299-W15-45 (C4119) will be used to remove carbon tetrachloride, chloroform, and trichloroethylene from the groundwater. Descriptions of drilling, sieve analyses, well completion, well development, pump installation, waste management, civil survey information, and well acceptance walkdown for the two operating units are discussed in Sections 2.0-6.0. Section 7.0 provides a detailed description of subsurface geology observed in the two operable units. Section 8.0 cites references used. Well summary sheets, geologic borehole logs, sieve analysis data, well construction summary reports, well development data, drawdown/recovery curves, and pump installation data are included in Appendices A-E.
This report addresses the evaluation of groundwater and surface water monitoring data obtained at the U.S. Department of Energy (DOE) Y-12 National Security Complex (Y-12) during calendar year (CY) 2002. Provisions of DOE Order 5400.1 (General Environmental Protection Program) require the evaluation of monitoring data to determine: (1) the quality of groundwater and surface water in areas that are (or could be) affected by Y-12 operations, (2) the quality of groundwater and surface water in areas where contaminants from Y-12 are most likely to migrate beyond the DOE Oak Ridge Reservation (ORR) property line, and (3) long-term trends in the quality of groundwater at Y-12. Section 2 (Background Information) of this report provides the overall hydrogeologic context for the respective monitoring data evaluations presented in Section 3 (Surveillance Monitoring Data Evaluation), Section 4 (Exit Pathway/Perimeter Monitoring Data Evaluation), and Section 5 (Groundwater Quality Trend Evaluation). The significant findings of each data evaluation are summarized in Section 6 (Conclusions and Recommendations) and Section 7 (References) lists the technical reports and documents cited for more detailed information. Referenced illustrations (maps and trend graphs) and data tables are presented in Appendix A and Appendix B, respectively.
