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FINAL • DDRWIVarpe Well Installation Woj k Plan <br /> 1.0 INTRODUCTION • Maintenance of 133 existing monitorir g, <br /> extraction, and dewatering wells; and <br /> 1.1 The purpose of this document is to describe <br /> the specific field activities to be performed in • Evaluating the performance of the Cei itral <br /> support of remediation efforts at Defense Area injection wells. <br /> Distribution Region West(DDRW)-Sharpe. <br /> Recommendations from the DDRW-Sharpe 2.1.2 All proposed well locations, as wel as <br /> 1995 Federal Facility Agreement(FFA)Annual wells scheduled for abandonment and <br /> Progress Report(Radian, 1996a) to install and maintenance are shown on Figure 2-1.Work to <br /> develop three monitoring well clusters and a be accomplished under this work plan will be <br /> piezometer cluster and abandon 35 existing performed in two phases, on-installation 01ase <br /> wells are included in this work plan. 1) and off-installation(Phase 2); off-installation <br /> Performance of well maintenance and surveying right-of-entry cannot be obtained until property <br /> of existing wells and other landmarks, as easements are acquired. <br /> recommended during the First Quarter 1996 <br /> Well Monitoring Program wrap-up meeting, are 2.2 Monitoring Well/Piezometer <br /> also included in this work plan. Installation <br /> 1.2 This project-specific work plan is an 2.2.1 The 1995 FFA Annual Progress R port <br /> addendum to the Comprehensive Field Work recommended the installation of three gro nd- <br /> Plan(Radian, 1996b) for all field activities at water monitoring well clusters and one <br /> DDRW-Sharpel Tracy. General procedures, groundwater piezometer cluster.The well will <br /> specifications, and requirements for the work to be installed and developed according to tl e <br /> be performed as described in this project- general procedures described in the <br /> specific work plan are presented in the Comprehensive Field Work Plan.Propost d <br /> Comprehensive Field Work Plan and will be monitoring well/piezometer locations are 3hown <br /> performed as set forth in that plan. in Figure 2-1.All borings drilled for the <br /> monitoring wells and piezometers will be <br /> 2.0 FIELD WORK SUMMARY logged, and all well specifications will be <br /> 2.1 Well Management Task represented in well construction diagrams. <br /> Specific details regarding well/piezomete <br /> Activities boring drilling and construction are prese ted in <br /> Sections 3.0 and 4.0, respectively.Tables 2-la <br /> 2.1.1 The work to be performed during this and 2-lb list proposed construction <br /> field effort at DDRW-Sharpe includes the specifications for on- and off-installation wells, <br /> following: respectively. <br /> • Installation and development of three 2,2,2 Right-of-entry for construction an <br /> groundwater monitoring well clusters sampling of off-post monitoring wells wi I be <br /> (Clusters 1, 2, and 3, and relocation of MW obtained after easements are acquired. <br /> Clusters 506A, B, C,D and 509A,B,C, <br /> CD); 2,3 Well Development <br /> • Installation and development of one <br /> Each monitoring well and piezometer wi be <br /> groundwater piezometer cluster; <br /> developed after well casing installation. ell <br /> • Well location surveying(new and existing development procedures will follow those <br /> [active and abandoned] wells and other outlined in the Comprehensive Field Wok Plan. <br /> landmarks); <br /> • Abandonment of 37 existing wells; <br /> S-SSWP.DOC 1 Sep bei 1996 <br />