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Table of Contents <br /> 1. Introduction................................................................................................................................... 1 <br /> 2. Site Background........................................................................................................................... 1 <br /> 2.1 Site Description.................................................................................................................. 1 <br /> 2.2 Regional and Site Geology................................................................................................ 1 <br /> 2.3 Regional and Site Hydrogeology ....................................................................................... 2 <br /> 2.4 Environmental History........ ...............................................................................................2 <br /> 2.4.1 Previous Environmental Assessment................................................................................ 2 <br /> 2.4.2 Previous Environmental Remediation................................................................................ 2 <br /> 3. A Zone Historical Data Review.................................................................................................... 3 <br /> 4. 1,2-DCA Groundwater Analytical Data......................................................................................... 3 <br /> 5. Proposed Scope of Work............................................................................................................. 3 <br /> 5.1 Permitting and Access.......................................................................................................4 <br /> 5.2 Underground Utility Clearance...........................................................................................4 <br /> 5.3 Health and Safety Plan ......................................................................................................4 <br /> 5.4 Monitoring Well Borehole Advancement............................................................................4 <br /> 5.5 Monitoring Well Construction.............................................................................................4 <br /> 5.6 Soil Sampling .....................................................................................................................4 <br /> 5.7 Laboratory Analysis............................................................................................................ 5 <br /> 5.8 Decontamination ................................................................................................................ 5 <br /> 5.9 Investigation Derived Waste Disposal ............................................................................... 5 <br /> 5.10 Monitoring Well Development and Survey.........................................................................5 <br /> 5.11 Groundwater Sampling ...................................................................................................... 5 <br /> 5.12 Water Supply Well Survey.................................................................................................6 <br /> 5.13 Schedule and Reporting ....................................................................................................6 <br /> GHD I Well Installation Work Plan Addendum 111193145(5)1 Page ii <br />