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i <br /> Farmington Groundwater Recharge Program STC Work Plan—Hammer Site <br /> TABLE OF CONTENTS <br /> LIST OF APPENDICES..............................................................................................................ii <br /> LIST OF FIGURES.....................................................................................................................iii <br /> LISTOF TABLES.......................................................................................................................iv <br /> LIST OF ACRONYMS................................................................................................................v <br /> 1. INTRODUCTION...............................................................................................................1-1 <br /> 1.1.BACKGROUND INFORMATION ............................................................................................. 1-1 <br /> 1.2.WORK PLAN OVERVIEW..................................................................................................... 1-1 <br /> 1.3.WORK PLAN APPROACH..................................................................................................... 1-3 <br /> 1.4.SITE DESCRIPTION .............................................................................................................. 1-3 <br /> 2. METHODOLOGY..............................................................................................................2-1 <br /> 2.1.INITIAL FIELD RECONNAISSANCE........................................................................................2-1 <br /> 2.1.1. Conduct Environmental Site Assessment................................................................2-1 <br /> 2.1.2. Conduct Reconnaissance Level Biological and Cultural Assessments...................2-2 <br /> 2.1.3. Acquire Necessary Permits......................................................................................2-2 <br /> 2.1.4. Determine Borehole Locations................................................................................2-2 <br /> 2.1.5. Mark Locations of Buried Utilities..........................................................................2-2 <br /> 2.1.6. Identify Potential Water Sources.............................................................................2-2 <br /> 2.2.FIELD DATA COLLECTION#I -SITE CHARACTERIZATION .................................................2-5 <br /> 2.2.1. Borehole Drilling and Lithologic Logging..............................................................2-5 <br /> 2.2.2. Grain Size Analysis .................................................................................................2-5 <br /> 2.2.3. Borehole Falling Head Tests....................................................................................2-5 <br /> 2.2.4. Monitoring Well Drilling and Construction ............................................................2-6 <br /> 2.2.5. Survey Monitoring Well and Borehole Locations...................................................2-6 <br /> 2.2.6. Water Quality Sampling ..........................................................................................2-6 <br /> 2.2.7. Groundwater Elevation Monitoring.........................................................................2-6 <br /> 2.3.DATA ANALYSIS#1 ............................................................................................................2-8 <br /> 2.4.PILOT SCALE TEST CONSTRUCTION ACTIVITIES .................................................................2-9 <br /> 2.5.FIELD DATA COLLECTION#2-PILOT RECHARGE TEST......................................................2-9 <br /> 2.5.1. Groundwater Elevation Monitoring.......................................................................2-14 <br /> 2.5.2. Source Water Monitoring ......................................................................................2-14 <br /> 2.5.3. Evaporation and Precipitation................................................................................2-14 <br /> 2.5.4. Pond Height...........................................................................................................2-15 <br /> 2.5.5. Inflow Rate.............................................................................................................2-15 <br /> 2.5.6. Site Maintenance and Monitoring..........................................................................2-15 <br /> 3. REPORTING.......................................................................................................................3-1 <br /> 4. REFERENCES....................................................................................................................4-1 <br /> MWH i July 2004 <br />