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3rd Interim Action Construction Report <br />Kimberly-Clark Upland Site <br /> 0121049.080.084 <br />July 30, 2024 iii landauinc.com <br />TABLE OF CONTENTS <br />Page <br />1.0 Introduction ................................................................................................................................... 1-1 <br />2.0 Implementation of the Interim Action ........................................................................................... 2-1 <br />2.1 Ecology Coordination and Permitting .................................................................................... 2-1 <br />2.2 Site Grading ............................................................................................................................ 2-2 <br />2.2.1 Preload and Grading ............................................................................................ 2-2 <br />2.2.2 Import Fill Evaluations ......................................................................................... 2-2 <br />2.2.2.1 South Terminal Stockpile ......................................................................... 2-3 <br />2.2.2.2 Getchell Pit #15415 ................................................................................. 2-3 <br />2.2.2.3 Cadman Pit D345 (a) ................................................................................ 2-3 <br />2.2.2.4 Cadman Pit D345 (b) ................................................................................ 2-3 <br />2.2.2.5 Mandan Pit (a) ......................................................................................... 2-4 <br />2.2.2.6 Mandan Pit (b) ......................................................................................... 2-4 <br />2.2.2.7 Other Materials ....................................................................................... 2-4 <br />2.2.3 Abandoned Pipe Decommissioning ...................................................................... 2-4 <br />2.3 Cap Construction .................................................................................................................... 2-5 <br />2.4 Utility Installation ................................................................................................................... 2-5 <br />2.5 Outfall Reconstruction ........................................................................................................... 2-6 <br />2.6 Soil and Groundwater Management ...................................................................................... 2-6 <br />2.6.1 Management of Unsuitable Excavated Soils......................................................... 2-7 <br />2.6.1.1 Potentially Contaminated Soil .................................................................. 2-8 <br />2.6.1.2 Geotechnically Unsuitable Soil ................................................................. 2-8 <br />2.6.1.3 Concrete and Historical Foundations ....................................................... 2-8 <br />2.6.1.4 Wood Chips ............................................................................................. 2-9 <br />2.6.2 Management of Groundwater ............................................................................. 2-9 <br />2.6.2.1 Monitoring Well Decommissioning .......................................................... 2-9 <br />2.7 Security Fencing ................................................................................................................... 2-10 <br />3.0 Cultural Resources ......................................................................................................................... 3-1 <br />4.0 Compliance Monitoring ................................................................................................................. 4-1 <br />4.1 Protection Monitoring ............................................................................................................ 4-1 <br />4.1.1 Protection of Human Health ................................................................................ 4-1 <br />4.1.2 Protection of the Environment ............................................................................ 4-1 <br />4.2 Performance Monitoring ........................................................................................................ 4-2 <br />4.3 Confirmation Monitoring ....................................................................................................... 4-2 <br />5.0 Summary ........................................................................................................................................ 5-1 <br />6.0 Use of This Report .......................................................................................................................... 6-1 <br />7.0 References ..................................................................................................................................... 7-1