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TABLE OF CONTENTS <br />Section 1 Executive Summary ........................................................................................................1.1 <br />Section 2 Introduction .....................................................................................................................2.1 <br /> 2.1 Scope of Project ............................................................................. ..........2-1 <br /> 2.2 Background and Project Description ............................................. .......... 2-1 <br />Section 3 Field Investigation .............................................................................................. ............3.1 <br /> 3.1 General ........................................................................................... ..........3-1 <br /> 3.2 Test Borings ................................................................................... .......... 3-1 <br /> 3.2.1 Drilling Methods ................................................................ ..........3-1 <br /> 3.2.2 Logging Procedures ........................................................... .......... 3-1 <br /> 3.2.3 Packer Testing Procedures ................................................. .......... 3-2 <br /> 3.2.4 Observation We]ls .............................................................. ..........3-2 <br /> 3.3 Test Pits .......................................................................................... .......... 3-2 <br /> 3.3.1 Excavation Methods ........................................................... .......... 3-2 <br /> 3.3.2 Logging Procedures ........................................................... .......... 3-2 <br />Section 4 Subsurface Conditions ....................................................................................... ............4.1 <br /> 4.1 General Geology ............................................................................ ..........4-1 <br /> 4.2 Subsurface Conditions ................................................................... ..........4-1 <br /> 4.3 Top Soil .......................................................................................... ..........4-1 <br /> 4.4 Alluvium ........................................................................................ ..........4-1 <br /> 4.5 Bedrock .......................................................................................... ..........4-1 <br /> 4.6 Groundwater .................................................................................. .......... 4-2 <br />Section 5 Laboratory and Field Testing ............................................................................. ............5.1 <br /> 5.1 General ........................................................................................... ..........5-1 <br /> 5.2 Topsoil and Alluvial Soils ............................................................. .......... 5-1 <br /> 5.3 Foundation Bedrock ....................................................................... .......... 5-1 <br /> 5.3.1 Index Testing ..................................................................... .......... 5-1 <br /> 5.3.2 Strength Testing ................................................................. .......... 5-1 <br /> 5.3.3 Hydraulic Conductivity ...................................................... .......... 5-2 <br /> 5.4 Groundwater and Pond Water Chemistry ...................................... .......... 5-2 <br />Section 6 Soil-Bentonite Cutoff Wall .................................................................................. ............6.1 <br /> 6.1 Cutoff Wall Design and Profile ..................................................... .......... 6-1 <br /> 6.2 Mix Design ..................................................................................... .......... 6-1 <br /> 6.2.1 Laboratory Testing ............................................................. .......... 6-1 <br /> 6.3 Technical Specifications for Soil-Bentonite Cutoff Wall .............. .......... 6-3 <br /> 6.4 Construction Quality Control/Construction Quality Assurance .... .......... 6-3 <br />*N:IPROJECTS~2223B240 PLATTE SAND GRAVELISUB 00\12.0 WORD PROC\PLATTE SANDB GRAVEL GEOTECHNICAL DESIGN REPORT 4.O.DOC115~NOVA511 I <br />VfY./ _ _ _ _ _ _ <br />