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+! i <br /> Contents <br /> Main Stone Property — Effluent Storage and Disposal Site <br /> Hydrogeologic Investigation Workplan <br /> INTRODUCTION AND BACKGROUND................................................................................1-1 <br /> 1.1 Introduction................................................................................................. 1-1 <br /> 1.2 Relevant supporting Documentation........................................................... 1-1 <br /> 1.3 Site Soils, Geology, and Hydrogeology...................................................... 1-2 <br /> 1.3.1 Geology....................................................................................................... 1-2 <br /> 1.3.2 Shallow Soils Coverage.............................................................................. 1-2 <br /> 1.3.3 Shallow Groundwater Occurrence and Quality.......................................... 1-3 <br /> PROPOSED HYDROGEOLOGIC INVESTIGATION..............................................................2-1 <br /> 2.1 Purpose of Hydrogeologic Investigation....................................................2-1 <br /> 2.2 Groundwater and San Joaquin River Monitoring.......................................2-1 <br /> 2.2.1 Groundwater and San Joaquin River Elevation Monitoring.......................2-1 <br /> 2.2.2 Groundwater and San Joaquin River Water Quality Monitoring...............2-1 <br /> 2.3 Field and Laboratory Testing of Hydrogeologic Parameters......................2-3 <br /> 2.3.1 Soil Physical and Mineralogical Testing....................................................2-3 <br /> 2.3.2 Guelph Permeameter Testing......................................................................2-3 <br /> 2.3.3 Double Ring Infiltrometer Testing..............................................................2-3 <br /> 2.3.4 Limited Duration Pumping Tests................................................................2-4 <br /> 2.4 Groundwater Characterization and Hydrogeologic Evaluation Report......2-4 <br /> MONITORINGNETWORK.................................................................................................3-1 <br /> 3.1 Monitoring Well Locations and Rationale..................................................3-1 <br /> 3.2 Equipment Decontamination Procedures....................................................3-1 <br /> 3.3 Health and Safety Plan................................................................................3-1 <br /> 3.3.1 Personal Protective Equipment...................................................................3-1 <br /> 3.3.2 Emergency Procedures................................................................................3-1 <br /> 3.4 Regulatory Permits......................................................................................3-2 <br /> 3.5 Monitoring Well Design.............................................................................3-2 <br /> 3.6 Well Development......................................................................................3-3 <br /> 3.6 Well Disinfection........................................................................................3-4 <br /> 3.8 Surveying....................................................................................................3-4 <br /> SOIL AND WATER SAMPLING PLAN................................................................................4-1 <br /> 4.1 Soil Sampling..............................................................................................4-1 <br /> 4.2 Well Water Sampling..................................................................................4-1 <br /> 4.2.1 Water Level Measurements........................................................................4-1 <br /> 4.2.2 Purging........................................................................................................4-1 <br /> 4.2.3 Sample Collection.......................................................................................4-1 <br /> 4.2.4 Quality Assurance/Quality Control.............................................................4-2 <br /> May 2006 Main Stone Property <br /> i Effluent Storage and Disposal Site Hydrogeologic Investigation Workplan <br />