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ii DRAFT for review purposes only. Use of contents on this sheet is subject to the limitations specified at the end of this document. Table of Contents Executive Summary .................................................................................................................................... vii 1. Introduction .........................................................................................................................................1-1 1.1 Baseline Water Investigation Objectives ...............................................................................1-2 1.2 Baseline Water Investigation Scope of Work ........................................................................1-2 2. Background .........................................................................................................................................2-3 2.1 Major Land Features that Influence Water Quality and Quantity ........................................2-3 3. Data Collection ...................................................................................................................................3-1 3.1 Site Geology and Hydrogeology..............................................................................................3-1 3.2 Monitoring Well Installation ...................................................................................................3-3 3.3 Groundwater Elevations .........................................................................................................3-6 3.4 Slug Test ..................................................................................................................................3-6 3.4.1 Data Usability and Corrections ................................................................................3-6 3.4.2 Analysis Methods .....................................................................................................3-7 3.4.3 Slug Test Analysis Methods .....................................................................................3-7 3.5 Groundwater Modeling ...........................................................................................................3-8 3.6 Surface Water Reconnaissance.............................................................................................3-8 3.7 Surface Water Flume Installation ....................................................................................... 3-12 4. Water Quality Monitoring ...................................................................................................................4-1 4.1 Baseline Monitoring Program ................................................................................................4-1 4.2 Groundwater Well Purging and Field Parameters.................................................................4-2 4.3 Surface Water Sampling Methods .........................................................................................4-4 4.4 Water Quality Sample Collection ...........................................................................................4-5 4.4.1 Filtration and Preservation ......................................................................................4-5 4.4.2 Parameters ...............................................................................................................4-5 4.5 Quality Assurance/Quality Control and Data Validation .......................................................4-6 4.5.1 Duplicates .................................................................................................................4-6 4.5.2 Equipment Blanks ....................................................................................................4-6 4.5.3 Data Validation and Data Review Procedures ........................................................4-7 5. Presentation of Results ......................................................................................................................5-8 5.1 Groundwater and Surface Water Quality Field Measurements ...........................................5-8 5.2 Groundwater Level Assessment ............................................................................................5-8 5.3 Flow Monitoring Results .........................................................................................................5-9 5.4 Water Quality Measurements ............................................................................................. 5-12 5.4.1 Data Validation ...................................................................................................... 5-12 5.4.2 Summary of Analytical Results ............................................................................. 5-13 6. Interpretation of Results ....................................................................................................................6-1