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Vapor Intrusion Assessment Work Plan Project Numner 60481767 <br /> Table of Contents <br /> 1. Introduction......................................................................................... 1 <br /> 1.1 Site Location................................................................................................ 1 <br /> 1.2 Purpose and Scope of Work Plan.................................................................... 1 <br /> 1.3 Site Background........................................................................................... 1 <br /> 1.4 Remedial Action Summary............................................................................ 2 <br /> 1.5 Site Contamination....................................................................................... 4 <br /> 1.5.1 Soil Vapor Contamination...................................................................................4 <br /> 1.5.2 Groundwater Contamination...............................................................................4 <br /> 2. Investigation Rationale .........................................................................4 <br /> 3. Physical Setting ................................................................................... 5 <br /> 3.1 Topography, Climate, and Setting................................................................... 5 <br /> 3.2 Geology and Hydrology................................................................................ 5 <br /> 4. Sampling and Analysis Plan .................................................................. 5 <br /> 4.1 Permits........................................................................................................ 5 <br /> 4.2 Utility Clearance .......................................................................................... 6 <br /> 4.3 Sub-Slab Soil Gas Sampling.......................................................................... 6 <br /> 4.3.1 Field Activities.....................................................................................................6 <br /> 4.3.2 Laboratory Analysis.............................................................................................7 <br /> 4.4 Indoor and Outdoor Air Sampling .................................................................. 7 <br /> 4.4.1 Field Activities.....................................................................................................8 <br /> 4.4.2 Laboratory Analysis.............................................................................................8 <br /> 4.5 Soil Gas Sampling........................................................................................ 8 <br /> 4.5.1 Field Activities.....................................................................................................9 <br /> 4.5.2 Borehole Abandonment..................................................................................... 10 <br /> 4.5.3 Laboratory Analysis........................................................................................... 10 <br /> 4.6 Decontamination Procedures ....................................................................... 10 <br /> 5. Data Acquisition and Quality Assurance/Quality Control ........................ 11 <br /> 5.1 Project Design and Rationale........................................................................11 <br /> 5.2 Statistical Parameter Indicators.....................................................................11 <br /> 5.2.1 Precision............................................................................................................ 11 <br /> 5.2.2 Accuracy............................................................................................................ 11 <br /> 5.2.3 Representativeness for Standard Reference Material........................................ 11 <br /> 5.2.4 Comparability.................................................................................................... 11 <br /> 5.2.5 Completeness..................................................................................................... 12 <br /> 5.3 Quality Control Samples and Procedures ...................................................... 12 <br /> 5.3.1 QC Checks......................................................................................................... 12 <br /> 5.3.2 Field Replicates (Or Duplicates)....................................................................... 12 <br /> 5.3.3 Method Calibration............................................................................................ 12 <br /> 5.3.4 Laboratory Method Blanks................................................................................ 12 <br /> 5.3.5 Laboratory Control Samples.............................................................................. 13 <br /> 5.3.6 Surrogate Spikes................................................................................................ 13 <br /> 5.3.7 Laboratory Failures ........................................................................................... 13 <br />