Laserfiche WebLink
Geosyntec <br /> consultants <br /> TABLE OF CONTENTS <br /> 1. INTRODUCTION....................................................................................................................1 <br /> 1.1 Regulatory Setting...........................................................................................................1 <br /> 1.2 Work Plan Objectives......................................................................................................2 <br /> 1.3 Document Organization ..................................................................................................2 <br /> 2. BACKGROUND......................................................................................................................3 <br /> 2.1 Site Description and Historical Site Use.........................................................................3 <br /> 2.2 Site Geology and Hydrogeology.....................................................................................3 <br /> 2.3 Summary of Previous Investigations...............................................................................3 <br /> 3. SCOPE OF WORK...................................................................................................................5 <br /> 3.1 Rationale and Approach..................................................................................................5 <br /> 3.2 Pre-Field Activities..........................................................................................................6 <br /> 3.2.1 Health and Safety Plan........................................................................................6 <br /> 3.2.2 Permitting and Access.........................................................................................6 <br /> 3.2.3 Utility Survey......................................................................................................7 <br /> 3.3 Off-Site Investigation Activities .....................................................................................7 <br /> 3.3.1 Soil Vapor Probe Installation..............................................................................7 <br /> 3.3.2 Soil Vapor Sampling...........................................................................................8 <br /> 3.3.3 Soil Vapor Probe Decommissioning...................................................................8 <br /> 3.3.4 Grab Groundwater Sampling...............................................................................8 <br /> 3.4 On-Site Investigation Activities......................................................................................8 <br /> 3.4.1 Indoor Air Sampling............................................................................................8 <br /> 3.4.2 Sub-Slab Probe Installation and Sampling..........................................................9 <br /> 3.5 Quality Assurance and Quality Control ..........................................................................9 <br /> 3.5.1 Field Quality Assurance Measures......................................................................9 <br /> 3.5.2 Laboratory Quality Control Samples ................................................................10 <br /> 3.5.3 Data Verification and Validation ......................................................................10 <br /> 4. REPORTING AND SCHEDULE ..........................................................................................12 <br /> 5. REFERENCES .......................................................................................................................13 <br /> ii September 2025 <br />