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SAP/QAPP Addendum <br /> Lodi-125 N Stockton <br /> Final <br /> March 24,2025 <br /> TABLE OF CONTENTS <br /> APPROVALPAGE.................................................................................................................................I <br /> TABLEOF CONTENTS ....................................................................................................................II <br /> DISTRIBUTIONLIST.......................................................................................................................VI <br /> ACRONYMS AND ABBREVIATIONS...........................................................................................VII <br /> 1.0 INTRODUCTION....................................................................................................................1 <br /> 1.1 Site History.............................................................................................................................................2 <br /> 1.2 Site Name...............................................................................................................................................2 <br /> 1.3 Site Location and Description............................................................................................................2 <br /> 1.4 Responsible Agency..............................................................................................................................3 <br /> 1.5 Project Organization............................................................................................................................3 <br /> 2.0 BACKGROUND.......................................................................................................................6 <br /> 2.1 Site Description.....................................................................................................................................6 <br /> 2.2 Operational History..............................................................................................................................6 <br /> 2.3 Previous Investigations........................................................................................................................6 <br /> 2.4 Geological Information........................................................................................................................7 <br /> 2.5 Potential Analytes of Concern and Exposure Routes.....................................................................8 <br /> 3.0 PROJECT DATA QUALITY OBJECTIVES...........................................................................9 <br /> 3.1 Project Tasks and Problem Definition..............................................................................................9 <br /> 3.1.1 Geophysical Suroey.....................................................................................................................9 <br /> 3.1.2 Hazardous Building Materials Sampling....................................................................................9 <br /> 3.1.3 Soil Sampling........................................................................................................................... 10 <br /> 3.1.4 Soil Gas Sampling................................................................................................................... 11 <br /> 3.1.5 Ambient Air Sampling............................................................................................................ 11 <br /> 3.2 Data Quality Objectives.....................................................................................................................11 <br /> 3.3 Measurement Quality Objectives.....................................................................................................13 <br /> 3.4 Data Review and Validation..............................................................................................................13 <br /> 3.5 Data Management...............................................................................................................................14 <br /> 3.6 Assessment Oversight........................................................................................................................14 <br /> 4.0 SAMPLING RATIONALE..................................................................................................... 39 <br /> 4.1 Geophysical Survey.............................................................................................................................39 <br /> 4.2 Hazardous Building Materials Survey..............................................................................................39 <br /> 4.3 Soil Sampling.......................................................................................................................................40 <br /> 4.3.1 Historical MGP Soil Sampling................................................................................................40 <br /> ll <br />