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Table of Contents <br /> 1.0 INTRODUCTION.................................................................................................................................1 <br /> 2.0 PURPOSE AND SCOPE OF SERVICES..............................................................................................1 <br /> 3.0 SITE BACKGROUND AND REGULATORY STATUS............................................................................2 <br /> 4.0 CONTAMINANTS OF CONCERN AND GROUNDWATER CLEANUP STANDARDS............................3 <br /> 5.0 GROUNDWATER COMPLIANCE MONITORING................................................................................3 <br /> 5.1. Monitoring Well Installation..........................................................................................................4 <br /> 5.2. Groundwater Occurrence.............................................................................................................4 <br /> 5.3. Chemical Analytical Results.........................................................................................................5 <br /> 5.3.1. First Quarter Post-Cleanup Groundwater Sampling July 2020.......................................5 <br /> 5.3.2. Final Four Quarters Post-Cleanup Groundwater Sampling <br /> October 2020 to July 2021 ..............................................................................................5 <br /> 6.0 SUMMARY AND CONCLUSIONS.......................................................................................................5 <br /> 6.1. Soil.................................................................................................................................................5 <br /> 6.2. Groundwater.................................................................................................................................5 <br /> 6.2.1. Evaluation of Arsenic in MW-6 Groundwater...................................................................5 <br /> 6.3. Request for NFA Determination...................................................................................................6 <br /> 7.0 LIMITATIONS.....................................................................................................................................6 <br /> 8.0 REFERENCES....................................................................................................................................7 <br /> LIST OF TABLES <br /> Table 1. Summary of Groundwater Elevations and Chemical Analytical Results <br /> LIST OF FIGURES <br /> Figure 1.Vicinity Map <br /> Figure 2.Site Plan <br /> Figure 3. Site Plan and Groundwater Elevations July 9, 2020 <br /> Figure 4. Site Plan and Groundwater Elevations October 8, 2020 <br /> Figure 5.Site Plan and Groundwater Elevations January 13, 2021 <br /> Figure 6. Site Plan and Groundwater Elevations April 7, 2021 <br /> Figure 7. Site Plan and Groundwater Elevations July 13, 2021 <br /> Figure 8.Arsenic in Groundwater(MW-6): Detected Range and Distribution (2/2018 through 7/2021) <br /> APPENDICES <br /> Appendix A.Washington Department of Ecology Opinions on Remedial Actions Completed at the Former <br /> Smith Street Sawmill Site <br /> Appendix B. Exploration Logs and Field Procedures <br /> Appendix C. Chemical Analytical Data Reports <br /> Appendix D. Report Limitations and Guidelines for Use <br /> GEoENGINEER� lanuary24,2022 Pagei <br /> File No.0661-108-03 <br />