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Site Investigation Report — Trench 29 Area <br />FORMER PILKINGTON NORTH AMERICA — LATHROP FACILITY <br />500 East Louise Avenue, Lathrop, California <br />TABLE OF CONTENTS <br />SECTION PAGE <br />1.0. INTRODUCTION...................................................................................................1 <br />2.0. BACKGROUND AND SITE INFORMATION........................................................1 <br />3.0. SOIL PROBE BORING ADVANCEMENT............................................................ 2 <br />3.1. SOIL SAMPLE COLLECTION AND ANALYSES ............................................... 3 <br />3.2. BORING ABANDONMENT................................................................................ 4 <br />3.3. EQUIPMENT DECONTAMINATION AND WASTE MANAGEMENT.................4 <br />4.0. FINDINGS............................................................................................................. 4 <br />5.0. CONCLUSIONS....................................................................................................6 <br />6.0. RECOMMENDATIONS.........................................................................................7 <br />7.0. LIMITATIONS.......................................................................................................7 <br />FIGURES <br />Figure 1 — Location Map <br />Figure 2 — Site Plan: T-29 Soil Boring Locations <br />Figure 3 — Historical Site Plan: Trench Locations and Dimensions <br />TABLES <br />Table 1 — Analytical Results of Soil Samples: PCBs <br />Table 2 — Analytical Results of Soil Samples: SVOCs and PAHs <br />Table 3 — Analytical Results of Soil Samples: TTLC Metals <br />APPENDICES <br />Appendix A <br />— Central Valley Regional Water Quality Control Board Approval Letter <br />Appendix B <br />— Investigation Trenching Field Logs <br />Appendix C <br />— Site Photographs <br />Appendix D <br />— San Joaquin County Drilling Permit <br />Appendix E — Boring Logs <br />Appendix F — Analytical Lab Report <br />