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Site Investigation Work Plan <br />Former SAN JOAQUIN COGENERATION <br />17200 Murphy Parkway, Lathrop, San Joaquin County, California <br />(APN 198-120-05) <br /> <br />TABLE OF CONTENTS <br /> <br /> <br />FIGURES <br /> <br />Figure 1 - Location Map <br />Figure 2 – Vicinity Map <br />Figure 3 - Site Plan <br />Figure 4 - Site Plan: Trenching Locations <br />Figure 5 – Proposed Boring Locations: Area of Concern 2 <br />Figure 6 - PCBs in Soil and Waste: Area of Concern 1 <br />Figure 7 - Dioxins in Soil and Waste: Area of Concern 1 <br />Figure 8 – Cross Section A-A’: Area of Concern 1 <br />Figure 9 – Cross Section B-B’: Area of Concern 1 <br />Figure 10 – Cross Section C-C’: Area of Concern 1 <br />Figure 11 – Cross Section D-D’: Area of Concern 1 <br />Figure 12 - PCBs in Soil and Waste – Surface: Area of Concern 2 <br />Figure 13 - PCBs in Soil and Waste – 3 Feet: Area of Concern 2 <br />Figure 14 - PCBs in Soil and Waste – 5 Feet: Area of Concern 2 <br />Figure 15 - PCBs in Soil and Waste – 7 Feet: Area of Concern 2 <br />Figure 16 - PCBs in Soil and Waste – 10-15 Feet: Area of Concern 2 <br />Figure 17 - Dioxins in Soil and Waste: Area of Concern 2 <br />Figure 18 –TPH-d in Soil and Waste: Area of Concern 2 <br />Figure 19 – Cross Section A-A’: Area of Concern 2 <br />Figure 20 – Cross Section B-B’: Area of Concern 2 <br />Figure 21 – Cross Section C-C’: Area of Concern 2 <br />Figure 22 – Cross Section D-D’: Area of Concern 2 <br />Figure 23 – Cross Section E-E’’: Area of Concern 2 <br />Figure 24 – Contaminant Results in Groundwater: Area of Concern 2 <br />Figure 25 – Groundwater Elevations – April 2021 <br />