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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration xxv <br />3.16.1 Environmental Setting 183 <br />3.16.2 Discussion 183 <br />3.17 Transportation 185 <br />3.17.1 Environmental Setting 185 <br />3.17.2 Discussion 186 <br />3.18 Tribal Cultural Resources 189 <br />3.18.1 Environmental Setting 190 <br />3.18.2 Discussion 195 <br />3.19 Utilities and Service Systems 197 <br />3.19.1 Environmental Setting 198 <br />3.19.2 Discussion 200 <br />3.20 Wildfire 202 <br />3.20.1 Environmental Setting 203 <br />3.20.2 Discussion 203 <br />3.21 Mandatory Findings of Significance 205 <br />3.21.1 Environmental Setting 206 <br />3.21.2 Discussion 206 <br />4.0 REFERENCES 214 <br /> <br />Figures <br /> <br />Figure 1: Proposed Project Location .............................................................................. 3 <br />Figure 2: Study Area ....................................................................................................... 5 <br />Figure 3. Truck-mounted Rotary Drill Rig ...................................................................... 10 <br />Figure 4. Track-mounted Rotary Drill Rig ...................................................................... 10 <br />Figure 5. Cone Penetrometer Testing Rig ..................................................................... 12 <br />Figure 6. Track-Mounted Cone Penetrometer Testing Rig ............................................ 13 <br />Figure 7. Time Domain Electromagnetic (TDEM) System Schematic ........................... 15 <br />Figure 8. Cesium Vaper Total Field Magnetometer (CVTFM) ....................................... 16 <br />Figure 9. Electrical Resistivity Tomography (ERT) ........................................................ 17 <br />Figure 10. EnviroVibe Minibuggy .................................................................................. 18 <br />Figure 11. Barge-mounted Rotary Drill Rig ................................................................... 19