Laserfiche WebLink
Second Semi-Annual Groundwater Monitoring Report - Third Quarter 2017 <br />Former Chevron Service Station No. 94054 <br />December 12, 2017 <br />TABLE OF CONTENTS <br />1.0 INTRODUCTION 1 <br />2.0 SITE INFORMATION 2 <br />3.0 GROUNDWATER MONITORING AND SAMPLING 2 <br />3.1 Work Performed 2 <br />3.2 Monitoring and Sampling Procedures 2 <br />3.3 Waste Disposal 2 <br />4.0 MONITORING AND SAMPLING DATA AND RESULTS 3 <br />4.1 Groundwater Monitoring Data Analysis 3 <br />4.2 Groundwater Sample Analysis 3 <br />4.3 Quality Assurance / Quality Control 3 <br />5.0 DISCUSSION AND RECOMMENDATIONS 4 <br />5.1 Discussion 4 <br />5.1.1 Groundwater Sampling Results 4 <br />5.1 .2 Trends 5 <br />5.1.3 Plume Stability 5 <br />5.2 Recommendations 5 <br />6.0 LIMITATIONS 6 <br />LIST OF FIGURES <br />Figure 1 Site Location Map <br />Figure 2 Site Map <br />Figure 3 Groundwater Elevation Contour Map - A Zone Third Quarter 201 7 <br />Figure 4 Groundwater Elevation Contour Map - B Zone Third Quarter 2017 <br />Figure 5 Groundwater Elevation Contour Map - C Zone Third Quarter 2017 <br />Figure 6 Groundwater Elevation Contour Map - D Zone Third Quarter 2017 <br />Figure 7 TPH-GRO, Benzene, and MTBE Concentration Map - A Zone Third Quarter 2017 <br />Figure 8 TPH-GRO, Benzene, and MTBE Concentration Map - B Zone Third Quarter 2017 <br />Figure 9 TPH-GRO, Benzene, and MTBE Concentration Map - C Zone Third Quarter 2017 <br />Figure 10 TPH-GRO, Benzene, and MTBE Concentration Map - D Zone Third Quarter 201 7 <br />LIST OF TABLES <br />Table 1 Current Groundwater Monitoring & Analytical Data <br />Table 2 Historical Groundwater Monitoring & Analytical Data <br />Table 3 Soil Boring and Well Construction Details <br />LIST OF APPENDICIES <br />Appendix A Site History and Previous Investigations <br />Appendix B Gettler-Ryan's Second Semi-Annual Event of September 25 & 26, 2017 <br />Appendix C Eurofins Laboratory Analytical Results and Stantec Lab Validation Form <br />CO Stantec