WORK PLANS_PART 2 FILE 1 - Laserfiche WebLink

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GEOMATRIX TABLE OF CONTENTS Page 1.0 INTRODUCTION.............................................................................................................1 2.0 BACKGROUND...............................................................................................................1 2.1 LATHROP FACILITY OPERATIONS...........................................................................1 2.2 GROUNDWATER MONITORING................................................................................2 3.0 SITE HYDROLOGY ........................................................................................................3 3.1 SITE LITHOLOGY ....................................................................................................3 3.2 GROUNDWATER OCCURRENCE...............................................................................3 4.0 WATER QUALITY PROTECTION STANDARDS.......................................................4 5.0 CORRECTIVE ACTION WORK PLAN.........................................................................5 5.1 EVALUATION MONITORING WORK PLAN...............................................................6 5.1.1 Exploratory Borings ..................................................................................8 5.1.2 Monitoring Well Sampling........................................................................9 5.1.3 Supply Well Sampling.............................................................................10 5.1.4 Pumping Test...........................................................................................10 5.1.5 Nature and Extent of Release..................................................................10 5.2 ENGINEERING FEASIBILITY STUDY.......................................................................10 5.3 CORRECTIVE ACTION PROGRAM ..........................................................................11 5.4 DETECTION MONITORING PROGRAM....................................................................11 6.0 PRELIMINARY SCHEDULE........................................................................................12 7.0 REFERENCES................................................................................................................13 TABLE Table 1 Well Construction Data Table 2 Revised Groundwater Concentration Limits Table 3 Sampling and Analysis Plan FIGURES Figure 1 Site Location Map Figure 2 Potentiometric Surface Map Figure 3 Shallow Zone Monitoring Wells and Proposed Exploratory Borings APPENDIXES Appendix A Quality Assurance Project Plan I:\6000s\6741.0001Archive\6741.13.doc