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.3MANENT MONITORING WELL <br /> REPLACEMENT WORKPLAN <br /> OCCIDENTAL CHEMICAL CORPORATION <br /> GROUNDWATER REMEDIAL PROGRAM <br /> LATHROP, CALIFORNIA <br /> TABLE OF CONTENTS <br /> PAGE <br /> 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0 SITE BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 2.1 Site History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 2.2 Site Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 2.3 Description of the Monitoring Wells to be Replaced . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 3.0 PERMANENT MONITORING WELL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 3.1 Well Installation 5 <br /> 3.2 Well Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 3.3 Well Installation Soil Cutting Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 3.4 Well Surveying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 4.0 PERMANENT MONITORING WELL VERIFICATION <br /> SAMPLING AND WELL ABANDONMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 5.0 REPORTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> TABLES <br /> Table 1 Existing Permanent Monitoring Well Construction Details <br /> LIST OF FIGURES <br /> Figure 1 Site Location Map of Lathrop Site <br /> Figure 2 Well Location Map of Lathrop Site <br /> Figure 3 Permanent Monitoring Well Location Map <br /> APPENDICES <br /> Appendix A Well Installation Reports <br /> i <br />