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Work plan for Additiona/Groundwater Assessment <br /> Former Chevron Service Station 94054 <br /> March 19.2010 <br /> TABLE OF CONTENTS <br /> 1.0 INTRODUCTION ...................................................................................................................1 <br /> 2.0 BACKGROUND INFORMATION.........................................................._...............................1 <br /> 2.1 Site History..............................................................................................................1 <br /> 2.2 Regional Geology/Hydrogeology............................................................................2 <br /> 2.3 Site Geology...........................................................................................................2 <br /> 3.0 PROPOSED SCOPE OF WORK .............................................. <br /> 3.1 Site Specific E-HASP..............................................................................................3 <br /> 3.2 Permitting................................................................................................................3 <br /> 3.3 Underground Utility Locating...................................................................................3 <br /> 3.4 Quality Assurance/Quality Control Plan..................................................................3 <br /> 3.5 Soil Borings.............................................................................................................4 <br /> 3.5.1 Soil Sampling and Screening..................................................................................4 <br /> 3.6 Monitoring Well Installation.....................................................................................5 <br /> 3.6.1 B Zone Monitoring Wells.................................................................... 5 <br /> 3. <br /> 6.2 Monitoring Well Development and Sampling...................... <br /> 3.6.3 Surveying................................................................................................................5 <br /> 3.7 Waste Disposal....................... 6 <br /> 3.8 interim remedial actions..........................................................................................6 <br /> 4.0 REPORTING .........................................................................................................................6 <br /> 5.0 SCHEDULE....,.......................................................................................................................7 <br /> LIST OF FIGURES <br /> Figure 1 Site Location Map <br /> Figure 2 Site Plan with Proposed Monitoring Well Locations <br /> Figure 3 Typical Monitoring Well Construction Diagram — B Zone Well <br /> LIST OF TABLES <br /> Table 1 Historical Analytical Soil Data <br /> Table 2 Soil Boring and Well Construction Details <br /> LIST OF ATTACHMENTS <br /> Attachment A Site History and Previous Investigations <br /> Attachment B Historical Groundwater Monitoring &Analytical Data <br /> Attachment C Monitoring Well Logs <br /> Attachment D Groundwater Flow Direction Rose Diagram <br /> ',\CA5FP\DataV+Aproject\ENV\CHEVRCN\94054\6 DeliverableslWork Plans\20100emplWork Plan for Site Assessrnent"4621010950.doc i <br />