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TABLE OF CONTENTS <br /> I. SECTION I-BACKGROUND................................................................................................4 <br /> A. Site History..................................................................................................................................4 <br /> LHistorical Chemical Usage.........................................................................................................4 <br /> 2.Indications of Past Spills/Releases..............................................................................................S <br /> 3.UST and AST Locations.............................................................................................................S <br /> 4.Maintenance Shop,Chemical Storage Areas..............................................................................S <br /> S.Future Uses................................................................................................................................6 <br /> B. Topography.................................................................................................................................6 <br /> C. Geology/Hydrogeology................................................................................................................7 <br /> (.Regional Geology and Hydrogeology..........................................................................................7 <br /> 2.Vicinity and Site Near-Surface Geology and Hydrogeology........................................................8 <br /> 3.Proposal for Further Characterization of Site Geology and Hydrogeology.................................9 <br /> II. SECTION II-PRIOR INVESTIGATIONS..........................................................................10 <br /> A. Subsurface Investigations by Others......................................................................................... 10 <br /> B. Pinnacle Environmental Investigations..................................................................................... 10 <br /> III. SECTION III-FIELD INVESTIGATION...........................................................................22 <br /> A. General......................................................................................................................................22 <br /> (.Monitoring Well Locations and Rationale................................................................................22 <br /> 2.Survey Details...........................................................................................................................22 <br /> 3.Equipment Decontamination Procedures.................................................................................22 <br /> 4.Health and Safety Plan.............................................................................................................22 <br /> B. Drilling and Logging Methods..................................................................................................22 <br /> C. Monitoring Well Design............................................................................................................23 <br /> D. Well Development......................................................................................................................24 <br /> E. Soil Sampling for Chemical Analyses........................................................................................24 <br /> F. Well Sampling...........................................................................................................................25 <br /> G. Water Level Measurements......................................................................................................27 <br /> IV. SECTION IV-QA/QC PROCEDURES................................................................................28 <br /> V. SECTION V-TIME SCHEDULE FOR PROPOSED WORK.............................................29 <br />