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, <br /> ENGINEERING FEASIBILITY STUDY FORACTION-- ---- - <br /> CORRAL HOLLOW SANITARY LANDFILL <br /> SAN JOAQUUN COUNTY,CALIFORNIA <br /> TABLE OF CONTENTS <br /> 1.0 INTRODUCTION .....................................................................................................1 <br /> 1.1 GENERAL.....................................................................................................................1 <br /> 1.2 BACKGROUND ------..------.----..—.---.—.-------------..2 <br /> 2.0 SITE SETTING .........................................................................................................2 <br /> 2.1 PHYSIOGRAPHIC AND CLIMATIC SETTING..................................................................3 <br /> 2.1.1 Landfill Setting....................................................................................................3 <br /> 2.1.2 Climate................................................................................................................8 <br /> 2.1.3 Landfill Configurationand Improvements.........................................................3 <br /> 2.2 GEOLOGIC SETTING....................................................................................................4 <br /> 2.3 HYDRO0EOLOG|C SETTING ........................................................................................4 <br /> 2/4 WELLS WITHIN ONE MILE OFTHE SITE ......................................................................6 <br /> 2.5 NATURE AND EXTENT C]FGROUNDWATER IMPACT..................................................6 <br /> 2.5.1 Conceptual Model for the Release Area............................................................6 <br /> 2.5.2 Fate and Transport Assessment for the Release Area.......................................7 <br /> 2.6 PREVIOUS CORRECTIVE ACTIONS...............................................................................7 <br /> 3.0 MITIGATION ALTERNATIVES...................................................................................8 <br /> 3'1 POTENTIAL REMEDIAL ALTERNATIVES.......................................................................8 <br /> 3'2 DESIGN BASIS FOR SOURCE CONTROL ALTERNATIVES..............................................8 <br /> 3.2.1 Landfill Cover System.........................................................................................9 <br /> 3.3.2 Landfill Gas Control ............................................................................................9 <br /> 3.3 DESIGN PARAMETERS FOR IN-SITU TREATMENT.....................................................11 <br /> 3/4 DESIGN PARAMETERS FOR EX-SITU TREATMENT....................................................12 <br /> 3.5 PRELIMINARY SCREENING CJFALTERNATIVES..........................................................l3 <br /> 3.5'1 Source Control Alternatives .............................................................................l3 <br /> 3.5.2 In-Situ Treatment Systems...............................................................................15 <br /> 3.5.3 Ex-Situ Treatment Alternatives........................................................................17 <br /> 3'6 CORRECTIVE ACTION TECHNOLOGY SCREENING SUMMARY..................................2l <br /> 4.0 DESCRIPTION OF VIABLE REMEDIAL ALTERNATIVES.............................................. 21 <br /> 4.1 NO. 1: EXTENSION C3FTHE FINAL COVER SYSTEM ..................................................23 <br /> 4.2 N[]. 3: LANDFILL GAS EXTRACTION SYSTEM ENHANCEMENTS...............................22 <br /> 4.3 NO. 3: IN-SITU AIR SPA0G|KJ REXT0ACT|C)ydSYSTEK4--------.---28 <br /> 4.4 NO. 4: INTRINSIC REMEDIATION .............................................................................24 <br /> 4`5 GROUNDWATER EXTRACTION WITH EX-SITU TREATMENT.....................................25 <br />