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t <br /> a <br /> TABLE OF CONTENTS <br /> FA&e <br /> 1.0 INTRODUCTION...................................................................................................................1 <br /> 2.0 CLOSURE SUMMARY..........................................................................................................1 <br /> 2.1 GEOLOGIC AND HYDROGEOLOGIC SETTING........................................1 <br /> 2.1.1 GEOGRAPHY......................................................................................................1 <br /> 2.1.2 SOIL TYPES.........................................................................................................1 <br /> 2.1.3 GROUNDWATER ELEVATION AND FLOW DIRECTION.......................2 <br /> 2.1.4 GROUNDWATER BENEFICIAL USES...........................................................2 <br /> 2.2 CONSTITUENT DISTRIBUTIONS...................................................................2 <br /> 2.2.1 DISTRIBUTION IN SOIL...................................................................................2 <br /> 2.2.2 CONTAMINANT MASS REMAINING IN SOIL..........................................3 <br /> 2.2.3 DISTRIBUTION IN SOIL VAPOR....................................................................4 <br /> 2.2.4 DISTRIBUTION IN GROUNDWATER...........................................................5 <br /> 3.0 LOW RISK CASE CLOSURE................................................................................................5 <br /> 3.1 LEAK HAS BEEN STOPPED AND <br /> ONGOING SOURCES HAVE BEEN REMOVED..........................................6 <br /> 3.2 SITE IS ADEQUATELY CHARACTERIZED..................................................6 <br /> 3.3 DISSOLVED PLUME IS NOT MIGRATING..................................................6 <br /> 3.4 LITTLE OR NO GROUNDWATER IMPACT CURRENTLY <br /> EXISTS ABOVE ESTABLISHED WATER-QUALM OBJECTIVES............6 <br /> 3.5 NO WATER WELLS OR OTHER SENSITIVE <br /> RECEPTORS ARE LIKELY TO BE IMPACTED.............................................7 <br /> 3.6 SITE PRESENTS NO SIGNIFICANT RISK <br /> TO HUMAN HEALTH OR ENVIRONMENT...............................................7 <br /> 4.0 CONCLUSIONS.....................................................................................................................7 <br /> 060222(11) CONESTOGA-ROVERS&ASSOCIATES <br />