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e <br /> Woodward-Clyde Ca;i sultLr ti.:; <br /> TABLE OF COWW S <br /> 1.0 INTRODUCTION.. . ...........................•......................................................................1 <br /> 1.1 Background................................................................................................. .1 <br /> 1.2 Report Content..............................................................................................2 <br /> 2.0 SCOFE OF WORK........................................................................................................3 <br /> 2.1 Soil Gas Survey.............................................................................................3 <br /> 2.2 Soil Borings..........................................r.......................................................5 <br /> 2.3 Soil Sampling...............................................................................................6 <br /> 2.4 Monitoring Wells......... .... . ..................................................................6 <br /> 2.5 Well Survey and Wator Level Elevation..r. ..................................................6 <br /> 2.6 Groundwater Flory Velocity....................... ...............................................7 <br /> 2.7 Water Sampling Procedure..........................................................................7 <br /> 3.0 ANALYTICAL RESULTS...............................................................................................9 <br /> 3.1 Soils ...... ......................................................................................................9 <br /> 3.2 Groundwater.................................................................................................9 <br /> 4.0 DISCUSSION..............................................................................................................13 <br /> 5.0 EVALUATION OF REMEDIAL ACTION ALTERNATIVES.................................................1 4 <br /> 5.1 Screening Criteria. .....................................................................................1 4 <br /> 5.1.1 Technical. ........ .... ,........................,,.. ....15 <br /> 5.1.2 Public Health and Environmental Protection...............................1 5 <br /> 5.1,3 Legal and Institutional Factors......................................................1 5 <br /> 5,1.4 Selection of Remedial Technologies...............................................1 5 <br /> 5.2 Applicable Remedial Technologies................................................................1 6 <br /> 5.2,1 Incineration...................................................................................1 6 <br /> 5.2,2 Land Treatment............................................... ..............................2 4 <br /> 5,2.3 On-Site Landfill............................................................................2 4 <br /> 5.2,4 Steam Stripping ...........................................................................24 <br /> 5.2,5 In Situ Soil Fixation......................................................................2 5 <br /> 5.2.6 Soil Washing. .................................................... ...........................2 5 <br /> 5,2.7 Off•Sile Landfilling. .....................................................................2 5 <br /> 6.0 REMEDIAL ACTION PLAN...........................................................................................26 <br /> 7.0 PREFERRED REMEDIAL ALTERNATIVE.....................................................................3 2 <br /> 8.0 RECOMMENDATIONS AND CONCLUSIONS..................................................................3 3 <br /> i <br /> us <br /> •� r <br />