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Table I <br /> Precursory Evaluation of Remedial Options <br /> Active Passive <br /> w <br /> Attribute <br /> Groundwater Air Sparging Ozone Biodegradation Natural <br /> Extraction In'ection Augmentation Biodegradation <br /> +� Projected Duration of 3 to 4 yrs 1 to 2 yrs 1 to 2 yrs 2 to 3 yrs 5 to 10 yrs <br /> Operation <br /> Projected System Moderate High High High Moderate <br /> Effectiveness <br /> Simplicity of System Moderate Low Moderate High High <br /> Site Disruption Concerns Moderate High Moderate Low Low <br /> System Obtrusiveness Moderate Moderate Moderate Low Low <br /> Public Safety Concerns Low Moderate Moderate Low Low <br /> Noise Concerns Low High Low Low Low <br /> ' Public Nuisance Concerns Low Moderate Low Low Low <br /> Aesthetic Concerns Moderate Moderate Moderate Low Low <br /> Emissions/Discharge High High Low Low Low <br /> Requirements <br /> Estimated Capital Costs $5-$10 $30-$50 $20-$30 $5-$10 0 <br /> ($1,000's) <br /> Estimated Engineering and $10-$20 $15-$25 $10-$20 $5-$10 0 <br /> Lo Construction Costs <br /> $1,000's <br /> Estimated Annual O&M and $10-$15 $25-$40 $10-$15 $15-$25 $5-$10 <br /> Monitoring Costs $1,000's <br /> '" Estimated Total Costs Over <br /> Projected Duration of $60-$90 $90-$130 $50-$80 $60-$90 $50-$100 <br /> ' Operation <br /> Lo $1,000's <br /> V <br /> Iw <br /> Lo <br /> 6r <br /> 4 <br /> JJW GEOSCIENCES Inc. <br />