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Human Health Risk Assessment <br /> _ Former Mobil Oil Bulk Plant 04-343 <br /> 500 East Grant Line Road <br /> Tracy, California <br /> SUMMARY OF POTENTIAL REMEDIATION TECHNOLOGIES <br /> Hydrocarbon Phase/ Remedial Technology Advantages Disadvantages <br /> Hydrocarbon-Affected Medium <br /> Dissolved-Phase Hydrocarbons Pump-and-Treat Proven technology. High TDS and metals may inhibit <br /> (DPH) Easy to install. hydrocarbon adsorption on carbon. <br /> Effective technology for volatile <br /> In Situ Vapor Extraction hydrocarbon removal. Limited Less successful for low permeability <br /> effectiveness in removing less soils. <br /> volatile hydrocarbon constituents <br /> Hydrocarbon-Affected Soil (e.g., diesel range hydrocarbons). <br /> Commonlyused for shallow <br /> Excavation and Disposal contamination in soil. Volume of soil excavated. <br /> Rapid method to obtain site Owner retains liability. <br /> closure. <br /> Commonly used for shallow <br /> Excavation and Treatment contamination in soil. Volume of soil excavated. <br /> Rapid method to obtain site <br /> closure. <br /> Produces harmless byproducts. <br /> In Situ Bioremediation Applicable to a wide range of May cause hydrocarbon migration. <br /> contaminants. <br /> Comprehensive Remediation <br /> Risk Assessment/Passive Indefinite monitoring requirements. <br /> Remediation and Reduction in long-term liability. <br /> Ground Water Monitoring <br /> 30-0136-11 <br /> lir..:.. . <br />