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1 <br /> IHarding Lawson Associates <br /> has been identified by the SJCPHS/EHD as warranting remedial <br /> actions that will accelerate removal of hydrocarbon constituents. <br /> 2 . Excavation of Soil for Surface Treatment and Class III <br /> Disposal <br /> IExcavation of soil is a direct means of recovering <br /> ' released hydrocarbons and preventing their migration. Surface <br /> treatment with aeration or bioremediation could lower <br /> ' concentrations for Class III landfill disposal. The site has <br /> limited surface area available to conduct surface treatment by <br /> aeration or bioremediation. This alternative is not recommended <br /> because the excavation would need to extend laterally beneath the <br /> store with extensive disruption to business operations that would <br /> occur during excavation and treatment. <br /> ' 3 . Excavation of Soil for Class II and Class I Disposal <br /> This alternative is not recommended because disposal of <br /> ' materials at Class II and/or Class I landfills simply moves the <br /> contamination to another location. By disposing of soil at a <br /> Class I or Class II landfill , Southland could becomea <br /> p rty to a <br /> ' future landfill cleanup at the facility where the soil is taken. <br /> Also, this alternative would need to extend underneath to store <br /> ' with extensive disruption to business operations. <br /> 4 . Vacuum Extraction of Soil Vapors for Surface Treatment <br /> Vacuum induced air flow through soil will volatilize <br /> ' gasoline hydrocarbons attached to the surface of the soil <br /> particles. This alternative is cost effective for the removal of <br /> 10 <br />