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IFeaszbdety Study Report <br /> • 1140 W Hammer Lane, Stockton, CA <br /> migration due to percolation of surface water and/or vapor-phased migration in relatively permeable <br />' sods Dissolved contaminants are primarily transported by groundwater flow Contaminant <br /> concentrations are generally reduced during transport within the saturated zone by the effects of <br /> dilution, dispersion, and attenuation <br /> 6.0 POTENTIAL REMEDIATION ALTERNATIVES <br /> Remedial action objectives are medium-specific goals for protecting human health and the <br /> environment Developing remedial action objectives involves identifying rnedia of concern and <br />' contamination characteristics, evaluating exposure pathways and contaminant migration and <br /> determining potential receptor points The remedial action objectives for this project are to prevent <br />' human exposure to the contaminants of concern at levels that may pose a significant health risk, to <br /> prevent ecological damage, to minimize the potential for continued groundwater degradation, and <br /> to comply with all Applicable and Relevant or Appropriate Requirements (ARARs) <br /> General response actions are those site-specific remedial actions, in general terms that will satisfy <br /> the remedial action objectives General response actions are media-specific and can be specific for <br /> each remedial action identified Soil remediation alternatives were not considered since all residual <br /> contarrunation remains witlun the saturated zone Table 9 presents a summary of potential remedial <br /> actions considered for the site Only the general response alternatives for groundwater contamination <br /> at the site are addressed in this section <br /> ® Alternative 1 —Groundwater Extraction and Treatment <br /> o Alternative 2 — Groundwater Extraction with Air Sparge and Soil Vapor Extraction <br /> ® Alternative 3 - Enhanced Natural Attenuation with Oxygen Releasing Compound (ORC) socks <br /> added to monitoring wells <br /> m Alternative 4 -Enhanced Natural Attenuation with ORC direct injection into the subsurface <br /> o Alternative S -Natural Attenuation (Passive Groundwater Remediation) <br /> The general response alternatives considered for the site are discussed below <br /> G IDnta1GR0UNDZCIKN0W J S HAMIRLPclk131recL%lhilityRLpc)it do <br /> 9 <br />