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• <br /> were eliminated from further consideration on the basis of technical implementability Table 1 <br /> lists the technologies considered, along with comments regarding the screening of each <br /> technology Technologies that passed the screening process and were found suitable for <br /> constructing remedial alternatives were <br /> Remediation Technologies <br /> • Soil Vapor Extraction (SVE)/Air Sparging <br /> • Bioreclamation, Stimulate Intrinsic Biodegradation <br /> • Remediation Morutonng/Data Collection <br /> • Institutional Controls <br /> • Dnllmg/WellInstallation <br /> Abatement Technologies <br /> • Vapor-Phase Adsorption using Granulated Activated Carbon (GAC) <br /> • Catalytic/ThermalOxidation <br /> Remediation momtonng/data collection was chosen in association with each of the response <br /> actions identified Monitoring will provide information necessary to manage the impact <br /> plume, evaluate remediation progress, and demonstrate intrinsic remediation SVE, GAC <br /> adsorption, catalytic thermal oxidation, and bioreclamation were technologies chosen to <br /> address Response Action 2 The aforementioned technologies were chosen because they are <br /> established mass removal technologies Institutional controls are included to prevent use of, <br /> or exposure to, groundwater associated with the residual plume <br /> 5.3 Recommended Remedial Alternative <br /> According to CCR Title 23, Chapter 16, Article 11, at least two alternatives must be identified <br /> and evaluated for restoring or protecting beneficial water uses In addition, each alternative <br /> must be designed to mitigate nuisance conditions and risk of fire or explosion Two alterna- <br /> tives were considered below <br /> 5.3.1 Alternative 1• Natural Attenuation <br /> This alternative consists of the following elements (1) complete downgradient plume defini- <br /> tion, (2) groundwater monitoring, and (3) preparation and implementation of a contingency <br /> plan that includes institutional controls Remediation monitoring is an aspect of the existing <br /> site remediation program, and will continue to be a key aspect of any remedial alternative In <br /> addition to the current monitoring program, remediation monitoring would be performed to <br /> 3201357B1CAP 11 April 4, 1995 <br />