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Human Health Risk Assessment Former Mobil Oil Bulk Plant 04-343 540 East Grant Line Road Tracy, California • Remediation of either ground water or soil is limited by technological and financial considerations. ' • The immediate area surrounding the subject site is zoned primarily for commercial/industrial use. Attempts to attain stringent water quality objectives will require large expenditures of both ' money and natural resources. However, it may be reasonable to exert srecial efforts to preserve unusually high water quality where such efforts are cost-effective and consistent with federal and ' state policies. The inorganic chemical and physical quality of ground water at the subject site is not consistent with a classification of unusually high water quality. F,irthermore, the citizens of California will not realize a tangible benefit by achieving high wate, quality objectives at this ' site, especially when beneficial uses of ground water cannot be achieved due to background water quality and technological limitations. With this in mind, the 11I imary objective of this ' remedial action should be to ensure protection of human health and the ..—nvironment in a manner which is consistent with local site conditions and anticipated land use. 1.3.2 Considerations of Final Remediation Plan ' Various technologies are available for hydrocarbon-affected soil and ground water remediation. The feasibility of using available remedial alternatives were evaluated for this site, and ' remediation technologies were qualitatively evaluated based on the following considerations: • Current and potential site use. • Economic considerations such as capital and maintenance costs. Site-specific conditions: depth and types of contamination present beneath the site, soil ' properties, soil stratigraphy, regional site use, background water quality, and remedial measures previously initiated. r 3D-0136-11 ' 1-13