Evaluation of Subsurface Conditions at Refinery Land Treatment Sites

摘要

Soil cores were collected at 5 different sites that had been used for land treating refinery oily waste. Core samples were also collected from similar but untreated areas adjacent to the treated ones. Samples were analyzed for various constituents in an attempt to evaluate potential movement of the waste from the sites. Data indicates that metals from the waste applied to these sites typically remained in the treatment zone. Chromium did move to depths below the zone of incorporation in one site with acidic soil. At most sites low concentrations of hydrocarbons were found below the zone of incorporation. The potential for downward migration is typically greatest in coarse-textured, sandy soils, and less in fine-textured soils. Textural discontinuities appeared to help slow the downward movement of hydrocarbons.