Accession Number : ADA310206

Title :   Enhanced Deep Soil Vapor Extraction Process (EDSVEP) Treatability Study Report.

Corporate Author : MORRISON KNUDSEN CORP DENVER CO ENVIRONMENTAL SERVICES GROUP

PDF Url : ADA310206

Report Date : 07 JUL 1995

Pagination or Media Count : 104

Abstract : A treatability study was conducted to evaluate whether the Enhanced Deep Soil Vapor Extraction Process (EDSVEP) is practicable for the removal of low volatility compounds from unsaturated subsurface soils. Test results indicate that EDSVEP may be an effective in situ alternative for the remediation of subsurface soils contaminated with low volatility compounds. However, depending on site-specific conditions and remediation goals, this technology should be fully compared with other remedial alternatives. Based on the treatability study results, preliminary evaluation and economic analysis of a full-scale system has been provided. An objective of this study was to determine the appropriate balance between extraction and injection flow rates such that the injection rate may be maximized while containing and recovering the injected air. Helium tracer tests were utilized to evaluate the subsurface flows and injected air recovery rates. The helium tracer tests proved to be a useful tool for evaluating subsurface flow conditions and determining the appropriate flow ratios. In addition, tracer tests conducted during soil heating were used to improve operating conditions as the test progressed.

Descriptors :   *VAPORS, *SOILS, *EXTRACTION, *SOIL POLLUTION, *SUBSURFACE, TEST AND EVALUATION, INJECTION, RECOVERY, ECONOMIC ANALYSIS, AIR, RUBBER, FLOW RATE, HEATING, VOLATILITY, HELIUM, CONTAMINATION, SILICONES, BENCH TESTS, TRACER STUDIES, UNSATURATED HYDROCARBONS.

Subject Categories : Soil Mechanics
      Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE