ABSTRACT

Contamination of soils from past operations involving volatile organic compounds (VOCs), such as from leaking underground fuel storage tanks, has become a major environmental concern. Low temperature thermal stripping of the VOCs from the soil was found to be an efficient method for removal of organic contaminants. A pilot scale field demonstration of the process using VOCs-contaminated soils became the next phase in the development of the technology. In May 1985, USATHAMA contracted WESTON to perform this phase of the work. A site with soil having various VOCs contamination was selected for the study. The mobile LT3 system is designed to handle 15,000 lb per hr of contaminated soil based on 20% soil moisture and 1 % VOCs. The system is comprised of equipment assembled on three flatbed trailers. The feed system trailer is 35 ft long.