Completed Project
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| Contaminants Treated: | Kerosene-like specialty fuel |
| Starting Contaminant Levels: | 10 feet of free product |
| Treatment Area: | 4,900 square feet |
| Treatment Volume: | 2,200 cubic yds |
| Cleanup Levels Achieved: | Met Goals; removed fuel to less than 1/8 inch |
| Geology: | Sandy clay Saprolite with moderately low permeability and high heterogeneity |
| Hydrology: | Groundwater between 23-27 feet bgs |
| Remediation Time Period: | May 31, 1999 - December 10, 1999 |
| Project Manager: | Mr. Greg Beyke |
| Remediation Engineer: | Mr. Greg Beyke |
| Operations Manager: | Mr. Greg Beyke |
| Percentage of the Work Performed by Personnel now Working for TRS: | |
| Design: | 100% |
| Installation Oversight: | 100% |
| Installation: | 50% |
| Operation Oversight | 80% |
| Operations: | 40% |
ERH and multi-phase extraction were used to remediate a floating hydrocarbon plume beneath a manufacturing facility in a metropolitan area located in the southeastern portion of the U.S. The hydrocarbon was a specialty fuel similar to kerosene or diesel fuel. Initially, separate phase hydrocarbon covered an area of 4,900 square feet and was up to l0 feet thick, with most wells containing 1-3 feet of hydrocarbon. Most of the floating hydrocarbon was beneath the manufacturing building. The soil from the building floor to a depth of about 50 feet was composed of sandy clay Saprolite with moderately low permeability and high heterogeneity. The static water table is about 24 feet below grade. Due to site heterogeneity, wells separated by only a few feet varied in hydrocarbon thickness by several feet.
Figure 1. ERH and Multi-Phase Extraction Remediation System
Inside the Building.
Remediation began on May 27, 1999. Remediation to less than 1/8-inch hydrocarbon was completed on December 10, 1999 following less than six months of ERH operations. The remediation system relied on several mechanisms to remove hydrocarbon including: 1) Heating to reduce hydrocarbon viscosity, 2) Hydrocarbon floatation/agitation by rising steam bubbles, 3) Thermally enhanced vaporization (fuel boiling), and 4) Vacuum-enhanced pumping (See Figure 2 below).
Figure 2. ERH and Multi-Phase Extraction Remediation System
Inside the Building.