Site-Specific References
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| Title: | The East Garrington Trench and Gate System: It Works |
| Author(s): | Bowles, M.; L.R. Bentley; J. Barker; D. Thomas; D. Granger; H. Jacobs; S. Rimbey; B. Hoyne |
| Citation: | The 6th Annual Conference on Groundwater and Soil Remediation, Montreal, 18-21 June 1997, 1997. |
| Abstract: | A pilot-scale Trench and Gate ground-water interception and remediation system was installed at the Amoco-operated East Garrington gas plant in Alberta, Canada, in September 1995. This trench-and-gate configuration is a modification of the funnel-and-gate system: an up-gradient high hydraulic conductivity trench and a down-gradient infiltration gallery were added to channel flow through biosparging treatment gates using natural horizontal hydraulic gradients. The system is successfully treating in situ ground water contaminated with high concentrations of BTEX (benzene, toluene, ethylbenzene, and total xylenes) compounds. |
| Title: | The Trench and Gate Groundwater Remediation System |
| Author(s): | Bowles, Marc W. |
| Citation: | M. Sc. Thesis, Department of Geology and Geophysics, University of Calgary, Alberta, Canada. University Microfilm, Ann Arbor, MI. Item No. MQ31330. 295 pp, 1997. |
| Abstract: | Funnel-and-gate technologies used to remediate ground-water contamination may be inappropriate in low permeability sediments like glacial tills, because the design produces mounding effects that force flow underneath and around funnel walls. The Trench and Gate is a modification of funnel and gate that includes the addition of high hydraulic conductivity trenches along the up-gradient side of the funnel walls and a re-infiltration gallery down-gradient of the treatment gate. The system can be coupled with other remediation technologies in an economical, in-situ, long-term contaminant plume capture and treatment method, suitable for low to moderate permeability sediments. A prototype Trench and Gate was successfully installed at the East Garrington Gas Plant, Alberta, Canada. |
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