| Site | Location | Date | Consultant/Licensed Installer | Area (ft2) | Depth (ft) | Description |
| Wisconsin Public Service Corp. | Osh Kosh, WI | June 2002 | Natural Resource Technologies / C3 Environmental | 21,000 | 14-25 | cut-off and retaining wall along river bank enhancing plume collection for treatment. |
| Kingman Power Plant | Kingman, KS | Sept. 2002 | Coranco Great Plains/ C3 Environmental | 1680 | 7 | hanging cut-off wall to confine diesel spill. |
| Industrial Site | Linden, NJ | June 2003 | Brown & Caldwell/ C3 Environmental | 146,500 | 14-28 | complete site enclosure with collection system. |
| Former Wood Preserving Facility | Hattiesburg, MS | July 2003 | Pisani/ C3 Environmental | 20,500 | 26-29 | U-shaped wall with tie-backs adjacent creek, collection system behind the wall with geotextile cover |