The Scientific Verification arm of the EPA – the Environmental Technology Verification Center – organized a panel of industry specialists and DOT directors, who designed and operated the verification protocol for a comparison of the tommy™ installation method and traditional trenching.
Their conclusion was that the tommy™ is 3-5 faster than the standard trench method, while producing “consistent, dependable results.”
Click here for more information on this EPA comparison study.
- Trencher must be over-backfilled, mechanically compacted, and level full when completed.
- Smiles and J-hooks must be employed to pond water and sediment.