Abstract: The invention relates to a system and method for containing and mitigating spills and leaks from pipelines. According to one embodiment, the system comprises a pipeline for transporting a liquid; a barrier layer comprising material impermeable to the liquid; a trench excavated with sufficient depth and width to accommodate at least the pipeline as well as the barrier layer; two berms; and backfill. The berms are substantially parallel and positioned on either side of the trench. The barrier layer is disposed to cover the trench and berms, reaching at least the ridgeline of the berms. The pipeline is disposed within the trench above the barrier layer. The backfill is placed on top of the pipeline and the barrier layer, and the backfill is graded to form a grade bridging the ridgelines of the berms.

Abstract: The invention relates to a system and method for containing and mitigating spills and leaks from pipelines. According to one embodiment, the system comprises a pipeline for transporting a liquid; a barrier layer comprising material impermeable to the liquid; a trench excavated with sufficient depth and width to accommodate at least the pipeline as well as the barrier layer; two berms; and backfill. The berms are substantially parallel and positioned on either side of the trench. The barrier layer is disposed to cover the trench and berms, reaching at least the ridgeline of the berms. The pipeline is disposed within the trench above the barrier layer. The backfill is placed on top of the pipeline and the barrier layer, and the backfill is graded to form a grade bridging the ridgelines of the berms.