This is a cool time-lapse video of a DeWind one-pass trencher installing 350 linear feet of 25′ foot deep Groundwater Collection (HDPE slotted 4″ pipe backfilled to grade with pea stone) in a single pass under the water table in a single pass. Their method and technology did not require any dewatering, shoring, or open excavations. [Source: YouTube via Read more about this interesting technology and company at DeWind’s website. Image: YouTube]
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