horizontal directional drilling (HDD) definition

horizontal directional drilling (HDD) means a trenchless construction method using equipment with a guided drill head to create an underground path for pipe installation by pushing or pulling.
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Examples of horizontal directional drilling (HDD) in a sentence

  • Since essentially all of the new system will be constructed in previously developed areas, horizontal directional drilling (HDD) was selected as the construction method for all but the largest sewers (42-in diameter and greater).

  • From these candidate landfall locations (“Landing Sites”), the routing would consist of a shoreline landing and shoreline departure conducted via horizontal directional drilling (HDD) with approximately two miles of underground transmission line between as further described below.

  • The pipeline would be constructed under the San Joaquin River and Fresno Slough, within the Commission’s leasing jurisdiction, using horizontal directional drilling (HDD) techniques.

  • Tsawwassen also raised concerns related to potential vibrations and noise introduced to the aquatic environment of the Fraser River during horizontal directional drilling (HDD) of the watercourse crossing.

  • Consultant shall perform a geotechnical site investigation at the proposed horizontal directional drilling (HDD) crossings to characterize the subsurface conditions for trenchless crossing design and construction.

  • Mitigation Measure BT-2b: Not required for Project Staff-Recommended Alternative (selection of RUWAP Alignment Option and Alternative Monterey Pipeline) Mitigation Measure BT-2c: The project proponents in coordination with the contractor shall prepare and implement a Frac-Out Plan to avoid or reduce accidental impacts resulting from horizontal directional drilling (HDD) beneath the ▇▇▇▇▇▇▇ River.

  • Trenchless technol- ogy alternatives evaluation included cured- in-place pipe (CIPP), sliplining, pipe bursting, and horizontal directional drilling (HDD).

  • This Horizontal Directional Drill Contingency Plan (Plan) discusses how San Diego Gas and Electric Company (SDG&E) and its contractors will implement procedures to minimize impacts from an inadvertent release during horizontal directional drilling (HDD) or horizontal boring (jack-and-bore) during construction of the East County (ECO) Substation Project (Project).