Breaking new ground with trenchless technology > Haley Aldrich Trenchless engineering innovation saves the day for Dominion Power To trench, or not to trench Dominion Virginia Power planned to install twin 230 kV electric transmission lines from its power station in Yorktown, across the York River to its terminal station in Gloucester Point. An active shipping lane north of historical Yorktown, VA, the York River is actually an ocean inlet that varies in width between two and three miles wide in that location. Submerging the new transmission lines using traditional trenching methods presented problems. In addition to disrupting marine traffic, trenching would generate environmental impacts by disturbing sediments, oyster beds and potentially impact historical shipwrecks from the American R

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