Construction on TransCanada Corporation’s long-distance, large-diameter C$5.2 billion Keystone crude oil pipeline reaching from Canada’s Alberta oil fields to markets in the U.S. Midwest is grinding to completion after more than two years of intensive construction activity.
Cobble -- usually rounded pieces of rock that can range in size from a marble to a basketball -- is considered one of the most difficult and challenging soil conditions for making a directional drilling installation.
“Cobble is not fun,” said Boyd Simon, P.E., field services division manager for Ranger Directional Drilling.
Rehabilitating sanitary sewer laterals was the subject of a recent series of articles that focused on legal issues regarding ownership of laterals and the emergence of trenchless methods for lateral rehabilitation.
However, another key element in dealing with laterals involves point repairs that effectively address inflow and infiltration (I&I) problems that are structurally sound and do not require rehabilitation.
The Metropolitan St. Louis Sewer District (MSD) is in the midst of a multi-million dollar, multi-year capital improvement and replacement program that is expanding and rehabilitating the district’s entire wastewater collection and treatment system. It is the largest, most extensive improvement program in the history of the district.
In the early 1990s when compact horizontal directional drill (HDD) models began to appear on utility job sites, project owners often expressed amazement when a drill operator brought the drill head to the surface at or near the projected target.
It had been more than 35 years since Junior Kool and wife Beverly opened the first Vermeer Midwest location in Eureka, IL, so expanding the dealership’s original facility -- built by Kool in 1976 -- was imminent.