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Projects
For twenty three years,
J. D. Hair & Associates, Inc. (JDH&A) has been in the business of
providing horizontal directional drilling (HDD) expertise to owners,
contractors, and design firms. JDH&A has been a key member of design
teams for some of the most significant and challenging HDD projects ever
completed. Some of these projects are described below.
Alliance Pipeline
Project
This
high-pressure natural gas pipeline extending 1,900 miles from northern
British Columbia to Chicago was designed and constructed to the highest
environmental and safety standards required by regulatory bodies in both
Canada and the United States. During the initial feasibility and permitting
stage, JDH&A
reviewed more than fifty major waterway crossings to determine the optimum
crossing installation method. This was followed by design and construction monitoring for the HDD
crossings in Canada and
design consultation for the HDD crossings in the United States. All of the HDD
crossings were completed by the summer of 2000.
View
Photographs from the Alliance Pipeline Project
Colville River Pipeline Project
This project consisted of four 4,300-foot HDD installations through
permafrost in the Alaskan Arctic. Subsurface conditions tested the limits of
HDD technology while North Slope winter
construction conditions required work to be carried out on ice work pads in
temperatures ranging to -50 degrees Fahrenheit. JDH&A provided the
initial feasibility analysis that demonstrated to the owner and permitting
authorities that HDD could be applied at the Colville River.
This initial work was followed by consultation relative to design and
construction methods and field engineering for quality assurance.
Construction began in early 1998 and all of the crossings were completed by
the spring of 1999. This project was recognized in April of 2000 as one of five
finalists for the American Society of Civil Engineers Outstanding Civil
Engineering Achievement Award.
View
Photographs from the Colville River Crossing
Maritimes &
Northeast Pipeline Project
This pipeline,
which brings Canadian gas into the Boston Metropolitan area, is another
Canadian-U.S. system where JDH&A held the HDD position on a large
multidiscipline design team. JDH&A performed field reconnaissance at more than 50
potential HDD crossing sites in Maine, New Brunswick, and Nova Scotia to evaluate HDD feasibility. This was followed by
implementation of a major geotechnical program for potential crossings in the
State of Maine, production of design
drawings for crossings in the U.S.
and Canada,
expert testimony before regulatory agencies, and consultation during the
construction phase. All of the mainline crossings were completed in 1999.
York County South
Carolina, Catawaba River Crossing
JDH&A provided design and consulting services relative to the
installation of a 24-inch diameter sanitary sewer force main beneath the
Catawaba River in York County, South Carolina. In an effort to minimize
construction cost, this project was bid by both microtunneling and horizontal
directional drilling contractors. JDH&A's services included preliminary feasibility
analysis, HDD and microtunneling designs, production of technical
specifications, and construction monitoring. Installation was completed in
the summer of 1996.
Vermont Gas
Systems, Missisquoi River Crossing
On this project JDH&A functioned as a consultant to Vermont Gas Systems
for the installation of a 16-inch natural gas pipeline beneath the Missisquoi River. JDH&A's services included
preliminary design and feasibility analysis, preparation of drawings and
specifications, and construction management. This 1,900 foot crossing was the first
horizontally directionally drilled crossing in the state of Vermont. Preliminary engineering work began in 1990 with
installation completed in the fall of 1995.
Pipeline Research
Committee at the American Gas Association
Under the
sponsorship of the Pipeline Research Committee at the American Gas
Association, JDH&A produced two manuals related to horizontally drilled
pipeline river crossings. The first was an applications manual focused on drilling fluids and
their function in drilled crossings. The second was an overall design guide
covering engineering considerations in evaluating, designing, and installing
a drilled river crossing. Work began in the fall of 1993 and both
publications were completed by August of 1995.
Commonwealth
Electric Company, Cape Cod Canal Crossing
JDH&A provided total design and construction management services involved
with an 18-inch natural gas pipeline crossing of the Cape Cod Canal. This
involved preliminary design and feasibility analysis, consultation during the
permitting phase, production of specifications and design drawings, preparation
of contract documents, and construction management. This 1,400 foot crossing
was the first directionally drilled installation beneath the Cape Cod Canal. Preliminary engineering began in the fall of 1993 with
installation completed in the summer of 1995.
San Antonio, S.
A. Consulting and Operational Support
JDH&A provided consulting services relative to the purchase of a horizontal
drilling rig, drilling fluid system, and downhole tooling for San Antonio, S. A., an
Argentine contractor located in Buenos Aires. This support consisted of
on-site operational training with the equipment as well as engineering
support in the United
States. Initial consulting services began
in 1993 with the first crossing installation completed in the fall of 1994.
Engineering support is currently ongoing.
Sunshine Pipeline
Company, Proposed 30-inch Natural Gas Pipeline
JDH&A provided engineering services relative to preliminary design and
permitting of waterway crossings on this proposed 30-inch natural gas
pipeline extending approximately 600 miles from Pascagoula, Mississippi to
Tampa, Florida. Evaluations were conducted at over 40 waterways to determine the
optimum crossing method.
Specific tasks undertaken relative to the proposed drilled crossings on this
project included coordination of site surveys, feasibility and route
analysis, production of drawings for permit applications, and production of
plan & profile drawings. Preliminary engineering work began in late 1993.
The project is currently on hold pending market developments.
Central Hudson
Gas and Electric, Hudson River Crossing
On this project
JDH&A functioned as design consultant to Central Hudson for the
installation of a 16-inch natural gas pipeline beneath the Hudson
River. This involved preliminary design and feasibility
analysis, preparation of permit applications, geotechnical investigation,
preparation of specifications and design drawings, and construction
monitoring. The crossing, located near Poughkeepsie,
New York, was approximately
4,500 feet in length. The geology at the site required a creative design
involving a combination of cut and cover and trenchless techniques.
Installation was completed in the spring of 1992. The crossing was
recognized in 1993 as an Outstanding Engineering Achievement by the New York
State Society of Professional Engineers.
Iroquois Gas
Transmission System
JDH&A functioned as a consultant to Iroquois Gas Transmission for
evaluation and design of drilled segments on this 369 mile cross-country
natural gas transmission system extending from Iroquois, Ontario to South
Commack, New York. Detailed drilled crossing designs and specifications were
produced for the Hudson River, Housatonic
River, Milford
Shoreline, and Northport Shoreline crossings. Geologic conditions on all crossings
presented state of the art challenges. Because of this, JDH&A recommended that the St.
Lawrence River and Hudson River be installed
by cut and cover construction. The shoreline crossings were installed by cut
and cover construction at the contractor's option. The Housatonic
was installed by horizontal directional drilling. JDH&A provided support
during contract negotiations and construction monitoring assistance on this
crossing. Installation was completed by late 1991.
These projects represent only
a partial listing of JDH&A's experience. The collective experience of the
practice since its inception in 1987 comprises over 50 miles of trenchless
utility construction with an estimated construction contract value of well
over 50 million dollars.
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