MA WAN CHANNEL CROSSING, HONG KONG

Jason Consultants were retained by Golder Associates of Hong Kong to provide specialist engineering advice for this challenging crossing below the main shipping approach to Kowloon container terminal. We developed the contract structure, designed and prepared specification and contract documents, and provided support and QA advice through the construction period.

The installation, using directional drilling, was of two 450mm PE water mains inside 600mm diameter steel casings over a length of almost 1,400 metres through completely decomposed granite including a fault zone. The project was completed successfully following our proposals.

Client: Golder Associates (Hong Kong) for Maunsell Consultants Asia
Owner: Sun Hung Kai Real Estate Ltd
Key Jason Personnel: Steven Kramer; Tom Sangster; Mike Kirby; Colin Burley

MISSOURI RIVER CROSSING, ST. CHARLES COUNTY, MISSOURI

In conjunction with Sverdrup Civil Inc. Jason Consultants designed and prepared specification documents for the installation of a 42-inch diameter water pipeline across the Missouri River using horizontal directional drilling. Ground conditions varied from alluvium to limestone. The length of the crossing was approximately 3,500 ft.

Client: Sverdrup Civil Inc.
Owner: St. Charles County Public Water Supply District, Missouri
Key Jason Personnel: Mike Kirby

SINGAPORE. ADAM ROAD & BUKIT TIMAH ROAD CROSSING

For client IRISC Technical Services Jason conducted a technical review and evaluation of the construction techniques utilised for the pipeline installation using horizontal directional drilling (HDD). The project involved the installation of a 600 mm diameter natural gas pipe within a 700 mm steel casing over a distance of almost 1,000 metres. Ground conditions were highly weathered to moderately weathered granite

Client: IRISC Technical Services
Owner: Public Utilities Board, Singapore
Key Jason Personnel: Mike Kirby

BALTIMORE-WASHINGTON PARKWAY CABLE CROSSING

Jason Consultants served as project manager for this ambitious project which involved the design and technical supervision of the installation of seven high-voltage electric transmission pipe-type cables in a 24-inch diameter bundle across a busy Interstate highway over a length of more than 2,000 feet.

Client: Sargent & Lundy Engineers
Owner: Baltimore Gas & Electric Co.
Key Jason Personnel: Steven Kramer; Mike Kirby

PROVIDENCE RIVER GAS PIPELINE CROSSING

Jason Consultants conducted a technical review and evaluation of the design, contracting and construction practices employed during the pipeline crossing of Providence Harbour in Providence, Rhode Island. The planned crossing was to drill a 36-inch diameter hole 3,800 feet in length using horizontal directional drilling.

Client: GEI Consultants
Owner: New England Power
Key Jason Personnel: Steven Kramer; Mike Kirby

HONOLULU. NIMITZ HIGHWAY CABLE INSTALLATION

Working with electrical engineers Sargent & Lundy, Jason designed the trenchless installation of electric distribution lines using guided drilling in difficult soil environments, including lagoonal deposits and basaltic rock formations. The total length of the installation was over 4,000 feet. Specification documents and engineers estimate of cost were also prepared for the client.

Client: Sargent & Lundy
Owner: Hawaiian Electric Co.
Key Jason Personnel: Mike Kirby

CARMENS RIVER CROSSING, YAPHANK, NEW YORK

Jason Consultants evaluated and designed the use of horizontal directional drilling for installing a 20-inch diameter gas transmission pipeline for a distance of 1,300 feet beneath the Carmens river. The area surrounding the river was considered wetlands and therefore extremely environmentally sensitive.

Client: Long Island Lighting Co., New York
Key Jason Personnel: Steven Kramer; Mike Kirby

ABERDEEN WASTEWATER PROJECT
FRASERBURGH OUTFALL, SCOTLAND

Montgomery Watson retained Jason Consultants to provide technical support during the process of drilling contractor appraisal for a 700m long, 450mm diameter drilled Scottish sea outfall through hard rock. Jason evaluated the tenders received from drilling contractors, prepared technical questions and participated in the interview of drilling contractors prior to project award. A major element of the work involved the quantification and evaluation of risk related to drilling in rock and the development of suitable questions to put to tenderers to help assign and mitigate risk during the work.

Client: MWL working on behalf of Balfour Beatty.
Owner: North of Scotland Water
Key Jason Personnel: Andy Robinson

RINGSEND DOCK SOUTH 110KV CROSSING PROJECT, DUBLIN

ESB International retained Jason Consultants as technical advisors for a 200m crossing of the River Dodder and Grand Dock near Dublin Port. The crossing was for a 110kV feeder cable and associated pilot cores. Jason evaluated alternative alignments and construction methods including deep tunnelling and horizontal directional drilling. Key factors included: limited site access, adjacent buildings and historic structures and tidal river conditions.

Client: ESB International
Owner: Electricity Supply Board
Key Jason Personnel: Andy Robinson

EYEMOUTH WASTEWATER TRANSFER, TREATMENT AND
SEA OUTFALL PROJECT, SCOTLAND

Following drilling problems during construction of the sea outfall on this project, East of Scotland Water requested an independent assessment by Jason Consultants of the tender documents and directional drilling methods proposed and used by the contractor during the work in support of their contractual discussions. This work lead to Mike Kirby being called as an expert witness to support the Adjudication between the Owner and the drilling contractor.

Client: East of Scotland Water
Owner: East of Scotland Water
Key Jason Personnel: Mike Kirby, Andy Robinson

HOLYHEAD WASTEWATER TREATMENT SCHEME
FINAL EFFLUENT LONG SEA OUTFALL, WALES

Montgomery Watson retained Jason Consultants to provide technical support during the process of drilling contractor appraisal for a design and build contract to install a 1100m long, 500mm diameter long sea outfall through hard metamorphic, abrasive and faulted rock. Jason evaluated the tenders received from drilling contractors, prepared technical questions and participated in the interview of drilling contractors prior to project award. A major element of the work involved the quantification and evaluation of risk related to drilling in rock and the development of suitable questions to put to tenderers to help assign and mitigate risk during the work.

Client: MWL working on behalf of Galliford/Try.
Owner: Welsh Water Capital Alliance
Key Jason Personnel: Andy Robinson
_________________________________________