September Rehab News: New coating from 3M, Boston chooses Stantec, new pipeline contracts for Instituform


3M introduces alternative to coating water pipelines
Stantec to rehabilitate major Boston sewer line
Insituform awarded contracts for pipeline projects

3M introduces alternative to coating water pipelines
The new 3M Scotchkote Spray In Place Pipe 269 Coating for potable water pipeline infrastructure requires just a one-hour cure time and offers the ability for rapid, same-day return to water service to neighborhoods where pipelines are being rehabilitated. The Scotchkote coating remedies pipe corrosion, and in combination with a trenchless technology application process, restores pipe width and enhances water flow.

The unique polyurea blend formulation was first developed in 3M’s United Kingdom subsidiary, where similar products have successfully been used and proven for potable water infrastructure. “Coating water pipelines is crucial to public water systems to protect against leaching or migrating of contaminants into the drinking water supply,” said Gary Natwig, 3M marketing development manager for 3M Water Infrastructure. “3M Scotchkote Spray In Place Pipe 269 Coating is a sustainable cost-effective method of rehabilitating potable water pipe infrastructure.”

The company will be providing demonstrations and job training on this proprietary chemistry and trenchless application process and will establish pilots with municipalities.

Stantec to rehabilitate major Boston sewer line
Engineering firm Stantec has been chosen to design the rehabilitation of a major sewer tunnel running beneath a densely populated section of Boston, MA. The firm will be redesigning the West Roxbury Tunnel, a 12,500-foot-long, 84-inch-diameter rock tunnel that has become severely corroded over time. With depths of up to 220 feet and limited points of access, the project requires carefully planned logistics and marks the largest and most complex linear infrastructure rehabilitation project ever awarded to the firm.

The Massachusetts Water Resources Authority (MWRA) has given the tunnel project a high priority based on its critical service to as many as 125,000 homes and businesses. Stantec will be examining the conditions of the tunnel and exploring the viability of several rehabilitation or realignment options. Stantec will also manage the traffic control, permitting, surveying, hazardous materials handling, and other services related to the design and construction of the new or rehabilitated tunnel. The Massachusetts offices of Hatch Mott MacDonald and Brown and Caldwell are also key subconsultants on the engineering team.

The MWRA is one of the 10 largest water and wastewater utilities in the United States.

Insituform awarded contracts for pipeline projects
Insituform Technologies announced that Sydney Water has awarded its Asia Pacific operation two contracts for small and medium diameter sewer and stormwater pipeline rehabilitation. The combined three-year term contracts are Insituform’s largest award in Australia to date and have a budgeted value of $27.0 million, with the potential for additional work.

The awards are part of Sydney Water’s SewerFix Program, which is a three-year sewer rehabilitation program designed to protect public health and reduce the number of sewage overflows reaching the environment. Insituform’s $27.0 million contract is a portion of the $70.0 million award shared by three contractors.

During the next three years, Insituform will employ over 50 employees in the Sydney area. Insituform will also work with local subcontractors to complete these projects.

Sydney Water, Australia’s largest water utility covering over 12,700 square kilometers, provides drinking water, recycled water, wastewater services and stormwater services to more than four million people.

The Clark County Water Reclamation District in Nevada has also awarded an additional $6.8 million contract to Insituform for sewer pipe rehabilitation. Insituform began work on this project in August 2009 and will rehabilitate approximately 26,000 feet of 27-inch and 30-inch diameter aging sewer pipes. The project, which is part of Clark County’s five-year plan to rehabilitate all its large-diameter sewer pipelines, is expected to be completed by August 2010.

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