- County Board awards $2.4 million contract
- Maintaining critical infrastructure
- Neighborhoods throughout County targeted
The Arlington County Board today approved a $2.4 million contract to D.H.C. Corporation for the rehabilitation of water mains, many of which have been in service for more than 60 years. The work will take place in several neighborhoods throughout the County and also includes installation of a few new water mains that cannot be rehabilitated.
“It’s critical that we continue to invest and update our aging infrastructure to meet the needs of our growing population,” said Arlington County Board Chair Mary Hynes. “By maintaining our system, we’re able to provide the best water service possible and help prevent disruptive main breaks.”
The Board voted 5-0 to approve the contract, as part of its Consent Agenda.
Cleaning and cement-mortar lining
Build-up of metal scale and corrosion products on the interior wall of the pipes increases with age and can decrease the pipes’ water-carrying capacity. Rehabilitation involves a process called Cleaning and Cement-Mortar Lining, which removes excess build-up and applies a cement layer inside the pipe to protect from further deterioration.
To read the staff report for this item, visit the County website. Scroll down to Item #25 on the Agenda for the Saturday, Sept. 19 County Board Meeting.
The effort is part of the ongoing Water Main Cleaning and Lining Program conducted by the Department of Environmental Services (DES). Each year, the County selects water mains for rehabilitation in various neighborhoods based on age, frequency of main breaks and reduction in flow capacity for rehabilitation at the fraction of the cost of new construction, and with minimal disruption to the community.
This project is part of the Water Main Rehabilitation Replacement Program, which is budgeted in the Utilities portion of the FY 2015-2024 CIP (Capital Improvement Plan).