• Construction photo taken during expansion of Arnold Waste Water Treatment in Anne Arundel County, Maryland
  • Technician installs raw water conduit
  • Expansion of Arnold Water Treatment Plant, shown during construction
  • Construction workers install sidewalk at expanded Arnold Water Treatment Plant in Maryland
  • Construction photo taken during expansion of Arnold Waste Water Treatment in Anne Arundel County, Maryland
Capacity doubled at water treatment plant in Maryland

The Arnold Water Treatment Plant in Anne Arundel County, Maryland, is situated on the Broadneck Peninsula, bounded on the north by the Magothy River, south by the Severn River and east by the Chesapeake Bay. The plant provides finished water to the Broadneck and Severndale service areas.

Challenge
The water treatment plant had become antiquated and required frequent maintenance. In order to keep up with the peninsula’s growing population, it required greater capacity to increase water supply to the northern part of the county and reduce purchase of finished water.

Deciding that that the most cost effective, low risk option was to upgrade and expand the existing facility, the County selected Louis Berger to provide construction management and inspection services for the $23 million expansion of the Arnold Water Treatment Plant. Louis Berger was responsible for the construction of four projects simultaneously, including construction of raw water production wells and well houses, and raw water lines to the treatment facility.

Solution
Components built during expansion included three aerators, two rapid mixers, an expanded influent channel, four flocculation and sedimentation basins, six filter process units and a plant-wide supervisory control and data acquisition upgrade. The expansion effectively doubled plant capacity from 8 million to 16 million gallons per day.

To keep track of the project and minimize costs, Louis Berger used its web-based management system that allowed the contractor and engineer-of-record to report their progress online.

Other services provided by Louis Berger included schedule development and maintenance, cost control management, independent estimates, construction stakeout/survey, quality control, and inspections.  Louis Berger also provided a forum for informal exchanges to resolve any project issues and avoid claims.