Johnston Construction Co.

Owner:

City of Frederick, Maryland

Architect:

Buchart-Horn, Inc.

Scope Of Work

Johnston Construction Company led the design-build team providing engineering, construction, and project commissioning services under a public bid fixed price contract for the $873,000, 1.6 MGD wastewater pump station upgrade.

The Amber Meadows Pump Station is a satellite pump station serving the highly developed commercial district along the Route 15 corridor, located in an upscale medical office complex. A major upgrade to the existing dry-pit pump station was required due to an increase in recurring station failures. The new station was constructed within a twenty foot sewer easement and designed to blend into the surrounding architecture and landscaping. Right-of-way conditions challenged the project by requiring the new station to be constructed exactly where the existing station was located. After relocating the existing generator, the station building was constructed around the below grade dry well. The existing station continued to be utilized during construction which eliminated the need for costly diesel by-pass pumps. Once the new pump station was operational, the existing below grade dry-pit pump station was demolished from within the building.

The upgraded pump station includes three new 40 HP Gorman Rupp suction lift pumps, associated variable speed controls, influent grinder system, flow metering equipment, telecommunications monitoring, and a 100 KW emergency generator. The equipment was fully enclosed in a new split faced masonry building with architectural features to match the surrounding commercial buildings.

The project was completed in July of 2005.