The City of Rome Water Pollution Control Facility Primary Settling Tank Rehabilitation Project involved repairing existing concrete primary tanks that were constructed in the 1930’s and 1940’s. Portions of the tanks were in poor condition with cracks and concrete spalls. In 2013, the City hired CDM Smith to structurally evaluate the primary settling tanks and develop design documents for rehabilitation. In order to comply with permit requirements, the project was phased to allow for the majority of basins to be online while repairs occurred.
As construction progressed, it became apparent through demolition and improved visibility of concrete, that select areas in the tanks would require more extensive repair. One of these repairs involved removing a section of top slab over an influent channel which was subsequently replaced with grating. The grating has provided the City with an increased area to visually inspect and remove grease build-up than was provided with a small hatch in the old concrete slab.
Through rehabilitation, the City has extended the life of their primary settling tanks and avoided the large capital expense of tank replacement for many years to come. CDM Smith, in conjunction with M.J. Engineering and Land Surveying, prepared bid documents and provided construction inspection. The construction contract was awarded to M. Hubbard Construction.