- Published on Wednesday, 09 January 2013 00:46
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The Town of Colonial Beach hired G.L. Howard, Inc to perform sanitary sewer improvements, also known as Phase III improvements, to the town’s sanitary sewer system on Nov. 19, 2012. The project will cost $3,236,884.
The repairs will be conducted on the numbered streets in the Classic Shores subdivision. The purpose of the project is to eliminate inflow and infiltration of rain water into the sewer system which results in a greater amount of sewage being treated at the waste water sewer plant. The filtration of extra water adds to the operating costs for the plant.
Town Manager Val Foulds and Director of Public Works Rob Murphy met with the Journal to discuss the type of repairs planned and explain the impact it will have on residents in the Classic Shores subdivision.
Dewberry and Davis was contracted to clean out and map the sewer system in the town of Colonial Beach in 2010. Through this process the town identified several areas that need repairs and areas where water lines are in close proximity to sewer lines. Although there is no chance of contamination, the closeness to the sewer lines makes repairs difficult to perform without capping off and replacing water lines. This results in higher repair costs and the disruption of water service during routine repairs. So the town has opted to move these water lines to the other side of the street while working on the sewer project. The installation of approximately 3,950 linear feet (lf) of waterline is expected.
There will be three types of repairs being conducted on the sewer lines; total replacement, relining and bursting.
The project will involve the rehabilitation of approximately 17,460 lf. of gravity sanitary sewer, ranging from 6–18 in. diameter..
In the process of relining workers will insert a membrane inside existing lines accessed by nearby manhole covers. The membrane will be inverted and treated with a solution to make it adhere to the pipe, according to Murphy. Each laterals (the pipe that connects a home to the sewer) will be cut out with a drill.
Residents may see some digging at the point of the laterals where needed, but the rest of the process will take place underground.
Bursting, which is described as rehabilitation in the companies documents, involves sending a wedge into the pipe to break it up. New pipe will be inserted behind the wedge as it follows the path of the existing pipe. Murphy said that residents can expect more digging with this process than during the relining process.
The project will also involve the removal and replacement of approximately 6,415 lf. of gravity sanitary sewer ranging from 6–18 in. diameter and reinstatement (or reattachment) of existing laterals, which involves digging up the sewer lines and replacing them the traditional way.
The project will also involve the rehabilitation of 73 existing manholes, installation of 19 proposed manholes, and the installation of new water meters, and all associated clearing and grubbing, erosion and sediment control, surface restoration, and appurtenances.
The town council will hold a public hearing at their regular meeting on Jan. 10 at 7 p.m. to receive public comment regarding the leasing of part of 700 Colonial Ave. to G. L. Howard Inc. The company will rent office space of $750 per month.
Foulds said by leasing the building the company will avoid having a construction trailer in the roadway. A company office being located within the town will also benefit residents who have questions or concerns regarding the work and will eliminate the need for residents to question workers while performing repairs.
Residents will be kept informed by letters and through the use of the instant alert system when work that will affect them is being performed in their area.
Murphy has stated that all work being performed will be within the town’s right of way, and if water and sewer service is interrupted, the company will make every effort to notify residents prior to interruption of service.