Design of sewer pipeline under way
JOHNSTOWN – Design work has begun for the Gloversville-Johnstown Wastewater Treatment Facility’s major capital project to replace manholes and repair parts of the facility’s 50-year-old main sewer pipeline between the two cities.
Facility Wastewater Engineer Tyler Masick said C.T. Male Associates of Johnstown has been working on the trunk sewer. He said the engineering firm has been preparing documents for the project, which will involve “cleaning and relining.”
C.T. Male engineers in October told the board its evaluation of the line about a year ago found the work may cost about $4.4 million.
Masick said C.T. Male needs more survey and design work done and requested an amendment to its contract for up to $26,820 to do the work. The board authorized the expenditure, which was already in the sewer plant’s capital plan.
Fiscal Officer Donna Renda said the extra cost was unanticipated, although the plant can tap reserve funds to pay for it.
C.T. Male last year conducted a major evaluation of the concrete underground line using video cameras.
The line runs from Harrison Street in Gloversville to the sewage treatment plant on Union Avenue in Johnstown.
The inspection found debris and grit in the flow channel, cracked pipes and some significant obstructions that restrict sewer flow. Officials said there was a buildup of material actually attached to the reinforced concrete pipe. The engineering firm identified 10 projects that should be looked at over the next several years.
The C.T. Male report stated reinforced concrete pipe and manholes are strong but also susceptible to root penetration at joints, infiltration and inflow, and corrosion due to harsh liquid and gaseous chemicals.
Main trunk line work will involve relining of parts of the 19,750-foot pipeline and the replacing manholes. The trunk line ranges from 24 inches in diameter to 42 inches diameter. The part of the pipeline installed in 1963 is mostly vitrified clay tile sections with pre-cast concrete manholes.