Waukegan sewage pipeline to be analyzed for safety
BY ED COLLINS Special to The News-Sun August 16, 2013 7:56AM
North Shore Sanitary District’s final effluent pumping station in Waukegan pumps clean water to the Des Plaines River through a six-mile underground pipe. | Ryan Pagelow~Sun-Times Media file
Updated: October 16, 2013 1:15AM
GURNEE — Trustees of the North Shore Sanitary District authorized a failure risk analysis be undertaken immediately on a major 54-inch embedded cylinder pipeline that carries treated sewage 5.6 miles from the Waukegan Sanitary Treatment Plant to the Des Plaines River.
The buried concrete pipe, or force main as sanitary engineers call it, containing embedded wires in the concrete to strengthen it has a history of breakage as it ages that potentially could cause breaks and basement backups in some parts of the city.
Two major breaks have already occurred in the pipeline that was built in 1976.
On Wednesday, Aug. 14, the Board approved a $32,000 low bid submitted by the engineering firm of Simpson, Gumpertz and Heger Inc., to carry out the study and review results of similar studies made in 2002 and 2008.
These studies will identify problem areas in the pipeline so that construction crews can eventually replace the stressed pipe sections.
The rehabilitative process will be expensive, running in the millions, say NSSD engineers.
The NSSD Board also approved a $269,600 sludge pumping improvement package at the Waukegan Sanitary Treatment Plant that will make it more efficient in processing and disposing of sludge waste.
In other action, Midwest Power Vac’s proposal offering to extend their one-year scum removal and disposal services contract at the Waukegan, Gurnee, and Highland Park Clavey Road sanitary treatment plants was approved by the Board and will be effective until November 2014.