Specifications include, but are not limited to: • Install epoxy-coated flexible diaphragm manhole liners to impede groundwater
infiltration in fourteen manholes. Each manhole is to be pressure-cleaned, have leaks
grouted, steps and obstructions removed, all in accordance with manufacturer’s
specifications, prior to installation of the Multiplexx™ PVCP Liner or approved equal, or
o Alternately, if selected by the owner, installation of modified polymer liners such
as the SpectraShield lining system or approved equal (instead of Multiplexx
PVCP liners) to impede groundwater infiltration in fourteen manholes.
Installation is to be completed in accordance with manufacturer’s
specifications including, but not limited to, pressure cleaning and preparatory
• Perform by-pass pumping where necessary to convey upstream flow while performing
work on the manhole.
• Provide traffic control as necessary to protect personnel and equipment while working
on a manhole.