Specifications include, but are not limited to: Furnish one thousand, one hundred nineteen (1,119) 8” diameter by 40” long nanofiltration membrane elements and six (6) 8” diameter by 40” long blank membrane spacers for installation in six (6) 1.0 to 1.8 MGD membrane treatment trains, including but not limited to, in existing Train 6 removal of the existing membranes from existing pressure vessels, ultimate disposition of used membranes, cleaning of and preparation of empty pressure vessels to receive new membranes, installation of new membranes, furnishing and installing all new brine seals, O-rings, interconnectors, outboard connectors, and spacers for all pressure vessels in the first and second stages, , identify and replace any damaged vessel components.