The Town of Derry - Department of Public Works is seeking proposals for: Trenchless Sewer Pipeline Rehabilitation The Town of Derry Public Works Department is soliciting proposals from qualified vendors to perform trenchless sanitary sewer pipeline rehabilitation. The work specified under this section provides for the rehabilitation of an existing sewer pipeline using the Cured-in-Place Pipe (CIPP) method. The trenchless process consists of installing an 8" x 6.0mm or equivalent pipe liner inside an existing 8-inch sewer (Host Pipe) from manhole to manhole. The Cured-in-Place Pipe shall be prepared and tested by the Contractor in accordance with ASTM F1216. When installed, the liner will be a seamless, joint-less, solid wall liner that tightly conforms to the interior contours of the original host pipe. The liner shall be continuous from manhole to manhole with no seams or joints. Required service connections shall be reinstated using closed circuit television and remotely controlled cutters. The object is to restore the structural condition of the sewer and to eliminate infiltration from entering the lined section of sewer The Contractor shall perform all work necessary to install the in-place liner, including but not limited to pre-cleaning, de-rooting, bypass pumping, and work zone traffic control. The Town desires a turnkey-style proposal. Completion of work prior to June 28, 2024, is preferred. All costs relating to the work and materials supplied by the contractor in responding to this RFP must be borne by the Contractor. Communication during preparation of the Proposal: All communications with the Town of Derry with respect to this RFP must be directed to: Jan Wrona -Utility Assets Coordinator Department of Public Works 14 Manning Street Derry, New Hampshire 03038 janwrona@derrynh.org. The Town of Derry may, during assessment period, request meetings with the contractors to clarify points in the proposal. No changes by the Contractor will be permitted after the proposal closing date. Any proposal may be accepted in whole or in part. The lowest proposal may not necessarily be accepted, and the Town of Derry reserves the right to cancel the RFP call. The Town of Derry shall not be held responsible or liable for the payment of any costs that are incurred by the bidder in preparing a proposal in response to this RFP.
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