R2018-86 Accepting the Bid and Authorizing the Execution of a Contract with Insituform Technologies USA, LLC for 2018 Trenchless Long Lining Repairs Project City Project 2018-28

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locations were identified from the annual televised inspections conducted in the City's sanitary sewer system. The trenchless long lining process involves the insertion of a resin saturated felt tube from manhole to manhole that hardens to provide a smooth repair. The felt tube is inflated using water or air through the sewer. Water or air pressure is increased in the tube which presses it tightly against the walls of the sewer pipe. The water or air is then heated to activate the resin system within the tube, causing the pipe lining to cure and harden to form a new structural pipe within the old damaged sewer pipe. When curing is complete, private lateral lines are re-opened using a remote-controlled cutting tool. Long lining is the most cost-effective approach to repair pipes that have many structural deficiencies or significant damage. The 2018 Trenchless Long Lining Repairs Project will line approximately 13,726 lineal feet of the sanitary sewer ranging from 8-in to 33-in and 480 lineal feet storm sewers ranging from 12-in to 30- in diameter. The work also includes lateral reinstatement, video inspection, sewer cleaning, liner testing, and traffic control. Project Bid Review The project plans and specifications were prepared by Engineering Division staff. The project was advertised May 30, 2018 and bids were opened on Wednesday, June 20, 2018. The results for the letting are as follows: Compared to Bidder Bid Price Engineer's Est. Over(-Under) Insituform Technologies USA,LLC $754,877.50 3.19% Hoerr Construction,Inc. $803,668.40 9.86% SAK Construction,LLC $827,992.50 13.18% Visu-Sewer,Inc. $900,904.00 23.15% Engineer's Estimate $731,552.00 -------- Insituform Technologies USA, LLC provided the lowest, qualified bid at 3.19% above the Engineers Estimate. The prices came in slightly higher than expected due to the larger diameter pipe and shorter pipe sections. The majority of cost is in setup, inverting, curing, cooling and teardown which is the same for a short or long run. The added material cost is minimal. The prices are reasonable for project scope. Insituform is located in the St. Louis area and has successfully completed sewer lining work for the City in the past. They have completed many annual trenchless long lining projects and were the general contractor for the Lake Shore Drive Sewer Critical Sewer Rehabilitation Division B and C and Union Street Sewer Critical Sewer Rehabilitation Project. Insituform will adhere to the prevailing wage requirements of the State of Illinois. Staff recommends that the City Council approve a contract with Insituform Technologies USA, LLC to perform the 2018 Trenchless Long Lining Repairs project. —2—