IFB-TK-14033-F - SOUTH SAINT VRAIN PIPELINE FLOOD REPAIRS – PHASE 1

Summary of Specifications:
SCOPE: The Project consists of re-establishing and armoring the south bank of the South Saint Vrain Creek at the pipeline diversion, re-establishing the access road to the diversion using onsite material, and replacing approximately 290 feet of ductile iron pipe (DIP) raw water pipeline. Restoration of the south bank at the pipeline diversion includes excavation of the stilling basin upstream of the existing diversion, grading the access road, and armoring the south bank of the creek at the diversion using onsite material from two borrowing sites downstream. Armoring will include imported rip rap. Pipeline work at the diversion includes tying into the existing pipeline within the diversion; installing 150 feet of new concrete encased PVC and DIP and cleanout manhole; and replacing the slide gate on the diversion, and cleaning the existing diversion discharge pipe of flood debris. Removal of old 24/27-inch pipe may be necessary if small segments survived the flood. Pipeline work at the North Saint Vrain Creek Crossing includes removing the existing access manhole on the north bank; tying in to the existing 27” raw water pipeline; installing 140 feet of new DIP under the creek; and two new access manholes. The north bank of the flow channel at the North Saint Vrain Creek will be armored with rip rap. Armoring of the south bank will be completed by others. The City of Longmont is furnishing 140 feet of 24-inch ductile iron pipe and 7 push-on joint restraints. The Contractor shall haul the City-furnished materials and furnish all other materials necessary to complete the Project. SITE VISIT: The Work at the pipeline diversion is located on City of Longmont property. It is strongly recommended that the prospective bidders investigate the site of the work sufficiently to satisfy themselves of the extent and conditions of the project. Prospective bidders may access the City property at the green gate near the diversion or walk in along the unmaintained county right-of-way. The terrain is uneven and covered with loose debris. Prospective bidders shall use caution accessing the work site and shall be responsible for their own safety. BID CONDITION: The Contractor shall provide evidence that the Contractor is qualified to perform the Work indicated in the Contract Documents. The Contractor and the Contractor’s on-site representative who has immediate charge of the Project shall each have satisfactorily completed the same responsibilities on at least one waterline replacement project with 300 feet or more of 24-inch or larger ductile iron water line with joint bonding within the last 5 years. See Section 00830 – Special Conditions.