AgdaPkt 2010-09-27 - Laserfiche WebLink

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6.1 E Page 1 REPORT To the Honorable Mayor and City Council From �he Ci Mana er September 27, 2010 SUBJECT Award of Contract—2010-2011 Sewer Rehabilitation Project RECOMMENDATION Approve, by motion, the contract documents and award the standard form contract for the 2010-2011 Sewer Rehabilitation Project to Southwest Pipeline And Trenchless Corp. of Gardena for their responsive and responsible low bid of $537,275.00 and authorize the City Manager to increase the contract amount, if necessary, up to 10% of the amount awarded. BACKGROUND The city systematically replaces sections of aging sewer infrastructure to ensure the continued reliability of the system. Each year, staff from Building, Infrastructure and Transportation and Public Works Services departments identify pipelines that required excessive maintenance or experienced repeated ser�ice disruptions and target those pipelines for improvement. . Recently, staff has employed closed circuit television inspection services (CCTV} to better assess the condition of the system. CCTV technology helps to identify pipe defects such as cracks, offset joints, and root intrusion that can be remediated before a service failure. These types of repairs ensure a fully funetioning system as defects in the sewer collection system allow ground water to infiltrate the pipelines thereby reducing their capacity to collect sewerage during wet weather conditions. The 2010-2011 Sewer Rehabilitation Praject includes rehabilitation of pipe segments in the sewer basin bordered by IlVhipple Avenue, Hopkins Avenue, EI Camino Real, Edgewood Road, and Upland Road. This project will rehabilitate approximately 5,050 linear feet of sewer main. Cured-in-place-pipe (CIPP} trenchless technology methods will be used for most of the rehabilitation work. Some pipe defects, particularly those resulting in pronounced misalignment, cannot be mitigated with trenchless technology; therefore, excavation of these locations is required to mitigate the defects. Seventeen (17) general contractors purchased the plans for the project. However, only two (2) bids were received at the bid opening on September 8, 2010 and are summarized below. Staff attributes the limited number of bidders to the specialization re uired that fewer contractors can rovide. Bidder Bid Amount Southwest Pi eline And Trenchless Cor . --Gardena $537,275.00 J.F. Pacific Liners, Inc. --Vacaville $641,395.00 En ineer's Estimate $742,040.00 Recommended Bidder: Southwest Pipeline And Trenchless Corp. Substantiation: Southwest Pipeline And Trenchless Corp. is the lowest responsive and responsible bidder. The low bid of $537,275.�0 submitted by Southwest Pipeline And Trenchless Corp. is approximately 27.6% lower than the engineer's estimate of$742,000.00. Staff believes this variance is due to the decrease in cost of the pipe lining material as trenchless technology becomes more widely available. Southwest Pipeline And Trenchless Corp.