AgdaPkt 2009-10-12 - Laserfiche WebLink

Browse Search

6.1 D The low bid is based on the total bid amount (base bid plus the optiona! bid items). For Page 2 purposes of bidding, the work of this project was divided into three areas as represented by the base bid and the finro additional bid item options. The bid was structured this way to account for the disparity in the cost to dispose of dredged ma#erials from different parts of the fagoon. Due to the presence of polycyclic aromatic hydrocarbons (PAH) in concentrations greater than 4 ppm in some areas of the lagoon, the Regional Water Quality Control Board (RWQCB) will not permit all of the dredged materiai to be redeposited in Area H ai�hough these sediments pose no health or safety risk unless ingested. The much higher cost of disposing dredged material with greater concentrations of PAH significantly increases the cost of this project. The apparent low bid of �2,09�,573.25 submitted by Clean Harbors Environmental Services, Inc. is considered non-responsive by staff because quantities for two bid items were given in tons rather than cubic yards as specified. Therefore, staff recommends that Council reject the bid from Clean Harbors Environmental Services, Inc. and award the contract to Aquatic Environments based on their second lowest bid amount of $2,185,7fi4.00. For the reasons given above and the limited availability of funds, staff requests that Council award the contract based on the total bid amount but for the amount of the base bid. Staff will return to Counci( to increase the scope of work on this project when additional funds become available. The lowest responsive total bid of$2,185,764.00 submitted by Aquatic Environments is 14.4% higher than the engineer's estimate of $1,911,710.00, however the base bid amount of $712,7�0.0� is aimost 20% lower than the engineer's estimate. Staff believes the difference befin►een the total and base bid amounts to be reflective of the disparity in the disposal costs of dredged material. Based upon the bids received, staff befieves that the low bid of $2,185,764.00 is fair and reasonable and recammends awarding the contract to Aquatic Environments for the amount of their base bid which is $712,700.00. ALTERNATIVES Council may choose not to award the contract, and direct staff to modify the scope of work and repeat the bidding process, or defer the work of this project. FISCAL IMPACT Proje�t funds have been appropriated as Capital Projects Fund — Shores Lagoon System Dredging and $1,363,906.73 is available as of August 31, 2009. Brian Lee, PE, CFM Chu Chang, PE, LEED AP Supervising Civil Engineer Building, Infrastructure, and Transportation Department Director Peter Ingram City Manager ATTACHMENTS None REI.ATED DOCUMENTS tN CITY CLERK'S OFFICE 1. Contract Documents 2. Bid Documents