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BOOK106 PAGE ANALYSIS The project is 53% complete. The accumulated field orders during the past ten months of construction have been reconciled and are presented in Change Order No. 3. The change order was recommended by staff in an effort to minimize the engineering consultant's fee. The agreement with the engineer limits the project to three no -cost change orders. Change Order No. 3 consists of ten items which are mostly small field items with little change to the cost of the project. (See attached Change Order No. 3.) The following items are ofmost significance: Item No. 2. The reduction in a project computer requirement. Staff has re-evaluated the computer needs and requirements for the project. The evaluation resulted in a reduction of computer equipment. The credit to the County is $22.323.00. Item No. 5. Air compressor enclosure modifications. This item allows for better operator access to service and utilize the compressor. The additional cost submitted is $12,661.41. Item No. 6. Change effluent flow meter configuration and size. This item was due to a conflict with an existing 30" effluent line. The as -built drawings had inaccurate elevations requiring a reconfiguration of the pipe and meter. The proposed additional cost for this item. is $26.847.86. Item No. 10. Offsite wetland mitigation at the wetland in Sebastian. This issue was approved by the Board on June 17, 1997 (See attached agenda item). The contractor sought quotes from six subcontractors with only one (Ecotech Consultants, Inc.) submitting a formal proposal. The costs associated with the proposed work was negotiated and recently accepted by the Department of Utility Services and Community Development. The Community Development Department has an interest in this mitigation project since the wetland is under their management. The cost for the wetland mitigation is $82.700.00. As a result of a three-year DEP performance requirement on the wetland, the South County Wastewater Treatment Plant Contractor, Wharton -Smith, will transfer the maintenance aspect of the Ecotech contract to the County to avoid any retainage upon completion of the construction. Item No. 9. Credit for removal of alternate bid Item No. 1 for chlorine scrubber system. Staff recently decided, after long and careful consideration. that it would be in the best interest of the Department to remove alternate bid Item No. 1, the chlorine scrubber system, and proposed to investigate the utilization of chlorine generation on-site as a replacement. The staff considered the chlorine generation system, because it would eliminate the risk of handling hazardous materials on-site. The credit to the County is $160,000.00. Upon conclusion of our investigation, the staff will bring back a substitute recommendation to the Board for approvaL. Change Order No. 3 reflects a decrease in the original contract amount of $58.193.47, adjusting the contract amount with Wharton -Smith to $5.713.619.53. RECOMMENDATION The staff of the Department of Utility Services recommends that the Board of County Commissioners approve Change Order No. 3 in the amount of $58,193.47 resulting in a new contract amount of $5.713.619.53. as presented above. August 25, 1998 52