CCP 07-08-2014 - Laserfiche WebLink

Home Browse Search

Report Number 14 -173 Agenda Section VI -3 the city that works for you Council Meeting Date July 8, 2014 REQUEST FOR COUNCIL CONSIDERATION ITEM DESCRIPTION: CONSIDERATION OF PARTIAL PAYMENT 3 FOR PROJECT 14 -4, IRON /MANGANESE REMOVAL SYSTEM FILTER REHABILIATION — WTP #1 DEPARTMENT HEAD'S APPROVAL: &-mW CITY MANAGER'S APPROVAL: No comments to supplement this Comments attached Recommendation: To approve Change Wder 2 in the amount of $119,685.00 and Partial Payment 3 in the amount of $119,196.50 for City Project 14 -4, Iron/Manganese Removal System Filter Rehabilitation — WTP #1 to Rice Lake Construction Group. Legislative History: Council approved Plans and Specifications November 26, 2013 Bids opened by Staff January 14, 2014 Bid Awarded January 28, 2014 Financial Impact: The attached change order includes compensation to Contractor for extra time and different equipment used during coating removal and installation work on filter vessel #4 due to different conditions within the filter than what was assumed during bidding. Contractor will not profit because of their initial low bid, but be compensated at cost for items above their original proposal. This change order constitutes a final not to exceed price, and the City reserves the right to ask for additional cost documentation for negotiating a lower price if work conditions change on the remaining filters. Please see attached change order for details. A review of the work completed and payment recommendation has been completed by Barr Engineering. Please see attached payment breakdown for details. Explanation: This project consists of rehabilitating the four iron/manganese removal system filter vessels at WTP #1. Project items include: 1. Site mobilization, temporary entrance, demobilization. 2. Remove filter media and gravel. 3. Filter vessel inlet pipe inspection. 4. Remove underdrain nozzles. 5. Prepare and re -coat filter interiors (includes surface preparation, stripe coat, primer and finish coat(s). 6. Provide new underdrain nozzles. 7. Remove and provide new sample tap screens. 8. Provide new access manway gaskets. 9. Provide new gravel retaining screens. 10. Provide new gravel base and filter media. 11. Disinfect vessels and provide bacteriological testing. 12. Remove existing and provide new inlet distributor piping for all vessels. 13. Remove existing and provide new air wash distributor piping for all vessels. 14. Remove and replace stainless steel studs, clips, and underdrain support steel used to support the media and gravel retaining screen (added via Change Order 1).