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Contract - Floodwall Improvement Change orders 4 and 5THE CITY OF '~ DuB E ~,-~-~ MEMORANDUM March 26, 2007 TO: Michael C. Van Milligen, City Man,~ag1er FROM: Don Vogt, Public Works Director k~ l/~ SUBJECT: Floodwall Improvement Projects -Change Orders #4 and #5 INTRODUCTION The purposes of this memorandum are to provide information and request your action regarding the attached change orders for the Floodwall Improvement Projects currently underway. BACKGROUND The Floodwall Improvement Projects, providing auxiliary power to the floodwall's Maus Lake and Hawthorne Street pumping stations, along with numerous infrastructure enhancements at the Bee Branch Pumping Station, are currently underway. The total budget appropriation for the projects is $555,766.00 - $446,420.80 for the construction contract, $66,400.00 for engineering fees, and, $42,945.20 for contingencies. DISCUSSION A memorandum from Street and Sewer Maintenance Supervisor John Klostermann regarding proposed change orders #4 and #5 is attached. Also attached are the noted change orders in triplicate. The work associated with the change orders is considered essential for the improvements at the Bee Branch and Hawthorne pumping facilities. The total cost of the proposed change orders is $4,920.60. When added to the three previously-approved change orders, the total change order cost would equal $19,310.01. This would leave a contingency fund balance of $23,635.19. The additional cost of the five change orders would equal 4% of the original construction contract for the projects. ACTION STEP Your endorsement of the attached change orders is recommended and requested. CC: Jenny Larson, Budget Director Attachments THE CITY OF DuB E MEMORANDUM ~.`~~ March 26, 2007 TO: Don Vogt, Public Works Director FROM: John Klostermann, Street/Sewer Maintenance Supervisor ~~ SUBJECT: Floodwall improvement Projects -Change Orders # 4 & 5 Introduction The purpose of this memorandum is to request your approval of change orders # 4 & 5 for the Floodwall Improvement Projects at Hawthorne Street, Bee Branch and Maus Lake Pumping Stations. Discussion Change order # 4 is for various types of necessary construction related changes associated with the improvements being made at the Bee Branch Floodwall Pumping Station. These changes include pouring a return wall from the end of the retaining wall back to the existing building foundation and to pour a concrete pad between the sidewalk and existing building. Change order # 5 is for the Hawthorne Street project. The existing 5KVA transformer located in the building was replaced with a 10KVA transformer to serve the new equipment associated with the generator. I have reviewed the change orders as submitted with Charles Cate of IIW and we both feel that the change orders are fair and just. Action Required I am requesting that you review change orders #4 and #5 and recommend payment. C: ; r CHANGE ORDER Change Order No: 4 Date: March 12, 2007 Agreement Date: August 21, 2006 Owner City of Dubuque Project: Hawthorne Street, Bee Branch and Maus Lake No. 05036-01 Flood Wall Pumping Facilities Generator Installation Contractor: Kluck Construction, Inc. Description of Change: 1) Return a concrete wall from the end of the retaining wall back to the existing building foundation. 2) Pave area between the stair and existing building south corner from sidewalk curb to existing building stoop slab after installation of fence post. Lump Sum for Items 1 & 2 Justification for Change: $1, 815.60 1) The elevation difference of the grade behind the retaining wall and the grade to the south of the retaining wall termination point is too great. 2) Slope is too great to maintain clean stone. Change in Contract Price: The amount of the contract will be Increased by this change order by the sum of One Thousand Eight Hundred Fifteen and 60/100 Dollars $1,815.60 Adjustment in Amount of Contract: 1. Amount of Original Contract 2. Net Addition due to all previous change orders 3. Amount of contract not including this change order 4. Addition to contract due to this change order 5. Amount of contract including this change order $446,420.80 $14, 389.41 $460, 810.21 $1, 815.60 $462,625.81 I-1 . ~, Change Order Page 2 Change Order Conditions: The contract completion period established by the original contract and previous change orders will remain unchanged. Work performed under this change order will be subject to all the requirements as stated herein and in the contract documents and all change orders. The Contractor expressly agrees that he will place under coverage of his Contractor's Improvement Bond and insurance all work covered by this change order. All work performed under this change order shall be performed in accordance with. the requirements of this change order, the plans, the specifications, and the contract documents. Recommended for Acceptance: Accepted and/or Requested: Attest: BY NAME Signature TITLE Type or Print Approved and/or Requested: Attest: BY NAM E Signature IIW ENGIN~R6 &~CJRVEYORS, P.~ ~ Signature NAME Charles A. Cate, P.E. Type or Print TITLE President DATE I ~ ~ L.Q~ CONTRACTOR Kluck Construction, Inc. :; ~~ , ~ BY- _ 'nature NAME .~~~ Type or Print TITLE DATE ,~-a0-- y' OWNER ity of Dub que, Iowa BY Signature NAME Michael C. Van Milligen Type or Print TITLE City Manager Type or Print TITLE DATE ~ 7 Q I-2 '~ w CHANGE ORDER Change Order No: 5 Date: March 12, 2007 Agreement Date: August 21, 2006 Owner: City of Dubuque Project: Hawthorne Street, Bee Branch and Maus Lake No. 05036-01 Flood Wall Pumping Facilities Generator Installation Contractor: Kluck Construction, Inc. Description of Change: De-energize and remove existing 5KVA transformer from MCC. Furnish and install new 10KVA transformer along with fused disconnect and associated fuses. Lump Sum $3,105.00 Justification for Change: Existing transformer did not carry a high enough rating to serve the new equipment. Existing transformer replaced with a new higher capacity transformer. Change in Contract Price: The amount of the contract will be Increased by this. change order by the sum of Three Thousand One Hundred Five and 00/100 Dollars $3,105.00 Adjustment in Amount of Contract: 1. Amount of Original Contract 2. Net Addition due to all previous change orders 3. Amount of contract not including this change order 4. Addition to contract due to this change order 5. Amount of contract including this change order Change Order Conditions: $446,420.80 $16, 205.01 $462,625.81 $3,105.00 $465, 730.81 The contract completion period established by the original contract and previous change orders will remain unchanged. Work performed under this change order will be subject to all the requirements as stated herein and in the contract documents and all change orders. I-1 :~ Change Order Page 2 The Contractor expressly agrees that he will place under coverage of his Contractor's Improvement Bond and insurance all work covered by this change order. All work performed under this change order shall be performed in accordance with the requirements of this change order, the plans, the specifications, and the contract documents. Recommended for Acceptance: Accepted and/or Requested: Attest: BY Signature NAME IIW ENGIi~1F~ERS~SURVE,Y-61RS,~:C. BY /% Signature NAME `Charles A. Cate, P.E. Type or Print TITLE President DATE ~J q' , CONTRACTOR Kluck Construction, Inc. BY t.C'-YiL~~`-~ ., ignature NA Type or Print TITLE ~~ ~l.,i'~ Type or Print TITLE DATE ~-~ ~~ Approved and/or Requested: OWNE Ci y of Dubuque, Iowa Attest: BY 'L Signature g~( NAME Michael C. Van Milligen Signature Type or Print NAME TITLE City Manager Type or Print TITLE DATE ~ ~ Gr I-2