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Project: Sewer"0"Utility Upgrades <br /> Change Order No. 1 <br /> Change Order Effective Date: May 4,2021 <br /> Bid Item#100—Cement Concrete Sidewalk Restoration. Modify existing bid item#100 by deducting <br /> 290 square yards of Cement Concrete Sidewalk Restoration @ the unit price of$65.00/SY,resulting in <br /> a($18,850.00) contract price decrease. <br /> Bid Item#103 —Force Account. Bid Item#103—Force Account. Modify bid item#103 by deducting <br /> $39,000.00 from this bid item, resulting in a($39,000.00)contract price decrease. <br /> The net result of modifying thirty, (30),existing bid items and adding three, (3),new items results in a <br /> $84,394.48 addition to the contract price. See the summary of these modified and added items on the <br /> last sheet of this change order#1. <br /> JUSTIFICATION: <br /> Bid Items#4&#64-Traffic Control Labor. Schedule A allowed 1,480 hours of Traffic Control <br /> Labor hours and Schedule B allowed 460 hours,for a combined 1,940 hours of Traffic Control Labor <br /> anticipated for the project. Project duration for this project was 130 working'days. Dividing 130 <br /> working days into 1,940 hours then gives 14.92 hours of traffic control labor per day, less than 2 <br /> flaggers per day. A project like this, one would anticipate averaging around 3 flaggers per day needed <br /> along Colby Avenue site and 2 flaggers per day for the other two alleyway site locations,although <br /> those two sites would only require about 40%of project duration. Assuming a 9-hour day work shift, <br /> with 3 flaggers per day along Colby Avenue with full contract time duration gives,(9)(3) (130)_ <br /> 3,510 hours. Add to that 2 flaggers per day for alleyway sewer installation @ 40%-contract time <br /> duration gives, (9)(2)(0.4)(130)=936 hours. So total flagger time anticipated of 3,510 hours+936 <br /> hours=4,446 flagging hours needed. Actual hours used were slightly different,however the plan <br /> quantity of hours for Traffic Control Labor were off by over a factor of 2. <br /> Bid items#5 &#65—Traffic Control—Off-Duty Police Officer. Both bid items were tracked and paid <br /> for on a force account basis and with both bid items, costs significantly underran as the need for having <br /> Off-Duty Police Officer presence on-site during construction phase was not needed nearly as much as <br /> originally anticipated. <br /> Bid items#13 &#73 —Foundation Material, Class A or B. The number of tons of Foundation <br /> Material, Class A or B underran the original bid proposal quantities as the existing soils were in <br /> general much stiffer near the pipe zone elevation level than initially anticipated. <br /> Bid items#14 &#74—Crushed Surfacing Base Course. Additional tons of Crushed Surfacing Base <br /> Course material are being used to restore Colby Avenue street subbase as much larger areas of Colby <br /> Avenue street surfacing were needing to be removed and replaced because of the sides of the pipe <br /> trenches caving in during pipe installation;mainly as a result of the soft,moist soil conditions <br /> encountered during pipe installation. <br /> Bid item#16—Control Density Fill. The number of cubic yards of Control Density Fill underran the <br /> original bid proposal quantities,resulting in a cost decrease to the contract. <br /> Bid item#29—Side Sewer Replacement. The number of Side Sewer Replacements required during <br /> construction of the project underran bid proposal quantities,resulting in a cost decrease to the contract. <br /> Page 6 of 8 <br />