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Attachment A STATE AID FOR LOCAL TRANSPORTATION Rev. February 2018 ra.Ns%oar.non \.r j^`1 iii GE �C)RD LI SP/SAP(s) 187-020-021 1 MN Project No.: I I Change Order I 1 Project Location _Old Snelling Trail, County Road E, and E2 Local Agency Arden Hills Local Project No. Contractor Sunram Contracting Contract No. Address/City/State/Zip 20010 751h Ave north, Corcoran, MN 55340 Total Change Order Amount $ $142,675.38 During the construction of Wail 3 along Old Snelling road it was determined through potholing that the depth and extent of the unsuitable materials under wall 3 extended substantially further than could be determined through the project soil borings. This change in depth would have caused a substantial increase in project cost for the necessary removal of this material. Therefore, the Engineer designed an alternative to place the retaining wall on a Helical pile support system to mitigate the change in soil conditions encountered. During the construction of the drilled water main, the City requested that the contractor pull two wires with the Water main to ensure a backup wire is available to locate the water main if needed. This request was made after a wire broke on one segment of the installed watermain requiring the contractor to drill a new wire and then dig down to connect to the existing wire for locating the watermain. Therefore, the Contractor started pulling two wires along the remaining sections of watermain that had not been install on the project and they drilled a new wire along the stretch of pipe where the tracer wire had broken and dug down to connect the new wire to the existing. During the construction of the project is was determined that the existing pavement markings were conflicting with the project detour traffic control. Therefore, the engineer directed the Contractor to remove the existing project striping that conflicted with the project traffic control plan. The contractor agreed to this extra work to remove the striping on the project, the pricing shown below includes all necessary mobilization, additional traffic control, and labor for flagging required to complete the work. During the first stage of construction it was discovered that most of the existing pavement removal was substantially thicker than what was found in the borings. This included thicker bituminous pavement and an underlying concrete pavement with reinforcing. The contractor requested to be compensated for the changed condition and the extra work necessary to remove the concrete pavement and extra bituminous. "Group/ funding Category ® • Item No. e• . .• a Description Unit •re •r e • i i Unit Price e + or— Quantity + or— Amount $ 4 2411.61 E Helical Piles Each 1015.00 77* $78,155.00* Prime markup on Subcontractors 10%+2% $5,563.10 4 2504.603 Additional tracer wire installed with WM LF $ 0.62 3383 $ 2,097.46 4 2504.603 Drill tracer wire along WM and connect LS $3,750 1 $ 3,750.00 Prime markup on Subcontractors 10% $ 584.75 Page 1 of 2