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CENTURY WEST ENGINEERING - 60% COST ESTIMATE <br />KITTIAS COUNTY <br />BOWERS FIELD <br />- KITTIAS COUNTY AIRPORT <br />TAXILANE CONSTRUCTION PROJECT <br />June 3, 2022 <br />Bid <br />Item <br />Description <br />Unit <br />Estimated <br />Quanti <br />Unit <br />Price <br />Total <br />Cost <br />Schedule A - Base Bid - Taxilane <br />1 <br />Mobilization _ _ _ <br />- -- _ _ LS <br />1 <br />$34 000 <br />$$5,000 <br />2 <br />Erosion Control _ _ <br />_ <br />LS <br />1 <br />$5,000, <br />$5,000 <br />_ 3 <br />Contractor's Sta in Area and Restoration <br />g g -_ <br />LS <br />1 <br />_ <br />$15,0001 <br />$15,000 <br />4 <br />Construction SurveyWork <br />LS <br />1 <br />$20 000' <br />$20,000 <br />5 <br />- <br />General Excavation, _Stripping (6") <br />CY <br />_8.00 <br />$25' <br />General Excavation <br />_ <br />CY <br />6 <br />25 <br />$25 <br />__$20,000 <br />$625 <br />Unsuitable Excavation _ <br />_ __ <br />CY <br />7 - <br />760 <br />$30 <br />$22,800 <br />_ <br />Subgrade Stabilization <br />_ <br />CY <br />8 <br />760 <br />_ _ <br />$60' <br />$45,600 <br />_ <br />Embankment in Place(Import) <br />_ <br />CY <br />9 _ <br />_ <br />1,420 <br />340 <br />$60_ <br />$75 <br />_ $85,200 <br />$25,500 <br />10 <br />_ _ <br />3/4 -Inch Aggregate Base (6") CY <br />_ <br />Level 3, 1/2 -Inch Aspahlt Concrete Pavement (3") TON <br />11 <br />365 <br />$125 <br />$45,625 <br />12 <br />Drain System Construction _ <br />Y <br />Permanent Seeding, Mix No. 2 <br />_ LS <br />SY <br />__ SF <br />_ <br />_ <br />2,700 <br />1,350_ <br />$10,000 _ <br />$2 <br />$3 <br />_ $10,000 <br />$5,400 <br />$4,050 <br />_Storm <br />_13 <br />14'PavementMarking(FirstApplication) <br />Pavement Markin Second Application) <br />SF 1 <br />1,350 <br />$3 <br />_ <br />$4,050 <br />Subtotal Schedule A Cost Estimate <br />$342,850 <br />Contingency (10%) <br />$34,285 <br />L <br />Washington State Sales Tax (8.1%) <br />$30,545 <br />Total Schedule A Cost Estimate <br />$407,683 <br />