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Home My WebLink AboutCO 4 CAG-15-148, CO 4 CITY OF RENTON PUblic tNorks Department COI�TRA.CT CHAf�GE ORDER AGREEMENT CONTRACT: CAG-15-148 Maplewood Creek Stormwater Outfall Improvements Project C.O.# 4 SW P-27-3617 CO�ITR,ACTOR: Qlson Brothers Excav>ating, Inc. SUMt`/IARY OF PROPOSED CHA�16E: Adjustmerrt for actual bid item quantiti.es The Maplewaod Creek Stormwater Outfall Improvements Project contract amount is being adjusted to account for the actual quantity of material and unit bid items used in completion of the contract scope of work,v+rhich exceded the contract estimated quantit�of unit bid items.The chang,e in unit bid item quantities occurred in part from an increase in utilit�potholing, HM�#at�erla}�,and additianal cement concrete curb and gutter restaratian. Other bid items�nrere dete�rmined to be either greater,belar�,or equal to the�eontract''s es.timated bid quantitk amount. If a bid item�ras indicated as,a unrt of lump sum,no adjustment�nras. p.ra�ided. Measucet�eetts of payrx�.ent were detecmined foLlowing the S:pecial Pr.avisi.on.l-09 Measur.eri�ea�a,nd Payment within the Contract Documents.Adjustments of alt unit bid item quanities within 5chedule of Prices are sho�nrn on the attached spreadsheet.The change in unit bid item quantities and payment will be reflected in each bid item total quantity in the final pa�+estimat�e. The final�adjustment in costs are indicated below. TOTAL CHANGE ORDER COST= $30,292.10 Additional Working Days added ta the Contract for this Change Order: 0_ ORIGINAI.CONTRACT AMQUNT CURRENT CONTRkCT P;MOUNT ESl"IMA,TED NET CHdNGE ESTIMaTED CONTRRCT THIS OROER TOT!tiL AFTER:CHt1NGE $4d4,005.00 5��4,424•37 $30,242.10 $504,�16.47 SI G N ATU RES: Contr.actar: �\ aate: 4 �� Project Engineer: Date: i �� 0 Approved Bq: Date: -{Utility iystems Dicec'r} / Approved By: Date: ' �f ( ubI Works d INstretor) H:\File Sys�VWP-Surface Water Projects�SWP-27-wrface Water Projects(CIP)l,27<361a�Napfewood Creek-OutFa11�1600 ConsYrucYion�1606 Change Orders\CO-4 amdendment of bid quantities�2017-0807 CO-4.doc�OCmc Maplewood Creek Stormwater Outfall Improvements Project CAG-15-148 03-Aug-17 Change Order: 4 SWP-27-3617 B.Tan Estimated Contract Actual Actual Contract Change in Bid Item Quantity Unit Unit Price Amount Quantity Amount Contract Amount Mobilization& Demobilization 1 LS $ 35,000 $ 35,000.00 1 $ 35,000.00 $ - Minor Change 1 EST $ 20,000 $ 20,000.00 0.506865 $ 10,137.30 $ 9,862.70 Construction Surveying, Staking, and As-Built 1 LS $ 4,000 $ 4,000.00 1 $ 4,000.00 $ - Utility Potholing 17 EA $ 900 $ 15,300.00 34 $ 30,600.00 $ (15,300.00) Temporary Traffic Control 1 LS $ 20,000 $ 20,000.00 1 $ 20,000.00 $ - Clearing and Grubbing 135 SY $ 25 $ 3,375.00 135 $ 3,375.00 $ - Removal of Structures and Obstructions � LS $ 15,000 $ 15,000.00 1 $ 15,000.00 $ - Sawcutting 2100 LF $ 3 $ 6,300.00 2100 $ 6,300.00 $ - Removal and Replacement of Unsuitable Foundation Material 75 Ton $ 31 $ 2,325.00 0 $ - $ 2,325.00 Controlled Density Fill 20 CY $ 150 $ 3,000.00 20 $ 3,000.00 $ - Final Cleanup and Restoration 1 LS $ 3,000 $ 3,000.00 1 $ 3,000.00 $ - Construction Geotextile for Soil Stabilization 150 SY $ 14 $ 2,100.00 0 $ - $ 2,100.00 Crushed Surfacing Top Course 150 Ton $ 30 $ 4,500.00 201.14 $ 6,034.20 $ (1,534.20) HMA for Pavement Repair,Class 1/2" PG 64-22 100 Ton $ 190 $ 19,000.00 235.97 $ 44,834.30 $ (25,834.30) HMA for Overlay,Class 1/2" PG 64- 22 350 Ton $ 165 $ 57,750.00 323.17 $ 53,323.05 $ 4,426.95 Furnish and Install 12-inch CPEP Storm Drain Pi e 315 LF $ 50 $ 15,750.00 315 $ 15,750.00 $ - Furnish and Install 12-inch DI Storm Drain Pi e 245 LF $ 75 $ 18,375.00 245 $ 18,375.00 $ - Furnish and Install 15-inch CPEP Storm Drain Pi e 275 LF $ 60 $ 16,500.00 275 $ 16,500.00 $ - Furnish and Install 18-inch CPEP Storm Drain Pi e 215 LF $ 70 $ 15,050.00 211 $ 14,770.00 $ 280.00 Temporary Storm Bypass System 1 LS $ 2,000 $ 2,000.00 1 $ 2,000.00 $ - Connect Existing Storm Drain to New SDMH 2 EA $ 3,000 $ 6,000.00 2 $ 6,000.00 $ - Furnish and Install Type-1 Catch Basin 10 EA $ 1,200 $ 12,000.00 10 $ 12,000.00 $ - Furnish and Install Type-2 Catch Basin 48" Diam. 4 EA $ 3,300 $ 13,200.00 4 $ 13,200.00 $ - Trench Excavation Safety Systems 1 LS $ 2,500 $ 2,500.00 1 $ 2,500.00 $ - Temporary Dewatering 1 LS $ 3,000 $ 3,000.00 1 $ 3,000.00 $ - Select Imported Trench Backfill 1600 Ton $ 20 $ 32,000.00 1437.9 $ 28,758.00 $ 3,242.00 Post Storm Drain Installation Ins ection 1135 LF $ 1 $ 1,135.00 698 $ 698.00 $ 437.00 Cut in 6-inch Gate Valve Assembly 2 EA $ 2,200 $ 4,400.00 2 $ 4,400.00 $ - Furnish and Install 16-inch HDPE Storm Drain 40 LF $ 312 $ 12,480.00 37 $ 11,544.00 $ 936.00 Maplewood Creek Stormwater Outfali Improvements Project CAG-15-148 03-Aug-17 Change Order:4 SWP-27-3617 B. Tan Estimated Contract Actual Adual Contract Change in Bid Item Quantity Unit Unit Price Amount Quantity Amount Contract Amount Furnish and Install 24-inch HDPE Storm Drain 45 LF $ 500 $ 22,500.00 44 $ 22,000.00 $ 500.00 Energy Dissipator Outfall Structure � LS $ 24,000 $ 24,000.00 1 $ 24,000.00 $ - Existing Side Sewer Relocation 3 EA $ 2,600 $ 7,800.00 4 $ 10,400.00 $ (2,600.00) Temporary Erosion and Sediment/Water Pollution Control 1 LS $ 7,500 $ 7,500.00 1 $ 7,500.00 $ - Seeding, Fertilizing and Mulching 50 SY $ 3 $ 125.00 60.5 $ 151.25 $ (26.25) Topsoil Type C 10 CY $ 50 $ 500.00 6.7 $ 335.00 $ 165.00 Erosion Control Blanket 100 SY $ 9 $ 900.00 100 $ 900.00 $ - Cement Concrete Curb and Gutter Restoration 60 LF $ 95 $ 5,700.00 163.6 $ 15,542.00 $ (9,842.00) Chain �ink Fence,Type 3 � LS $ 3,100 $ 3,100.00 1 $ 3,100.00 $ - Remove and Restore Monument 3 EA $ 1,900 $ 5,700.00 3 $ 5,700.00 $ - Rip Rap 2� Ton $ 57 $ 1,140.00 10 $ 570.00 $ 570.00 Change Order#1-working days Extension 0 $ - $ - 0 $ - $ - Change Order#2-planting time extension 0 $ - $ - 0 $ - $ - Change Order#3 Side Sewer Conflict � LS $ 30,419.37 $ 30,419.37 1 $ 30,419.37 $ - Total Contract Amount $ 474,424.37 $ 504,716.47 $ (30,292.10)