The URL can be used to link to this page

Home My WebLink AboutCO 3 CAG-18-002 , CO #3-19 1 Y - V Cs, ,. lali'4.+ + '. + + 1 N 1 0 Change Order No. 3 Contract Title: N 27th Place Bridge Scour Repair Project Contractor: SB Structures,LLC Contract No. : CAG 18-002 Federal Aid No. : BHOS-1070(010) - - El Ordered by Engineer D Proposed by the Contractor(VECP) 0 Unilateral - _ Ori!g $444,783 22 inal Contract Amount: Current Contract Amount: $468,383.22 Estimated Net Change This Order: $1,100.00 ,New Contract Amount: . $469,483.22 Prepared By: Issuect,By: ( .f , .f.,.1,40,- Pla,k . 2 IL izA",,5, , ,e pvt. z ---- b.44451 ---,—r' .- Date Engine ((Ay of Renton Transportation ate 6 4> fri /44 t...4.1 r Design Manager) Reviewed By: Consent By: Engineer of Record Date Surety(Greater than 25%cost and/or 20% Da e thn ncrease) Reviewed B , Endorsed , . ity o Rent n " Manager Date Cot tractor te Executed By: Reviewed By' City Attorney(Grea r than$35,000 Date City Re on blic Works ate and/or change in scope) mi istrator/Mayor Change Order No. 3 Contract Title:_ .N 27th Place Bridge 5.„QUr Repairiroiect Contract No. CAG-18-Q02, Page 1 of 5 THE CONTRACT IS MODIFIED AS FOLLOWS: Description of Change: • Delete the following bid items from the contract: o Bid Item No. 35,Topsoil Type A, Quantity= 1 C.Y. o Bid Item No. 37, Plant Selection Acer Circinatum/Vine Maple, Quantity= 12 • Add the following bid items to the contract: o Plant Selection Physocarpus capitatus/Pacific Nine Bark, Quantity= 10 o Plant Selection Ribes sanguineum/Red Flowering Currant, Quantity= 10 o Plant Selection Lavandula/Lavender,Quantity=8 o Plant Selection Rosmarinus officinalis'prostratus'/Rosemary,Quantity=8 o Plant Selection Teucrium chamaedrys/Pink Germander, Quantity=2 • Add quantity to the following bid items to the contract: o Bid Item No. 36, Plant Selection Thuja Plicata/Western Red Cedar,Add Quantity=3 • Delete special provision section 8-02.3(4)A Topsoil Type A. • Replace special provision section 8-02.3(8)A Plant Sizes with the following: 8-02.3(8)A Plant Sizes When the following bid items are included in the Proposal,the plant sizes are as follows: Plant Selection Thuja Plicata/Western Red Cedar: minimum size 1 gallon Plant Selection Physocarpus capitatus/Pacific Nine Bark: minimum size 1 gallon Plant Selection Ribes sanguineum/Red Flowering Currant:minimum size 1 gallon Plant Selection tavandula/lavender: minimum size 1 gallon Plant Selection Rosmarinus officinalis`prostratus'/Rosemary: minimum size 1 gallon Plant Selection Teucrium chamaedrys/Pink Germander:minimum size 1 gallon • Delete special provision section 8-02.4 Measurement. • Replace special provision section 8-02.5 Payment with the following: 8-02.5 Payment Section 8-02.5 is supplemented with the following: Change Order No. 3 Contract Title: 'hPlace Cfridgc Sour l ciM sal c ._ . .. .� Contract No. CAC 002�. Page 2 of 5 "Bark or Wood Chip Mulch", per cubic yard "Plant Selection Thuja Plicata/Western Red Cedar", per each "Plant Selection Physocarpus capitatus/Pacific Nine Bark", per each "Plant Selection Ribes sanguineum/Red Flowering Currant",per each "Plant Selection Lavandula/Lavender", per each "Plant Selection Rosmarinus officinalis'prostratus'/Rosemary", per each "Plant Selection Teucrium chamaedrys/Pink Germander",per each Reason for Change: Some of the work was located within a native growth protection easement. Prior to clearing and grubbing, the existing ravine had established cottonwoods in the immediate vicinity of the culvert. Invasive species were also present within the clearing and grading limits, most notably Himalayan blackberry.The steep slopes of the ravine are an erosion hazard with the existing plants providing slope stability.Therefore,complete removal of the invasive species would require extensive landscaping and erosion control measures that would need to be maintained for many years.This was not viewed as very feasible given the steep slopes of the ravine. In order use a crane to deliver material and equipment to the culvert,the cottonwoods had to be cut down.The stumps were left in the ground because the extensive roots support the ravine slopes.The cottonwoods will very likely start to grow again with their roots continuing to support the steep slopes.With the additional sunlight,the Himalayan blackberry would potentially overwhelm the vine maples due to a faster growth rate.Additionally, dry summer conditions result in dry soil conditions along the slopes of the ravine. As a result, the City decided to replace the Vine Maples with Pacific Nine Bark and Red Flowering Current which will have a better chance of competing with the Himalayan blackberry and can get established quickly to survive dry conditions next summer. Upon completion of major construction activities and cleanup of the site, the neighborhood HOA was contacted to review conditions in an area of the native growth protection easement that the HOA has landscaped.This area resides with the HOA donated Temporary Construction Easement(TCE)for the project.This area was disturbed by construction activities. Originally, the City anticipated placing bark or wood chip mulch over disturbed areas. However,the HOA did not want this as the landscapers who maintain the area for the HOA would likely blow the bark back into the ravine. Instead the HOA requested plants including Lavender,Rosemerry and Pink Germander be placed in the disturbed areas.The City agreed to do so in lieu of placing bark. Topsoil Type A was removed from the contract since the existing native soil is sufficient for planting and plant establishment. Change Order No._ Contract Title: tn�tepairProject Contract No._CA -1B-tlC:__,__ Page 3 of Materials: • Physocarpus capitatus/Pacific Nine Bark, Quantity= 10 • Ribes sanguineum/Red Flowering Currant, Quantity= 10 • Lavandula/Lavender,Quantity=8 • Rosmarinus officinalis 'prostratus'/Rosemary, Quantity=8 • Teucrium chamaedrys/Pink Germander, Quantity=2 Plans: No changes were made to the drawings. Adjustment: This Change Order includes changes as defined in Section 1-04.4. Specifically,the deletion of work, altering specifications(e.g.changing plant types)and increased quantities.The estimated cumulative total cost of these changes is$1,100. Extension of Time: The Time for Completion is extended 0 Working Days Equitable Adjustment: This Change Order does not include an equitable adjustment for any of the bid items deleted or added to the contract by this change order. Prior to the Work, the City and Contractor agreed to replace and/or add plants using the unit prices in the original bid,which was the same for both plants listed in the original bid. i r ,...---PIFWKI r°r M9L ,—L1LAd Change Order No. 3 Contract Title: a_N 27th Place Bridge5Qur Contract No._____CAtatjAIQL Page 4 of 5 Sections 1-04.4 and 1-04.5 of the 2016 WSDOT/APWA Standard Specifications shall govern this Change Order.The Work of the referenced Contract Is modified to include the changes detailed herein.The payment provided for herein shall constitute the complete and final settlement for all costs of labor,equipment,materials,overhead,profit,permit fees, and all other claims that may be made by the Contractor as a result of this change. Attachments: Forms to be attached to Change Order 0 Plans 0 Field Directive O Change Order Quotation O Estimated Change Order Cost • Project Labor List O Force Account Equipment Rate Request(DOT Form 422-010 EF) O Equitable Adjustment Determination Forms to be used during Force Account Work O Daily Report of Force Account Labor 0 Daily Report of Force Account Equipment El Daily Report of Force Account Materials • Force Account Summary �_. .--13L a.,ts.:,L w Change Order No. 3 Contract Title: N 27th Place DridimabikrbliMiliPliQjta_ Contract No. CA 8.402 ._, Page 5 of S Estimated Change Order Cost Change Order No. 3 Bid Item No. Description Quantity Unit Unit Price Estimated Cost Force Account Item description Labor Estimate $ Labor Markup 29% $ Equipment Estimate $ Equipment Markup 21% $ Materials Estimate _ $ - Materials Markup 21% $ - Services Estimate $ _—m., Services Markup 21% $ Mobilization Estimate $ Subcontractor Work Estimate $ Subcontractor Markup 12%,10%,7% $ Bid Item Change 35 TOPSOIL TYPE A -1 C.Y. $ 100.00 $ (100.00) 36 PLANT SELECTION THUJA PLICATA/ -12 EACH $ 40.00 $ (480.00) WESTERN RED CEDAR 37 PLANT SELECTION ACER CIRCINATUM/VINE 12 EACH $ 40.00 $ (480.00) MAPLE 3 01 PLANT SELECTION PHYSOCARPUS 10 EACH $ 40.00 $ 400.00 CAPITATUS/PACIFIC NINE BARK 3 02 PLANT SELECTION RIBES SANGUINEUM/RED 10 EACH Y $ 40.00 $ 400.00 FLOWERING CURRANT 3-03 PLANT SELECTION LAVANDULA/LAVENDER 8 EACH $ 40.00 $ 320.00 3 04 PLANT SELECTION ROSMARINUS 8 EACH $ 40.00 $ 320.00 OFFICINALIS'PROSTRATUS'/ROSEMARY 3-05 PLANT SELECTION TEUCRIUM 2 EACH $ 40.00 $ 80.00 CHAMAEDRYS/PINK GERMANDER 3 06 PLANT SELECTION THUJA PLICATA/ 15 EACH $ 40.00 $ 600.00 WESTERN RED CEDAR Equitable Adjustment Per attached determination Estimate $ Calculated Cost $ 1,060.00 Estimated Change Order Cost $ 1,100.00