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Home My WebLink AboutTIS 2022-04-04 Item 2C - Change Order #1 - Riverton Creek Flapgate Removal with AtWork Commercial EnterprisesCity of Tuft wila Allan ElOaog. vkapar 5.1L�,o1. 1.5"•2'A: 91Lull @vv,'Y. 1-141 .&%II•.7Ln°LiiI1 L11'1`ti1-•S1. 1i:i tWi;5i11{'Lr INFORMATIONAL MEMORANDUM TO: Transportation and Infrastructure Services Committee Meeting FROM: Hari Ponnekanti, Public Works Director/City Engineer BY: Mike Perfetti, Senior Surface Water Project Manager CC: Mayor Ekberg DATE: April 1, 2022 SUBJECT: Riverton Creek Flapgate Removal Project Project No. 99830103, Contract No. 20-075 Change Order No.1 ISSUE Approve Change Order No. 1 to Contract 20-075 with AtWork! Commercial Enterprises, LLC of Bellevue, WA. BACKGROUND At Work! Commercial Enterprises is nearing completion of the initial clearing, planting and 1 -year maintenance period associated with the Riverton Creek Flapgate Removal Project, Phase 2. This phase restored 1.48 acres of native riparian vegetation along Riverton Creek and 0.45 acres along the Duwamish River. DISCUSSION To protect this investment, enable success, and meet grant commitments, the City will maintain the restoration work for a 10 - year period. Generally, the first 3 or so years are the most critical periods of plant establishment, where plants need supplemental water and weed control to survive and outcompete invasive, non-native plants such as Himalayan Blackberry and Reed Canary grass. Change Order No. 1 will increase the contract amount and provide a two-year contract extension ending on April 30, 2024, which will allow AtWork! to provide restoration during this critical establishment period. FISCAL IMPACT (All amounts include sales tax) The Riverton Creek Flap Gate Removal Project construction, including both phases, was initially budgeted at $918,000. The low bid for the first phase, which was recently awarded, exceeded the budget and is utilizing all CIP funds dedicated for this project. The initial AtWork! contract was funded through Surface Water Utility Funds transferred from the 205 Levee Certification CIP and WRIA 9/CWM grant funds. Change order No. 1 includes additional compensation of $57,031.80, raising the tax -inclusive contract total to $163,122.40. This compensation will utilize project contingency allocated in the initial contract and the remainder from the 2022 CIP of the Green the Green Program CIP. The City has a pending no -match grant application for $40,000 to assist with funding this work. Contract Amount Fund Source Budget Initial Contract $106,090.60 205 Levee CIP $66,669.66 Change Order No. 1 $57,031.80 Green the Green CIP 46,452.74 WRIA 9/CWM Grant 50 000.00 Total $163,122.40 $163,122.40 RECOMMENDATION Council is being asked to approve Contract 20-075 Change Order No. 1 for the Riverton Creek Flap Gate Removal Project Restoration Phase II to AtWork Commercial Enterprises, LLC in the amount of $57,031.80 and consider this item on the Consent Agenda at the April 18, 2022 Regular Meeting. Attachments: 2021 CIP Pages 82,86,96 Change Order No. 1 https://tukwilawa.sharepoint.com/sites/publicworks/engineering/PW Drop Box/01 TIC Agenda/2022 Agenda Items/TIC 04-04-22/3. Riverton Creek Ch Order No1/Info Memo for CO#1.docx 21 CITY OF TUKWILA CAPITAL PROJECT SUMMARY 2021 to 2026 PROJECT: Green the Green Program Project No. 91641202 DESCRIPTION: Interdepartmental effort to provide trees along the Green River and its tributaries in order to provide shade and cooler water temperatures to threatened salmon and steelhead. JUSTIFICATION: WRIA 9 has identified warm water temperatures as an impediment to salmon recovery, and has also started a funding program called, "ReGreen the Green" which aims to support revegetation projects along the river. STATUS: CIP utilized for restoration at NC Machinery & Southcenter Plaza. Planting completed and maintenance began in 2020. Other opportunities are being identified in a collaborative effort between Public Works and DCD. MAINT. IMPACT: Expected to increase maintenance. COMMENT: Grant funding ongoing. Funding to date has come from WRIA9, King Co., and the Rose Foundation. FINANCIAL Through Estimated (in $000's) 2019 2020 2021 2022 2023 2024 2025 2026 BEYOND TOTAL EXPENSES . j t Location il. i. I 15. zill.s' �li .. ' r 'I .i% 5 7 � e \ � a � S ,'7 \ R Design 30 5 20 5 20 5 20 5 30 140 Land (R/W) 5 5 3 5 18 Monitoring 10 20 20 30 30 20 45 45 220 Const. Mgmt. 2 7 20 20 20 20 89 Construction 45 136 100 100 100 100 581 TOTAL EXPENSES 77 158 45 145 55 155 40 173 200 1,048 FUND SOURCES Awarded Grants KC 19 113 132 Proposed Grants 50 50 50 50 200 Rose Foundation 13 12 25 Mitigation Expected 0 City Oper. Revenue 45 33 45 95 55 105 40 123 150 691 TOTAL SOURCES 77 158 45 145 55 155 40 173 200 1,048 2021 - 2026 Capital Improvement Program 82 22 . j t Location il. i. I 15. zill.s' �li .. ' r 'I .i% 5 7 � e \ � a � S ,'7 \ R � • • I �,.,�� . J . Ii 1 I j k I 4,1 J. e _ M1 ' 'Y_72 I. zei X Al -- __ •I :3 :AIM 111 1, aR 'S:.. 2021 - 2026 Capital Improvement Program 82 22 CITY OF TUKWILA CAPITAL PROJECT SUMMARY 2021 to 2026 PROJECT: Tukwila 205 Levee Certification Project No. 91341203 DESCRIPTION: Reconstruct the Tukwila 205 Levee to provide 500 -year level of flood protection and obtain levee certification. The US Army Corps of Engineers no longer provides levee certification services to federally authorized levees. The existing certification expired in August 2013. Certification is required for the Federal Emergency JUSTIFICATION: Management Agency to accreditate the levee system as providing a 100 -year level of flood protection. A study of the Tukwila 205 Levee found approximately 80% of the levee could not be certified in its current condition and will require repair or reconstruction. STATUS: A levee assessment has been completed. MAINT. IMPACT: Certification process is expected to lead to additional levee repair projects that are required to meet the certification criteria. Certification is valid for a 10 -year period. The City has petitioned the King County Flood Control District to make levee improvements to upgrade the 205 Levee to provide a minimum of 100 -year level of protection, and where construction is needed, construct to a COMMENT: 500 -year level of protection. KCFCD has agreed to begin design of several projects in 2020, which will take approximately 15 years to complete and will require extensive work with the City of Tukwila and property owners. A full time employee to monitor this project will be required and listed in 2021 through 2026. FINANCIAL Through Estimated (in $000's) 2019 2020 2021 2022 2023 2024 2025 2026 BEYOND TOTAL EXPENSES Certification Phase 1 350 350 Certification Phase II 229 500 500 500 500 500 500 3,229 Design 0 Const. Mgmt. 150 150 150 150 600 Construction 0 TOTAL EXPENSES 579 0 500 500 650 650 650 650 0 4,179 FUND SOURCES KC Flood Control 236 150 150 150 150 836 Proposed Grants 0 Mitigation Actual 0 Mitigation Expected 0 Utility Revenue 343 0 500 500 500 500 500 500 0 3,343 TOTAL SOURCES 579 0 500 500 650 650 650 650 0 4,179 Project Location: Enters, Sm 2021 - 2026 Capital Improvement Program 86 23 rage PROJECT TITLE City of Tukwila CAPITAL IMPROVEMENT PROGRAM for 2021 - 2026 SURFACE WATER 412 Fund --utner Atter Six 2021 2022 2023 2024 2025 2026 TOTAL Sources Years 78 Annual Small Drainage Program 900 900 900 900 970 970 5,540 0 673 79 Storm Water Quality Retrofit Program 115 3,314 105 105 110 105 3,854 2,160 115 80 NPDES Program 100 50 55 55 60 60 380 110 65 81 WRIA 9 Watershed Planning 20 21 21 21 22 23 128 87 23 82 Green the Green Program 45 145 55 155 40 173 613 150 200 83 Surface Water Monitoring 35 37 37 38 38 39 224 0 39 84 East Marginal Wy S Stormwater Outfalls 1,276 0 0 0 0 0 1,276 842 0 85 Gilliam Creek Fish Barrier Removal 936 536 405 5,952 2,400 0 10,229 7,076 0 86 Tukwila 205 Levee Certification 500 500 650 650 650 650 3,600 600 0 87 Nelsen Side Channel 225 240 1,825 0 0 0 2,290 1,550 0 88 Surface Water Comprehensive Plan 200 0 0 0 0 0 200 0 250 89 S 131st PI Drainage Improvements 150 1,000 0 0 0 0 1,150 250 0 90 Riverton Creek Flap Gate Removal 55 0 0 0 0 0 55 50 0 91 Chinook Wind Public Access 59 357 0 0 0 0 416 137 0 92 Surface Water GIS Inventory 0 100 0 150 0 0 250 0 0 93 Northwest Gilliam Storm Drainage System 0 100 840 0 0 0 940 0 0 94 Tukwila Pkwy/Gilliam Creek Outfalls 0 0 60 415 0 0 475 0 0 S 146th St Pipe & 35th Ave S Drainage 0 0 0 0 0 0 0 0 1,066 Soils Reclamation Facility 0 0 0 0 0 0 0 0 1,375 S 143rd Street Storm Drainage System 0 0 0 0 0 0 0 0 1,096 Nelsen PI/Longacres Surface Water Phase II 0 0 0 0 0 0 0 0 345 Duwamish Rvrbk Stabilization at S 104th St 0 0 0 0 0 0 0 0 595 TUC Surface Water Conveyance 0 0 0 0 0 0 0 0 541 Grand Total 4,616 7,300 4,953 8,441 4,290 2,020 31,620 13,012 6,383 Changes from 2019 to 2021 CIP: Additions 83 Surface Water Monitoring 25 "* Denotes other funding sources, grants, or mitigation. Project sheets scheduled beyond 2026 can be found in the City's website under Public Works Capital Improvement Program. Surface Water Lift Station Locations Storm Lift Station No. 15 Storm Lift Station No. 16 Storm Lift Station No. 17 Storm Lift Station No. 18 Storm Lift Station No. 19 5910 S 180th St - Mizuki Grill 7420 S 180th St (underpass) 530 Strander Blvd - Bicentennial Park 4225 S 122nd St - Allentown Fort Dent Park (Parks Dept.) 2021 - 2026 Capital Improvement Program 77 30/2022 Sheet 1 of 1 CITY OF TUKWILA CONTRACT CHANGE ORDER NO. 1 DATE: February 24, 2022 BUDGET NO.: 412.98.594.382.65.00 PROJECT NO.: 99830103 CONTRACT NO.: 20-075 PROJECT NAME: Riverton Creek Flapgate Removal Project Phase 2 TO: At Work! Commercial Enterprises You are hereby directed to make the herein described changes to the plans and specifications or do the following described work not included in the plans and specifications on this contract: NOTE: This change order is not effective until approved by the "Owner" and a notice to proceed is issued. Conditions: A. The following change, and work affected thereby, are subject to all contract stipulations and covenants; B. The rights of the "Owner" are not prejudiced; C. All claims against the "Owner" which are incidental to or as a consequence of this change are waived; and D. The Contractor must submit all Field Overhead and Home Office Overhead Rates for approval in advance of all change orders. CHANGE: See Attached Exhibit "A" We the undersigned Contractor, have given careful consideration to the change proposed and hereby agree, if this proposal is approved, that we will provide all equipment, furnish all materials, except as may otherwise be noted above, and perform all services necessary for the work above specified, and will accept as full payment therefore the prices shown above and below. ACCEPTED: Date Contractor By Title Original Contract (without tax) $ 96,446.00 APPROVED BY THE CITY OF TUKWILA Previous Change Order $ NA Date This Change Order (without tax) $ 51,800.00 By Mayor REV. CONTRACT AMOUNT $ 148,246.00 Original Contract Time: ended April 30, 2022 Additional Contract Time for this Change Order: 2 years Updated Contract Time: April 30, 2024 City Engineer ORIGINAL: City Clerk (1 of 2) Contractor (2 of 2) PW Project Finance File cc: Finance Department (w/encumbrance) Project Management File 25 (11/2014) EXHIBIT "A" CHANGE: 2 years of restoration maintenance Provide weed control of blackberry, Reed Canary Grass, Knotweed, Ivy, Black Hawthorne, and any other invasive weeds growing in the buffer. Perform weed control three times per year or as needed, typically in spring, late summer and fall. Weed control methods will include minimizing competing grasses and invasive vegetation throughout the buffer especially 3 feet surrounding each plant by spraying an approved herbicide and/or mechanical weeding. Adaptive Management At the direction of the Engineer, the Contractor will procure, install and maintain, within the project area native plants to fill in gaps or respond to changing site conditions. This item will be paid on a time and materials basis not to exceed $5,000, plus 10.1% sales tax. COST AND TIME CONSIDERATIONS: The scope of services are valued at $51,800.00 plus $5,231.80 in taxes for a total of $57,031.80. Extend the contract by two years, ending on April 30, 2024. 26 Atwork! Commercial Enterprise LLC Headquarters: 1935 152nd PI Ne Bellevue, WA 98007 Operations Center: 690 NW Juniper Street Issaquah WA 98027 (425) 274-4026, (206) 434-6623 Contract Extension Proposal City of Tukwila Johnsl (a�atworkwa.orq 2/27/2022 RIVERTON CREEK FLAPGATE REMOVAL PROJECT Contract Extension Project No. 99830103 Scope of Work for Maintenance Contract Extension 2 year extension of existing contract (May 2022 to April 2024) Invasive Weeds Maintenance Provide weed control of blackberry, Reed Canary Grass, Knotweed, Ivy, Black Hawthorne, and any other invasive weeds growing in the buffer. Perform weed control three times per year or as needed, typically in Spring, late Summer, Fall. Weed -control methods will include minimizing competing grasses and invasive vegetation throughout the buffer especially 3 feet surrounding each plant by spraying an approved herbicide and/or mechanical weeding. Watering Provide watering for newly installed plantings as needed. Watering to include all costs including labor, equipment, water meter and its costs, water use charges. Litter Control Remove litter and debris from the work areas two time per year, once in the spring/summer and once in summer/fall. Haul off and dispose. Pricing $20,900.00 Per Year - plus appropriate taxes 27