The URL can be used to link to this page

Home My WebLink AboutTIS 2025-08-25 Item 1A - Bid Award - 2025 Annual Small DrainageThomas McLeod, Mayor Public Works Department - Jen Tetatzin, PE, PMP - Director INFORMATIONAL MEMORANDUM TO: Transportation and Infrastructure Services Committee FROM: Jen Tetatzin, Public Works Director BY: Josh Hopkins, Surface Water Project Manager CC: Mayor Thomas McLeod DATE: August 14, 2025, SUBJECT:Surface Water Fund - 2025 Annual Small Drainage Program Project No. 82541201 Construction Bid Award ISSUE Council is being asked to award a construction contract in the amount of $352,692.90 to Flowline, LLP to construct the 2025 Annual Small Drainage Program project. BACKGROUND The Small Drainage Program constructs drainage projects throughout the City that are too large for City staff to complete but are smaller than a typical capital improvement project. The projects originate from citizen complaints and maintenance staff recommendations and are compiled on the Small Drainage Project List. Each year the projects are prioritized based on need, expense, permitting requirements, and length of time on the list. The highest priority projects are then designed and constructed. The 2025 Annual Small Drainage Program includes three locations as noted in the attached vicinity map and will improve roadside drainage conveyance and water quality improvements at the 40th Ave S/42nd Ave S location. DISCUSSION The 2025 Annual Small Drainage Program was advertised for bids on July 30 and August 6, 2025. Five bids were received and opened on August 14, 2025. The bids were checked, tabulated, and no errors were found. Flowline, LLP, is the apparent low bidder with an overall bid of $352,692.90 including sales tax and is 15.6% below the engineer's estimate of $418,188.06. This contractor has not worked for the City before. Psomas, construction management consultant, and City staff analyzed and reviewed their bid and Psomas spoke directly with Flowline and felt comfortable moving forward. BUDGET AND BID SUMMARY (All amounts include sales tax) The project construction budget of $750,000 is sufficient to cover the costs for the contract with contingency. The project is funded through the Surface Water Enterprise Fund. Bid Results Engineer's Estimate Contract $352,692.90 $418,188.06 Contingency (10%) $35,269.29 Total $387,961.49 2025 Budget $ 750,000.00 RECOMMENDATION Council is being asked to award a construction contract to Flowline, LLP, in the amount of $352,692.90 plus contingency to construct the 2025 Annual Small Drainage Program and consider this item on the Consent Agenda at the August 25, 2025 Special Council Meeting. ATTACHMENTS: 2025 CIP Pg 142, Vicinity Map, Bid Tabulations, Psomas Recommendation of Award Letter CITY OF TUKWILA CAPITAL PROJECT SUMMARY 2025 to 2030 PROJECT: S 131 st Pt Drainage Improvements Project# 91641204 Project Manager Joshua Hopkins Department Surface Water DESCRIPTION: JUSTIFICATION: STATUS: MAINTENANCE IMPACT: COMMENT: FINANCIAL (in thousands) Developing alternate horizontal alignment for Southgate Creek in conjunction with replacing a fish barrier culvert. Scope expanded in 2024 to increase hydraulic analysis limits to address persistent flooding not addressed with the preliminary hydraulic design. Southgate Creek overtops its bank several times per year during storm events and runs through private property. Debris is deposited within a private driveway and storm system. HPA permitted dredging is performed annually on the creek to remove excess sedimentation to reduce the likelihood of flooding. Project will include 1-year contract maintenance and typically 2-to-4 years of plant establishment. Project improvements will be turned over to surface water division for routine maintenance. Project applied for Department of Ecology design development funding and Conservation Futures property acquisition grant to support the expanded hydraulic analysis. Assumes estimated 2028 construction. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Planning Land (R/W) Construction Mgmt. Construction $ 25 $ 780 $ 1,000 $ 25 $ 600 $ 1,000 $ 25 $ 400 $ 2,000 Total Project Costs $ 1,805 $ 1,625 $ 2,425 $ 75 $ 1,380 $ 2,000 $ 400 $ 2,000 $ 5,855 Project Funding Awarded Grant Proposed Grant Utility Revenues $ 706 $ 1,105 $ 205 $ - $ 1,625 $ - $ - $ 1,600 $ 825 $ 706 $ 4,330 $ 1,030 Total Project Funding $ 2,016 $ 1,625 $ 2,425 $ 6,066 2 2025 SMALL DRAINAGE PROGRAM PROJECT NO. 82541201 MAYOR THOMAS MCLEOD DIRECTOR OF PUBLIC WORKS JEN TETATZIN, P.E. CITY COUNCIL TOSH SHARP, COUNCIL PRESIDENT ARMEN PAPYAN HANNAH HEDRICK DENNIS MARTINEZ MOHAMED ABDI JOVITA MCCONNEL VERNA SEAL SCHEDULE OF DRAWINGS SHEET TITLE 1 COVER 2 LEGEND & ABBREVIATIONS 3-4 SURVEY CONTROL 5-9 DETAILS 10 MACADAM RD S (SOUTH OF S 144TH ST) — STORMWATER PLAN AND PROFILE 11 MACADAM RD S (NORTH OF S 144TH ST) — STORMWATER PLAN AND PROFILE 12 40TH AVE S — SITE PREPARATION & TESC PLAN 13 40TH AVE S — STORMWATER PLAN AND PROFILE 14 40TH AVE S — REVEGETATION PLAN PZJBLTC WORKS TIEPT_ aENGNEERING aSTREETS aWATERa SE WERaBUILDING a, designed dial ohcckad proj en0 proj dir field bk no bT 3CC 3CC (DA date 07/25 07/25 07/25 PSOMAS 3131 ELLIS, AVENUE, SUITE 400 SEATTLE, INA 98121 206 2861640 BID DOCUMENTS 4DTH AVE S *1714w • remillIMI iwidt Wan Airim CALL 2 DAYS BEFORE YOU DIG 811 2025 SMALL DRAINAGE PROGRAM COVER MACADAM RD S NORTH MACADAM RD S SOUTH 1 14 file no 91MOMMOCOMDVG seal 1' = 40.00' no date revisions dat C7/2025 W City of Tukwila 2025 Small Drainge Program City of Tukwila Project Number: 82541201 Bid Tabs 8/14/2025 Bids opened August 14, 2025, 10 AM Engineer's Estimate Flowline Harkness Construction NW Cascade Inc. RCNW Inc. RW Scott Construction Co. No. SCHEDULE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Item Description Qty Unit A Unit Price $9,000.00 $6,500.00 $1,500.00 $26,000.00 $26,000.00 $9,000.00 $8,500.00 $80.00 $400.00 $2.00 $62.00 $200.00 $40.00 $8,000.00 $5,000.00 $80.00 $80.00 $16.00 $3,000.00 $20.00 $22.00 $3,000.00 $118.00 $145.00 $180.00 $220.00 $3,000.00 $6,000.00 $2,000.00 $2,500.00 $750.00 $750.00 $68,000.00 $14,000.00 $200.00 $800.00 $6,000.00 Amount $ 9,000.00 $ 6,500.00 $ 1,500.00 $ 26,000.00 $ 26,000.00 $ 9,000.00 $ 8,500.00 $ 3,200.00 $ 2,400.00 $ 4,600.00 $ 9,920.00 $ 10,400.00 $ 3,680.00 $ 8,000.00 $ 5,000.00 $ 3,520.00 $ 4,000.00 $ 4,480.00 $ 3,000.00 $ 5,500.00 $ 7,436.00 $ 6,000.00 $ 21,240.00 $ 48,285.00 $ 7,380.00 $ 2,640.00 $ 18,000.00 $ 6,000.00 $ 6,000.00 $ 2,500.00 $ 2,250.00 $ 3,750.00 $ 68,000.00 $ 14,000.00 $ 1,800.00 $ 4,000.00 $ 6,000.00 Unit Price $ 9,000.00 $ /0,000.00 $ 1,500.00 $ 5,000.00 $ /5,000.00 $ 5,000.00 $ 7,000.00 $ 75.00 $ /00.00 $ 0.50 $ 40.00 $ 300.00 $ /00.00 $ 5,000.00 $ /00.00 $ 30.00 $ 30.00 $ /2.00 $ 3,000.00 $ /2.00 $ 7.00 $ 500.00 $ 150.00 $ 140.00 $ 60.00 $ /00.00 $ 1,500.00 $ 4,500.00 $ 500.00 $ 2,500.00 $ 1,500.00 $ 2,000.00 $ /00,000.00 $ 2,000.00 $ /00.00 $ /00.00 $ 6,000.00 Amount $ 9,000.00 $ 10,000.00 $ 1,500.00 $ 5,000.00 $ 15,000.00 $ 5,000.00 $ 1,000.00 $ 3,000.00 $ 600.00 $ 1,150.00 $ 6,400.00 $ 15,600.00 $ 9,200.00 $ 5,000.00 $ 100.00 $ 1,320.00 $ 1,500.00 $ 3,360.00 $ 3,000.00 $ 3,300.00 $ 338.00 $ 1,000.00 $ 27,000.00 $ 46,620.00 $ 2,460.00 $ 1,200.00 $ 9,000.00 $ 4,500.00 $ 1,500.00 $ 2,500.00 $ 4,500.00 $ 10,000.00 $ 100,000.00 $ 2,000.00 $ 900.00 $ 500.00 $ 6,000.00 Price $ 9,000.00 $ 9,000.00 $ 1,500.00 $ 105,000.00 $ 20,000.00 $ 52,000.00 $ 60,000.00 $ /00.00 $ /00.00 $ 7.00 $ 35.00 $ 200.00 $ 15.00 $ 30,000.00 $ 5,000.00 $ 50.00 $ 50.00 $ /0.00 $ 3,000.00 $ 5.00 $ /0.00 $ 400.00 $ 220.00 $ 250.00 $ 220.00 $ 280.00 $ 3,000.00 $ /0,000.00 $ 3,000.00 $ 7,000.00 $ 7,000.00 $ 1,000.00 $ 85,000.00 $ 5,000.00 $ 60.00 $ 7,000.00 $ 6,000.00 Amount $ 9,000.00 $ 9,000.00 $ 1,500.00 $ 105,000.00 $ 20,000.00 $ 52,000.00 $ 60,000.00 $ 4,000.00 $ 600.00 $ 2,300.00 $ 5,600.00 $ 10,400.00 $ 1,380.00 $ 30,000.00 $ 5,000.00 $ 2,200.00 $ 2,500.00 $ 2,800.00 $ 3,000.00 $ 1,375.00 $ 3,380.00 $ 800.00 $ 39,600.00 $ 83,250.00 $ 9,020.00 $ 3,360.00 $ 18,000.00 $ 10,000.00 $ 9,000.00 $ 1,000.00 $ 3,000.00 $ 5,000.00 $ 85,000.00 $ 5,000.00 $ 540.00 $ 5,000.00 $ 6,000.00 Unit Price $ 9,000.00 $ 3,778.00 $ 1,646.00 $ 56,218.00 $ 43,887.00 $ 7,065.00 $ 5,835.00 $ 79.00 $ 78.00 $ 7.00 $ 106.00 $ 382.00 $ 7.00 $ 9,243.00 $ 9,405.00 $ 107.00 $ 107.00 $ 19.00 $ 3,000.00 $ /9.00 $ 22.00 $ 923.00 $ 89.00 $ 124.00 $ 194.00 $ 245.00 $ 1,867.00 $ 4,622.00 $ 2,074.00 $ 1,686.00 $ 803.00 $ 803.00 $ 98,076.00 $ 7,445.00 $ 140.00 $ 642.00 $ 6,000.00 Amount $ 9,000.00 $ 3,778.00 $ 1,646.00 $ 56,218.00 $ 43,887.00 $ 7,065.00 $ 5,835.00 $ 3,160.00 $ 468.00 $ 2,300.00 $ 16,960.00 $ 19,864.00 $ 92.00 $ 9,243.00 $ 9,405.00 $ 4,708.00 $ 5,350.00 $ 5,320.00 $ 3,000.00 $ 5,225.00 $ 7,436.00 $ 1,846.00 $ 16,020.00 $ 41,292.00 $ 7,954.00 $ 2,940.00 $ 11,202.00 $ 4,622.00 $ 6,222.00 $ 1,686.00 $ 2,409.00 $ 4,015.00 $ 98,076.00 $ 7,445.00 $ 1,260.00 $ 3,210.00 $ 6,000.00 Price $ 9,000.00 $ 9,000.00 $ 1,900.00 $ 45,000.00 $ 67,500.00 $ 5,000.00 $ 4,000.00 $ 85.00 $ 90.00 $ 0.50 $ 75.00 $ 340.00 $ 9.00 $ 4,000.00 $ 4,000.00 $ 94.00 $ 94.00 $ 8.00 $ 3,000.00 $ 8.00 $ 25.00 $ 925.00 $ 95.00 $ 158.00 $ 271.00 $ 292.00 $ 2,200.00 $ 8,000.00 $ 2,000.00 $ 2,000.00 $ 800.00 $ 700.00 $ 148,750.00 $ 4,000.00 $ 205.00 $ 900.00 $ 6,000.00 Amount $ 9,000.00 $ 9,000.00 $ 1,900.00 $ 45,000.00 $ 67,500.00 $ 5,000.00 $ 4,000.00 $ 3,400.00 $ 540.00 $ 1,150.00 $ 12,000.00 $ 17,680.00 $ 828.00 $ 4,000.00 $ 4,000.00 $ 4,136.00 $ 4,700.00 $ 2,240.00 $ 3,000.00 $ 2,200.00 $ 8,450.00 $ 1,850.00 $ 17,100.00 $ 52,614.00 $ 11,111.00 $ 3,504.00 $ 13,200.00 $ 8,000.00 $ 6,000.00 $ 2,000.00 $ 2,400.00 $ 3,500.00 $ 148,750.00 $ 4,000.00 $ 1,845.00 $ 4,500.00 $ 6,000.00 Unit Price $ 9,000.00 $ 5,181.00 $ 1,500.00 $ 30,337.00 $ 32,480.00 $ 10,340.00 $ 14,872.00 $ 88.50 $ 280.50 $ 3.00 $ 40.70 $ 250.00 $ /0.00 $ 3,200.00 $ 2,420.00 $ 76.00 $ 85.00 $ 2.20 $ 3,000.00 $ 2.20 $ /0.00 $ 1,332.50 $ 66.00 $ 98.00 $ 150.00 $ 225.25 $ 2,586.00 $ 6,678.00 $ 2,423.00 $ 2,832.00 $ 1,544.00 $ 1,545.00 $ 78,047.00 $ 4,284.00 $ 89.00 $ 770.00 $ 6,000.00 Amount $ 9,000.00 $ 5,181.00 $ 1,500.00 $ 30,337.00 $ 32,480.00 $ 10,340.00 $ 14,872.00 $ 3,540.00 $ 1,683.00 $ 6,900.00 $ 6,512.00 $ 13,000.00 $ 920.00 $ 3,200.00 $ 2,420.00 $ 3,344.00 $ 4,250.00 $ 616.00 $ 3,000.00 $ 605.00 $ 3,380.00 $ 2,665.00 $ 11,880.00 $ 32,634.00 $ 6,150.00 $ 2,703.00 $ 15,516.00 $ 6,678.00 $ 7,269.00 $ 2,832.00 $ 4,632.00 $ 7,725.00 $ 78,047.00 $ 4,284.00 $ 801.00 $ 3,850.00 $ 6,000.00 Minor Changes 1 EST Roadway Surveying 1 LS Record Drawings (Minimum Bid $1,500) 1 LS Mobilization 1 LS Project Temporary Traffic Control 1 LS Clearing and Grubbing 1 LS Removal of Structures and Obstructions 1 LS Pavement Removal Incl. Haul 40 CY Unsuitable Foundation Excavation Incl. Haul 6 CY Shoring or Extra Excavation Class B 2,300 SF Crushed Surfacing Top Course 160 TN HMA Cl. 1/2" PG 58H-22 52 TN HMA Thickened Edge 92 LF Erosion Control and Water Pollution Prevention 1 LS Protect Utility Pole 1 LS Topsoil Type A 44 CY Fine Compost 50 CY Seeded Lawn Installation 280 SY Property Restoration 1 EST Restoration Seeding 275 SY Remove Existing Storm Sewer Pipe 338 LF Pipe Anchor Assembly 2 EA Storm Sewer Pipe 12 In. Diam 180 LF Ductile Iron Storm Sewer Pipe 12 In. Dam 333 LF HDPE Storm Sewer Pipe 12 In. Diam 41 LF HDPE Storm Sewer Pipe 18 In. Diam 12 LF Catch Basin Type 1 6 EA Catch Basin Type 2 48 In. Diam. 1 EA Concrete Inlet 3 EA Outfall Connection to Existing Catch Basin Type 2 48 In. 1 EA New Pipe Connection to Existing Storm Drain Structure 3 EA Existing Pipe Connection to Proposed Storm Drain Strucl 5 EA Filterra Peak Diversion 7'x13' 1 EA Temporary Water Bypass System 1 LS Quarry Spells 9 TN Pothole Utility 5 EA Resolution of Utility Conflicts 1 EST Base Bid Item Total Amount $ 379,481.00 $ 320,048.00 $ 614,605.00 $ 436,159.00 $ 496,098.00 $ 350,746.00 Engineer's Estimate Flowline Harkness Construction NW Cascade Inc. RCNW Inc. RW Scott Construction Co. Base Contract Subtotal bid Price (Items #1 - #37) Contract Total Bid Price (Incl. 10.20 % Sales Tax) 379,481.00 418,188.06 $ $ 320,048.00 352,692.90 614,605.00 677,294.71 $ $ 436,159.00 480,647.22 496,098.00 546,700.00 350,746.00 386,522.09 Certified By: u Josh Hopkins City of Tukwila 8118/25 D luawLpeuv PS O M A S Attachment D August 15, 2025 City of Tukwila Joshua Hopkins 6300 Southcenter Blvd., Ste. 100 Tukwila, WA 98188 RE: Letter of Recommendation Dear Joshua, As requested, Psomas has completed the verification of Flowline, LLP. for the 2025 Drainage Program project. We have checked the status of Flowline, LLP on the Washington State Labor and Industries website to confirm they are currently insured, bonded, and licensed. Additionally, no strikes or debarment records were discovered federally or statewide. It is our recommendation that the 2025 Drainage project be awarded to Flowline, LLP. We have enclosed the contractor verification package for your review. Respectfully, Jordan Perry Construction Services Psomas Cc: 5