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Home My WebLink AboutReg 2026-05-04 Item 6E - Contract Amendment #2 - Lift Station 12 Retrofit: Phase 2 Design with Parametrix for $417,914.25City of Tukwila Thomas McLeod, Mayor Marty Wine, City Administrator ��& BILL x�`��~n�� ITEM NO. 6.E~ Agenda Item Panametrix Design Contract Amendment #2for Lift Station 12 Upgrades Sponsor /\dib/UtoUa|' Utilities Project Manager Legislative History April 27,2O2S Transportation & Infrastructure Services Committee May 4.2U2S Regular Meeting Consent Agenda Recommended Motion [] Discussion Only M Action Requested MOVE l[Oauthorize the mayor tuexecute the design contract amendment 2with Parametrixfor Lift Station 12 Upgrades. EXECUTIVE SUMMARY Council action is requested to authorize the City to amend the existing professional services agreement with Ponannutrix (Contract 24-1OO)k» begin design phase || ofLift Station 12. The new proposed agreement total is $639.218.83. Staff is requesting this item be forwarded to the May4th Regular Meeting Consent Agenda. DISCUSSION Panannethx was selected as the primary design consultant in 2024. Phase | of the design included studying the feasibility of various alternatives and performing 8 cost -benefit 8D8|ySiS to address the best options. It also included multiple discussions ofmilestones with engineering and operation & maintenance staff. Phase || will develop the selected o|ternaUve, ounnp|etu deaign, and provide COOSt[UC[iOO documents that contractors can bid OD and start the Upgn8d8S iO0Dl8diGt8|y. FINANCIAL IMPACT Disclaimer: Final terms and scope of work subject to review by the City Attorney X Expendituna-Budgeted []Expendituna-Unbudgeted []Expendituna-Gnent-Funded [] Revenue —One-Time (e.g. asset sale, surplus equipment) URavanue-Onguing Expenditures: Fund Source: $417.014.25 Revenues (if app|ioab|e): Sewer Enterprise Fund Not applicable Contractor (if applicable) Panamethx Scope ofWork Complete designs Phase || for sewer Lift Station 2Upgrades, which will produce abid-ready document. Amount $417.914.25 Duration Design inestimated tntake 12months Additional Comments: ATTACHMENTS Professional Services Agreement Amendment 2 Amendment 2Project FO8(EXhibitB) Statement OfWork (ExhibitA - provided for reference/not part of amendment) Minutes from 04/27/28 Transportation & Infrastructure Services Committee Meeting 'hubedistributed separately 75 City of Tukwila 6200 Southcenter Boulevard, Tukwila WA 98188 Agreement Number: 24-108(b) CONTRACT FOR SERVICES Amendment 2 Between the City of Tukwila and Parametrix, Inc. That portion of Contract No. 24-108 between the City of Tukwila and Parametrix, Inc. is hereby amended as follows: Section 4A: Payment. Payment for the work provided by the Consultant shall be made as provided on Exhibit "B" attached hereto, provided that the total amount of payment to the Consultant shall not exceed $639,218.83 without express written modification of the Agreement signed by the City. All other provisions of the contract shall remain in full force and effect. Dated this day of March, 2026. CITY OF TUKWILA PARAMETRIX, I C: Thomas McLeod, Mayor ATTEST/AUTHENTICATED: Andy Youn, City Clerk APPROVED AS TO FORM: Office of the City Attorney Printed Name: John C. Hungerford Title: Water Division Manager 76 CA Reviewed May 2020 Page 1 of 1 Exhibit D - Rates and Project Fee Estimate City of Tukwila Lift Station 12 Upgrade Amendment 2 — Final Design, Bid Support, and Services During Construction Phase Task Descriptio 2 Project Management & Meetings Data Collection and Review Develop Alternatives T�artsferfrom Task4 Original Budget Budget Remaining Trensfe 22,977.14 $6,082.9 $30,229.70 .90 $59,574.40 -$5,856.09 Alternatives Analysis $30,628.86 Transfers to Task transfers to Task 5 Preliminary Design Transfer from Manakemr Tran m Task Subconsultant Allocation (Includes 10% Markup) nagement Reserve sferto Task 5 Final Design Bidding Support 10 Construction Phase Services ,954.62 $742.50 $0.00 $10,505.36 9 ,505.36 09 ,856.D9 552.09 0,505.36 ,552.09 0,50 Labor Hours To Complete Labor Dollars To Amendment 2 Complete Amendment 2 Amendment 2 Revised Budge 172 $39,761.68 $33,678.77 $24,622.82 $11,780.92 $0.00 $0.00 $0.00 $0.00 471 $109,888.69 $92,629.28 $0.00 $0.00 $0.00 $0.00 524 $116,032.61 $116,032. 60 $13,540.64 $13,540.64 672 $150,040.88 $150,040.88 Project Expenses $692.00 $368.85 $580.00 $211,15 Mileage (assumes 600 mi for site an @ 50.725/mile) 5580.00 Totals l $221,304.58 I $ 36,553.07 1 $ I I $ 454,467.32 Total Additional Fee for Amendment 2 $ 417,914.25 City of Tukwila Lift Station 12 Upgrade Final Design, Bid Support. end Services Dnnng Consavct 216-2067-007 February 2026 77 Scopeof Work let's create tomorrow, together Exhibit A City of Tukwila Lift Station }2Upgrade ��_��l]�� ' ��'� �I �n�� Services ---------- — Final --��—' -^- Support, ^—'-~ ^~ - `^~ --~^--�g Construction This scope nfwork (SOVV) describes the services tobmprovided byPanammthx,Inc. (Ponamethx) for the Lift Station 12 Upgrade Project for the City of Tukwila (City). The City seeks to upgrade Lift Station (LS) 12 to improve reliability, provide renewed longevity, enhance operational efficiency, and bring the station into compliance with current codes. The City tasked Panametrixto provide alternatives on how toaddress these concerns. Lift Station 12 was initially built in 1972 and serves Drainage Basins 4 and 8. Upgrades tothe LS were completed between 2001 and 2003, including pump replacements and a new on -site generator. According to the City's 2014 Comprehensive Sanitary Sewer Plan (Carollo 2014), the average annual flow for Lift Station 12 is approximately 0.19 million gallons per day (mgd) and peak day average flow is approximately 0.72 mgd. Peak instantaneous flows were estimated to reach approximately 1.18 mg0 with infiltration and inflow contributing to approximately 0.57 mgd. As identified in the City's 2014 Comprehensive Sanitary Sewer Plan (Carollo 2014), it was anticipated that the pumps and the L3structure would reach their Useful life hy2023.The City has considered alternative options to serve Drainage Basin 4, and currently, the pumps at the existing LS have not been able tokeep upwith the variable flows due tnwear. On June 5, 2024, city staff and the Parametrix team conducted a site visit at LS 12 to discuss the project. Alternatives initially discussed at the site visit with city staff included upgrades to the existing station, converting the station to a submersible pump station, or building new wet well. The Lift Station 12 Upgrade Project includes developing and evaluating potential upgrade alternatives through collaborative workshops with city personnel, conducting an alternatives analysis, and determining a preferred design alternative for improvements at the existing lift station. Subsequently, a preliminary design submittal will be prepared, including 30% design plans, an outline oftechnical specifications, and aconstruction cost estimate. This SOW does net inGlude the Final Design Phase, whiGh will be determined duringthe PrelimiRary Design Phase, eRGornpassing final design plaRs, specifleations, GoRstruGtioR cost estimates, and necessary permit appliGations. This SOW also does not iRGIude bid support or Services during con--truction, which will be provided under a separate taSk order. Amendment to the Lift Station 12 Upgrade Project is to complete the design for the rehabilitation nfLS12'nndtoextendthesnn0eofservioosfnomfina|designthrnughUiddingaupportand construction. Amendments to the initial contract are highlighted in yellow. The original snopmofworkino|udoUanaltonnativasanalysksthatrmsultedinthepna|iminaryUmsign, which included major structural changes tothe LS. After the preliminary design was underway, the City requested to pursue a simpler rehabilitation of the LS in a meeting on October 30, 2025. A site City of Tukwila Lift Station 12Upgrade Amendment 2 - Final Design, Bid Support, and Services During Construction 216-2007{X)7 February 2028 78 Parametrik Scope of Work visit was held on November 4, 2025, to discuss simpler rehabilitation options. The simplified rehab work includes the following: w Replacement of pumps with Vaughan chopper pumps and associated rigging/maintenance access. • Standardized controls/ H uma n-Mach ine Interface (HMI)/Supervisory Control and Data Acquisition (SCADA)consistent with city stations (LS2/8/1Obasis). • National Fire Protection Association (NFPA)82Oventilation and safety improvements in wet well and dry pit. • Practical bypass provisions (including a potential permanent discharge bypass connection) to streamline future work. Document Organization • Exhibit A: Scope ofWork (Amlend*d). • Exhibit B: Limits of Survey. • ExhibitC: Preliminary Sheet List - Preliminary and Final Design (Amended). • ExhibitD: Rates and Fee Estimate (Amended). nm^—Exhibit F: Projected Project Schedule Scope Work Breakdown Structure Work Breakdown Summary: • TaSkO1 Project Management and Quality Control (An`endeU). • Taok02 Data Collection and Review (AmenUeU). • Task03 Develop Alternatives. • Task04 Alternatives Analysis. • TaskO5 Preliminary Design (AmenUeU). • TaskO6 Suboonsu|tantAUocehon. • TashO7 Management Reserve. • TaskO8 Final Design. • TaskOQ Bid Phase Services. • Task 10 Construction Phase Services. Tentative Project Schedule (Amended) The schedule below summarizes project tasks based on the anticipated notice to proceed (NTP) in March 2026. Receipt of NTP after this day may result in a corresponding delay in the following projected schedule for tasks included in this SOW. City of Tukwila Lift Station 12Upgrade Amendment - Final Dxsign, Bid Support. and Services During Construction 2 216-2067-007 February 2O25 79 Parametrik Scope of Work Start Finish Task 01Project Management and Quality Control 03/2026 12/2027 Task 02Data Collection and Review 03/2026 04/2020 Task OJDevelop Alternatives (Completed under Original NA NA Contract) Task U4Alternatives Analysis NA NA Task O5Preliminary Design 05/2020 09/2026 Task O6SuUonnsu|tantAllocation (Not used under new NA NA scope) Task OTManagement Reserve m4 NA Task 08Final Design -1o/2026 02/2027 Task O9Bid Phase Services Task 10 Construction Phase Services 03/2027 05/2027 12/202T Project Assumptions This SOW includes the following assumptions: • The Lift Station 12 Upgrade Project will be designed, bid, and constructed as a single rehabilitation package, with one contractor responsible for implementing all civil, structural, mechanical, electrical, controls, HVAC, and bypass -related improvements. • The project is based on a simplified rehabilitation approach to the existing LS 12 facility, without construction of a new wet well or conversion to a submersible pump station, as directed bythe City following the October 30.2O25.decision and November 4,2025.site visit. • The Final Design will advance the preferred rehabilitation concept validated during Preliminary Design, including pump replacement with Vaughan chopper pumps, standardized controls and SCADA integration, NFPA 820 ventilation improvements, and enhanced bypass provisions. This will include notification of proper ventilation, and the methods of notification should be coordinated with the City. • The design will be completed in sequential phases consisting of Preliminary Design (30%), 90% Design, and Final Design (Bid Set), with City review and comment periods occurring after 30Y6and 9OY6inaccordance with the project schedule. • Construction will be executed while maintaining continuous wastewater service, utilizing temporary bypass pumping and sequencing strategies developed during design; noextended station outages are anticipated. • For budgeting and planning purposes, the design phase duration is assumed to be approximately 12 months, and the construction phase duration is assumed to be approximately 8months, exclusive ofprocurement orunforeseen delays. • Hydraulic design flows, including Average Dry Weather Flow (ADWF) and Peak Wet Weather Flow (PVVVVF)'will bebased on historical station data, City -provided information, and/or prior planning documents, unless otherwise UirmntmU by the City. • Final pump sizing, control logic, and operating strategies will be developed to meet firm capacity requirements and city operational preferences, inc|uUing|eaU/|og/a|ternate operation. City of Tukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 3 216-2067-007 February 2O26 80 Parametrik Scope of Work • E|enthoa|, instrumentation, controls, and SCADA design will be standardized to match City of Tukwila Lift Stations 2, 8, and 10, including programmable logic control |er/nennntnterminal unit (PLC/RTU) architecture, HIVII conventions, alarm philosophy, and tag naming. • SCADA integration will be coordinated with the oity'ssystems and integrator; final programming and system outover will be completed by the City during construction and commissioning. • The design will comply with applicable codes and standards, including NFPA 820, Washington State and City of Tukwila design requirements, and current industry standards for wastewater facilities. • All above -grade equiprnent(ino|uUing generator, yard lighting, enclosures, and appurtenances) will be designed to remain within confirmed easement and right-of-way (ROW) limits. • No major off -site utility relocations are anticipated; any unforeseen utility conflicts discovered during construction may require additional services. • Environmental permitting is not anticipated; no cultural resource investigations or specialized environmental studies are required. • The City will lead public outreach, contractor procurement, advertisement for bid, and contract award activities with Paramet/ix assisting as outlined below. • The City will provide timely access to facilities, records, staff, and review comments necessary tosupport design development, bidding, and construction -phase services. • Changes tnproject sonpm,noquonoingoonst/aints./egu|otoryrnquirements,orcitystonda/da may require schedule and fee adjustments. • NngeotSnhnioo| investigation, coring, or structural |O8d testing is included as part 0fthis amendment. Task �� l , � �� v��^� �� `��u� �.��u Objective Task 01provides tracking scope, schedule, and budget for the project; overseeing project administration (filing, invoicing, etc.); coordination and communication with the City; and ensuring that Parametrix properly implements quality assurance/quality control (QA/QC) procedures over the duration nfthis project. For this amendment, Task 01 services remain unchanged but are extended to cover the amended project duration. 8ubtaskO1.1includes project start-up and establishing aproject ShanePointsite; documenting and communicating the scope of work, budget, and schedule as a road map for the project team; coordinating with the project team and addressing issues throughout the project; tracking the project budget using Parametrix in-house tools to verify that progress aligns with spending; and conducting check -in meetings with the city's project manager (PIVI) to discuss and review information and issues that may affect the vvork'n progress. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 4 216-2067{x}/ pabwary2O26 81 Parametrik Scope of Work Sn�btask01,2_Invoicing � � ��»��nnorts Subtask 01.2 includes preparing monthly progress reports to accompany each monthly invoice. Progress reports will include a narrative of work completed, anticipated work for the next period, and a description of issues affecting project progress and proposed resolutions if necessary. Subtask 01.3_Correspondence and Coordination with the City Subtask 01.3 includes regular communication with the city's PM to discuss and review information and issues that may affect the progress of the work. Communication may include phone conversations, scheduled meetings, and electronic communication. Subtask01,4_ Coordinationwith the Parametrix Team Subtask 01.4 includes regular communication with the Parametrix team to discuss and review information needs, project information, and issues that may affect the progress of the work. Communication may include phone conversations, scheduled meetings, and electronic communication. Subtask 01.5 includes time to perform quality assurance to verify quality checks have been completed and addressed, and time to review design as contract plans and specifications are being prepared. QA/QC will be performed to ensure that City comments have been thoroughly addressed and internal reviews have been completed prior to delivery of all work products to verify consistency with internal standards ofpractice and care. Task 01 Assumptions • Project duration ks8months. • Budget assumes up to six PM check -in meetings to be attended virtually by up to two Panametrixstaff for up to 0.5 hours each. • Budget assumes up to 10 design team meetings to be attended virtually by up to three Porametrix staff for up to 0.5 hours each. • Amended efforts are anticipated to add 7 months to the initial projected project schedule. • Amended meetings will include monthly client check -ins during the design phases. • Amended budget assumes up to five PM check -in meetings to be attended virtually by up to two Parametrixstaff for uptoO.5hours each, • Amended budget assumes up to 10 design team meetings to be attended virtually by up to four Panametrixstaff for uptnO.5hours each. l��&r �� Deliverables �� ~�"��"es • Miscellaneous correspondence todocument project management issues. • Monthly progress reports enclosed with invoices (in POFfile format). • Project Schedule (in POFfile format). City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 5 210-2067fX07 pebmary2O20 82 Parametrik Scope of Work � as��l��n2 Objective ~~~��~Uve ata "k, I o �. ��on and Z, Task 02 includes the collection, review, and assessment of available information and mapping prior planning efforts before beginning the alternatives analysis and 0na|irnina/y design. The Panamstrix team will provide comprehensive written request for information (RF|) lists, which may include record drawings and relevant planning studies. Subtask 02.1_Data Collection and Review Subtask 02.1 includes collecting and reviewing available historical data, design specifications, performance metrics, and maintenance records as they pertain to the existing LS, as well as collecting and reviewing available technical specifications, performance data, and cost estimates for submersible pumps, dry pit pumps, and new wet well designs. This nubtashhas been completed under the original scope. Sn�btask02,2_ ��d��^ Survey Mapping Subtask 02.2 includes determining the ROW for Andover Park W, as shown in Exhibit B.Panamethx will provide topographic mapping for the LS located near the southeast corner of the Westfield Shopping Center, as shown in Exhibit B. The topographic limits will include the location of the LS and the surrounding parking lot of Key Bank. Parcel boundaries will be limited to within the area to be surveyed, and easements of record depicted on the subject property's binding site plan will be plotted nnthe Uascmap.Survey work will include the setting ofany survey monuments at any ofthe exterior boundary points ofthe subject properties. All physical improvements —such as signs, guardrails, fences, driveways, utility poles, water features, telecommunication features, storm drainage features, sewer manholes, and other features —will be mapped during the survey within the ROW as vve||. All storm drainage and sewer structure invert elevations will be included within the scope of work. Trees will be mapped on -site but will be limited tVtrees that have trunk diameters of0inches orlarger. Parametrix will coordinate with Applied Professional Services (APS) to have the utilities marked out. Conductible utilities will be mapped per the locate company's markings. Potholing is not included. Survey, easement, and title coordination will be performed to confirm existing property and utility constraints affecting the project site. The Engineer will overlay current ROW and recorded easements onto the survey base tnverify the location ofthe existing generator, pad, and other equipment relative toeasement boundaries and access limitations. A limited title review will be completed using a City -provided title report or City -provided records to identify utility easements, encumbrances, and conditions that may affect equipment siting or access. The Engineer will summarize the findings and document any implications for the project, including potential requirements to adjust equipment locations to remain within established easement limits. Utility coordination will be initiated to support verification of existing underground infrastructure. Utility locate requests will be facilitated by the City, and available as -built information will be reviewed and reconciled with field markings to preliminarily trace the force main alignment and City of Tukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction O 216-2007-0X07 Febmary2O28 83 Parametrik Scope of Work identify potential bypass discharge tie-in locations for subsequent confirmation during later design and construction phases. Subtask02,3_3D Scanning SubtapkO2.3includes 3Dlaser scanning ofthe site property, building structure exterior and internals, and existing equipment. This will include both wet well and dry well locations. Laser scanning provided will initially only be used to confirm and view structure and component locations and dimensional relevance to each other. Scanning performed will not be to any survey coordinate system but will be tied into surveyed temporary benchmarks so it can later be combined with the survey basemapduring Task O5Preliminary Design. Scanning will require physical access toareas and spaces needed to complete this project, and City shall provide access as required to complete this effort. This subtaskhas been completed under the original scope. Subtask 02,4_3D Records &O&M Review This task aims to document operational and maintenance needs and reconcile records so design assumptions reflect real -world O&M practices and constraints. This subtask includes direct engagement with Operations and Maintenance (O&M) staff, to document operational challenges, maintenance issues, and user preferences that influence long- term maintainability and reliability nfthe facility. Topics will include ragging frequency and impacts, pump removal and replacement workflows, |aydovvn and rigging ,equirennents, hatch sizing and uaaUi|ity, ventilation and dehumidification performance, level control and instrumentation re|iaUi|ity, and expectations for equipment and controls/SCADA standardization. Information gathered during these interviews will be used to validate design assumptions and develop proposed improvements that align with operational practices. Subtask 02.5_Condition & Thickness Testing This subtask is to verify material condition and remaining wall thickness at critical locations to confirm rehabilitation feasibility and inform replacement/ repa i r decisions by performing targeted thickness testing of the ductile iron pipe at wall penetrations; spot -assess concrete/wet well liner interface; and to photo -document conditions. This task also includes performing targeted thickness testing at metallic wall penetrations and representative straight runs (suctinn/disoharge)to determine remaining wall thickness; to calibrate the gauge to known thicknesses; and to record readings on an annotated key plan. Parmmetrixwi|| establish acceptance thresholds with the City (e.g., relative to nominal wall) and identify any locations that trigger replacement/design modifications. �� Assumptions • Uptnthree RF|lists will hoprepared and provided 10the City. • City response for each RF|list is7business days. • RFI lists and shared documents will be shared and accessed via an established Project SharoPointsite. • Parametrix survey crews will be provided reasonable access to all areas requiring surveys. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 7 210-2067f007 February 2028 84 Parametrik Scope of Work • Para methx*iUboomitting topnQraphi nmaVping with Andover Park. The topographic survey will extend tnthe west face ofthe curb within the ROW ofAndover Park. • All electronic mapping standards will be based on Parametrix drafting standards. • Parametrix survey crews have client permission to perform minor brushing with machetes to conduct this survey, if needed, for field crews to perform work described within this SOW. • Unless otherwise specified by the City, horizontal datum shall be North American Datum (NAD) 83/11 Washington Coordinate System, North Zone, and vertical datum shall be North American Vertical Datum of1988(NAVD88). • The boundary of the property will be merged into the topographic mapping, as appropriate, and shown for graphical purposes only. This service can be provided if required at a later date; hn=over, any setting of property cornnrs, and filing ofa record of survey (if required) will be considered Additional Services and billed separately as described below. • For safety reasons, Parametrix survey crews are not allowed to enter subsurface vaults. Parametrix work will be conducted from the surface, using measure -down techniques. Parametrix survey crews will also not open any structure covers over 80 pounds. • Site scanning will be approximately 20 to 35 scans. Once complete, scans will then be combined and stitched together, providing single site scan. • Budget assumes u0tO6hours ofscanning time shall herequired and upto8hours tn combine all scans into single site scan. • City will provide available record drawings, SCADA8xpOrts. maintenance |ngs, and electrical documentation within 10 business days ofrequest. • Key assumptions, onnobaints, and decisions resulting from the O&M interviews and drawing reconciliation will be documented and carried forward into the Basis of Design report. • City will facilitate access to prior project records and station access for nondestructive examination (NDE). • City O&M staff will provide ventilation for wet well concrete and liner assessment. • Assume four 3O'minutn virtual meetings to include three Puremetrixstaff. ~��&r K�^� Deliverables .=== == �,=.��==es • RF| lists (provided electronically). • One PDF copy of the topographic aunxay. • An electronic drawing file of the topographic survey in AutoCAD Civil 3D 2020 format in one drawing file. • Meeting agendas and notes for meetings (PDF file format). " 1��_� � �� ° ��w�ves �� ^~ ��~ ~=~Uve Task 03 provides developing and evaluating viable alternatives for upgrading L812and ensuring improved performance and compliance with current standards while minimizing bypass pumping. Initial concept alternatives include: City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 8 218-2067-007 February 2O26 85 Scope of Work • Alternative 1:Upgrade Existing Station. • Alternative 2:Convert toSubmersible Pump Station. • Alternative 3: Build New Wet Well. For this amendment, Task 03 services remain unchanged and were completed under the initial � 14, � � t it: t. k*71 Subtask 03.1 includes providing technical evaluation and support in preparation for Workshop 1 (see Task 03) in support of a concept screening to determine the two design alternative types to develop for refinement, selected from the three concept alternatives: submersible, dry pit and new wet well. Parametrix will assess available information to determine the practicality of implementing each alternative. This aubtosk includes developing a description of each of the three alternatives as listed above, a concept feasibility layout, a brief list of advantages and disadvantages, and a Class 5 engineer's opinion of construction cost. If initial evaluation determines the alternative has a fatal flaw, the concept layout and opinion of construction cost will not be developed. � t I It", .Nil it 110", *k D Subtask 03.2 includes providing technical evaluation and support to refine two design alternatives in preparation for Workshop 2 (see Task 04). This subtask includes developing adetailed description of two design alternatives and identifying potential risks and challenges for each alternative, including technical, financial, and operational. This subtask includes developing confirmation layouts for each alternative and an evaluation of real estate needs, including staging area, traffic impacts during construction, construction feasibility, as well as a Class engineer's opinion of construction cost. Estimate of property purchase costs are not included. � A� SS I S m The number of evaluated alternatives will remain as listed in this task. • Nocomputer sewer model development will beincluded inthis task. • Sufficient data on the current pump station's performance, maintenance and operational history, and technical specifications will be available to evaluate and prepare cost estimates for submersible, dry pit, and new wet well alternatives for accurate comparison and evaluation. • The three concept feasibility layouts will beone page each. • The two planning -level confirmation layouts will heone page each. • Subtasks 03.1 and 03.2 engineer's opinion of construction costs will be prepared to the Association for the Advancement ofCost Engineering (AACE)Classes 5and 4,respectively. Typical accuracy ranges for AACE classes vary depending on the technological complexity of the project, appropriate reference informerion, and the inclusion of an appropriate contingency determination. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 9 216-2067(0)7 pabwary2n26 86 n Scope of Work �I . r U .es • Information and documentation to support Alternative Analysis Workshops. See Task 03 (various file formats). • Three concept layouts (in PDFfile fnnnat). • Two feasibility layouts (in PDFfile fnnnat). • Class 5 and Class 4 engineer's opinion of construction costs (in PDFfile fnrmat). _ �� I ~ ��. UU�~°~0v Task 04 provides a holistic evaluation of viable options for upgrades to LS 12 with city staff. Two workshops will be conducted: the first to screen initially identified alternatives, and the second to evaluate alternatives using a Triple Bottom Line JBIL) Analysis to determine a preferred upgrade design option. This task also includes a technical memorandum (tech memo) summarizing the decision process in determining the preferred alternative. t A � � Iot Subtask 04.1 includes providing key services to prepare for and conduct two Alternative Analysis Workshops, including the development ofpresentation materials, facilitating the workshops, providing technical expertise during the workshnp, and providing documentation of discussion, denisions, and action items. Parametrix will meet with city personnel to evaluate the identified alternatives, as well as discuss the information collected and analyzed inTask 03.These workshops include: m VVorkshop1: Review project goals and preferences with city staff toconduct aconcept screening ofthe three identified concept alternatives to determine two alternatives to further refine and evaluate. m Workshop 2: Conduct an alternatives comparison JBIL Analysis) of two identified alternatives to determine one preferred design alternative. This subtask has been completed under the original scope. � "AA t ° *k. � � Subtask 04.2 includes documenting and summarizing the alternatives and decisions made during the Alternatives Analysis Workshops into a tech memo, ensuring clear communication of the selection process, alternative descriptions, and supporting exhibits. Preliminary Alternative Analysis Tech Memo sections include: • Project Introduction and Background. • Workshop 1ond Alternative Descriptions. • Workshop 2and Alternative Descriptions. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 10 216-2067(0)7 February 2026 87 n Scope of Work • Preferred Alternatives and Recommendations. • Attachments: —+ Concept and Confirmation Layouts. —+ Engineer's opinions of construction cost. —+ Workshop Agendas and Summaries. —+ Presentation Materials. This subtask has been completed under the original scope. It if SS��I=~Kf S • Budget assumes each Alternative Analysis Workshop will be attended by up to three Parametrix staff (two in -person and one virtually) for up to 1.5 hours each. Budget includes travel time to the City of Tukwila Public Works Office/Conference Room from the Parametrix Puyallup office and mileage. • Each Alternative Analysis Workshop may be attended by up to five city personnel. • Criteria for the TBL Analysis will be developed with the City via check -in meetings with the city PM (see Subtask 01.3). The criteria for evaluation shall include financial, environmental, and social benefits, impacts, and risks. • Workshop materials may include tables, nhmMs' and a decision matrix tnfacilitate discussion and engagement. • The Alternative Analysis Tech Memo will beuptn15pages with uptoapproximately four attachments, esdescribed above. • The Draft Alternative Analysis Tech Memo review comments will be collected and consolidated by the city PM and returned to the Parametrix team within 10 business days of Draft Tech Memo delivery. • Budget assumes that review comments will not involve changes to decision made in the workshops, and will include limited tracked edit su_-_-estions and margin comments provided hythe City onthe Draft Alternative Analysis Tech Memo. • Parametrix will finalize the Alternative Analysis Tech Memo within 10 business days after receiving City review comments. I e"Uiver � I U .es Anagenda for each Alternative Analysis Workshop (in PDFfile fonnaU. Workshop presentation materials (various file fnrmets). Alternative Analysis Workshop Summaries (in PDFfile fnrmat). Alternative Analysis Tech Memo (Draft and Final inPDFfile formo¢ City ofTukwila Lift Station 12Upgrade Amendment - Final Dxsi&n. Bid Support, and Services During Construction 11 216-2087(0)7 Fe0mary2O2O 88 Parametrik Scope of Work ask��l� �� Objective ~~~��~Uve e Task 05 provides initiating the Preliminary Design Phase of the preferred alternative determined in Task 04. This task includes an initial design meeting with city staff, preparation and submission of the Preliminary Design (30%) Submittal, including plans, specification outline, and engineer's opinion of construction cost, as well as a design review workshop with city staff. This task will establish the technical basis, performance criteria, and code compliance for the rehabilitation. Subtask 05.1—Initial Design Meeting ~ SuhtaskO5.1includes kicking off the preliminary design phase with city staff and ensuring stakeholders are aligned with the identified preferred alternative in Task 04, project goals, design requirements, and project expectations for producing the 30% Design Submittal for LS 12 upgrades. This meeting will focus onreviewing and confirming project goals and requirements; revisiting the project schedule, including milestones and deliverables; and addressing any initial questions or concerns from stakeholders. Subtask 05.2—PreDesign g Subtask 05.2 includes developing preliminary design plans for the proposed upgrades to LS 12 based on the preferred alternative determined in Task 04, generating a proposed list of Construction Specifications Institute (CS|) and Washington State Department of Transportation (VVSDOT) technical specifications for the project, and preparing a3OY6engineer's opinion nfconstruction cost. A preliminary Drawing Sheet List is included as Exhibit C. Suhtask05.2isamended toinclude: • Confirm design flow and select apump. • General arrangement plans/sections showing pump fit, monorails/hoists, hatch/grating geometry, new I-beam over check valves, valve replacements, piping modifications, and davit sockets. • Wet well liner limits and mezzanine replacement concept. • Generator constraints and alternatives (in'p|anevs. relocation within easement). • Preliminary bypass plan and traffic/temporary work needs. • Confirm design flows and firm capacity assumptions using historical data and City input. • Size Vaughan chopper pumps for duty/standby with required firm capacity. • Update the 3Dmodel tosupport clash identification and fit. • Check pump dimensions/weights versus hatch openings, lift heights, monorail clearances, and lay -down workflow. • Document operating logic assumptions (|ead/|ag/a|ternate.anti-short cycling) for carry - forward into design. City of Tukwila Lift Station 12Upgrade Amendment - Final Dxvign, Bid Support. and Services During Construction 12 216-2067-007 February 2O26 89 Parametrik Scope of Work w Confirm generator constraints and document whether relocation is required to remain within easements. • Prepare schematic general arrangement plans and sections demonstrating pump fit, rigging paths, hatch/grating modifications, and valve access. • Develop revised 30% plans indicating layout feasibility and access, including: —+ Monhenioa|Design- Pump arrangement, major piping, valve types, rigging concepts, and pump removal envelopes. —+ Structural Design Conceptual support steel, hatch/grating modifications, monorail/davit concepts, and load paths. —+ Electrical/Controls Preliminary one -line diagram, major loads, panel concepts, generator interface assumptions, and controls architecture consistent with LS 2/8/10. —+ HVAC/V*nti|otion Preliminary NFPA820ventilation zoning, air change assumptions, and equipment concepts. —+ Civil/Site Site access, equipment footprints, easement compliance, and surface restoration limits. —+ Bypass Schematic bypass layout and sequencing narrative sufficient toconfirm feasibility. n Prepare a 30% Engineer's Opinion of Probable Construction Cost (EOPCC) reflecting the confirmed rehabilitation scope and sequencing assumptions. Subtask05,3_ ��^ Meeting ^ ~ Subtask 05.3 includes a Preliminary Design Review meeting with city staff to review City comments and feedback onthe Preliminary Design Submittal. SuhtoskO5.3isamended toinclude: • Conduct e second Preliminary Design Review meeting to review City comments, cnnDnn scope alignment, and identify required refinements prior toadvancing tV9O96design. • Prepare ocomment response log documenting how each City comment isaddressed, deferred, orincorporated into subsequent phases. Subtask 05.4_Basis of Des` ��D� g` ' � This task includes establishing and documenting project -wide design criteria, assumptions, and discipline requirements to provide a consistent foundation for Task 08 (90% Design) and Task 09 (Final Design/Bid Set). Parametrix will prepare a comprehensive Basis of Design (BOD) Report documenting the technical foundation and design assumptions for the Lift Station 12 Rehabilitation. The BOD will consolidate all discipline -specific crberiaandaerveastherefenanoepnintfor8OY6designdewa|opmont. The BODisanticipated toinclude: • Project Background and Decision Basis. • Project Assumptions and Design Criteria. City of Tukwila Lift Station 12Upgrade Amendment - Final Duvign, Bid Support, and Services During Construction 13 216-2067{07 pebmary2O25 90 Parametrik Scope of Work —+ Hydraulic Design Summary. —+ Pump Selection Summary. • Existing Conditions Assessment. —+ ROW/Easement and Access Constraints. —+ Thickness Testing Results Summary. —+ Record Documents Reconciliation. • Rehabilitation Strategy and Alternatives Summary. • Operational and Maintenance Considerations. • Controls, SCADA,and Integration Requirements. • Bypass Requirements and Sequencing Basis. —+ Bypass Design Basis. • Permitting and Regulatory Basis. • Coordination Record. • Preliminary Layout. Task 05 Assumptions • Budget assumes the Initial Design meeting will be attended by up to four Parametrix staff (two in -person and one virtually) for up to 1.0 hours each. Budget includes travel time to the City of Tukwila Public Works Office/Conference Room from the Parametrix Puyallup office and mileage. • Budget assumes up to 12 sheets will be developed as part of the Preliminary Design Submittal, as listed in ExhihitC. Should the preferred alternative determined inTask O4 require more Preliminary Design Plans than assumed, an amendment may be required. • The preliminary cost estimate will Ue prepared tothe AACEClass 3.Typical accuracy ranges for AACE classes vary depending on the technological complexity of the project, appropriate reference infnrmatinn, and the inclusion of an appropriate contingency determination. • The preliminary cost estimate will generally be estimated as single lump sum prices, with unit prices for earthwork and underground piping aaappropriate. • The City review ofthe Preliminary Design Submittal ia1Obusiness days. • The City will provide review comments and feedback to Parametrix prior to the Preliminary Design Review meeting. • Budget assumes the Preliminary Design Review meeting will be attended by up to four Parametrix staff (two in -person and one virtually) for up to 2.0 hours each. Budget includes travel time to the City of Tukwila Public Works Office/Conference Room from the Parametrix Puyallup office and mileage. • City review comments and feedback of the Preliminary Design Submittal will be incorporated into the Final Design phase. • City will provide control panel examples (e.g.. LS2)for standardization reference. City of Tukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 14 216-2007f07 February 2020 91 Parametrik Scope of Work • Preliminary Design represents approximately 3O%design completeness, intended to confirm feasibility, layout, and sequencing. • The City review nfthe BODReport is1Ubusiness days. • Budget assumes one consolidated set nfCity comments per deliverable. • Only minor permits will be required for this project, such as ROW permits or permits of similar effort. No major land use, environmental, shoreline, State Environmental Policy Act (SEPA), or building permits are anticipated as part of this rehabilitation scope. The City will prepare, submit, obtain, and pay for all nyquinaU permits. • Budget assumes the Preliminary Design Review meeting will be attended virtually by up to three Parametrixstaff for up to 1.5 hours each. • Alternatives evaluation was completed under the original contract. This task does not re- evaluate submersible o/ new wet well alternatives. Task K�� Deliverables .=�,� =�~ ",=��es • Agenda and meeting summary for Initial Design meeting (draft and final in PDFfile fnrmat). • Preliminary Design Plans, half-size, 11 by 17 inches (in POFfile format). • Preliminary Design Specification Outline (in PDFfile fnrmat). • Class 3 engineer's opinion of construction cost (in PDFfile formaU. • Meeting summary for Preliminary Design Review meeting (draft and final in PDFfile fnrmaU. • Revised Project Schedule (in PDFfile formaU. • Revised Preliminary Design Deliverable, which includes: —+ Revised Preliminary Plans, helf-sizo.11Uy17inches (in PDFfile fnnnaU. —+ Revised Preliminary Design Specification Outline (in PDFfile fornnat). —+ Revised Class 3 engineer's opinion of construction cost (in POFfi|e format). • Meeting summary for second Preliminary Design Review meeting (draft and final in POFfi|e format). • Preliminary Design Review meeting summary and comment response log (PDF or Excel). • Basis of Design (B0D) Report (Draft and Final PDF). 1�� X� ��° ��^� �� ~� �wu��1�u��^u ��on ��*��. ~~~��~"°= Task 08 provides a budgetary allocation for suUoonnuhantseninms that will be required for the Alternatives Analysis and Preliminary Design of the Lift Station 12 Upgrade Project. Subtask 06.1 includes a detailed proposal for utility locate services, prepared by subconsultant, APS, included in Exhibit E. In 8onere|. APSvviU locate and mark known utilities within the project City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 15 216-2007<00/ February 2026 92 n Scope of Work boundaries and will sweep the project boundary areas to attempt to identify any unknown or For this amendment, Subtask 06.1 services do not change and were completed under the initial contract. Exhibit E mentioned above was included in the original scope of work and is not included herein, nor is any additional work with APS. " � S I U I t m The City will review subconsultant's scope and fee proposals in advance of contract execution between prime consultant (Parametrix) and subconsultant. Once proposals are acceptable to the City, authorization will be issued in writing to allow the subconsuitant to be added to the prime consulting contract and provide authorization to proceed with the scoped work. m Work will not proceed for any of the sub -consulting efforts until the City has provided authorization for the subcontractor to be added to the primary contract, has approved of the subconsu|tant'sscope and fee, and has issued NTPfor the work. I � U " v r 0 � U . S m See Exhibit E.SuhconsultantProposals, for detailed deliverables. 41L U ° �, This was completed under the initial contract. ~~~^~ � ;#i 41, l� ct t Task 07 is a budgetary allocation so that the City has a discretionary budget to cover professional services that are not defined in this SOW and are unknown at the time of the scope development. Penametrixwill provide awritten scope and fee estimate for any additional services requested prior to execution for the City's consideration. This task will remain unused unless the City issues a written (email) authorization for work to be completed under this task. For this amendment, Task 07 services do not change. � i� SS ~� �~ l S • The budget for this work may beused byPonamethx,asauthorized bythe City. • The City will authorize the use of funds in this task in writing (email) prior to Parametrix starting the work. I � " I . r � I U .es m Documentation for pnofonninno| services not defined in this SUVV, as required or requested by the City. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 15 216-2067(0)7 February 2026 93 Paralmetrik Scope of Work l�� ° ��^� n�� Final ��esi*,,,n Objective ~~~��~�e Task 08 advances the 30% Preliminary Design and Basis of Design into a coordinated 90% design package and abid-ready contract document set suitable for bidding and construction. Subtask 08.1 -~ 90% Design SuhtaskO8.1includes: n Develop 90%preliminary plans, specification list, and cost estimate for the selected design alternative. m Incorporate City comments and update deliverables for use in the 90% design phase. Subtask 08.2_90% Design Review Meeting Subtmsk082isamended toinclude: • Conduct o90%Design Review meeting toreview City comments onthe 80% Design. • Prepare and maintain a comment response log documenting how each City comment is addressed, deferred, orincorporated into subsequent phases. Subtask 08.3-100%/Bad« Design g • Advance the 90% deliverables and update deliverables to be used for Bid -Ready submittals (plans, specifications, and engineer's estimate), incorporating City comments received from the 9096design review. • Finalize drawings for stamp/seal and issue for bid. • Fina|izeUiU-fnrrnatengineer's8stimate'biUscheUu|e,anUquantityhasistnsupportQty procurement and bid tabulation. �� Assumptions • The City will determine the location ofstaging onUeneasandnegotatovvithed]acent property owners ifnecessary. • Task 08 assumes the City has approved the 30% deliverables and Basis of Design (Task 05) prior toadvancing to9OY&.City will provide one consolidated set nfcomments per • The City review ofthe SO%Design Submittal is10business days. • Budget assumes the Preliminary Design Review meeting will be attended virtually by up to three Ranametrix staff for up to 1.5 hours each. • Budget assumes one 90% review meeting and one consolidated round of comment incorporation. • The City will provide the Bid Forms and General Conditions for inclusion in the contract documents. m Anticipated Final Design Sheets are included in Exhibit C. City of Tukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 17 216-2067{0}7 February 2020 94 Parametrik Scope of Work w Only minor permitting will be required (i.e., ROW) and city staff will apply for and obtain ��wm&r K�� Deliverables "=�"~ ~°= ~~=.U��es * 9096 Design Deliverables (in PDFfile fornnet): —+ 9096 plans. + SO%omst estimate. —+ Quantity take off with backup calculations. —+ 0O96project specifications. —+ Draft bypass and sequencing narrative suitable for inclusion in the construction documents. —+ Updated comment response log that shows comment responses at3O%design. * Meeting agenda and summary for the review meeting (POFfile fnrmet). * Bid -Ready Design Deliverables (in PDFfile f0rmat): —+ Stamped and sealed electronic copy nfdrawing set (22 by 34). —+ PDFand K8SExcel format Engineer's EOPCCtoheused for bidding and bid tab. Note: this is different from Total Project Cost Estimate (TPCE). —+ Stamped and sealed specifications with all appendices. --+ Final bypass and sequencing narrative suitable for inclusion in the construction documents. Updated comment response log that shows comment responses at3O%and S0% design. 1� �� °��° �� m� �� ~��"�� Objective Task 09 provides assistance to the City during bidding and award phase of the project on an as - needed basis and includes: • Assist the City in responding to bidders' questions and preparing addenda as necessary to clarify the Contract Documents. • Attend one pn+biUmeeting. • Upon referral from the City, Paramet,ixwi|| respond to uptothree questions (0&A). Those responses will be posted by the City on the advertisement websites as part of the Q&A and will be limited to clarification of the plans, specifications, quantities, sequencing, and design intent • Prepare two draft addenda, ifneeded, tnclarify, revise, ormodify construction plans, technical specifications, orproject oonditionsduringthmbiddingprocess. • Provide supporting documentation, if requested, for award approval and prepare Award Recommendation letter. City of Tukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 18 210-2007{0}7 February 2020 95 Parametrik Scope of Work Task 09Assummt^ons • City will issue the advertisement for bid and manage procurement logistics (QuestCDN, plan holders list, etc.). • The City will be the lead in receiving questions from bidders, subcontractors, equipment suppliers, and other vendors. • No significant changes will be made to the design requiring model changes to the plans or page updates tothe specifications. • Number of addenda is assumed to be up to two; additional addenda may require a soope/feeadjustnnent. • Pnebidmeeting will be attended byone Panonnetrixstaff member and last u0tn0hours, including travel time. • The bidding period will last 3 weeks and may be extended by 1 additional week, if necessary, to respond to bidders' questions from the prebid meeting, to prepare and issue addenda, or ifthe City deems anextension justified based onbidder requests. ��w�Km K�� Deliverables "�="~.=~° ~~�"U��"es • Prebid meeting agenda, attendance record, and meeting summary (PDF file format). • Written responses to bidders' questions as required in MS Word format via onnai| to city PM. • Uptotwo draft addenda in Word fornootonnni|eU to city PIVI. • Bid Evaluation and Award Recommendation (POFfile formot). Task � � �"��u� � � � � onstruct,�o�� ces ��u��~ ~~~��="°es Task 10 provides services to assist the City during construction on an as -needed basis during the construction phase ofthe project. Effort and services for this task are limited tothe Level ofEffort (LOE) assumed for the tasks shown below. Should the actual tasks require more LOE than assumed, acontract amendment may Ueauthorized Uythe City. Subtask 10. 1 - Construction Kickoff & Progress Meetings SuUtosk1D.1includes: w Attend kickoff meeting toreview design intent, critical sequencing, bypass expectations, and submittal procedures. • Attend up to 12 construction progress meetings, in -person or virtual, as directed by the City. • Provide technical input during meetings related to interpretation of the Contract Documents and design intent when requested bythe City. • Prepare meeting summaries when requested bythe City. City ofTukwila Lift Station 12Upgrade Amendment - Final Dcoign. Bid Support, and Services During Construction 18 210-2007-007 February 2020 96 Parametrik Scope of Work Subtask 10.2 - Submittal & Shop Drawing Reviews Subtaak1D.2includes: a Review Contractor submittals, shop drawings, product data, and O&M manuals for general conformance with the Contract Documents. • Provide consolidated review comments identifying conformance issues, required clarifications, o/deviations from the Contract Documents. • Review of Contractor's wet well sequencing procedure to confirm that the Contractor's proposed work sequence maintains continuous, safe, and code -compliant operation of the wet well while modifications are performed. Subtask10.3_RFI and Clarification Support SuUtask10.3includes: • Respond to RFIs in a timely manner; prepare supplemental drawings, details, or written clarifications, asnecessary. • Receive, log, and track RFls assigned by the City for engineering response. • Track design clarifications to ensure consistency across disciplines. ��,�_��nA�� ___-___ - - __� �°_�.-._~~ --~---~'. --~-~�__-_~_~�~-- -~- Payment Subtask1D.4includes pay application review services during construction tOsupport the Ckys payment decisions and to confirm that requested payments are consistent with Contract requirements and observed progress. Work will beperformed inthe following sequence: • Receive and log Contractor pay applications referred by the City; confirm the submittal includes required forms, lien releases/affidavits (as app|ineU|e),certified payroll/labor compliance documentation (if applicable), updated schedule/progress documentation (if required), and stored materials documentation (if applicable). • Review the Schedule of Values (SOV) and pay request line items for general consistency with the Contract, bid schedule, approved change orders, unit prices, and agreed measurernont/paymentprovisions. • Compare the requested percent complete and quantities to available supporting documentation and general field observations (when site visits occur) to identify discrepancies or items requiring clarification. • Prepare a written recommendation for payment to the City that identifies the recommended pay amount, retainago, any ho|dy/withhn|ds. stored materials recommendations (if applicable), and the basis for adjustments from the Contractor's request. • Maintain epay application log documenting application number, period, amount requested, amount recomnnended, rmtainagm, and cumulative totals for city records. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 0 218-2007{X)7 February 2026 97 Parametrik Scope of Work Subtask 10.5 - Field Observations & Site Visits Subtaak1D.5includes: • Conduct up to eight periodic site visits during critical activities (bypass installation, demolition, wet well work, pump instaUatinn),narequested bythe City. • Prepare field observation reports documenting conformance, issues, and recommended actions. Subtask 10.6 - Change Order Review & Negotiation Support m Evaluate Contractor change order requests (CORs) for technical validity, schedule impacts, and cost reasonableness. Perform independent, engineering -level cost evaluations of proposed changes using unit phcing.|ahnr/equipnnent assumptions, nrhistorical cost data asappropriate toassist the City innegotiations, asrequested. Document findings and recommendations in written memoranda or annotated COR responses. Subtask 10,7_ , Testing &Commissioning Subtask1O7includes: • Review Contractor -submitted start'uA testing, and commissioning plans and procedures for general conformance with the Contract Documents and design intent. • Attend up to two on -site start-up/commissioning events, as requested by the City. • Support pump testing, e|octricol/SCADAfunctiona| oheokn, controls integration, and alarms testing. • Assist with punch list development during substantial completion wa|kthroughs. SubtasD« 10.8 -Record Drawings & Closeout Documentation Subt]Sk10.8includes: • Review Contractor -provided as -built drawings, redlines, and field markups for general completeness and consistency with the Contract Documents. • Prepare Record Drawings based solely on Contractor -provided as -built information and approved change documentation. • Incorporate approved change orders, RF1s, and field -directed revisions into the Record Drawings. • Review closeout documentation packages (O&M manuals, warranties, testing reports) for general completeness and conformance with Contract requirements. • Assist the City with close-out acceptance documentation and confirmation that required deliverables have been received. City of Tukwila Lift Station 12Upgrade Amendment - Final Dusign. Bid Support, and Services During Construction 21 210-2007-007 February 2020 98 Parametrik Scope of Work Task 10 Assumptions • Construction duration is assumed to be 8 months; extended duration or significant delays may require acontract amendment. • Task 10 does not include directing the Contractor's work, approving construction means or methods, verifying quantities, or performing construction management or inspection services. • Assume construction kickoff meeting attended bythree Panamothxstaff members, with one person attending inperson. • Budget assumes 12 virtual progress meetings with three Parametrix staff and city PM for up toO.5hours each. • City will provide the Engineer withacnosstoCnntnaotorsubmitta|s,RF|a,payepp|ioations. and change requests via the City's designated platform and will provide direction on required response timeframoaand distribution. • Submittal reviews assume up to 30 distinct submittal items, each with one initial review and one resuhrnitte| review. Budget assumes up to 60 total reviews. Additional review cycles may require a contract amendment. —+ Review duration ksassumed upto7business days per submittal. • Budget assumes uptn20total RF|sand inlimited tninterpretation/clarification nfthe Contract Documents. Additional review caused by incomplete submittals or bidding errors may require scope adjustment. • RF|log tracking ialimited toRF|sassigned bythe City for response. • Budget assumes up to one pay application per month for the assumed construction duration (up to seven total). • Field observations are limited to general observation and do not constitute full-time construction inspection, quality control, acceptance testing, or supervision of the Contractor's work. • Site visits, when requested by the City, are assumed at up to eight visits, scheduled around critical activities (bypass installation, demolition, pump installation, start-uAetnl • Site visits assumed up to4hours on -site each, plus travel, and include one field observation report per visit. • Start-up/commissioning support limited to two on -site events plus remote review of testing procedures, • Change order support is limited to up to five CORs. Support for additional CORs may require a contract amendment. • Change orders resulting in design changes will require a contract amendment. • Start-up and commissioning support is observational and advisory only and does not constitute acceptance nfthe work orcertification ofsystem performance. —+ The Contractor remains fully responsible for ntart'up, testing, commissioning exonution, system tuning, safety, and compliance with manufacturer requirements. — Commissioning support includes uptntwo on -site events. City of Tukwila Lift Station 12Upgrade Amendment - Final Dooign. Bid Support, and Services During Construction 22 216-2007-007 February 2O20 99 Parametrik Scope of Work m All SCADA/controls integration with the City's existing systems will be performed with City integrator support. Parametrix's role is limited to review and coordination support unless otherwise authorized. • Record drawings based solely on Contra cto r-p rovid ed redlines and assume field markups shall helegible. • Additional site visits to verify as -built conditions are not included and may require a contract amendment, ifrequested. • Revisions resulting from incomplete, illegible, orlate Contractor redlines may require additional services. x Review ofO&M manuals islimited toconfirming presence and general compliance with specified requirements. ��x�&, � �h Deliverables .��,"�=°~=,��=.es • Progress meeting attendance and meeting summary, when requested (POFfile format). • Construction kickoff meeting summary (PDFfile format). • Submittal review and updated submittal log (PDFand Excel file format). • RF| response and updated RF| log (PDFand Excel file h)rma¢ • Field observation reports for each site visit (PDFfile fornnat). • Change order review memoranda or annotated COR responses (PDF file format). • Payment recommendation and updated pay application log (PDFand Excel file format). • Sta rt-u p/com mission i ng testing observation notes, punch list, and deficiency tracking (PDF or Excel file forma¢ • Record Drawings (PDFand AutoCAOfile forma¢ • Final closeout support documentation confirming review of O&M manuals, warranties, testing reports (PDFfile formot). �!1#111"', ates ani Fe E fi at Rates and fee estimate for this SOW is included as Exhibit D. This budget is reflective of this SOW, known information, and previous experience regarding the LOE on similar projects. l� �� rences Carollo (Carollo Engineers). 2014. City of Tukwila, WA, Final Comprehensive Sanitary Sewer Plan, C8noUoEngineers, Seattle, WA. City ofTukwila Lift Station 12Upgrade Amendment - Final Design, Bid Support, and Services During Construction 23 210-2007{07 February 2U28 100 Parame let's create tomorrow, together Exhibit B Survey Limits Adon14 WitAiz rw Att Sitr& " MOVSAVOWVA\ , . ' ,00140 44k ,vra400,4, City of Tukwila Lift Station 12 Upgrade Amendment 2 - Final Design, Bid Support, and Services During Construction 1 Scope of Work 216-2067-007 February 2026 101 Parame let's create tomorrow, together Exhibit C Preliminary Drawing Sheets Scope of Work Sheet Number Sheet Title 30% 60% 90% & Final G-1 Title Sheet, Vicinity Map, and Index X X X G-2 Symbols and Legend and Abbreviations X X X P-1 P&ID Process and Abbreviations X X X P-2 Wet Well and Pumps X X X P-3 Valve, Vault, HVAC and Generator X X X D-1 Demo Site Plan X X X D-2 Demo Section X X X D-3 Demo Section X X X C-1 Demolition Plan X X X C-2 Site Layout Plan and Survey Control X X X C-3 Plan and Elevations X X X C-4 Civil Details X X M-1 Mechanical Demolition Plan X X M-2 Pump and Piping Floor Plan X X M-3 Pump and Piping Sections X M-4 Mechanical Details X S-1 Structural Demolition Plan X X S-2 Structural Plans 1 X X S-3 Structural Plans 2 X X S-4 Structural Details X E-1 Electrical Legend and Abbreviations X X X E-2 Electrical One -Line Diagram and Load Calculations X X X E-3 Electrical Site Plan X X X E-4 Lighting, Receptacle and Grounding Plan X X E-5 Conduit and Cable Schedule X X E-6 Typical Motor Elementary Diagram X X E-7 Electrical Details X 1-1 Network Block Diagram X X 1-2 PCP-001 Wiring Diagram X X 1-3 PCP-001 Control System Block Diagram X X City of Tukwila Lift Station 12 Upgrade Amendment 2 - Final Design, Bid Support, and Services During Construction 1 216-2067-007 February 2026 102 let's create tomorrow, together Exhibit D Rates and Fee Estimate City of Tukwila Lift Station 12 Upgrade Amendment 2 - Final Design, Bid Support, and Services During Construction CO • eo k 216-2067-007 February 2026 103