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HomeMy WebLinkAboutAddendum - 1AMENDMENT NO. 1 TO AGREEMENT FOR LIND AVE SW STORM SYSTEM IMPROVEMENT PROJECT THIS AMENDMENT, dated for reference purposes only as March 21, 2025, is by and between WSP USA Inc. A New York corporation. The City and the Consultant are referred to collectively in this Amendment Amendment is effective as of the last date signed by both parties. Whereas, the City engaged the services of the Consultant under Agreement CAG-24-023, dated November 29, 2023, to provide necessary services for the Lind Ave SW Storm System Improvement Project Whereas, the Parties wish to amend the Agreement to change the scope of work, change the time for performance, and change the compensation in order to design water quality treatment retrofits. NOW THEREFORE, It is mutually agreed upon that CAG-24-023 is amended as follows: 1. Scope of Work: Section 1, Scope of Work, is amended to add work as specified in Exhibit A-1, which is attached and incorporated herein. 2.Time of Performance:Section 3, Time of Performance, is amended pursuant to the schedule(s) set forth in Exhibit B-1. All Work shall be performed by no later than June 30, 2026. 3. Compensation: Section 4, Compensation, is amended so that the maximum amount of compensation payable to Consultant is increased by $349,657 from $549,954 to $899,611, plus any applicable state and local sales taxes. The additional compensation shall be paid based upon Work actually performed according to the rate(s) or amounts specified in Exhibit C-1,which is attached and incorporated herein. 4.All terms of the Agreement not explicitly modified herein shall remain in full force and effect and such terms shall apply to Work performed according to this Amendment as if fully set forth herein. IN WITNESS WHEREOF, the Parties have voluntarily entered into this Amendment as of the date last signed by the Parties below. CAG-24-023, Adden #1-25 PAGE 2 OF 2 CITY OF RENTON By:_____________________________ CONSULTANT By:____________________________ Armondo Pavone Mayor, City of Renton Ginette Lalonde Senior Director, Seattle Water _____________________________ Date _____________________________ Date Attest _____________________________ Jason A. Seth City Clerk Approved as to Legal Form By: __________________________ Cheryl Beyer Renton City Attorney Contract Template Updated 06/17/2021 By:____________________________By:____________________________ 4/30/2025 Approved by Cheryl Beyer via email 3/21/2025 Task 50 - Assumptions The project duration is anticipated to be from approximately December 2024 through June 2026. If the project schedule is extended, it could result in additional project management effort. All coordination with Ecology will be through the City (applies to all tasks). Task 50 - Deliverables Project correspondence as needed. Monthly Progress Reports. Up to twenty 30 minute monthly status calls The City received a water quality retrofit grant to provide enhanced treatment along the project corridor where conveyance improvements are proposed (currently planned from the intersection of SW 43rd St and Lind Ave SW, north along Lind Ave SW to SW 39th Street and then west along SW 39th Street to outfall at Springbrook Creek). This alignment is preliminary and may be subject to change. This task will include the development of a Water Quality Retrofit Design Report for review by the City and Ecology. The report will include the following elements: - Review and identify potential locations for treatment BMPs and assess their feasibility (e.g., BMPs to be likely located around existing inlets and will need to consider available space (within ROW), sidewalk restoration, potential ADA compliance, maintenance access, and utility conflicts). This work will also include inlet spacing analysis calculations to ensure that when the new treatment units are located, they will meet City standards. - Review and selection of type of treatment BMP system (e.g., consider most appropriate BMP systems modular wetland, Filterra, EcoStorm Plus, BioPod or other City requested treatment type BMPs). Depending on the individual site constraints, different type BMP systems may be recommended for different locations. Treatment options will be evaluated based on factors such as existing infrastructure, landscape integration, utility conflicts, spatial constraints, cost, and maintenance requirements. - Identification of potential utility conflicts and need for additional potholing. The existing survey base map will be the basis for the stormwater quality pre-design. Additional survey needs, including potholing, will also be identified as part of the pre-design work. Consultant will assess whether planned potholes for the proposed trunkline can also be used to provide data for WQ treatment BMPs. Any potholes required will be completed under the Task 54 Allowance Supplemental Surveying and Potholing. - Preliminary sizing that includes a simple hydrologic model (using WWHM or MGSFlood software) to estimate water quality treatment and bypass flow rates. Sizing and analysis will follow sizing requirements as set forth in the 2019 Surface Water Management Manual for Western Washington (2019 SWMMM) to provide enhanced treatment of the individual catchment areas. - Sizing of the treatment units. - Preliminary plan and profile for each proposed BMP. - Assessing roadway restoration that may be required (e.g., sidewalk reconstruction, ADA compliance, curb replacement, landscape restoration/irrigation, pipe installation for downstream connection, and utility conflicts). - Estimating the construction cost of the water quality retrofits. Task 52 - Deliverables City Draft Preliminary Water Quality Retrofit Design Report (PDF and Word) Ecology Draft Preliminary Water Quality Retrofit Design Report (PDF and Word) Including properly calculated preliminary equivalent new/re-development area. Preliminary project GIS shapefile of planned areas that would receive treatment (in Ecology requested format) Task 52 - Assumptions Any survey or potholes required will be done under the Allowance Task. Consultant will attempt to collect and treat as much roadway area as possible along the alignment recognizing that some areas will not be feasible. City prefers stormwater BMP types that do not require vegetation maintenance. City to provide input on policy for replacing ramps when needed to meet ADA compliance. The Final Water Quality Retrofit Design Report will be completed at the 90% design submittal. Deliverables Guidance document Task 53 - Deliverables Draft Responses to Ecology Comments on Draft Report for City Review Responses to Ecology Comments for submittal to Ecology Task 55 - Deliverables 60% Plan Set 60% Special Provisions 60% Cost Estimate and Bid Schedule Task 55 - Assumptions Drawing list is preliminary and may be revised based on recommended improvements during the work of Task 52. It is assumed that private utilities will be responsible for relocating their facilities coordinate with these utilities. It is assumed the City will send the 60% plans to affected private utilities with request for relocation planning. It is assumed that the City will take the lead in coordinating the effort with the utility companies. The City will be responsible for printing and reproduction, if any needed. The City will perform any coordination required with property owners. Construction and permanent easements, if needed, shall be prepared and obtained by the City. It is assumed that the traffic control plans for individual retrofit BMPs will not be needed and that the overall traffic control plan for the storm trunk line can be annotated with notes and specifications to describe supplemental traffic control for BMP unit construction. A specific dewatering plan will not be included. Criteria for dewatering will be provided in the specifications based upon the geotechnical report. The Contractor will be responsible for developing a detailed dewatering plan. No temporary or permanent irrigation is assumed to be needed. Roadway pavement marking restoration will be specified to match existing. It is assumed design of pavement restoration marking is not required. The design budget assumes up to a total of four (4) new ADA ramps will be required where intersection quadrants are disturbed (e.g., where curb/gutter and sidewalks are disturbed with new catch basins in an intersection quadrant for the water quality retrofit). It is assumed that no work associated with electrical signals/push button pedestals, (e.g., crosswalk signal, power for lighting, or grading (beyond replaced sidewalk panels and new ramp) will be required. Task 56- Deliverables 90% Plan Set 90% Project Manual (PDF and Word) 90% Cost Estimate and Bid Schedule Task 56 - Assumptions Task 58 - Deliverables Final Design Report Task 58 - Assumptions Task 59 - Deliverables Responses to Ecology 90% Comments for City Review Responses to Ecology 90% Comments for Ecology Review Task 59 - Assumptions Task 60 - Deliverables Ex h i b i t B - 1 Ex h i b i t C - 1