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HomeMy WebLinkAboutStantec Consulting Services Wastewater Resource Recovery Facility Tertiary Filtration Facilities Prelim Design Mayor Robert E. Simison E IDiA N City Council Members Joe Borton Treg Bernt A H C Luke Cavener Public Works Brad Hoaglun Jessica Perreault Department Liz Strader Soo TO: Mayor Robert Simison Members of the City Council FROM: Clint Dolsby, P.E. Assistant City Engineer DATE: September 10, 2021 SUBJECT: TASK ORDER#10281 FOR THE WASTEWATER RESOURCE RECOVERY FACILITY—TERTIARY FILTRATION FACILITIES PRELIMINARY DESIGN WITH STANTEC FOR A NOT TO EXCEED AMOUNT OF $797,946.00 PURSUANT TO THE MASTER AGREEMENT APPROVED BY CITY COUNCIL OCTOBER 1,2020 I. RECOMMENDED ACTION A. Move to: 1. Approve Task Order 10281 with Stantec for the Wastewater Resource Recovery Facility — Tertiary Filtration Facilities Preliminary Design, for a not-to-exceed cost of$797,946.00. 2. Authorize the Purchasing Manager to sign the agreement. II. DEPARTMENT CONTACT PERSONS Clint Dolsby PE, Assistant City Engineer 489-0341 Warren Stewart PE, City Engineer 489-0350 Laurelei McVey, Director of Public Works 489-0259 III. DESCRIPTION A. Background The City of Meridian (City) Water Resource Recovery Facility (WRRF) is in year four of a ten- year NPDES compliance schedule to reduce phosphorus effluent loadings to Five Mile Creek as required in the 2017 NPDES permit. The City has previously completed a Wastewater Resource Recovery Facility Plan (WRRFP) in December 2018 and as part of that effort, a comprehensive Capital Improvement Plan was identified to address the various treatment challenges and regulatory updates. In order to address more stringent phosphorus removal requirements,the need Public Works Department . 33 E. Broadway Avenue, Suite 200,Meridian, ID 83642 Phone 208-898-5500 . Fax 208-898-9551 . www.meridiancity.org for additional tertiary filtration was identified as part of that effort. Tertiary membrane filters will allow the WRRF to meet stringent NPDES effluent Phosphorus limits, along with some potential future limits on emerging contaminants. B. Proposed Project This project will fund the design and construction of membrane filters at the Wastewater Resource Recovery Facility (WRRF). The project will include membranes with associated pumps, compressed air system, backwash tank and pumps, and scour air blowers, along with three inlet strainers and chemical day tanks/totes for cleaning with a building for equipment, and install covers on the membrane basins and feed channel. C. Consultant Selection Stantec was selected for this project due to their expertise in the design and analysis of wastewater treatment plants and their work on similar projects consisting of the same tertiary filtration technology that we are looking to utilize. IV. IMPACT A. Strategic Impact: This project meets our mission requirements to identify and prioritize work to anticipate,plan and provide public services and facilities that support the needs of our growing community, ensure modern, reliable facilities while maintaining financial stewardship and maintaining the ability to meet the changing permit limit requirements. B. Service/Delivery pact: Implementing tertiary filtration at the WRRF will support departmental objectives to develop and employ strategies that comply with current and pending National Pollutant Discharge Elimination System Permit (NPDES). C. Fiscal Impact: Project Costs WRRF Tertiary Filtration Facilities Preliminary Design $797,946.00 Total Cost $797,946.00 Project Funding FY 2022 Tertiary Filter Expansion(3590-96154) $1,500,000,00 Total Funding $1,500,000.00 VI. TIME CONSTRAINTS Council's approval will allow this project that will help meet stringent effluent phosphorus limits be completed on schedule to meet our compliance schedule with the Idaho Department of Environmental Quality. Page 2 of 3 VII. LIST OF ATTACHMENTS A. Task Order No. 10281 Department Approval: Page 3 of 3 0 CITY OF MERIDIAN Purchase Requisition ' �E IDIAN Purchasing Department VIM DATE OF —]:: 8/25/2021 33 E BROADWAY AVE, STE 106 CITY OF MERIDIAN REQUEST MERIDIAN, ID 83642 Dept Name PURCHASE ORDERNUMBER ON ALL INVOICES, TEL:(208)489-0417 • . •-- •• • •TO THIS ORDER FAX:(208)887-4813 AVAILABLE BUDGET AMOUNT $1,500,000.00 SUGGESTED IS BUDGET AMENDMENT REQUIRED? VENDOR Stantec No 777 E Riverpark Lane, Ste 150 Boise, ID 83706 CITY SUPPORT TICKET NO. PROJECT MANAGER PAYMENT TERMS FREIGHT TERMS F.O.B. REQUESTOR Clint Dolsb NET 30 PREPAID DESTINATION Clint Dolsb PROJECT NAME: Tertiary Filter Expansion Description of Purchase Quantity and Pricing ACCOUNTINGCODES DESCRIPTIONPART NUMBER • •ITY UNIT UNIT PRICE FUND DEPT EXPENSEORPROJECT/ TASK ORDER CONTRACT/PROJECT DESCRIPTION CODE GLACCOUNT# COMMITMENT# TOTAL AMOUNT Tertiary Filter Expansion 1 $ 797,946.00 60 3590 96154 11281 $ 797,946.00 $ - $ - $ - $ - $ - $ - NOTES: Council Approval Date: 10-05-2021 $797,946.00 THORIZED DEPARTME SIGN URE i CONTRACT CHECKLIST I. PROJECT INFORMATION Date: 8/25/2021 REQUESTING DEPARTMENT Public Works Project Name: Tertiary Filter Expansion I Project Manager: Clint Dolsby Contract Amount: $797,946 Contractor/Consultant/Design Engineer: Stantec Is this a change order? Yes ❑ No 0 Change Order No. II. BUDGET INFORMATION (Project Manager to Complete) III. Contract Type Fund: 60 Budget Available(Purchasing attach report): Department —66 3590 Yes 0 No ❑ Construction ❑ GL Account 3y30 96154 FY Budget: 22 Task Order 0 Project Number: 11281 Enhancement: Yes No ❑ Professional Service ❑ Equipment ❑ Will the project cross fiscal years? Yes❑' No ❑ Grant ❑ IV. GRANT INFORMATION-to be completed only on Grant funded projects Grant#: Wage Determination Received Wage Verification 10 Days priorto bid due date Debarment Status(Federal Funded) N/A N/A N/A N/A Print and Attach the determination Print,attach and amend bid by addendum(if changed) www.sam.gov Print and attach V. BASIS OF AWARD BID RFP/RFQ TASK ORDER ' Award based on Low Bid Highest Ranked Vendor Selected I Master Agreement Category 2a I I(Bid Results Attached) Yes ❑ No ❑ (Ratings Attached) Yes ❑No ❑ (Date MSA Roster Approved: 10/1/2020 1 Typical Award Yes ❑ No ❑ If no please state circumstances and conclusion: N/A Date Award Posted: N/A 7 day protest period ends: VI. CONTRACTOR/CONSULTANT REQUIRED INFORMATION PW License N/A Expiration Date: N/A Corporation Status GOOdStanding Insurance Certificates Received(Date): 5/4/2021 Expiration Date: --5/1/ D Rating: A+ Payment and Performance Bonds Received(Date): N/A Rating: Builders Risk Ins.Req'd: Yes ❑ No ❑ If yes,has policy been purchased? N/A (Only applicabale for projects above$1,000,000) VII. TASK ORDER SELECTION (Project Manager to Complete) Reason Consultant Selected 1 Performance on past projects Check a//that apply ❑ Quality of work ❑ On Budget ❑On Time ❑ Accuracy of Construction Est 0 2 Qualified Personnel 0 3 Availability of personnel ❑ 4 Local of personnel Description of negotiation process and fee evaluation: This task order includes the preliminary design services for this project. Stantec submitted a draft task order for this work which was reviewed by the City. Stantec revised the task order based on City comments and brought it into alignmentwith industry standards and Public Works supports the approval of this task order. az t f�WRR-T nE terSupervlsor am�Fl e a e rove Vill. AWARD INFORMATION Date Submitted to Clerk for Agenda: 9/28/2021 Approval Date 10-05-2021 By: Council Purchase Order No.: Date Issued: WH5 submitted (Only for PW Construction Projects) NTP Date: Contract Request Checklist.5.2 4.2016.Final TASK ORDER NO. 11281 Pursuant to the MASTER AGREEMENT FOR PROFESSIONAL SERVICES BETWEEN CITY OF MERIDIAN (OWNER) AND STANTEC (ENGINEER) This Task Order is made this day of October 1, 2021 and entered into by and between the City of Meridian, a municipal corporation organized under the laws of the State of Idaho, hereinafter referred to as "City", and accepted by STANTEC CONSULTING SERVICES, INC., hereinafter referred to as "Engineer" pursuant to the mutual promises, covenant and conditions contained in the Master Agreement (category 2a) between the above-mentioned parties dated October 1, 2020. The Project Name for this Task Order is as follows: WRRF TERTIARY FILTRATION FACILITIES 1.0 PROJECT UNDERSTANDING SUMMARY The City of Meridian (City) Water Resource Recovery Facility (WRRF) is in year four of a ten-year NPDES compliance schedule to reduce phosphorus effluent loadings to Five Mile Creek as required in the 2017 EPA administered NPDES permit. The City has previously completed a Wastewater Resource Recovery Facility Plan (WRRFP) in December 2018 per the facility planning process identified in the Idaho Administrative Procedures Act (IDAPA), section 58.01.16. As part of that effort, a comprehensive Capital Improvement Plan was identified to address the various treatment challenges and regulatory updates. In order to address more stringent phosphorus removal requirements, the need for additional tertiary filtration was identified as part of that effort. The City has tasked Stantec Consulting Services Inc. (Stantec) to further evaluate and progress those concepts. Accordingly, this project consists of engineering services to implement tertiary filtration improvements. These services are for the preliminary and final design, bidding support, and engineering services during construction for a new 22.3 million gallon per day (mgd) peak hour filtration facility, plus supporting ancillary improvements. The design of the tertiary filtration facility improvements will allow for expandability in the future to reach buildout flows, which are anticipated to be 42 mgd (peak hour) by 2074. Design will incorporate elements to allow future expansion to this capacity, such as larger diameter piping and space within buildings, pump stations, etc. for future equipment. No tertiary equipment or support systems will be designed to meet flows that exceed 22.3 mgd as part of this project. Task Order 11281 WWRF Tertiary Filtration Facilities Page 1 of 21 Stantec It is assumed that this will be a membrane facility consistent with the WRRFP, subject to additional evaluations and recommendations to be made within this project during preliminary design. PHASES OF WORK Preliminary Design — This work is generally described as review of existing information, identification of design criteria, alternatives analysis, and preliminary design (30%). These services are included in this TO 11281 (T01). Technology Selection — This work involves bench scale and pilot/full-scale testing to determine characteristics of the tertiary filtration influent water quality, as well as the preferred technology for accomplishing WRRF effluent water quality goals. These services will be included in TO 2, NOT included in this Task Order. Final Design — This work is generally described as progressing the design through bidding including 60%, 90% (permitting set), and bid documents along with providing bidding services to assist the City in awarding the construction contract. These services will be included as part of future TO 3, NOT included in this Task Order. Construction Phase Services — This work is generally described as services to assist the City during construction including submittal reviews, response to contractor questions, clarifications and change items. These services also generally include field observations, final inspections, record drawings and startup and commissioning services. These services will be included as part of future TO 4, NOT included in this Task Order. Specific Project Requirements Stantec has identified several requirements for this project that will be used as a framework for establishing the preliminary and final design guidelines and expectations for the work. These project requirements include schedule, criteria, and facility design elements. Preliminary schedule requirements: • Preliminary Design start October 2021 • Final Design to start by October 2022 • Bid award by November 2023 • Substantial completion by June 30, 2025 • Startup and commissioning complete by June 30, 2026 • NPDES compliance date June 30, 2027 (expected to be administered by State of Idaho) Preliminary design criteria requirements: • Total Phosphorus - 8.5 lb/day (May-Sep monthly average) Task Order 11281 WWRF Tertiary Filtration Facilities Page 2 of 21 Stantec • Total Phosphorus — 29.8 lb/day (Oct-Apr monthly average) • Flows (2040) — 14.2 MGD (peak month) • Flows (2040) — 22.3 MGD (peak hour) • Maintain Class A Reuse Permit The following project elements in Table 1 are anticipated to be designed and constructed under this project. These serve as the basis for scoping and engineering services fee (fee). The outcome of the preliminary design (TO 1) will determine the final project approach and may modify these assumptions. Table 1. Project Design Elements. Element / Process / Description Major Equipment Type Facility Assumed Sitework Civil sitework n/a Utilities and Yard Piping n/a Electrical sitework New load center anticipated, buried ductbanks Landscape architecture n/a Tertiary Influent Above-grade PS Vertical turbine or vertical mixed Pumping Station flow pumps Concrete wetwell n/a Tertiary Pretreatment Chemical Coagulation TBD. Anticipated to be in line with Building passive/static mixing, or via flash mixing, flocculation, and Fine Screening sedimentation TBD. Anticipated to be 0.5 to 1 Equalization mm strainers or fine screens. Parallel Treatment for TBD pending evaluation. Peak Flow Management TBD pending evaluation. Tertiary Membrane Membrane based Micro or ultra- filtration. and Ancillary Process treatment Configuration (pressure vessel or Building submerged cassette) TBD. Feed and backwash/reverse flow Ancillary equipment pumps, air scour blowers, membranes, tote-based chemical cleaning systems Dedicated operations room with PLC/HMI, limited workstations, SCADA/Operations sample and analysis benchtop. Center MCCs and ancillary power system components. Electrical room Chemical Storage and Bulk storage and feed TBD. May be retrofit expansion of Feed Building pumps existing facility, or new dedicated tertiary chemical complex. Task Order 11281 WWRF Tertiary Filtration Facilities Page 3 of 21 Stantec Residuals Handling Transfer Pumping Vertical turbine pumps Station (secondary recovery not anticipated) Waste Washwater n/a Equalization / Wetwell Odor Management None anticipated n/a 1.2 General Project Approach The following describes assumptions and conventions that were used in developing this scope of services: 1.2.1 Codes, Regulations, and Design Standards City design standards, as applicable, will be used. The facilities will be designed in accordance with standards, codes, and regulations in effect as of October 2021 including compliance with Idaho Department of Environmental Quality (DEQ) regulations. Changes in codes and regulations which occur after the project start will be considered a change in scope. Stantec will be using specifications suited specifically for the design- bid-build delivery method based on its standard documents. The City will be responsible to provide front-end procurement documents (Division 00 and 01) for the construction bid. Stantec will be responsible to provide all technical specification sections. 1.2.2 Design Approach The design will be performed using Stantec's internal design standards and approaches, including digital delivery methodologies: 3D design, building information models (BIM), and intelligent P&IDs. BIM models will be produced to a level of development (LOD) 300. This LOD provides an accurate model where elements are defined with specific assemblies, precise quantity, size, shape, location and orientation are detailed. Drawings will be produced from these models for City review. CAD and BIM software: • Physical models for structures: Revit family of products • Civil: Civil 3D (The Revit model is fixed in space in this platform) • Instrumentation and Control: Bentley Open Plant Modeler • Drawings will be prepared in ANSI D format (22 by 34 inches). 1.2.3 Opinions of Probable Construction Cost Stantec will prepare opinions of probable construction cost (OPCC) using the appropriate estimate classes, standard of care, and employing pertinent guidelines as established by the Association for the Advancement of Cost Estimating (AACE). OPCCs will be prepared for each set of construction documents identified in the detailed scope that follows. City acknowledges that Stantec has no control over costs of labor, materials, competitive bidding environments and procedures, unidentified field conditions, financial Task Order 11281 WWRF Tertiary Filtration Facilities Page 4 of 21 Stantec and/or market conditions, or other factors likely to affect the OPCC of this project, all of which are and will unavoidably remain in a state of change, especially in light of the high volatility of the market attributable to Acts of God and other market events beyond the control of the parties. City further acknowledges that this is a "snapshot in time" and that the reliability of this OPCC will inherently degrade over time. City agrees that Stantec cannot and does not make any warranty, promise, guarantee, or representation, either express or implied that proposals, bids, project construction costs, cost of operating, or cost of maintenance will not vary substantially from Stantec's good faith OPCC. 1.2.4 Land Acquisition It is anticipated this project does not include any form of land acquisition. 1.2.5 Project Delivery Model This scope of services is structured for a conventional design-bid-build project delivery model. 1.2.6 Project Staging and Sequencing These requirements are always project specific and will be defined through development of the Preliminary Engineering Report (PER). Task 1 - Preliminary Design 2.0 Stantec will prepare a series of technical memoranda to supplement previous planning efforts. These memoranda will be further developed into a Preliminary Engineering Report (PER) to document technical and engineering decisions, which will be used as the basis for development of detailed design documents. It is anticipated that this document will not reiterate work previously performed in the master planning phase of this project, but in a concise and complete way summarize updates to design criteria and intent since the completion of the facility plan. The PER defines the contractual basis for remaining design deliverables, schedule, and cost associated with the Meridian WRRF. The PER will present a text and table summary of equipment comparisons, selection process, system operating concepts and maintenance requirements, technical memoranda, general site plan, process schematics and flow diagrams, design criteria for each process, hydraulic profile, preliminary P&ID's, process unit layout drawings, architectural concepts, utilities and electrical single-line diagrams. Copies of pertinent meeting minutes will be contained in an appendix. The main activities to be performed by Stantec as part of preliminary design are as follows: • Project management and coordination with external and internal team members (Section 2.1) • Data collection and review of existing field conditions to prepare for design efforts (Section 2.2) • Permitting support for upgrades and expansion of the tertiary filtration facilities (Section 2.3) Task Order 11281 WWRF Tertiary Filtration Facilities Page 5 of 21 Stantec • Documentation of design constraints, design criteria, and design direction in the PER and supporting documentation (Sections 2.4 and 2.5) • Preparing preliminary design documents based on design constraints and project objectives in accordance with City and Stantec design standards and this scope of services (Section 2.6) 2.1 Project Management and Coordination The project management and coordination work for this task order will include: 2.1.1 Project Management Plan Stantec will develop a general workplan or project execution plan (PXP) that defines the delivery approach, staffing, responsibilities, schedule, risks, and project deliverables that will be a baseline guide and a working document throughout the project. The PXP will be reviewed and update on a quarterly basis. The PXP will also include a Quality Management Plan (QMP) which will define the specific processes and procedures to be used for this project. 2.1.2 Progress Reporting Meetings Stantec will keep the City advised of the status of the design progress. This coordination will include monthly project management meetings with the City with on average three Stantec staff to communicate and document identified project risks, action items, change of conditions, schedule updates, financial status, and general project status. The meetings are expected to be 60 minutes in duration, and Stantec will coordinate and submit meeting notes within two working days of the meeting. Separate technical workshops will be scheduled outside of these monthly progress meetings. 2.1.3 Internal Team Coordination Stantec will meet with design team leads on a bi-weekly basis to coordinate discipline status, identify risks, and provide a forum for issues or questions that need to be communicated or coordinated with the City or that need further attention within the design team. 2.1.4 Progress Tracking and Reporting Stantec will prepare and maintain tracking tools for monthly reporting and invoicing to the City. The invoicing will include monthly status updates on a task-by-task basis, physical percent complete status and any changes or new risks identified in the billing period. 2.2 Data Collection and Field Investigations Stantec will need to obtain various data from the City and collect baseline information to being our preliminary design. • Survey - It is expected that site survey information will be needed for the preferred locations for the improvements. Stantec will use existing survey Task Order 11281 WWRF Tertiary Filtration Facilities Page 6 of 21 Stantec data provided by the City for preliminary design efforts and engage the services of a surveyor during future final design efforts. • Geotechnical — Stantec will request from the City and review the existing geotechnical information. If inadequate geotechnical information is available at the preferred site(s) for the new tertiary filtration facilities and improvements, Stantec will subcontract with a local geotechnical firm for the needed information during future final design efforts. Stantec shall be entitled to reasonably rely upon the information and data provided by the City or obtained from generally acceptable sources within the industry without independent verification except to the extent such verification is expressly included herein. 2.2.1 Existing Data Collection and Review As part of the scoping effort, Stantec has already requested: • Historical and anticipated flow and load data (updated since the 2018 Facility Plan) • Plant performance data electronically from 2017 — present • Previously completed phosphorus speciation study • Secondary effluent particle size distribution study. Stantec shall review the above background documents and information provided by the City. The following additional documents will be requested: • Previous additional relevant reports and supporting background files • Current and historical water quality and flow data • Current and historical SCADA data for existing facilities • Current and historical power consumption data for the entire WRRF • Staff input and observations • Preferred City staff contact information • Facility record information as needed • Available record drawings of the existing facilities (preferably dgn or dwg format). • O&M manuals related to the existing operating controls. • Available utility information in GIS format (for the City or known utilities owned by others within the project area) • Available design standards, standard details, and specifications; and • Other pertinent information as determined during this project 2.2.2 Survey — Not Used Stantec will use existing survey information provided by the City for documentation and design drawings. 2.2.3 Geotechnical — Not Used If required will be subcontracted during future contracts. Task Order 11281 WWRF Tertiary Filtration Facilities Page 7 of 21 Stantec 2.2.4 Dewatering Investigation — Not Used It is not anticipated that a site-specific dewatering investigation will be required. If the geotechnical investigation demonstrates the need for dewatering, a preliminary dewatering investigation can be authorized as supplemental services. 2.2.5 Subsurface Investigation — Not Used If required will be subcontracted during future contracts. 2.2.6 Closed Circuit Television — Not Used It is not anticipated that closed circuit television will be required for any existing utilities on the site, or at the points of interconnection. If during preliminary design need for these services arises, they can be authorized as supplemental services. 2.2.7 Water Quality Sampling and Analysis — Not used It is not anticipated that additional sampling and water quality analysis will be required, other than what is specifically described as part of a bench or pilot testing activity, which is scoped per TO 2. 2.3 Permitting Support Stantec will support the City in while the City identifies necessary design phase permits for activities related to the project and detail the requirements for application for the permits, permit deadlines, contact persons, and processing time. It is assumed that the City will lead permitting efforts for this project, while Stantec will provide support and coordination with design activities and deliverables. Stantec will be available to meet with the City and the Idaho DEQ as part of this coordination effort. Stantec will submit the Preliminary Engineering Report and preliminary design drawings to Idaho DEQ for agency review. 2.4 Studies and Technical Memoranda The following studies and technical memoranda described in Section 2.4 will be initiated as part of the preliminary design phase. Draft technical memoranda will be produced in advance of the PER. Final memoranda will be submitted as chapters of the PER. 2.4.1 Flow and Load Confirmation — Not used It is anticipated that the 2018 WRRFP flow and load projections will be used for this project for establishing relevant tertiary filtration criteria. Per discussion with the City, the WRRFP will be updated by others under a separate contract, and any updates to water quality or criteria will be evaluated when available. Changes in flow will be addressed in collaboration with City staff to ensure that the design incorporates flexibility to add or remove process trains as needed to achieve the required treatment capacity. 2.4.2 Bench Testing and Water Quality Evaluation Under this task, Stantec will evaluate the City's relevant historical information for: • Phosphorus speciation data • Secondary effluent particle size distribution Task Order 11281 WWRF Tertiary Filtration Facilities Page 8 of 21 Stantec • Current performance data for cloth media filtration Per discussion with the City, it is understood that these historical data sources were provided prior to the last secondary process upgrades and that new supplemental data may be needed to predict future tertiary influent water quality. Evaluation efforts are based on the following supplemental bench testing and water quality evaluations recommended by Stantec: • Coagulant Jar Testing — Modeling and bench testing to select appropriate coagulant(s), dose(s), mixing energy, and contact time for definition of reactive and nonreactive phosphorus fractions, and optimization of phosphorus removal and filter performance. These recommendations would be used to establish pilot and preliminary design bases, as appropriate • Phosphorus Speciation and Filterability — Bench testing using the coagulant(s) selected from jar testing, to confirm secondary effluent phosphorus speciation and theoretical filterability and process performance potential. These outcomes would be used to inform the filter technology evaluation and recommendations • Particle Size Distribution - Bench testing using the coagulant(s) selected from jar testing to predict filter loading, prescreening needs, and filter performance. These outcomes would be used to inform the filter technology evaluation and recommendations It is assumed that City staff will provide all laboratory and analytical work for bench testing and water quality evaluation efforts. Stantec will oversee testing and provide guidance on the type of tests and data to be gathered but will not be involved with day- to-day efforts of the testing. The objectives for sampling, quantity, frequency, and type of tests will be documented in a testing plan, which will be prepared by Stantec. Stantec will also evaluate the need for pilot or full-scale testing (e.g., chemical coagulation upstream of existing cloth media filters) throughout Task 2.4.2. Upon completion of this task, Stantec will provide a recommendation for additional experimental testing in the draft technical memorandum for this task. Using the recommendations presented in the draft technical memorandum, Stantec will revise the scope of work for TO 2, which is included in preliminary draft form as Sections 3 through 5. Revisions for TO 2 will be completed concurrently with Task 2.4.3 efforts. 2.4.3 Filter Technology Evaluation Based on the outcomes of Task 2.4.2, Stantec will revisit and update filter technology selection. This task would address three key areas of focus: • Candidate filter process identification and evaluation • Filtration enhancement schemes (e.g., parallel treatment, equalization), and • Ancillary impacts and plant integration The following technologies and applications are assumed for evaluation under this task: • Conventional chemical coagulation for filtration pretreatment Task Order 11281 WWRF Tertiary Filtration Facilities Page 9 of 21 Stantec • Electro-coagulation for filtration pretreatment • Hollow fiber membrane filtration (using either submerged or pressure vessel configurations) as a full flow process • Deep bed dual media filtration as a full flow process • Cloth media filtration (either via retrofit or replacement of existing facilities) as a pretreatment to membranes • Cloth media filtration (either via retrofit or replacement of existing facilities) as a parallel treatment process to provide peak flow management and filter capital and O&M cost optimization • Peak flow equalization of secondary effluent (either inline or offline to main flow) to provide peak flow management and filter capital and O&M cost optimization 2.4.4 Siting Stantec will investigate both greenfield and retrofit siting options for the recommended process and infrastructure improvements per Table 1. 2.4.5 Hydraulics Stantec will assess the existing hydraulics between secondary treatment and the final outfall and make recommendations to address any challenges under the flows for two scenarios: planned 2040 and the buildout flow condition in 2074. Stantec will also assess return flow management needs and potential impacts to the existing plant operation. This task will be dependent on the outcomes of Tasks 2.4.3 and 2.4.4. This task will also include development of preliminary tertiary filtration and filtration backwash return flow hydraulic profiles. Stantec will also assess the risk of unsteady flow effects and maldistribution of flows among parallel treatment trains and make recommendations for more detailed design investigations (e.g., computational fluid dynamic or physical models) as needed. 2.4.6 Control Narrative TM Stantec will coordinate with the City of Meridian to develop a preliminary system control narrative (philosophy). A preliminary workshop will be held to: • Discuss current tertiary filtration and plant control philosophy as it is anticipated to be relevant to the new infrastructure being developed • Establish high-level approaches for new systems at the WRRF • Review a preliminary overall control system architecture • Review and finalize a draft outline for the Control Narrative TM It is anticipated that the Control Narrative TM will present basic control philosophy for: 1. Interfacing with (but not replacing the controls for) existing infrastructure and conveyance 2. Establishing new tertiary filtration process control requirements Task Order 11281 WWRF Tertiary Filtration Facilities Page 10 of 21 Stantec 3. Establishing/updating final effluent water system monitoring and control requirements for permitting requirements 4. Equipment/asset numbering conventions Meridian WRRF process control narratives as described above will address the following elements: • Overall water system control intent • Influent flow and quality monitoring and control • Influent feed tanks and influent pumping systems • Tertiary filtration pretreatment systems and ancillary components • Tertiary filtration systems and ancillary components • Chemical storage and feed • Miscellaneous systems (i.e., access control and monitoring, HVAC integration, fire system integration, and sump pumps) • Critical process alarms and interlocks • Final effluent system monitoring and control This memorandum will be preliminary in nature and is meant to establish system-wide intent; it will be a supplement to the PER and preliminary design documents summarized later in this scope of work. Asset data forms required by the City will also be provided as a supplement to the Control Narrative TM. Additional control system detail and elements will be addressed during final design for plant startup and shutdown requirements. The Control Narrative TM will be superseded by final design documents including control system architecture diagrams, specifications, control strategies, and Piping and Instrumentation Drawings (P&IDs). Following submission of the draft TM, a review workshop will be held with City staff to finalize approach and allow further development of the PER. 2.5 Preliminary Engineering Report (PER) The PER will be executed in accordance with IDAPA, section 58.01.16. Through this process, the intent is to make all significant project design decisions before the start of Final Design (TO 3). At the end of Preliminary Design (TO 1), major design elements shall be fixed, and major equipment, footprints, major structural elements, and pipeline alignments shall be well-defined and established. The extent of the design, the number and type of drawings, and the number of construction packages shall be established. Stantec will develop the preliminary design to the point where the feasibility is confirmed, the scope is well defined, and costs can be accurately estimated. Considerations related to filter technology expandability and oversizing for rapid adaptability to flow and water quality changes will also be addressed in the PER. The PER is anticipated to consist of a compendium of previously prepared TMs, with expanded content to meet requirements as stated above. The report organization is expected to follow: EXECUTIVE SUMMARY Task Order 11281 WWRF Tertiary Filtration Facilities Page 11 of 21 Stantec 1.0 INTRODUCTION 2.0 WATER QUALITY PROJECTIONS 3.0 PROCESS DESCRIPTION AND DESIGN CRITERIA 4.0 PLANT HYDRAULICS 5.0 ELECTRICAL POWER SYSTEM 6.0 UTILITIES AND CONNECTIONS 7.0 FUNCTIONAL ASPECTS 8.0 CONTROL NARRATIVES 9.0 PROJECT IMPLEMENTATION 10.0 REFERENCES LIST of TABLES LIST of FIGURES APPENDICES Recommendations for approaches to equipment procurement, updates to final design schedule, and updates to construction schedule will be documented under Section 9 — Project Implementation. 2.6 Preliminary Design Documents (30% Design) The preliminary design will consist of the PER and supporting drawings, lists, and elements as described herein. Drawings and other elements as described below will be appended to the PER. Refer to Exhibit C for the preliminary list of drawings. The list of drawings will be updated as part of the PER as described in Section 2.6.1. 2.6.1 Drawing and Design Development This list presents the drawings, technical information, and preliminary design documentation that are anticipated during preliminary design. Design activities for each item listed in the following list will occur during TO 1. However, not all items will be presented in a deliverable. Project deliverables are noted separately within this document. General: • Preliminary Building Information Models (BIM); submitted as PDFs • Preliminary drawings • Updated list of remaining drawings anticipated • Updated list of specifications anticipated • Preliminary equipment list (major equipment) Process-Mechanical: • Process design criteria • Design flow rates Task Order 11281 WWRF Tertiary Filtration Facilities Page 12 of 21 Stantec • Influent quality • Effluent quality requirements • Phasing, sequencing, schedule, and expansion requirements • Process and major equipment selection • Redundancy requirements • Overall process flow diagram • Process narratives (brief descriptions) • Mass balances • Estimate of consumable quantities (energy, chemicals) and residuals • Define process flow streams, legends, and abbreviations • Hydraulic profiles • Pipe materials and valve types • Coating and lining requirements • Equipment material selection • Vendor drawings and information Civil: • Site civil and site utility plans • Updates, site drainage concepts, if required by City reviewers • Define limits of flood plain/ issues • Zoning and local site development requirements • Identify environmentally sensitive areas such as wetlands and hazardous waste areas • Roadway and paving sketches and preliminary traffic plan • Defined survey, mapping and geotechnical needs for final design, if necessary Landscape Architecture: • Define landscaping expectations • Develop draft list of preferred plants and groundcover • Draft site plan Instrumentation & Control: • Equipment and area tagging convention • Control philosophy description • Control system block diagram, including integration with SCADA System • P&IDs with pipe and valve sizes and materials • Onsite communication system requirements • Define or recommend control system procurement methods and software development. • Document City's control system philosophy/architecture and other information needs Architectural: • List of applicable codes and life safety issues for the building classification Task Order 11281 WWRF Tertiary Filtration Facilities Page 13 of 21 Stantec • List of controlling regulatory agencies and contacts • Building floor plans showing rooms and major equipment • Building elevations, building finishes and architectural details • Building classification list and HVAC R-values Structural: • Structural design concept and design criteria • Structural steel sketches and details • Structural concrete plan sketches • Structural foundation sketches and details • Document existing building or structures requiring upgrade or modifications. • Document structural problems associated with existing plant facilities to be modified in the project • Identify local building codes and local design criteria Building Mechanical Services: • Plumbing design concepts, sanitary sewer design, etc. • Fire protection and security system requirements • Establish ambient design conditions • Document local building codes and requirements • Document odor system requirements • Air Flow Schematic • Conceptual Equipment Arrangements Electrical: • Electrical/communications/security design concepts • Preliminary electrical single lines • Electrical equipment location plan • Plan to bring existing facilities into code compliance where necessary • Any new structures will include LED lighting. Existing facilities that will remain will be considered for LED lighting under TO 3. • Schedule of hazardous and corrosive locations • Document the need and sizing for onsite standby and/or emergency power • Define modes of generator operating, interconnection requirements and load shedding • Document redundancy requirements for power supplies and power distribution • Preliminary site plans showing major equipment locations and duct bank route • Preliminary electrical room plans including electrical equipment, instrumentation and controls, and special system panel locations • Electrical load list Task Order 11281 WWRF Tertiary Filtration Facilities Page 14 of 21 Stantec 2.6.2 Quality Control Stantec will perform internal technical review prior to submittal to the City, per the approved Quality Management Plan. Stantec's engineers of record will review and approve all deliverables and critical calculations prior to sending for internal independent reviews by a qualified senior engineer or technician. In addition, all documents requiring multiple disciplines will be reviewed for interdisciplinary coordination. All Stantec reviews will have documented review comment and responses. Only upon the completion of this level of quality control will deliverables be sent to the City or permitting agencies for review. City and other review comments will be addressed, formally responded to and documented. 2.6.3 Review Workshops Stantec will hold a preliminary project kickoff meeting with the City and five additional review workshops with City Staff at the end of the City's review of the memoranda, PER, and preliminary design documents. These workshops will be held to discuss staff review comments, clarify elements in the submittal, and confirm approach to allow the report to be finalized. There shall be an initial kickoff meeting, plus a total of five review workshops. 2.7 Construction and O&M Cost Updates 2.7.1 Progressive Cost Model Stantec will develop an initial cost model following project initiation and the development of design criteria to establish baseline project cost expectations. This model will be trended during preliminary design. Changes in cost expectation will be tracked and shared with the City at progress meetings, to allow for efficient design and cost management. The focus will be to avoid cost over-run and achieve budgeted project goals. It is anticipated that this estimate will be Class 5 per AACE. Note that a Class 5 OPCC is generally prepared based on limited information, and subsequently have fairly wide accuracy ranges. Class 5 estimates have typical accuracy ranges of-20% to -50% on the low side, and +30% to +100% on the high side, depending on the technological complexity of the project, appropriate reference information, and the inclusion of an appropriate contingency determination. Stantec will also prepare a preliminary Operations and Maintenance (O&M) cost evaluation for the preliminary design. This estimate will include chemical, power, staff, maintenance and other factors for compilation into an annual O&M budget expectation for the new facilities. This estimate will be delivered with the OPCC. Note that staffing and labor requirements will be budgeted based on industry normal practices, as informed by current City practices for similar facilities, where available. 2.7.2 30% Cost Opinion At the completion of the PER and Preliminary Design Documents, Stantec will perform a bottom-up estimate to replace the previous Class 5 estimate and trend log. Stantec will provide a Class 3 OPPC, which will form the basis for subsequent bottom-up estimates. Task Order 11281 WWRF Tertiary Filtration Facilities Page 15 of 21 Stantec Class 3 estimates have typical accuracy ranges of-10% to -20% on the low side, and +10% to +30% on the high side. Deliverables • Existing Data Collection and Review (Section 2.2.1) — No deliverables included; if necessary, additional information requests will be submitted • Survey Deliverables (Section 2.2.2) — Not included, survey and related design efforts will be performed during final design (future T03) • Geotechnical Deliverables (Section 2.2.3) — Not included, geotechnical investigation and related design efforts will be performed during final design (future T03) • Subsurface Investigation (Section 2.2.4) — Not included, subsurface investigation, potholing, and related design efforts will be performed during final design (future T03) • Permitting Support (Section 2.3): • Draft permitting memorandum with a table of the permits, technical deliverables required, contact person from the permitting authority, estimated schedule, and permit fees. • Final permitting memorandum • Bench Testing and Water Quality Evaluations (Section 2.4.2): • Testing plan • Draft technical memorandum • Final technical memorandum will be submitted as part of the Final PER • Filter Technology Evaluation (Section 2.4.3): • Draft technical memorandum • Final technical memorandum will be submitted as part of the Final PER • Siting (Section 2.4.4): • Draft technical memorandum • Final technical memorandum will be submitted as part of the Final PER • Hydraulics (Section 2.4.5): • Preliminary hydraulic profiles • Draft technical memorandum • Final technical memorandum will be submitted as part of the Final PER • Control Narrative TM (Section 2.4.6): • Preliminary overall control system architecture • Draft outline for the Control Narrative TM • Initial workshop notes Task Order 11281 WWRF Tertiary Filtration Facilities Page 16 of 21 Stantec • Draft Control Narrative TM • Final TM will be submitted as part of the PER • Asset data forms for major equipment • Preliminary Engineering Report (PER) (Section 2.5): • Draft PER • Final PER with attachments • Preliminary Design Documents (Section 2.6): • Design documents will serve as attachments to PER (see Section 2.5) • Quality Control (Section 2.6.2): • Responses to City comment response log • Review Workshops (Section 2.6.3): • Meeting notes following each workshop • Updates to Owner Comment Log following each workshop • Updates to Design Decisions Log following each workshop • Anticipated Workshops: (1) Project Kickoff Meeting (2) Design Criteria Review Workshop (3) Bench Testing and Water Quality Evaluation Review Workshop (4) Filter Technologies Review Workshop (5) Facility Siting Workshop (6) Control Narrative Review Workshop • Progressive Cost Model (Section 2.7.1): • Initial OPCC, Class 5 • 30% Cost Opinion (Section 2.7.2): • Preliminary Design OPCC, Class 3 ASSUMPTIONS While preparing our scope of services and fee schedule, we have made the following assumptions: General Project Approach (Section 1.2): • The scope of services for TO 1 is based on a maximum of three separate buildings: Tertiary Pretreatment Building, Tertiary Membrane/Ancillary Process Building, and Chemical Storage/Feed Building. The two pump stations for influent to the tertiary process and residuals handling transfer will either be housed within one of the three buildings as a separate room or will be exterior pump stations. Task Order 11281 WWRF Tertiary Filtration Facilities Page 17 of 21 Stantec • Buildings will be industrial type masonry and premanufactured metal buildings as needed to match existing site architectural standards. • Site drainage study results will be shown on a Grading and Drainage Plan notes sheet. No report will be submitted. • Extent of existing facility decommissioning/demolition activities to be determined during final design under TO 3. • Electrical conduit routing will not be shown on plan sheets. • Deep foundation systems will not be required. • Additional backup power generator is not assumed to be part of this project. Progress Tracking and Reporting (Section 2.1.4): • Invoicing will be performed monthly unless otherwise coordinated with the City due to inactivity • Technical review meetings and workshops are not part of the Task 1 services • Progress reporting meetings are assumed to be virtual or with local Stantec staff travelling to Meridian unless otherwise requested or coordinated for external staff to attend • Change logs and other documentation requested by the City will be kept and maintained on a Stantec MS Teams SharePoint site and reviewed in the monthly progress meetings. The SharePoint site will be available for the City and Stantec staff and be used for shared and transfer documents Permitting Support (Section 2.3): • The City will pay all permit fees and lead permitting efforts. • Two Stantec staff will be available for up to three meetings with either DEQ or City staff. It is assumed that meetings will be 60 minutes in duration. Bench Testing and Water Quality Evaluation (Section 2.4.2): • Based upon results and recommendations presented in the draft technical memorandum for Task 2.4.2, Stantec will revise the Task Order 2 scope and fee. • Stantec will not perform any laboratory or analytical testing associated with Task 2.4.2 but will provide direction to the City on what testing methods are required. Stantec has not included any fee for third-party laboratory sampling. Filter Technology Evaluation (Section 2.4.3): • Hollow fiber membranes will be required for low-level phosphorus removal, as either full or partial tertiary flow • Conventional chemical coagulation will be used for phosphorus pretreatment Siting (Section 2.4.4): • Stantec will evaluate up to five potential site locations and shortlist three for evaluation. • The evaluation and shortlisted locations will be included in a draft technical memorandum. Stantec will provide a selection for a preferred site alternative in the memorandum. Task Order 11281 WWRF Tertiary Filtration Facilities Page 18 of 21 Stantec • The City will review comments regarding the preferred location and provide comments on the technical memorandum. City comments will be discussed at a siting workshop. • One site location will be selected at the workshop, and a final technical memorandum prepared to document the preferred site location. The preferred site location will be used as the basis for all preliminary design documents. Hydraulics (Section 2.4.5): • Modeling will be for the recommended infrastructure from Task 2.4.3 and 2.4.4. • Computational fluid dynamic modeling and physical modeling is not included. Control Narrative TM (Section 2.4.6) — Narratives will be for the recommended infrastructure from Tasks 2.4.3 and 2.4.4 Preliminary Engineering Report (Section 2.5) • The Draft PER will be submitted to the City for review • Stantec will submit the PER to Idaho DEQ for review • The City review period will be 14 calendar days • A workshop will be conducted to review the PER, supporting preliminary design documents, and comments with the City • Final PER will form the basis for the final design scope of work (future TO 3) • The Final PER will define the contractual basis for remaining design deliverables, schedule, and cost associated with the WRRF creating a design freeze for process, equipment, and general arrangements. Modifications to the Final PER will be evaluated for schedule and cost impacts prior to implementing under the TO 3. • The Final PER will include City and Idaho DEQ review comments • The PER and supporting preliminary design documents will be submitted concurrently for City Review Construction and O&M Cost Updates (Section 2.7) • City shall provide feedback for both the Class 5 OPCC and Class 3 OPCC within 14 calendar days of the deliverable being issued by Stantec • City feedback from the Class 5 OPCC estimate will be included in updates to the cost model and in the updated Class 3 OPCC estimate. The Class 5 OPCC estimate will not be issued as a deliverable more than once • Stantec will include revisions to the Class 3 OPCC estimate per City comments as a part of final design (TO 3 efforts) Other Assumptions: • The City will lead agency coordination with Stantec assistance • The City will lead any public involvement efforts unless otherwise requested • Stantec assumes that the City will require no more than 14 calendar days for deliverable review Task Order 11281 WWRF Tertiary Filtration Facilities Page 19 of 21 Stantec • Stantec assumes that Idaho DEQ will require no more than 40 calendar days for deliverable review • The flow and loadings projections from the 2018 Facility Plan will be used for planning and design purposes • Stantec standard drawing symbols as applicable to local City standards and abbreviations will be used • Stantec standards and approaches will be implemented in preparing the drawings using the City's standard borders. Any elements that are changed to suit City long term standards developments will be assessed for impacts to scope, schedule, and budget, and if necessary authorized as supplemental services • 2D plans will be prepared in ANSI D, 22 by 34-inch format. CAD drawings will be created in the BIM packages defined above. • The City will provide review comments on drawings and Stantec will provide responses using a Bluebeam Studio session. • Design calculations for the project will only be submitted when required by permitting agencies • No LEED or ENVISION requirements are anticipated for the facility • All design reports, plans, specifications, and engineering calculations will be stamped and signed by a registered Professional Engineer in the State of Idaho • No energy code compliance is anticipated • No restrooms or finished office spaces are anticipated. TIME OF COMPLETION and COMPENSATION SCHEDULE COMPENSATION AND COMPLETION SCHEDULE Task Description Estimated Completion Date Compensation 1 Preliminary Design September 30, 2022 (Exhibit A) $797,946.00 TASK ORDER TOTAL: $797,946.00 The Not-To-Exceed amount to complete all services listed above for this Task Order No. 11281 is seven hundred ninety-seven thousand nine hundred forty-six dollars ($797,946.00). No compensation will be paid over the Not-to-Exceed amount without prior written approval by the City in the form of a Change Order. No travel or expenses will be reimbursed through this agreement. All costs must be incorporated in the individual tasks within the Compensation and Completion Schedule above. CITY OF MERIDIAN STANTEC BY: BY: KEITH WATTS, Procurement Manager CLINT ROGERS, Vice President Task Order 11281 WWRF Tertiary Filtration Facilities Page 20 of 21 Stantec Dated: Dated: 9/28/2021 Council Approved Dated: 10-05-2021 City Project Manager: Clint Dolsby Task Order 11281 WWRF Tertiary Filtration Facilities Page 21 of 21 Stantec Page 112 Item#9. EXHIBIT B - FEE SCHEDULE, WRRF Tertiary Filtration Preliminary Design $797,946 Task Task Name Total 2 Preliminary Design 2.1 Project Management and Coordination $95,168 2.2 Data Collection and Field Coordination $13,668 2.3 Permitting Support $4,346 2.4 Studies and Technical Memoranda $181,834 2.5 Preliminary Engineering Report $47,042 2.6 Preliminary Engineering Design Documents $426,072 2.7 Construction and O&M Cost Updates $29,816 Page 113 Item#9. EXHIBIT A - PRELIMINARY SCHEDULE ID Task Mode Task Name Duration Start Finish Predecessors Resource Names Qtr 4,2021 Qtr 1,2022 Qtr 2,2022 Qtr 3,2022 Qtr 4,20 Se Oct Nov Dec Jan Feb Mar A r Ma Jun Jul Aua Se Oct 1 NTP 0 days Mon 10/4/21 Mon 10/4/21 10/4 I I 2 Project Management 260 days Mon 10/4/21 Fri 9/30/22 I I 3 Project Kickoff Meeting 0 days Fri 1018121 Fri 1018121 1FS+5 days 10/8 4 Startup, Tracking, and Coordination 260 days Mon 1014121 Fri 9130122 1 I 5 Coordination Meetings 260 days Mon 1014121 Fri 9130122 1 6 Closeout 0 days Fri 9130122 Fri 9130122 4 9/30 7 Data Collection and Field Investigations 80 days Mon 10/11/21 Fri 1/28/22 8 Existing Data Collection and Review 40 days Mon 10111121 Fri 1213121 3 9 Permitting Support(Tech Memo) 40 days Mon 1216121 Fri 1128122 8 O I 10 Preliminary Design 255 days Mon 10/11/21 Fri 9/30/22 11 Studies and Technical Memos 255 days Mon 10111121 Fri 9130122 12 Bench Testing and WQ Evaluation 80 days Mon 10/25/21 Fri 2/11/22 I I 19 Filter Technology Evaluation 130 days Mon 10/11/21 Fri 4/8/22 24 Siting 30 days Mon 4/11/22 Fri 5/20/22 19 I 25 Hydraulics 30 days Mon 5/23/22 Fri 7/1/22 24 26 Site Drainage 20 days Mon 5/23/22 Fri 6/17/22 24 IF 27 Control Narrative TM 60 days Mon 4/11/22 Fri 7/1/22 19 28 Experimental Testing 155 days Mon 2/28/22 Fri 9/30/22 33 Preliminary Engineering Report 170 days Mon 1117122 Fri 919122 34 Draft Report 100 days Mon 1/17/22 Fri 6/3/22 12FS-20 days I I I 35 City Review 10 days Mon 6/6/22 Fri 6/17/22 34 36 Final Report 20 days Mon 7/4/22 Fri 7/29/22 35,24,25,26 I I 37 DEQ Review 30 days Mon 8/1/22 Fri 9/9/22 36 I I I 38 Preliminary Design Documents(30%) 80 days Mon 616122 Fri 9123122 34,24FS-10 days 39 Cost Estimating 175 days Mon 1131122 Fri 9130122 43 Review Workshops 110 days Fri 1/14/22 Fri 6/17/22 I 44 Workshop 1 -Design Critieria 0 days Fri 1114122 Fri 1114122 7FF-10 days 14 45 Workshop 2-Bench Testing/WQ Evaluation 0 days Fri 1128122 Fri 1128122 12FF-10 days 28 I I I I 46 Workshop 3-Filters Technologies 0 days Fri 3125122 Fri 3125122 19FF-10 days 25 I 47 Workshop 4-Siting 0 days Fri 5/6/22 Fri 5/6/22 24FF-10 days 6 48 Workshop 5-Controls Strategies and 0 days Fri 6117122 Fri 6117122 27FF-10 days 17 Narrative Project: Preliminary Schedule - Task Milestone ® Summary Project Summary 8 Manual Task M Manual Summary Date: Thu 7/15/21 Page 1 Page 114