Riverside PFAS Wastewater Treatment Proposal

City of Riverside Public Utilities Department

Proposal for Professional Services for Site Modifications for PFAS Removal at the Palmyrita Water Treatment Plant

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Stantec Consulting Services Inc.

300 North Lake Avenue Suite 400 Pasadena, CA 91101

Dear Members of the Selection Committee,

November 19, 2024

Attention:

City of Riverside Public Utilities Depar tment

3750 University Avenue, 3rd Floor Riverside, CA 92501

Reference: Proposal for Professional Services for Site Modifications for PFAS Removal at the Palmyrita WTP, Request for Proposal (RFP) No. 2415

Stantec is pleased to offer our best personnel to the City of Riverside (City) to provide professional services for site modifications for per- and polyfluoroalkyl substances (PFAS) removal at the Palmyrita Water Treatment Plant (WTP). We have assembled an experienced Southern-California based team with an in-depth knowledge of current PFAS treatment technologies and a reputation of getting things designed efficiently and built properly.

Our project manager, David Pernitsky, has more than 30 years of experience in the design, construction, and commissioning of large WTPs and has been involved with PFAS treatment projects locally for the City of Santa Ana. David is based in Pasadena and has worked on a variety of PFAS projects across the country, as well as for smaller California systems as part of the statesponsored Safe and Affordable Fund for Equity and Resilience (SAFER) Program for the California State Water Resources Control Board (SWRCB). These projects include significant coordination with the Division of Drinking Water (DDW) and other state agencies.

David Pernitsky

Ph.D., PE Vice President

Direct: 626-390-5449

david.pernitsky@stantec.com

David will be assisted by Michael Adelman, also from Pasadena, who will be our process lead and overall design manager. Michael recently managed the detailed design of filter upgrades for the Metropolitan Water District of Southern California's (Metropolitan's) 460 million gallons per day (MGD) Deimer filtration plant and the detailed design of two 5,000 gallons per minute (GPM) granular activated carbon-advanced oxidation process

(GAC-AOP) groundwater treatment plants for the Los Angeles Department of Water and Power (LADWP) in the San Fernando Valley, which were brought online in 2022. Bita Sadri, who recently finished a zero liquid discharge wastewater treatment system project, will lead our civil and yard piping elements.

Quality assurance and quality control (QA/QC) will be provided by Jim Cathcart and Andrew Nishihara from our offices in Irvine and Portland, respectively. Jim oversees the PFAS treatment designs for the City of Santa Ana through Orange County Water District's (OCWD's) PFAS program. This work includes design, engineering services during construction (ESDC), and construction management services for four PFAS treatment installations. He is also currently managing a design study for the City of Santa Ana for a centralized treatment facility to treat four additional wells. Andrew is our west-coast PFAS technical lead and brings insight on PFAS treatment from his involvement in more than a dozen PFAS projects since 2015. Sean Larson will lead our ESDC work and is currently providing ESDC for our City of Santa Ana PFAS projects. The balance of our team, including electrical, mechanical, civil and structural engineering, is located in Pasadena and Irvine.

Our team has a strong track record of working together to successfully deliver projects similar to yours. David and Michael have worked together since 2019 on the San Fernando groundwater treatment project, and have recently reached the

100% design document stage on the Diemer WTP filter rehabilitation project. Additionally, David, Jim, and Sean have extensive experience working together on multiple PFAS systems for the City of Santa Ana. With the Deimer WTP filter rehabilitation project nearing its completion, David, Michael, and our discipline design teams have availability to commit to your project.

We understand that the City has a number of choices when selecting an engineering partner for this project. The City has already done the difficult work of developing an overall PFAS treatment strategy and selecting the ion exchange (IX) treatment process. It is possible to get a functional, vendor-supplied system with minimal design engineering effort. Although this can minimize design engineering costs, we believe that there are overall project savings when the City works with a qualified engineering partner to design an economical and efficient system that meets your specific needs.

We believe that the Stantec team will add value to your project in the following major areas:

1. An easy-to-construct design. We will develop a site layout that makes IX vessel installation and system tie-ins efficient, optimizing contractor time and cost and minimizing operational disruption to the City.

2. An easy-to-operate design. Although a generic, bare-bones, vendor-supplied system can reduce equipment capital costs, we have found that including extra features such as flow

meters and flow control valves on individual vessels allows for more efficient use of resin and allows operations to better monitor bed usage, reducing operations and maintenance (O&M) costs.

3. A design that encourages competitive bids from multiple vendors. Although each equipment vendor claims unique advantages, Stantec has found that there are several vendors who can supply quality PFAS treatment systems. It has been our experience that the reduction in capital cost realized by writing a procurement specification that allows competitive bids from pre-qualified vendors results in lower project life-cycle costs than sole-sourcing one vendor based on a perceived product advantage, such as reduced underdrain headloss. Our design approach will evaluate differences in hydraulics, corrosion resistance, vessel height, and valving configurations against your individual project constraints when qualifying suppliers.

As stipulated in the City’s RFP, Stantec confirms that we intend to perform the services listed in the RFP and confirm that all elements of the RFP have been reviewed and understood. Stantec is willing to enter into a contract under the terms and conditions prescribed by this RFP and in the Sample Agreement. David will be the single point of contact for the city throughout the project.

Sincerely,

Stantec Consulting Services Inc.

Statement of Understanding and Approach

Project Understanding Background

In April 2024, the United States Environmental Protection Agency (USEPA) introduced the first nationwide, legally e nforceable drinking water s tandards to safeguard c ommunities from PFAS c ontamination. S everal groundwater sources in R iverside have been affected by PFAS and treatment is c rucial to meet the mandated s tandard. We understand the critical role this project plays in meeting federal and s tate regulations, while also safeguarding public health, the environment, and our community’s water resources.

As s tated in the City’s RFP for Professional S ervices for Site Modifications for PFAS Removal at the Palmyrita WTP, R FP No. 2415, the purpose of this project is to provide professional e ngineering and c onstruction management services for the design and c onstruction of site modifications at the Palmyrita W TP. These site modifications involve the addition of IX treatment to the existing Palmyrita WTP to remove PFAS. New 16-inch and 30-inch diameter supply pipelines, which will extend from the Brunton and Garner wells to the Palmyrita WTP site, will be designed and c onstructed by other parties. The scope of this assignment includes the c onnections to these new pipelines.

The existing W TP consists of 15 GAC vessels used to treat dibromochloropropane (DBCP) from the Palmyrita, Twin S prings, Electric Street, and Moore-Griffith wells. T he new IX process will treat GAC effluent from the existing treatment plant, as well as groundwater from the City’s Br unton and Garner wells, which do not receive GAC treatment. The total treatment capacity of the new plant is 16,500 GPM.

As outlined in Exhibit E of the RFP, the City selected IX treatment for this project on the basis that IX treatment has been shown to be more effective for the removal of short-chain PFAS c ompounds than GAC. IX treatment of the existing GAC effluent will provide additional treatment for the short-chain compounds that the GAC process did not completely remove. IX is also well suited to treating the Brunton and Garner wells as they contain significant amounts of short-chain PFAS c ompounds. Stantec agrees with the selection of IX for this project as it will provide effective treatment and will be straightforward to permit and c onstruct.

As detailed on the subsequent pages, we will discuss how S tantec will work with the City to deliver a high quality project that is easy to c onstruct, easy to operate, and economical to build and maintain.

Key Project Goals

Design and construct site modifications, including the addition of IX treatment, at the Palmyrita WTP

Maximize the reduction of PFAS, increase treatment capacity to 16,500 GPM, and treat GAC effluent from the existing treatment plant and groundwater from the Brunton and Garner wells

Complete design and construction within 35 months to meet the USEPA’s 2029 PFAS drinking water compliance deadline

General Approach

In this section we d escribe our task-based approach to executing this project and highlight the design s trategies that distinguish the S tantec team from our c ompetitors. Our design m ethods will produce a treatment plant that is cost-effective to build and easy to operate and maintain.

Task 1. Project Management Services

A successful project starts at the top with project management. Effective project management and a collaborative team approach be tween the City and Stantec are needed to meet your project objectives, schedule, and budget. Our project manager, David Pernitsky, will have regular communication with your team via telephone, Microsoft Teams, and e mail to to facilitate the seamless execution of this project.

Effective Implementation Plan

At the onset, David will develop a project implementation plan (PIP) outlining c ommunication protocols, schedule, scope, safety procedures, and all administrative elements of the project. The PIP will guide project management and project execution and include a quality management plan. Additionally, we will prepare a risk management plan that includes a risk register to identify project risks, quantify consequences, develop s trategies to minimize the risks, and identify measures to proactively address the unforeseen situations.

A decision log will be established to document significant project decisions. It will be updated and reported monthly. We use decision logs in planning and design projects to record decisions, inform involved parties about how decisions were reached and outline the options considered. T his decision-making matrix will alleviate any potential c onfusion.

Tight Cost and Schedule Controls

We take special care to deliver projects on schedule and within budget. David and Michael will make sure each team member has a defined scope or task and is aware of the budget and schedule. Progress meetings will be held regularly. They k now that the key to meeting project schedules is being effective in making decisions, tracking progress, identifying upcoming tasks, meetings, and deliverables. The word “schedule” appears 14 times on this page of our proposal, e mphasizing its importance. T he federal maximum c ontaminant levels (MCLs) deadlines for PFAS treatment are quickly approaching in 2029 and the timelines for state revolving fund (SRF) and water infrastructure finance and

innovation act (WIFIA) funding, design, and permitting will place additional pressure on the City. O ur proposed schedule for the Palmyrita Modifications is presented in S ection G: Pricing/Schedule.

Resource Allocation, Schedule, and Staffing

Our team is readily available and committed to your project. In turn, we also understand project schedules can change, and s taffing conflicts may arise during project delivery. To proactively address keeping projects on schedule and budget, we have a broad network of resources accessible across multiple offices. With 1,700 s taff located in California, 2,400 staff in North A merica, and over 31,000 persons within our c ompany globally, we are c onfident that we can meet the City's s taffing needs.

Detailed Scope of Work for Task 1

We have thoroughly reviewed the scope of work (SOW) in the R FP and have dedicated the remainder of this section to discuss our approach to address the tasks listed in the R FP.

A. Kickoff Meeting

Stantec will lead a kickoff meeting with the City to discuss the goals and objectives for the project. Stantec will present our PIP at the k ickoff meeting to go over project reporting, c ommunication protocols, and project schedule. T he key technical issues will be discussed to establish the project guidelines. We will prepare a meeting agenda for the City’s review prior to the kickoff meeting and draft meeting minutes with action i tems within f ive working days following the meeting

B. Bi-Weekly Project Team Meetings

Stantec will c onduct bi-weekly project team meetings with the City and key subconsultants throughout the project duration. S tantec will prepare a meeting agenda for the City’s review prior to each meeting and meeting minutes with action items within f ive working days following each meeting.

C. Bi-Weekly Email Updates

Stantec will provide bi-weekly updates consisting of an e mail report. T he updates will identify and discuss project issues, c oordination efforts, action items, schedule, budget, and any other i tems of c oncern.

D. Quality Control and Quality Assurance Plan

We will submit a QA/QC plan for City review and approval.

E. Detailed Billing Breakdown

We will provide a detailed billing breakdown with each invoice submitted listing all individuals and subconsultants who worked on the project, along with their respective billing rates and hours charged. Billing rates will remain f ixed for the duration of the project. C osts, such as printing, plotting, reproducing and mailing, will be listed as other direct c osts.

F. Detailed Budget Summary

Stantec will provide a detailed budget summary with each invoice showing budget spent, remaining, and forecast for the next billing period. We will provide a written summary of work performed for the invoice period, as well as work to be performed in the next billing period.

Task 2. Preliminary Design Engineering Services

The City has done an excellent job in developing a PFAS treatment strategy and conceptual design for this project. For this task, Stantec will work with the City to refine the facility design and make key decisions regarding what will be built. This is an important stage of the overall project, and the key component is the City’s involvement in the development of the design. Getting early input from the City on the major questions related to the system hydraulics, process selection, site layout, the degree of automation and control to be provided, and O&M concerns will result in an efficient detailed design phase and a smooth construction phase.

Some of the important issues to be resolved in this phase are described in the following section.

Hydraulic Analysis

“Stantec has gone above and beyond to help ensure that the projects have run efficiently, timely, and were properly designed/constructed. They have continued to impress us with their ability to quickly turn around quality work when issues during construction have come up. They are also always willing to analyze potential issues and anticipate questions before they turn into concerns. It has been great working with the Stantec team, and I look forward to many more projects with them, including additional PFAS treatment plants.”

Audrey Perry Associate Engineer OCWD

The hydraulics of the proposed overall system are complex, as the new facility will get water from the existing GAC system and the Brunton and Garner wells that currently pump directly into the distribution system. We will work with the City and use your existing hydraulic model data to determine if a booster pumping facility is needed to accommodate the additional headloss from the new pipelines, pre-filters, and IX vessels, while still meeting distribution system pressures. The existing well pumps may or may not be able to handle this additional headloss. Minimizing pumping head, where possible, results in longterm e nergy savings. We have taken different e ngineering approaches for different projects, including oversizing hydraulic elements to allow existing pumps to continue operating, replacement of pump impellors to accommodate the new duty point, c omplete replacement of well pumps, or the addition of booster pumps. A lso, it is likely possible to design a well-functioning booster pump s tation with fewer than the nine pumps used for your preliminary estimates, allowing a smaller pump s tation and freeing up valuable site space. Both capital and operating expenditures (CAPEX and OPEX) will be evaluated to determine the most effective approach.

Vessel Layout and General Arrangement

Although the Palmyrita site appears to have a large amount of available space, the site needs to accommodate an estimated 22 IX vessels. Providing truck and c rane access for the delivery and installation of the vessels and truck access for ongoing media replacement will require careful arrangement of the vessels and the proposed booster pump s tation. As shown in the f igure to the right, the existing road will provide access to the east side of the new IX vessels, but a new road lane will need to be added to provide access on the west side of the new vessels. I t would be optimal if a truck c ould drive up to the west vessels and then drive s traight through to the exit without backing up. T he photos below illustrate the c onstruction process. After foundations are poured, the inboard vessels will be unloaded and installed f irst to minimize the required lift height and allow the use of a small truck c rane.

During preliminary design, we will also work with the City to establish the layout of the piping c onnections be tween the new inlet lines from the wells, the effluent line from the existing treatment plant, and the new pump s tation. T he location of the valve trees on the IX vessels and the arrangement of the distribution headers will also be established as part of this task. T here are various trade-offs between the total length of piping, footprint, and access. We propose using buried yard piping to provide e nhanced truck access. Figure 1 to the right shows one potential site layout that we believe provides reasonable truck and operator access to the vessels while maintaining logical yard-pipe routing. Options will be developed collaboratively with you during this preliminary design engineering task.

Proposed Site Modifications

1 New booster pump station

2 22 I X vessels

3 Tie in exisiting GAC effluent line to new booster pump station

4 New supply lines from wells to booster pump station and from existing treatment and new wells

5 Upgrade/expand existing motor control center (MCC)

6 New access gate and road to access west side of new vessels

7 Expand/upgrade exisiting sodium hypochlorite (NaO Cl) feed equipment and relocate injection location

Design with Construction in Mind

After foundations are poured, the inboard vessels will be unloaded and installed first to minimize the required lift height and allow the use of a truck crane with narrow outriggers.

Early Decisions Impacting Cost

The reason PFAS systems have wide ranges of costs comes down to key decisions around:

y Vessel ladders and access platforms

y A rchitectural and landscaping

y Backwash supply and s torage needs

y Flow meters and other I&C

y Dealing with system headloss

y Chemical system modification

y Valve automation

y Integration with S CADA

We will work through all the pros and cons of these items, while providing their c osts to keep the project on budget.

Process Details

During the preliminary design e ngineering task we will work with you to determine the design details you want included in your new facility to provide ease of operation and maintenance. T his is the time to make the key decisions (see call out box above) that will impact facility function and cost, and lock-in the design basis so that the detailed design can proceed efficiently with minimal rework. A ll of these design decisions require consideration of c ost versus functionality. An example decision would be whether or not to include dedicated f low meters and flow c ontrol valves on each IX vessel. We have noted that the existing GAC facility uses hydraulic flow splitting, which is a low-CAPEX approach, and completely

appropriate for GAC applications. For PFAS applications, however, we have found that including flow meters and f low control valves on individual vessels allows for more efficient use of the resin and allows operators to be tter monitor and predict be d usage, all of which reduce O&M c osts. The empty bed contact time (EBCT) for PFAS removal by IX is typically 2-3 minutes, and the +/- 10% variations in flow seen between vessels with hydraulic flowsplitting have a significant impact on treatment ef ficiency.

A nother example of early design decisions is determining how much permanent access is desired to the top of the IX vessels. Some clients prefer permanent ladder cages, s tairways, and/or catwalks on vessels,

whereas others prefer to reduce facility CAPEX and rely on portable lifts for required maintenance, such as the cherry picker you currently have onsite for access to the top of your existing GAC vessels (shown in the picture above). IX requires pre-treatment f iltration to prevent clogging of the smalldiameter resin be ds, and cartridge filtration is our team’s recommendation. We recommend using five-micron, horizontal, high-flow cartridge filters. T heir horizontal orientation allows for ease of access and change out of f ilters at c hest height, protecting operator safety and reducing the time required per c hange out, as well as eliminating the need for raised platforms.

Electrical and Automation

The details of the electrical feed for the new vessels and booster pumps will be determined in this phase. To simplify construction, we are proposing to locate new MCC and electrical e quipment for the booster pumps and IX vessels in the new booster pump building.

T hese new MCCs can be fed from the existing electrical building.

T he GAC equipment was installed 20 years ago. Typically, MCC lifespan is be tween 25-40 years and switchboard lifespan is be tween 20 to 30 years. We recommend that the City c onsider replacing the critical electrical e quipment such as the switchboard and MCCs as part of this construction c ontract to provide

long-term overall facility reliability. We will perform load calculations, a condition assessment, and a code c ompliance review for the existing power distribution systems to determine the best approach.

A high level network architecture will be developed to determine viable communication options between the well site and treatment system.

T he basis of design for the c ontrol systems and S CADA will also be determined. The degree of automation, which I/O goes to central SCADA versus the local HMIs, and any s tandardization on PLC, valve actuator, or instrumentation vendors preferred by the City will be established during this phase.

Equipment Procurement Approach

Lastly, the procurement approach for the IX vessels and associated equipment will be established during the preliminary design phase. T here are several approaches for procuring this equipment. Each equipment vendor’s products have unique advantages. However, Stantec has found that differences are relatively small and that there are several vendors who can supply quality PFAS treatment systems. I t has been our experience that writing a procurement specification that allows competitive bids from multiple prequalified vendors results in lower project life-cycle cost, than sole-sourcing only one vendor. Our design approach will include evaluating the engineering advantages of individual vendors with respect to hydraulics, corrosion resistance, vessel height, and valving configurations and determining the relative life-cycle costs of each option.

For example, in E xhibit E of the City's RFP (Planning Me morandum), reference is made to u tilizing an external ring header as the preferred design basis for the underdrain system. Depending on how this is written in final design specifications, it can unintentionally discourage bidding and c ompetition between vendors, resulting in higher costs. We recently assisted the City of Minnetonka Beach in achieving

savings of more than $50,000 per vessel pair by opening the bid documents to multiple vendors (see callout below). We will explore similar opportunities for your project to maximize c ost savings.

We recognize that schedule is very important to the City. T he overall project schedule can be reduced if alternative e quipment procurement approaches are used, rather than having the general c ontractor select equipment after the award of the general c ontract. To expedite implementation and c onstruction, Stantec recommends the City c onsider prepurchasing long-lead i tems. Lessons learned from our recent experience with OCWD projects demonstrated that treatment vessels require significant lead time for delivery, which prompted OCWD to prepurchase 150 vessels. S imilarly, e mergency generators and motor control centers are experiencing several months to more than a year in lead time. S tantec can work with the City to prepare prepurchase designs and specifications early in our design process to minimize these material delays.

Exploring Strategies for Cost Savings

Earlier this year we originally had a closed specification for our PFAS project with Minnetonka Beach in Minnesota that listed the only pre-qualified vendor that used an external header underdrain. However, after discussions with multiple vendors, we discovered that other quality vendors were willing to modify their standard designs and provide external header underdrains. By c hoosing to open the bid documents up to multiple vendors, a savings of over $50,000 per vessel pair were realized on bid day compared with the bid from the original preferred vendor.

Heart of the Process

Our experience with different manufacturers can help with vendor selection and f iguring out what design details are most important to the City. T he more important details will focus on the infrastructure support for the media to maximize i ts life or support replacement. These three pairs of pressure vessels look similar bu t are from three different manufacturers.

1. What’s inside: Vessels and IX resin should be bid and supplied separately. Bundling media and vessels can streamline procurement but may not be the most cost-effective approach in the longterm if you have performance guarantees tied to a single source of media. Flexibility is key.

2. U nder the hood: Beware of standard specifications from vendors, as they may include s tringent underdrain requirements which will limit c ompetition and impact pricing while adding limited (if any) overall value. For example, TIGG has been making pressure vessels for a long time bu t have been disallowed from bidding some PFAS projects due to a slightly different ring header and underdrain system.

3 U p and over: The cross-piping design from Calgon at first glance looks more complicated and unnecessary. But i t does help eliminate t wo valves on the valve tree with limited impacts to overall functionality. Piping c ould be modified to match other systems if that return in functionality and added valve c ost is desired.

The depth of analysis of these preliminary design issues will affect the amount of e ngineering effort that we need to expend, and that will affect our fee. I t is possible to keep e ngineering design budgets to the bare minimum and simply off-load the design work for the IX vessels and piping to the equipment vendors. That is not our approach, and we do not believe that such an approach represents best value for the City.

Detailed Scope of Work for Task 2

The remainder of this section discusses our detailed approach to Task 2, in conformance with the requirements of the RFP.

A. Review of Planning Memorandum

Stantec will review and provide a recommendation regarding the Planning

Me morandum prepared for this project. The Planning Memorandum will serve as the initial basis of design for this project and will be supplemented by the Preliminary Engineering work we will do as part of this task.

B. Review of City’s Existing Data

Stantec will review City’s existing data, reports, record drawings and s tudies c oncerning the project design, construction, and other issues.

C. Preliminary Geotechnical Studies

We will prepare preliminary geological, soils, and seismic studies to address relevant ge ology, seismicity, and groundwater issues necessary for the project design.

Our subconsultant, Ninyo & Moore, and ge otechnical lead, Michael Putt , will manage ge otechnical investigations, which will drive decisions about site layout options and foundation requirements. Our geotechnical e ngineers will c onduct a detailed review of available geotechnical reports and publications relevant to the Palmyrita site, using as much available subsurface information as possible to reduce time and effort in the geotechnical

f ield exploration. For areas where subsurface data are lacking, additional f ield exploration and laboratory testing will be conducted.

T he f ield exploration may include borings, c one penetration testing soundings, test pits, and ge ophysical survey, depending on the subsurface soil and groundwater c onditions, proposed project, and site access and c onditions. The representative soil samples will be collected at selected depths from the borings and/or test pits and transported to the laboratory for testing. The geotechnical analyses will be performed in accordance with the most recent codes and procedures required by local, state, and federal agencies.

T he analyses will include evaluation and mitigation of seismic hazards, ge ologic hazards, and corrosion potential of concrete and metal in c ontact with soils. Recommendations for seismic design parameters, foundation design, lateral earth pressures and frictional resistance, pavement s tructural sections, and earthwork will be developed as needed. The f indings and recommendations will be presented in a formal report that will be signed and stamped by a California-licensed geotechnical e ngineer.

Geotechnical Evaluations for PFAS Treatment Systems

Michael Putt conducted geotechnical evaluations for new PFAS treatment systems at seven well sites in the City of Orange and five in the City of Garden Grove. Key considerations included assessing remedial grading depths for foundation preparation and evaluating dynamic settlement in liquefaction hazard zones. The services at each site involved two exploratory borings, soil and groundwater condition assessments, laboratory testing, engineering analysis, and the preparation of a comprehensive geotechnical evaluation report.

Task 6. Field Engineering and Inspection Services (OPTIONAL TASK)

Stantec provides construction inspectors and project-specific inspectors to observe the construction c ontractor's work in accordance with the contract documents and requirements. Our relationships with c ontractors, equipment vendors, inspectors, and local municipalities e quip us to provide top-notch recommendations and insights when c hallenges are encountered during c onstruction. During our recent projects, we have worked with clients to navigate supply c hain c hallenges, correct manufacutring quality issues, procure e quipment while minimizing risk, and address urgent construction concerns. We are c ommitted to prioritizing responsiveness and participating actively as a partner to the City.

Detailed Scope of Work for Task 6

The remainder of this section discusses our detailed approach to Task 6 in c onformance with the requirements of the RFP.

A. Construction Staking and Grade Sheets Preparation

Stantec will provide c onstruction s taking and prepare grade sheets for c ontractor’s use, as necessary.

B. Detailed Field Inspections

We will perform c omplete detailed field inspections during construction by qualified team of inspectors as described in the QA/QC Plan.

C. Full-Time On-Site Management

Stantec will assign one full-time c onstruction manager and one full-time superintendent, for a total of t wo fulltime e quialents (FTEs), to oversee c onstruction activities, inspection services, and safety.

D. Geotechnical Services

We will e ngage the services of a ge otechnical firm acceptable to the City, for testing soils, c oncrete, and other materials required for the c onstruction phase of the project.

E. Manufacturer Inspections

We will perform manufacturer shop, plant, and mill inspection, if required.

F.

Notification of NonConformance

Stantec will notify the City of any items not in c onformance with the plans and specifications.

Task 7. Grant Procurement Services (OPTIONAL TASK)

A. Grant Funding Assistance

Kim Pugel will spearhead grant funding assistance services and act as your liaison to Stantec’s funding group, which has secured $6 billion for our clients' projects. Currently, she is offering advisory support for a PFAS c ost impact analysis for the National Association of Clean Water Agencie. Kim will assist in seeking potential grant funding opportunities. The budget to be used for this task shall be $15,000.

Stantec shall perform the following work:

y Research possible grant or low interest loan programs that could potentially provide funding for the project. Findings will be summarized in a funding matrix that will outline critical components of the funding program, such as potential funding available, project eligibility, submittal deadlines, funding match requirements, etc.

y Assist the City with low-interest loan or grant applications. Once the funding matrix is c omplete, we will work with the City to determine a s trategy for seeking low-interest loans or grants. O nce ideal or preferred funding programs are determined, we will assist the City in completing the funding applications. Each program will have i ts own unique set of requirements. We will work with the City to determine the best s trategy for c ollecting and preparing materials for submission to funding agencies.

y S ince this work cannot be determined precisely, i t is funded at a $15,000 allowance to be executed at City staff direction, with any additional work

required beyond that to be funded through c ontract amendment. Funding for research and grant applications will be billed based on time and materials, and any work needed beyond the task dollar amount will require a task amendment.

Task 8. Knowledge Transfer

A. Knowledge Transfer Session

Stantec will c onduct a two-hour k nowledge transfer session at the c onclusion of the project for City staff. T he session will include a PowerPoint presentation and handouts with relevant photos and exhibits as necessary to c onvey the key issues of the project. T he meeting will be held using a virtual platform via Microsoft Teams.

Task 9. Additional Engineering Services (OPTIONAL TASK)

A. Additional Engineering Services

Over the last decade, Stantec has collaborated with municipalities, industries, and federal departments to address PFAS-related challenges. We offer a comprehensive range of engineering services and are dedicated to providing solutions for the City. We have included a City-controlled allowance for additional engineering services in our fee proposal.

Organization and Staffing

Having a strong project management and technical team in place is essential to any successful project. At S tantec, we take pride in tailoring our project teams to project requirements, size, and c omplexity.

O ur experience e nables us to anticipate possible problem areas and dedicate necessary resources whe re needed.

Team Organization Chart

The key to a successful project is compiling an experienced and cohesive team. We’ve assembled a team of professionals with a high level of c ommitment, enthusiasm, and experience. O ur team members bring diverse water treatment background and experience. I t is this experience and technical knowledge that will help us achieve your goals. O ur organization chart demonstrates how our team is organized and managed to help e nsure tasks are delivered smoothly and efficiently.

City of Riverside

Public Utilities Department

Project Manager

David Pernitsky, Ph.D., PE

Jim Cathcart, PE, F.ASCE

Andrew Nishihara, PE*(AZ, HI, ID, NV, NM, OR, WA), ENV SP

The Stantec team has a proven track record of working together to deliver successful projects, such as OCWD's PFAS treatment system designs and LADWP's San Fernando groundwater treatment project.

Civil

Bita Sadri, PE

Mechanical

Sean Neprud, PE, LEED AP

Electrical

Bruce Wong, PE, PMP, ENV SP

Design Manager

Michael Adelman, PE

I&C

Nadarajan Sankaran, PE*(CO)

Structural

Simon Lin, Ph.D., PE, SE

Surveying

Greg Sebourn, PLS, M.ASCE

Geotechnical

Michael Putt, PG, CEG

Process

Michael Adelman, PE

Hydraulics

Fletcher McKenzie, PE*(CO, MA, NY)

Traffic Engineer

Keith Rutherfurd, TE

Engineering Services

During Construction

Sean Larson, PE*(MT)

Optional Tasks

Construction Contract Administration

Umesh Murthy, PE, PMP, CPP, BCEE

Inspections

Dan Heston

Grant

Funding

Kim Pugel, Ph.D.

Key Personnel

Ninyo & Moore

*( ST ) Licensed outside of CA

The Stantec Team

Our team will be led by project manager David Pernitsky, who brings 32 years of water treatment design experience. David has led many projects involving state of the art technological solutions including IX, GAC, membrane filtration, reverse osmosis, and high-rate granular media filtration systems. David has worked on the design, construction, commissioning, and optimization of multiple surface and groundwater treatment facilities. As your primary point of contact, David will focus on overall project planning and execution, communication, and coordination. He will supervise all aspects of project delivery to make sure schedule milestones are met, deliverables are responsive to your comments, and the scope of work is executed in an efficient manner.

To help ensure the highest standards of QA/QC, David will be supported by Jim Cathcart and Andrew Nishihara. Jim has more than four decades of water system planning and facility design experience. A ndrew has worked on water projects for over 40 communities and has a broad understanding of treatment plant design having served as a project manager and technical lead for new water treatment facilities, expansions, and rehabilitations. Their combined expertise will provide a robust framework for maintaining high-quality standards throughout the project. Jim and Andrew will oversee quality control, provide input on critical areas, and validate all processes to help ensure they meet industry standards and regulatory requirements.

Working closely with David, Andrew, and Jim, our design team will make sure each deliverable meets your objectives and is achieved within schedule and budget. David has handpicked our highly experienced design team with proven capabilities to lead their respective design tasks. Many of our team members have delivered successful recent projects together and this experience will be the key to successful project delivery. Our team members are not only highly skilled in their respective fields but also share a commitment to innovation, quality, and client satisfaction.

Our team has successfully collaborated with various agencies on projects similar to yours. This has equipped us with the skills and insights necessary to deliver exceptional results.

Each biography on the following pages highlights the unique qualifications and experiences of our key personnel that make our team well-suited to meet your needs and exceed your expectations.

Project Manager

David Pernitsky

Ph.D., PE

QA/QC

Stantec / Vice President, Water Treatment, US Pacific

David is a water treatment process selection and design subject matter expert.

+ 32 years of experience in all aspects of WTP design, construction, and commissioning

+ Has worked on the design of a variety of PFAS treatment projects

David is a water treatment subject matter expert who works in Stantec's Pasadena office. Over his 32-year career, he has worked on the design, construction, commissioning, and optimization of over 100 water treatment facilities. He has led many projects involving state of the art technological solutions including IX, GAC, membrane filtration, reverse osmosis, and high-rate granular media filtration systems. David takes a client-first approach to all of his projects. He has effectively worked with large clients such as LADWP and Metropolitan, as well as smaller clients like the City of Lompoc.

As PFAS regulations have developed and more and more systems are detecting contamination, David has been advising Stantec's clients across North America. Locally, David has worked together with Jim Cathcart on PFAS treatment designs for the City of Santa Ana, and has worked on several challenging PFAS treatment approaches for smaller California groundwater systems.

Jim Cathcart PE,

Stantec / Senior Principal

Jim has four decades of water system planning and facility design experience.

+ 47 years of experience with project management, design, contract administration, and construction

+ Brings recent, relevant Southern California PFAS treatment design experience

Jim specializes in the planning, design, and construction management of ground- and surface-water treatment; pumping and storage; and pipeline design. He has completed numerous pipeline and pump station designs and conducted several groundwater treatment studies and designs for wellhead water quality compliance. Jim has provided expert witness services for water system design and groundwater contamination issues. He is currently serving as project manager for all PFAS treatment system projects for the City of Santa Ana under OCWD's PFAS on-call program.

QA/QC

Andrew Nishihara

PE*, (AZ, HI, ID, NV, NM, OR, WA), ENV SP

Stantec / Principal, Practice Leader

Andrew has supported a variety of PFAS projects throughout the country.

+ 17 years of experience managing WTP facilities, expansions, and rehabilitations

+ Brings state-of-the-art knowledge of current and emerging PFAS treatment technologies

Andrew has worked on water projects for over 40 communities and has a broad understanding of treatment plant design. His recent focus has been on PFAS planning, research, and design, spurred by working Alaska’s first PFAS treatment system eight years ago. Andrew is one of Stantec’s PFAS thought leaders keeping in front of new technologies through literature review, involvement with pilot and bench studies, and by working with multiple equipment vendors. He has presented about PFAS at local operator short schools, AWWA ACE, and was interviewed by WaterWorld this summer about his technical presentation comparing modeled versus actual long-term PFAS operations costs experience by utilities.

Design Manager/Process Lead

Michael Adelman PE

Civil Lead

Stantec / Senior Associate, Senior Environmental Engineer

Michael has experience with wellhead treatment systems and adsorptive processes.

+ 12 years of experience providing process design for water, wastewater, water reuse, site remediation, and waste management projects

+ Led a groundbreaking study of the adsorption kinetics of PFAS on different media

Michael’s work encompasses a wide range of activities, including experiments at bench-, pilot-, and plant-scale, as well as water quality modeling. He excels in conceptual analysis, process selection and sizing, process design, and providing engineering support during construction and operation. Additionally, Michael has served as the process lead on multiple facilities, showcasing his expertise and leadership in the field.

Bita Sadri

Mechanical

Stantec / Senior Project Manager

Bita specializes in providing engineering design and solutions for local and regional infrastructure facilities.

+ 21 years of experience planning and engineering public infrastructure and civil projects

+ Has provided her civil design expertise on a number of water infrastructure projects and facilities

Bita is a seasoned civil project manager and certified professional engineer with experience in public infrastructure and civil projects. Specializing in water and wastewater treatment plants, drainage systems, and infrastructure upgrades, she excels in project planning, design, construction documentation, and permitting. Bita has managed treatment plant upgrades, designed new infrastructure, and improved existing facilities, leveraging her expertise to enhance efficiency and reliability. She has coordinated multidisciplinary teams and collaborated with water districts, municipalities, multiple counties in Southern California, and federal agencies. Her expertise ensures regulatory compliance, effective communication, and successful project outcomes.

Sean Neprud

Stantec / Associate, Mechanical Engineer

Sean brings an expertise in water and wastewater treatment, mechanical electrical and plumbing (MEP), and decorative water features.

+ 21 years of experience providing mechnical design for water and wastewater projects throughout California

+ S erved as the mechanical lead for remediation and modifications of 17 groundwater pumping stations for the San Fernando Basin Groundwater Treatment project

Sean is knowledgeable on a variety of infrastructure elements, including pumping and piping systems, emergency power generators, compressed air, fire protection, electrical power distribution systems, chemical storage and delivery, control systems, and instrumentation. Sean is experienced in all stages of traditional and creative engineering projects, including engineering, construction management and coordination, production, startup and commissioning, and project closeout. He led the mechanical and chemical system designs for Santa Ana Wells 27/28, 31, 38, and 40.

Umesh Murthy

PE, PMP, CPP, BCEE

Construction Contract Administration

Stantec / Senior Principal

Umesh specializes in overseeing construction contracts for treatment plants and water facilities.

+ 32 years of experience managing construction contracts for water and wastewater projects

+ S killed in handling change orders and maintaining detailed project records to help ensure smooth project execution

Umesh is a seasoned professional specializing in construction contract administration, with extensive experience in project and program management across engineering, construction, operations, maintenance, and commissioning. Before joining Stantec, he worked for the Chino Basin Municipal Water District/IEUA for six years and the OC San (OCSD) for 22 years. Umesh adeptly manages project schedules, costs, quality, and scope, swiftly addressing and resolving change orders to minimize project impact. By anticipating potential gaps and challenges early, Umesh effectively mitigates risks and resolves conflicts with contractors, consultants, management, and interested parties. Umesh’s approach is characterized by clear and concise communication, prioritizing regular consultation, approval, information sharing, and reporting.

Inspections

Stantec / Inspector

Dan Heston

Grant Funding

Living in Riverside, Dan is personally dedicated to the success of your project.

+ 3 4 years of experience of conducting inspections for various private and public works projects

+ Currently conducting inspections for our PFAS projects for the City of Santa Ana and OCWD

Dan began his career as a field technician and quickly advancing to the role of operations manager and construction inspector. Dan has worked on many types of projects as a senior construction inspector, quality assurance and quality control paving inspector, and roadway inspector among others. He managed a testing lab and oversaw daily operations, including breaking concrete test cylinders, Proctor and Marshall testing, and sieve analysis. Dan has dispatched field inspectors and reviewed daily field and lab testing reports. As a current resident of Riverside, Dan shares a personal commitment to the success of your project.

Kim Pugel Ph.D.

Stantec / Manager, Water Infrastructure Funding

Kim is your liaison to Stantec’s successful funding group that has captured $6B for our client’s projects.

+ 8 years of experience providing grant funding assistance for water and wastewater projects

+ Currently provides advisory support for a PFAS cost impact analysis for the National Association of Clean Water Agencies

Kim helps water and wastewater utilities throughout the Western US reconcile the constantly evolving policy landscape for water, wastewater, and resilience. Her broad background uniquely weaves together engineering and policy—from technical engineering for wastewater treatment, to water policy analysis for the United States Agency for International Development (USAID) and the United Nations (UN). Kim earned her Ph.D. while working on a USAID project, investigating how organizational collaboration impacted the technical, managerial, and financial capacity. A testament to her unique skillset, Kim was selected as a “New Face in Civil Engineering” by the American Society of Civil Engineers in 2021.

Consultant

Information

Company Description

Established in 1954, the Stantec community unites more than 31,000 employees working in over 450 locations across 6 continents. With 27 offices in California, we have 260 water specialists that are available for this project, including our c ore team members who are locally available from Pasadena and Ir vine.

Our services—water treatment, e nvironmental sciences, e ngineering, architecture, landscape architecture, surveying, project management, funding project economics from initial project c oncept and planning through design, construction, and management—begin at the intersection of c ommunity, creativity, and client relationships. With a long-term commitment to the people and places we serve, Stantec has the unique ability to c onnect to projects on a personal level and advance the quality of life in communities across the globe.

We offer a thorough understanding of requirements, procedures, and protocols for engineering c onsultant services on City-related projects. S tantec’s water quality and treatment knowledge, skill, and experience will help us guide our clients to understand the implications of PFAS detections and develop effective PFAS solutions to provide safe water for your c ommunities.

Where We Are

Stantec has been serving clients in California for decades. We have c ontinued to grow by establishing long-term relationships with our clients based on trust and integrity, and by committing to making a difference in the c ommunities we serve. C ontact information for our main office and branch offices are shown below.

MAIN OFFICE

Pasadena

300 North Lake Avenue Suite 400

Pasadena, CA 91101

Contact: David Pernitsky

626-390-5449

David Pernitsky

Sean Larson

Sean Neprud

Bruce Wong

Simon Lin

Michael Adelman

Eric Gilmore

IRVINE

Jim Cathcart

Bita Sadri

Nadarajan

Sankaran

Greg Sebourn

Keith Rutherfurd

Dan Heston

BRANCH OFFICES

Irvine

38 Technology Drive Suite 200

Irvine, CA 92618

Contact: Jim Cathcart

949-328-2405

Sacramento 3301 C Street Suite 1900

Sacramento, CA 95816

Contact: Fletcher McKenzie 212-330-6116

Portland

601 SW Second Avenue Suite 1400

Portland, OR 97204

Contact: Andrew Nishihara

503-220-5432

Bellevue

1687 114th Avenue SE Suite 100

Bellevue, WA 98004

Contact: Kim Pugel

425-289-7374

City of Riverside Stantec Office

Locations and Teams

Our proposed Stantec Team consists primarily of local technical experts, many of which have PFAS and water treatment experience. Our proposed Project Manager, David Pernitsky, has a proven track record executing complex water projects and is committed to delivering your project.

Innovative, Fit-for-Purpose Solutions: Our team will provide on-call planning, design, bid phase support, and construction phase support services to address your needs. We will work with you to evaluate options to optimize site layouts, to combine centralized treatment facilities, and to consider the latest in industry knowledge about PFAS treatment.

PFAS Treatment Experience

Our designs have satisfied regulatory limits that push the boundaries of existing solutions. We continue to conduct research in the application of developing technologies, and impacts of contaminants on clients, through our S tantec Institute of Water Technology and Policy, including a focus on PFAS treatment. Due to new regulations, S tantec recognizes the City’s water resource landscape is changing. This furthers the need for safe, reliable local water supplies and for treatment systems to protect public health. Our team has the right experience to support the City through this new landscape, as demonstrated by our recent project experience (see table to the right).

Litigation, Mediation, or Arbitration in the Past Five Years

Benefits of the Stantec Team

Spectrum of PFAS expertise from scientific assessment to technologies for water treatment and remediation

Geographic perspective with our PFAS support to clients in California and across the United States and Canada

Multi-stakeholder viewpoint—we are providing PFAS solutions to municipalities, private-sector industrial clients, and national governments

Broad in-house capabilities including feasibility evaluation, surveying, advanced 3D design, permitting, stakeholder outreach, and groundwater modeling

Stantec has been helping local governments, businesses, and federal agencies with scientific and technological solutions to deal with PFAS issues for more than a decade. Our experience has shown the importance of being open and clear when working and communicating with communities across the US.

There are no unsatisfied judgments or arbitration awards outstanding against Stantec. Stantec does have some legal proceedings, lawsuits, or claims pending. These are a normal part of professional services industries. All have been reported to S tantec’s insurers who are in the process of adjusting/managing them. None will have a material effect on the financial position of the company or i ts ability to undertake this assignment. Perhaps of greater comfort to our clients is the fact that S tantec seeks to deal with client c oncerns and claims promptly and fairly through i ts R isk Management group. As a public company, S tantec has substantial assets and maintains a high professional liability insurance limit. Stantec’s claims history has resulted in relatively low insurance premiums when c ompared with f irms of similar size and character.

Claims or Disciplinary Action Within the Past Five Years

Stantec is involved in thousands of projects annually over a vast ge ography. S tantec provides professional services and has been subject to inspections and investigations related to c ompliance with various regulatory matters, and has received warnings, citations and orders as a result. In the interest of transparency, we do advise that we have been subject to a few administrative penalties, some orders and warning letters relating to regulatory matters. In each instance, S tantec c ooperated fully with the applicable regulatory agency towards a prompt resolution. Importantly, Stantec has not been c onvicted for any violation of any serious federal, provincial or territorial laws. As part of Stantec’s c ontinual improvement process, our functional and Risk Management teams take proactive s teps to review and update practices and procedures to prevent incidents from occurring.

No claims or disciplinary action taken against any of the Consultant’s key personnel within the past five years.

Consultant

Personnel Resumes

The following pages c ontains resumes that include the names, contact numbers, and descriptions of experience, along with any licenses and/or certifications, of all key personnel assigned to perform the Services. Additionally, we have identified the names and titles of our professional team members.

Our Subconsultant: Ninyo & Moore

We have included our longstanding subconsultant partner of 35 years, Ninyo & Moore Geotechnical & Environmental Sciences Consultants (Ninyo & Moore), to perform geotechnical services for this project. They are a minority-owned, multidisciplinary consulting firm that provides high-quality geotechnical and environmental consulting services, and bring direct experience working on City of Riverside projects in the past, including PFAS sampling for the Tequesquite landfill. They provide consulting services in geotechnical engineering, construction inspection and testing, engineering geology, hydrogeology, hazardous waste remediation and environmental assessment. In addition, Ninyo & Moore offers fully equipped, well-staffed, state-of-the-art laboratory facilities performing a range of laboratory testing services under the supervision of a registered civil engineer. Ninyo & Moore’s laboratories are capable of performing a wide variety of soil, concrete, masonry, asphalt, steel, fireproofing, and high strength bolt testing. Since 1989, Ninyo & Moore has provided geotechnical and e nvironmental services on over 500 projects company-wide.

Stantec has partnered with Ninyo & Moore for 35 years and their expertise will verify all geotechnical aspects are thoroughly addressed, contributing to the overall success and integrity of the project.

David Pernitsky

Ph.D, PE

Project Manager

Stantec | Vice President, Water Treatment, US Pacific

P: 626-390-5449

32 years of experience

Location: Pasadena, CA

Licenses/Certifications:

Professional Engineer #95428 (CA), #28823 (NM), #31582 (NV), #52725 (Alberta), #16215 (Saskatchewan)

Education:

Ph.D., Environmental Engineering, University of Massachusetts at Amherst

MS, Environmental Engineering, University of Alberta

BS, Civil Engineering (Co-op), with Distinction, University of Alberta

Professional Background

David is a subject matter expert and lead water treatment resource for Stantec’s municipal and industrial water treatment projects. He brings 32 years of e ngineering experience in drinking water treatment, groundwater remediation, wastewater reuse, wastewater treatment, and water resource management. David has led many projects involving s tate-of-the-art technological solutions such as dissolved air f lotation (DAF), ozonation, GAC, IX, membrane f iltration, reverse osmosis (RO), and high rate granular media filtration systems.

Relevant Project Experience

PFAS Treatment System

Designs

| OCWD | Santa Ana, CA | Process Reviewer

Stantec prepared separate IX treatment system designs for PFAS removal at four well sites, treating f ive groundwater wells. David provided process review for a IX-based groundwater treatment plant.

Walnut Pump Station PFAS Treatment | OCWD |

Santa Ana, CA | Process Engineer

David is serving as process engineer for a PFAS treatment alternative analysis and c onceptual design for a centralized groundwater treatment system. IX and GAC-based options are being analyzed.

SAFER Program | SWRCB | Various Cities, CA | Technical Advisor

California’s S AFER program was designed to provide resources to failing and s truggling water systems across the s tate to help manage their systems, c omply with regulations, and overcome long-standing c hallenges. David provided water treatment technical input to various water treatment assignments within this project. T his includes assessing options to modify an existing nitrate and uranium IX treatment facility to also reliably remove PFAS for a small system in Lake Morena V iews and evaluating treatment options for a small system in San Luis O bispo. GAC and IX-based options are being evaluated.

Water Station 4 PFAS Treatment Facility | City of Vancouver | Vancouver, WA | QA/QC Reviewer

David provided QA/QC review of design deliverables for PFAS treatment modifications to Water Station 4 (WS-4), a centralized treatment facility treating groundwater from six wells. T he existing facility included t wo air s tripping towers for pH adjustment, a booster pump s tation discharging water to the distribution system, c hlorine gas disinfection, and sodium f luoride addition. Based on pilot results, S tantec selected a flexible treatment system where GAC would be added as the initial treatment method and IX could be retrofit sometime in the future. T he PFAS treatment facility will be designed for 10,700 GPM (15.4-MGD), the proposed future build out capacity of WS-4. The booster pump s tation includes three variable speed pumps with a total capacity of 12,000 GPM. Initial construction will include 8 pairs of leadlag GAC vessels, with expansion to 10 pairs. T he internal design of these vessels will allow easy c onversion to use with IX resin in the future, if needed. T he project also includes replacement of the gas c hlorination system with a new onsite hypochlorite generation system and a new sodium f luoride saturation and dosing system.

San Fernando Groundwater Treatment Project | LADWP | Los

Angeles, CA | Technical Advisor

David oversaw the design build of two WTP facilities of approximately 15,000 GPM each to remove VOCs (1,4-dioxane, P CE, TCE) from contaminated aquifers to meet drinking water regulations. The treatment train included a U V/H2O2 AOP followed by GAC adsorption, followed by sodium hypochlorite, aqua- ammonia, and fluoride addition.

David

Pernitsky (cont’d)

Boiler Feed WTP | Irving Pulp and Paper Limited | Saint John, NB, Canada | Technical Advisor

David provided technical oversight of process selection and design for a 2,500-GPM (3.6-MGD) ultra-pure boiler feedwater treatment plant. The treated water quality targets included specifications of less than 0.2 mg/L TOC and less than 0.2 us/cm cationic c onductivity. S tantec evaluated multiple technologies for TOC reduction, including: c oagulation, ultrafiltration (UF), GAC, conventional downflow IX, suspended IX, reverse osmosis (RO), and electrodeionization (EDI). A treatment process consisting of c oagulation, immersed UF, two-pass RO, and EDI polishing was selected for detailed design and implementation.

Diemer WTP Filter Rehabilitation | Metropolitan | Los Angeles, CA | Design/Quality Manager

David was quality manager of a multidisciplinary design team for the preliminary design of upgrades to 4 8 dual-media gravity f ilters at the 520-MGD Diemer WTP. T he upgrades included new lowprofile underdrains, f ilter media replacement, backwash trough replacement, surface wash system upgrades, and upgrades to filter c ontrol consoles and c ontrol logic. The options for managing media carryover to the backwash waste reclamation plant were also investigated. David also represented the design team in the c ombined VE/constructability Review workshops, which were facilitated by a third-party V E c onsultant in 2024. David recommended an innovative approach that addressed media testing c oncerns from the client’s water quality division, while also simplifying c onstruction contract execution and saving six months on the overall schedule. Additionally, David was retained as an external water treatment specialist on a V E review for Me tropolitan’s internal design team on options for ensuring seismic s tability for the wash water reclamation plant at the Diemer WTP. David provided input on the constructability, operability, and treated water quality performance of various alternatives.

Jensen and Mills Traveling Bridge Rehab | Metropolitan | Los Angeles, CA | Design Manager

As design manager, David is overseeing a multidisciplinary team for an evaluation and rehabilitation of original clarifier sludge removal e quipment for the Jensen and the Mills W TPs.

Buffalo Pound WTP Renewal | Buffalo Pound Water Treatment Corporation | Regina, CAN | Process Lead

David serves as process lead for a complex progressive design-build project to upgrade a 66-MGD treatment plant. The project involves converting the existing conventional sedimentation plant to a DAF-ozone-BAC process. The key design elements include pre-chlorination for iron and manganese oxidation, converting existing clarifiers to DAF basins, adding a new ozone c ontactor, converting existing GAC c ontactors to deep-bed BAC f ilter adsorbers, and c onverting four existing circular clarifiers to two backwash water storage tanks and two backwash waste thickeners T he project is currently in c onstruction.

Water Treatment Facility Evaluation and Slaker Upgrade | City of Lompoc | Lompoc, CA | Design Manager

David served as design manager for a capacity evaluation and conceptual design study to increase production of a 5-MGD groundwater softening plant to 10 MGD. The existing plant uses c hlorination for iron and manganese oxidation, c onventional lime softening, recarbonation, and DE f ilters.

Softening Feasibility Assessment | City of Maple Grove | Maple Grove, MN | Process Lead

David is leading a s tudy to evaluate adding softening capability to an existing prechlorination greensand f iltration groundwater treatment plant for a 5 0-MGD design f low. T he options included adding conventional lime-soda softening or pellet softening ahead of the existing f ilters or adding nanofiltration downstream of the existing filters. Additional options for adding PFAS treatment to the overall process c onfiguration were also assessed.

GAC Facilities* | California Water Service Company | Various Locations, CA | Lead Process Engineer

As lead process e ngineer, David oversaw the process modelling and detailed design of well-head GAC contactors to remove VOCs from drinking water aquifers at installations in Livermore, Chico, Bakersfield, and Visalia, California.

Professional Background

Jim has 47 years of experience in water supply and development in California. He has been responsible for 14 well equipping and/or wellhead treatment design projects, as well as numerous pipeline and pump s tation designs. Jim has also conducted several groundwater treatment s tudies for wellhead water quality c ompliance. He specializes in the planning, design, and construction management of water, wastewater, and reclamation infrastructure; master planning; ground- and surface-water treatment; pumping and s torage; and pipeline design. Jim has provided expert witness services for water system design and groundwater c ontamination issues.

Relevant Project Experience

PFAS Treatment System Designs | OCWD | Santa Ana, CA | Project Manager

Jim led the design of four wellhead treatment sites. T he design elements included preliminary and final design of IX treatment, booster pumping, chlorination, and electrical upgrades. The work also included bid phase support, ESDC, and part time inspection services. The sites include Well 40 in operation and Wells 27, 28, 31, and 38 under construction.

Walnut Pump Station PFAS Planning Study | City of Santa Ana | Santa Ana, CA | Project Manager

Stantec was requested to prepare a planning s tudy to determine necessary design c omponents to treat four existing and one future well at a centralized facility located at the existing Walnut Pump Station site. T he work also included identifying several well site mechanical, electrical and instrumentation improvements, modification to the existing c hlorination building and equipment, prefiltration with sand separators and cartridge filters, addition of e mergency generators, and evaluating both IX and GAC treatment. IX was selected based on c ompatibility with other City PFAS treatment systems and space limitations due to the need to remove some adjacent tennis courts used by the City’s school system. T he work also includes a new transmission pipe to convey water from t wo remote well sites to the treatment plant. This s tudy was conducted to accurately determine necessary well improvements and treatment requirements for preparing f inal designs under OCWD’s Round Two PFAS O n-Call program.

San Fernando Basin Groundwater Remediation | Los Angeles Department of Water & Power (LADWP) | Los Angeles, CA | QA/QC

Jim c onducted the independent QA/QC review for this progressive design-build project of t wo new groundwater treatment facilities of 38 MGD and 25 MGD. The LADWP project replenish and s tore contaminated groundwater at sites across the 175-square-mile San Fernando Basin.

Bartolo WTP* | Suburban Water Systems | Whittier, CA |

Project Engineer/ Project Manager

Jim c onducted a water supply investigation and plan for S uburban Water Systems that was followed by the design of a 14-MGD groundwater treatment system for the USEPA. Process trains included air s tripping, vapor-phase GAC treatment and s team regeneration of the GAC for several c ontaminants including TCE, PCE, and CTC, and design of a 14-MGD pump s tation.

Perchlorate Treatment Plant Design-Build*

| City of Pomona | Pomona,

CA | Design QC Manager

Jim was the design QC manager for a high-capacity singlepass IX plant at the City’s A EP facility, along with new bypass and pumping facilities upstream and downstream of A EP treatment. The project included permitting; providing a bypass of the existing AEP systems for approximately 3.7 MGD consisting of booster pumps, bag filters and associated piping, c onnections, I&C; and combining effluents from the new bypass and A EP systems and directing a total of 16.6 MGD to the new perchlorate treatment plant.

Jim Cathcart (cont’d)

Baldwin Park Treatment System* | San Gabriel Basin Water Quality Authority | San Gabriel, CA | Project Manager

Jim managed preparation of a remedial action plan, risk assessment, health and safety plan, Negative Declaration, and institutional/financial analysis for the San Gabriel Basin Water Quality Authority Project No. 2 The project involved local wellhead treatment for VOC c ontamination in the San Gabriel Basin Superfund Site.

Groundwater Treatment Plant Review* | City of South Gate | South Gate, CA | Project Manager

Jim managed a design peer review for t wo VOC groundwater treatment plants using spray aeration. O ne plant was a new 5 -MG buried c oncrete reservoir, pump s tation, and c hlorination facility. T he second was a spray aeration system retrofit of an existing s teel tank.

Well 22B Treatment System* | City of South Gate | South Gate, CA | Project Manager

Jim assisted the City in reviewing vendor plans for start-up and operation of Well 22B treatment system using ozone and U V light to remove volatile organic compounds from the well. His assistance included reviewing disinfection options, reviewing s tart-up and testing plans, and assisting with DHS permitting of the new treatment facility.

Groundwater Quality Study* | City of Monrovia | Monrovia, CA | Project Manager

Jim managed a groundwater quality study and VOC treatment alternatives analysis for the City. The preliminary report reviewed air s tripping, roto stripping, and GAC treatment processes.

A ir Stripper/Nitrate Blending for Wells 7 and 8B* | City of Pomona | Pomona, CA| Principal-in-Charge

Jim assisted in the preliminary design report and c onducted all design reviews for facilities, including a c hloramination disinfection system housed in a c hemical s torage and feed pump building, wet well modifications, two existing low-lift booster pumps and space for a third pump, motor controls, instrumentation, SCADA system integration, and miscellaneous site piping. He also coordinated with the California DHS to bring the project on-line successfully.

G roundwater Treatment Plant* | Nuevo Water Company | San Bernardino County, CA | Principal-in-Charge

Jim was responsible for designing a groundwater production well treatment system for H2S c ontamination. T he treatment system c onsisted of an air s tripping tower and c hemical feed systems for raising and lowering pH.

WTP Upgrade | Mammoth Community Water District | Mammoth Lakes, CA | Project Manager

Jim managed the study, design and c onstruction management services for S urface Water Treatment Rule compliance for the District’s L ake Mary plant. Jar testing and full scale f ilter performance testing were conducted to assess polymer effectiveness in cold, low-turbidity water. Design modifications included adding a rapid mix stage with chemical coagulant to provide an enhanced f iltration process. Other modifications included c hemical feed systems with six months of c hemical s torage during winter months.

Fluoridation Facilities Project for the Weymouth, Diemer, Jensen, and Mills Filtration Plants* | Metropolitan | Los Angeles, CA | Principal-in-Charge

Jim oversaw the overall design review and managing the preliminary design effort for addition of f luorosilicic acid chemical feed to four water f iltration plants in the greater Los Angeles area. Filtration plant capacities range from 326 to 750 MGD. The project included providing mechanical, civil, structural, electrical and instrumentation design for chemical s torage tank farms, chemical feed pumping and pipe routing, chemical injection, safety measures for handling the highly corrosive chemicals, and incorporation into the plant control system.

Yucaipa Valley Regional Water Filtration Facility Design and Construction* | Yucaipa Valley Water District | Yucaipa, CA | QA/QC

Jim provided QA/QC during design of the new $ 37.4M Yucaipa Valley Regional Water Filtration Facility, a microfiltration facility (with provisions to add nanofiltration e quipment) located on a 32-acre site, with an initial capacity of 12 MGD and an ultimate capacity of 36 MGD. T he facility includes microfiltration using Pall membranes, nanofiltration and blending facilities, residuals handling facilities, disinfection using sodium hypochlorite, a 6-MG partially buried prestressed c oncrete finished water s torage tank, 5,000 feet of 4 - to 4 8-inch-diameter finished water pipeline to c onvey treated water to the city’s distribution system, influent f low control, security features, and slope protection for the adjacent flood c ontrol channel.

Experience and References

The Stantec Team Meets and Exceeds Your Prerequisites

Prerequisites Stantec Experience

Have at least five (5) years of experience, within the past five (5) years under a legally registered business name, in providing services of a similar type and scope as described in the Scope of Services (“Services”) (Exhibit “A”).

Have not filed for bankruptcy under any business name over the past five (5) years.

Have registered as a “Prospective Bidder” on the City’s electronic Current Prospective Bidders List

Pre-Proposal Meeting

Experience Highlights and References

Since 2014, our team has executed similar PFAS projects with other agencies, with more than 25 projects performed within the past five years. The projects described in this section are c omparable in quality and scope to those specified in your RFP, demonstrating our technical capabilities and c ommitment to excellence. T hrough these experiences, we have honed our skills in delivering innovative solutions, managing c omplex workflows, and e nsuring timely and within-budget project completions. Each project has c ontributed to our deep understanding of industry best practices and clientcentric approaches. We e ncourage you to reach out to any of the references listed for each project for a testimony of our work.

If applicable, Consultant and/or its key personnel, shall hold an appropriate license for the Consultant’s discipline and the Services on the date the Proposal is submitted.

If applicable, Consultant shall have registered with the Department of Industrial Relations and any other required organizations.

Proposers are required to make a good faith effort to engage Disadvantaged Business Enterprises (DBEs) as outlined in Sections 33.301-33.304 of Title 40 of the Code of Federal Regula��ons.

10 years of experience delivering more than 35 PFAS related projects, with 25+ PFAS projects performed within the past five years.

Stantec has not filed for bankruptcy under any business name over the past five years.

Stantec has downloaded the RFP and registered as a Prospective Bidder on Monday, October 7, 2024.

Our project manager, David Pernitsky, and civil lead, Bita Sadri, attended your nonmandatory pre-proposal meeting on Thursday, October 17, 2024.

The Stantec team holds the appropriate licenses to complete the services, current as of the proposal submittal date, Tuesday, November 19, 2024.

Stantec is registered with the DIR. Our DIR number is 1000008020.

We have made a good faith effort to engage Disadvantaged Business Enterprises (DBEs) for this project. Doc umentation of our efforts is provided in Appendix A

PFAS Treatment System Designs

Client: OCWD

Location: Santa Ana, CA

Project Dates: March 2020 to Present

Client Reference:

Audrey Perry Associate Engineer 18700 Ward St Fountain Valley, CA 92708 aperry@ocwd.com 714-378-8245

Project Relevance:

PFAS, IX, Hydraulics Evaluation, Well Modification/Booster Pump, Treatment, Planning Studies

Team Members Involved:

David Pernitsky QA/QC

Jim Cathcart , Project Manager

Sean Larson Civil/ESDC

Sean Neprud , Mechanical

Bruce Wong , Electrical

Nadarajan Sankaran I&C

Simon Lin , Structural

Greg Sebourn Survey

In March 2020, the OCWD selected Stantec as one of six on-call c onsultants to assist nine local groundwater producers construct PFAS treatment systems on their existing wells throughout northern O range C ounty. U nder this on-call contract, Stantec was assigned to work with the City of Santa Ana to prepare separate IX treatment system designs for four well sites treating five groundwater wells. The treated water f low rate at each site varies between 2,000 and 5 ,700 GPM.

T he sites are in recreational parks or public areas with nearby commercial or residential properties. The support from S tantec to produce 3 -D renderings of the sites allowed OCWD and the city to respond to internal city departments and c ommercial property owner associations to both c ommunicate the future facility plans and satisfy the relevant s takeholders. T he first-priority site design was c ompleted in 10 months and the well began operating in mid-2023. T he three other sites are in varying s tages of c onstruction.

Design of the wellhead treatment systems included sand separators, cartridge-type prefilters, followed by a multiple-train IX system (each train is a pair of lead-lag 12 foot diameter vessels), c hlorination, electrical and c ontrols upgrades, e mergency generators, and booster pumps. IX was selected as the treatment technology for PFAS removal primarily due to footprint constraints at the sites. Stantec’s services also included reviewing water quality data, c oordination with the state Water Resources C ontrol Board Division of Drinking Water, assisting in preparing operation and maintenance plans, hydraulic evaluation for adding additional pumping for discharge into nearby reservoirs or direct to the distribution system. S tantec also assisted with bid phase services, office engineering during construction, and is providing c onstruction inspection.

Stantec was recently selected for the second round of on-call PFAS projects and will continue our work with the City of Santa Ana. The next phase of work will be a centralized plant treating four existing and one future well.

San Fernando Groundwater Treatment

Client: LADWP

Location: Los Angeles, CA

Project Dates: October 2019 to January 2023

Client Reference:

Regina Peng , Project Manager 111 North Hope Street Los Angeles, CA 90012 regina.peng@ladwp.com 213-367-4976

Project Relevance: GAC/Adsorption, Hydraulics Evaluation, Treatment, Preliminary Design, Detailed Design, ESDC, Permitting

Team Members Involved:

D avid Pernitsky Technical Advisor/QA/QC

Jim Cathcart , Technical Advisor/QA/QC

Sean Neprud , Design Manager/Process Mechanical Engineer

Michael Adelman , Process Lead

Sean Larson Project Engineer

The San Fernando Groundwater Treatment Project is a $580M effort intended to address groundwater c ontamination in one of the largest aquifers in S outhern California and restore a local source of drinking water for more than 800,000 people. As part of this effort, Stantec was retained on a progressive design-build team with K iewit to design and construct treatment facilities at the 25-MGD North Hollywood C entral Facility and the 5 0-MGD Tujunga Well Field.

The project scope included installing 6 ,500 feet of raw water pipeline, c onstructing UV treatment and s torage buildings, and adding several pumps. S tantec provided comprehensive engineering design services. T he new facilities are expected to treat over 25,000 acre-feet of water annually, reduce imported water purchases by 5 0% by 2025, and supply 5 0% of the City’s water locally by 2035.

The project involved a fast-track progressive designbuild approach, necessitating c oordination with permitting agencies and key resources. It included t wo miles of 4 8-inch diameter supply pipe with a capacity of 17,100 GPM, as well as a second WTP with a capacity of 3 4,300 GPM, featuring separate process trains. T he treatment process c ombines sand separation, pre-filtration, chemical treatment, advanced oxidation, and GAC f iltration.

This project removes existing industrial contaminants that date back to the 1940s and provide a critical, local source of clean drinking water for the Los Angeles region.

Stantec is a global leader in sustainable architecture, e ngineering, and e nvironmental c onsulting. The diverse perspectives of our partners and interested parties drive us to think beyond what’s previously been done on critical issues like climate change, digital transformation, and future-proofing our cities and infrastructure. We innovate at the intersection of c ommunity, creativity, and client relationships to advance c ommunities everywhere, so that together we can redefine what’s possible.