1-Attachment 10 - Experience and Capacity Response.pdf

1.1 DATE ESTABLISHED

1.1 OWNERSHIP

Limited Liability Company

1.2 COMPANY TYPE

We are a national company with a local office in Tempe, Arizona.

1.3 MAIN OFFICE

4701 Northshore Drive North Little Rock, AR 72118

1.3 SATELLITE OFFICES

1620 W Fountainhead Pkwy Ste 503, Tempe, AZ 85282

1.6 CONFLICTS OF INTEREST

Garver is unaware of any potential conflicts of interest between the Offeror and any State employee who functions or has responsibilities in the review or approval of the undertaking or carrying out of this contract.

1.4 Firm Overview

We’ve grown tremendously since we first opened our doors in 1919, but one thing remains the same— providing expert, responsive services with cost-effective innovations.

With more than 1,300 employees in 55 offices across 19 states, Garver is a multi-disciplined company offering a wide range of services. For more than a century, we’ve been serving as a trusted advisor and providing long-lasting solutions to water treatment and infrastructure challenges, all while meeting budgets and finishing projects on time.

Garver has built a reputation for delivering diligent service and leading-edge design, and that strong work ethic has resulted in quality projects and lasting relationships. We’ve continually supported the growth of communities across Garver’s footprint by customizing solutions using our extensive resources and nationally recognized experts.

Attachment 10 - 1.0 Company Profile Garver partners with local utilities to create proactive solutions to their challenges.

25+ Water Well Projects

Water System

Improvement Projects

Water Master Plans

50+ System Evaluations

Garver By The Numbers Past 5 Years

Attachment 10 - Experience and Capacity Response Capacity Development / Technical Assistance to Small Public Drinking Water Systems 1

1.5 Organizational Chart Our team has the expertise you

need for your projects.

Our team has experience working with the categories we are submitting on. Our team has a history of providing high quality design services for a wide range of projects, making us the right team for this contract with the Arizona Department of Environmental Quality.

We look forward to working with you when projects arise throughout the duration of this contract.

PRINCIPAL-IN-CHARGE

Mary Elizabeth Mach, PE

TECHNICAL ADVISOR

Zaid Chowdhury, PhD, PE, BCEE

TECHNICAL ADVISOR -

CORROSION CONTROL

Ashley Pifer, PhD, PE

QA/QC

Kyle Cole, PE, PMP

PROJECT MANAGER

Nam Ho, PE

DESIGN MANAGER

Brian Chong, PE

Project Engineer Rebecca Dietz Carlton Robinson Sunny Natekar, PhD

Process Engineer Buddy Boysen, PE, PMP

Mechanical Engineer Tyler Pjesky, PE

Electrical Engineer Kain Dominguez, EIT

Site / Civil Engineer Stephen Mobley, PE, CFM

Structural Engineer Dan Grant, PE, LEED AP

Hydraulic Modeling Doug Ashworth, PE

Environmental Wendy Travis, AICP

Survey Alta

Geotechnical Ninyo & Moore

POINT OF CONTACT

Project Manager Nam Ho will be your key point of contact for all questions related to the submitted offer and for task order offer requests.

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 2

1 .7 A Statement of whether, in the last five (5) years, the Offeror has filed (or had filed against it) any bankruptcy or insolvency proceeding, whether voluntary or involuntary, or undergone the appointment of a receiver, trustee, or assignee for the benefit of creditors, and if so, an explanation providing relevant details and current status;

Garver has not filed or had filed against.

1 .8 A Statement of whether there are any pending Securities Exchange Commission investigations involving the Offeror, and if such are pending or in progress, an explanation providing relevant details and an attached opinion of counsel as to whether the pending investigation(s) may impair the Offeror’s performance in a Contract under this Solicitation;

Garver has not filed or had filed against.

1 .9 A Statement documenting all open or pending litigation initiated by Offeror or where Offeror is a defendant or party in any litigation that may have a material impact on Offeror’s ability to deliver the contracted Services;

Garver, LLC, similar to most companies, periodically engages in formal dispute resolution through the ordinary course of its business. The results of such dispute resolution, including litigation, often are subject to confidentiality provisions. Garver has no pending litigation matters that would have a material impact on the company’s financial standing and/or performance on this project. If specific information involving any specific claim against Garver is needed, please contact Garver’s General Counsel, Kurtis John, at 479-287-4678.

1 .10 A Statement documenting all open or pending litigation initiated by Offeror or where Offeror is a defendant or party in any litigation with a public sector client;

Garver, LLC, similar to most companies, periodically engages in formal dispute resolution through the ordinary course of its business. The results of such dispute resolution, including litigation, often are subject to confidentiality provisions. Garver has no pending litigation matters that would have a material impact on the company’s financial standing and/or performance on this project. If specific information involving any specific claim against Garver is needed, please contact Garver’s General Counsel, Kurtis John, at 479-287-4678.

1.11 Full disclosure of any public sector contracts terminated for cause or convenience in the past five (5) years;

N/A

1.12 Full disclosure of any criminal or civil offense

Garver, LLC, similar to most companies, periodically engages in formal dispute resolution through the ordinary course of its business. The results of such dispute resolution, including litigation, often are subject to confidentiality provisions. Garver has no pending litigation matters that would have a material impact on the company’s financial standing and/or performance on this project. If specific information involving any specific claim against Garver is needed, please contact Garver’s General Counsel, Kurtis John, at 479-287-4678.

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 3

Request for Proposal Solicitation No. BPM006379

Capacity Development/Technical Assistance to Small Public Drinking Water Systems

Arizona Department of Environmental Quality (ADEQ)

1110 W. Washington Street Phoenix, AZ 85007

Solicitation Attachment – Experience and Capacity Response | Revision No. 1 | Revised 11-22

Select each of the item(s) that your firm is proposing to provide from the Table 1 below:

Table 1:

Item # Check Box Deliverable Description

Attachment 10 - Experience and Capacity Response Capacity Development / Technical Assistance to Small Public Drinking Water Systems 4

X X

X X

X

X

X X

X

X

X

Payson Phoenix Street Waterline Replacement | Payson, AZ

ESTIMATED

PROJECT COST

$454,252 (fee)

PROJECT DATES

BEGIN DATE

11/15/2023

END DATE

12/2024 (est.)

KEY PERSONNEL

KYLE COLE, PE, PMP

NAM HO, PE

The Town of Payson is in the process of upgrading their water distribution system and would like to provide better flow for their existing residential and commercial service connections. The current distribution system contains waterlines that are too small to meet current fire flow standards. Garver was hired by the Town of Payson (the Town) to provide comprehensive services from evaluation through construction for their distribution system.

To provide the best solution, we used pressure and flow hydraulic modeling to evaluate the section of the distribution system near Phoenix St and Arizona 87. Our modeling team was able to determine that 8- and 12-inch lines would meet the community’s needs and be the most cost-effective solution for the Town. We were also able to design the upgrade to run along the main roads for easy maintenance and will abandon the current 2- and 4-inch lines which run in alley ways. Our regional Arizona team has served as the coordinator, communicating with the Town to understand their goals, and then relaying that information to our Water Design Center. We’ve been able to move this project along quickly due to the excellent communication we’ve fostered with all stakeholders.

We’ll also use our open, frequent communication to run construction smoothly, secure permitting from ADEQ in a timely manner, and incorporate the Town’s input every step of the way. As of August 2024, we are at 60% design and we plan to begin installing the new water line in spring 2025.

Item #5 Design of water system improvements Item #7 Drinking water permit applications (e.g., ATC, AOC, APP, AZPDES)

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 5

Payson Ponderosa & Cherry Waterline Extension Hydraulic Analysis | Payson, AZ

ESTIMATED

PROJECT COST

$4,684 (fee)

PROJECT DATES

BEGIN DATE

2/9/2023

END DATE

06/30/2023

KEY PERSONNEL

MARY ELIZABETH MACH, PE

SUNNY NATEKAR, PHD

The Town of Payson (the Town) selected Garver to perform a hydraulic analysis in support of an approval to construct application for the Ponderosa and Cherry Waterline Extension, which had been designed by another firm. The Application to Construct Application has been submitted to ADEQ but did not yet include the Waterline Design Report required for approval.

The project was for an area that previously only had small 1- and 2-inch diameter water lines. The new design included 8-inch lines throughout that provided fire flow. With our familiarity of the application to construction process, we completed hydraulic analysis on the impacts of extending the water line.

We used the town’s existing hydraulic model for their water distribution system and updated it to include the new waterlines. Then we evaluated pressures and fire flows to determine if they met ADEQ requirements. After the hydraulic analysis, we submitted the application. We received comments back from Nam Ho, who was ADEQ’s Drinking Water Environmental Engineering Specialist at the time.

After we made revisions to meet their fire flow requirements, the application was approved.

Within the hydraulic analysis results, we provided fire flow to the new area and improved fire flow availability for the existing system. The results indicated the proposed project will maintain sufficient system pressure of at least 20 psi while providing 1,000 gpm of fire flow under maximum day demands.

Additionally, normal working pressures for the existing system were not significantly impacted by the proposed project.

Item #13 Preparing Preliminary Engineering Reports (PER)

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 6

Payson GIS Implementation Support | Payson, AZ

PROJECT COST

$46,577 (fee)

PROJECT DATES

BEGIN DATE

7/12/2023

END DATE

10/25/2023

KEY PERSONNEL

KYLE COLE, PE, PMP

The Town of Payson (Town) wanted to invest in Enterprise GIS and CityWorks systems to increase their operational efficiency. Previously, the Town only relied on CAD data, so they hired Garver to convert existing CAD and paper datasets into GIS datasets to be used in their new systems. We worked collaboratively with the Town’s IT and Planning Departments, as well as Gila County, Arizona, to provide accuracy of the geometry and attributes. Throughout the process, we implemented QA/QC protocols to provide data sharing that was accurate and up to date with the most recent versions for everyone to use. With the comprehensive data our team supplied, the Town of Payson is now on the path towards using their new CityWorks and Enterprise GIS software to streamline their processes.

Item #16 System Evaluations

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 7

Payson CC Cragin WTP Lime Solids Study | Payson, AZ

PROJECT COST

$49,500 (fee)

PROJECT DATES

BEGIN DATE

11/7/2023

END DATE

03/31/2024

KEY PERSONNEL

KYLE COLE, PE, PMP

ZAID CHOWDHURY,

PHD, PE, BCEE

NAM HO, PE

SUNNY NATEKAR, PHD

The Town of Payson (Town) owns and operates the C.C. Cragin Water Treatment Plant (WTP) which uses added hydrated lime in the treatment process. Hydrated lime is added to the finished water before it is sent to the onsite storage. The Town noticed lime settling in the finished water storage tank that must be cleaned out every year. To address this, the Town selected Garver to conduct a study to identify the causes of the issues, evaluate alternatives to address them, and recommend how to address the lime issues.

The first phase of the study focused on identifying whether the root issue was caused by the quality of the lime provided by the supplier or the water chemistry in their treatment process. At the end of the first phase, we determined the treatment plan’s chemical process was not meeting the required water quality parameters. We also identified areas to further investigate and gave them specific design recommendations by changing the chemical addition sequence in their treatment process.

Additionally, the previous lime supplier held a patent for their process of adding lime to the treatment process. When the Town switched suppliers, the supplier initiated legal proceedings against the company, citing patent infringement. Garver assisted the Town in identifying solutions to avoid infringing on the patent previously used while maintaining the functionality of the system.

In Phase 2 we conducted bench scale testing for the recommendations we provided in phase 1. We collaborated with Arizona State University (ASU) by working with their professors for lab testing. Our strong partnership with ASU allowed us to save on the high costs associated with external labs. After data was collected, we determined the Town needed to modify the chemicals they were using. We provided recommendations on what the chemical sequence needed to be in order to minimize solid potential and identify target criteria for their final water characteristics.

Cost-effective solutions: Bench scale experiments provided a cost-effective alternative to large scale design changes for the Town.

Item #13 Preparing Preliminary Engineering Reports (PER) Item #19 Water Quality Compliance Options Reports

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 8

Rio Rancho Booster Station and Transmission Line Well 17 | Rio Rancho, NM

ESTIMATED

PROJECT COST

$499,485 (fee)

PROJECT DATES

BEGIN DATE

11/21/2022

END DATE

8/23/2024

KEY PERSONNEL

MARY ELIZABETH MACH, PE

SUNNY NATEKAR, PHD

The City of Rio Rancho (the City) had ground water storage tanks in their water distribution network supplying water to different pressure zones. One major booster pump station (BPS) supplied water to two different pressure zones and was operating at a higher frequency than they preferred. To address this overwork and relieve stress on the pumps, the City wanted to decrease the added stress on the existing pump station by building a new pump station on an undeveloped site. The City selected Garver to design a future 3 MGD BPS.

During our evaluation, we conducted a data collection and hydraulic analysis which revealed discrepancies within their GIS system. We determined the proposed BPS could be used to both reduce the operational hours of the existing BPS and indirectly fill up another ground water storage tank in a different pressure zone upstream by connecting it to a recently installed transmission main. We identified the stubs and the best connection points to the transmission main. Through our Water Design Center, our pump hydraulic experts leveraged their knowledge to make sure the pumps would work for existing functions and have enough capacity for the future tank.

In conclusion, we proposed a modification to our scope to address the discrepancies found in the GIS system. Additionally, we also provided the City with recommendations for upsizing.

Permitting expertise: MCESD (Maricopa County Environmental Services Department) permitting was required for approval to construction. We assisted the City in preparing permitting documentation for MCESD.

Item #4 Construction Administration & Construction Management Item #20 Well Evaluations including water level measurements, zonal sampling & video logging

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 9

Bentonville Water Utility Master Plan Update | Bentonville, AR

ESTIMATED

PROJECT COST

$230,000 (fee)

PROJECT DATES

BEGIN DATE

7/13/2022

END DATE

12/31/2023

KEY PERSONNEL

N/A

The City of Bentonville is rapidly growing and outpacing previously planned projects. This growth required the City to update its water master plan to assess the capacity of the distribution system and identify capital improvements to meet the community’s expanding needs.

Our team developed a customized evaluation for future improvements, following a 7-step plan: Data Collection and Field Investigation, Hydraulic Model Development, Demand Allocation, Hydraulic Model Calibration, Distribution System Evaluation, Alternatives Evaluation, and the completion of the Master Plan.

We updated the hydraulic model based on discrepancies between the water lines in the model and GIS.

This model facilitated demand allocation, where we evaluated the City’s historical data, including water production, water consumption, population growth, and connection data. This data helped us identify trends in system demands, including average and maximum day demands for different customer classes.

Working alongside City Staff, we determined the level of service (LOS) goals, which served as a set of system evaluation and design criteria for optimizing system performance. Our calibrated model enabled the City to visualize the impacts on citizens during and after the construction of improvement projects.

The improvements to address long-range (potentially build-out) conditions were identified first, serving as a roadmap for identifying improvements at interim horizons.

With this roadmap in place, evaluations were completed starting with the existing system and proceeding through time. System deficiencies were documented for each horizon, and the projects needed to address these deficiencies were identified from the long-term roadmap. We also prepared alternatives combining operational, maintenance, and system improvement recommendations.

Item #18 Water Master Planning

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 10

Flagstaff Wildcat Hill PEPS Improvements | Flagstaff, AZ

ESTIMATED

PROJECT COST

$90,556 (fee)

PROJECT DATES

BEGIN DATE

3/30/2021

END DATE

09/30/2021

KEY PERSONNEL

NAM HO, PE

KYLE COLE, PE, PMP

BRIAN CHONG, PE

REBECCA DIETZ

The City of Flagstaff owns and operates two advanced wastewater treatment facilities, the larger being the Wildcat Hill Water Reclamation Plant (WRP). Wildcat Hill can treat 6 million gallons of wastewater per day through primary, secondary, tertiary, and biosolids treatment trains. Treated effluent is used for irrigation, dust suppression, and other approved uses. Excess effluent is discharged into the nearby Rio de Flag River

Because of the mountainous topography, primary effluent must be pumped through a primary effluent pump station (PEPS) to the integrated fixed-film active sludge (IFAS) process. The current PEPS’s pumps are oversized, and operations staff have difficulty adjusting the pumps to work efficiently in variable flow conditions.

In 2018, Garver prepared a technical memorandum that evaluated alternatives to improving the reliability and operational flexibility of the PEPS. During Phase II of this project, Garver was asked by the operations staff for an additional, alternative configuration to be modeled because of concerns over larger pumps and their ability to turndown adequately to handle low flows. We modeled two VFD operated jockey pumps that will handle low flows and four peak flow pumps (3 duty, 1 standby) to handle higher flows.

The recommended alternative was to build a new pump station with smaller pumps.

Our team provided project management, design, and coordination with Coconino County for final approval. In addition to design of the pump improvements, we also performed design for wet well wizard for mitigation of GOF, redundant odor control vessel for headworks and PEPS, and arch flash study specification.

Item #16 System Evaluations

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 11

Mont Belvieu Water Well No 12 | Mont Belvieu, TX

ESTIMATED

PROJECT COST

$559,786 (fee)

PROJECT DATES

BEGIN DATE

10/26/2021

END DATE

05/26/2023

KEY PERSONNEL

N/A

Garver performed detailed design and construction phase services to provide water supply, storage, and flows to meet the initial phase of the City’s growing demand. The City identified the area near Water Plant No. 1 for the water plant improvements and new water supply well. The detailed design and construction phase services included one new groundwater well, yard piping, site improvements, electrical improvements, and a new concrete masonry unit (CMU) building. The wellfield collection line and discharge line from the expanded water plant were based on the anticipated flow rate and connected the discharge line to the existing distribution system.

To meet TCEQ requirements, Garver provided a technical memorandum that included an engineering report detailing current conditions, water loads and demand, water quality, and any additional information required to gain TCEQ approval for the updates to the system.

Item #20 Well Evaluations including water level measurements, zonal sampling & video logging

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 12

Waxahachie Lead and Copper Rule Assistance | Waxahachie, TX

ESTIMATED

PROJECT COST

$135,300 (fee)

PROJECT DATES

BEGIN DATE

3/31/2022

END DATE

09/30/2022

KEY PERSONNEL

ZAID CHOWDHURY,

PHD, PE, BCEE

ASHLEY PIFER, PHD PE

Garver assisted the City of Waxahachie with their LCRR program, which was broken up into two task orders. Serving as a technical guide, for task order one, our team first reviewed the City’s field data collection protocol to assist in development of their lead service line asset inventory, and we provided reviews and input as the City has populated their inventory. Garver’s water quality experts assessed the City’s water quality and recommended operational improvements at their two water treatment plants to improve chemical stability in the distribution system. Follow-up sampling was recommended to assess the need for additional improvements to address water quality concerns at the individual water treatment plants. Under the second task order, we provided guidance to the City regarding their continuing work to complete their lead service line asset inventory. We developed a service line replacement plan consistent with regulatory requirements and guidance for the replacement of service lines ahead of the LCRR compliance date. Garver’s funding procurement experts assisted the City in applying for grants and loans to fund the service line replacements identified.

Additionally, Garver developed sampling protocols for further assessment of water quality concerns identified in Task Order No. 1. After completion of the initial service line asset inventory, Garver updated the City’s sampling plans and protocols for LCRR sampling at taps and in schools and licensed childcare facilities.

Item #11 Preparing Corrosion Control Assessments & Treatment Recommendations

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 13

Ponca City Water Treatment Plant Residuals - Construction | Ponca City, OK

ESTIMATED

PROJECT COST

$49,270 (fee)

PROJECT DATES

BEGIN DATE

6/15/2021

END DATE

08/11/2022

KEY PERSONNEL

MARY ELIZABETH MACH, PE

Garver provided the City of Ponca City with bidding, construction administration, and construction observation services for new lime sludge drying beds at their water treatment plant (WTP) to improve residuals handling. The aim was to produce a sludge dry enough that it could be removed from the site by truck. The previous beds acted more like dewatering lagoons, and the sludge did not get dry enough for removal. Garver designed a new water recovery basin and recycle pump station to recover and reuse backwash water as part of the residual handling improvements. The City will construct the basin and pump station under a separate contract when funding is available.

Item #4 Construction Administration & Construction Management

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 14

Peoria Bailey Well Site Improvements | Peoria, AZ

PROJECT COST

$87,516 (fee)

PROJECT DATES

BEGIN DATE

1/8/2021

END DATE

05/28/2021

KEY PERSONNEL

KYLE COLE, PE, PMP

CARLTON ROBINSON

The City of Peoria’s (the City) Bailey Well Site (W108) is located near the southwest corner of 75th Avenue and Cactus Road. Improvements were needed to provide easier access to the well pump and appurtenances, upgrade disinfection equipment, and improve site grading, drainage, and lighting.

Garver provided design services for removing the start-up water retention basin, placing a new underground retention basin, and replacing the draining method of the start-up water to the retention basin. Additionally, we designed replacement of the existing disinfection equipment; and replacement of a gate, site lighting, and exposed well discharge piping, valving, and instrumentation.

The project was constructed using a job order contract (JOC). It included permitting services with Maricopa County Environmental Services Department (MCESD) and an as-built plan preparation.

Improvements provided the City with easier site access, a safer site, and more efficient equipment.

Item #5 Design of water system improvements Item #13 Preparing Preliminary Engineering Reports (PER) Item #20 Well Evaluations including water level measurements, zonal sampling & video logging

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 15

California American Water Risk and Resiliency Assessments | Coronado, CA

ESTIMATED

PROJECT COST

$99,665 (fee)

PROJECT DATES

BEGIN DATE

6/12/2020

END DATE

11/03/2020

KEY PERSONNEL

MARY ELIZABETH MACH, PE

As a subconsultant, Garver assisted with the development of risk and resiliency assessments for three California American Water service areas to ensure compliance with America’s Water Infrastructure Act (AWIA). These assessments included an analysis of water utility assets, threats, and countermeasures along with determination of recommended improvements to mitigate risk. Garver supported collecting data information and participating in R&R assessments.

Item #15 Risk & Resiliency Assessments

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 16

PHX Booster Pump Station Rehabilitation | Phoenix, AZ

PROJECT COST

$261,683 (fee)

PROJECT DATES

BEGIN DATE

11/19/2019

END DATE

11/19/2020

KEY PERSONNEL

N/A

The City of Phoenix, Arizona, has a service area that stretches over 540 square miles and serves 1.7 million customers with drinking water. Within this vast infrastructure network are 131 water booster pump stations—many of which are nearing the end of their useful lives.

To address critical infrastructure needs, the City allocated approximately $2.8 billion over five years to rehabilitate, repair, or replace aging pipelines and pump stations within their water distribution system.

Nearly $450 million of those funds were designated for pump station rehabilitation or replacement.

Garver designed the full replacement of two booster pump stations—5C-B2 and 5J-B2—that provided potable water and fire flow protection to their respective service areas as a part of the rehabilitation.

Without these pumps functioning in prime operation, customers would have been without adequate domestic water pressure or fire protection. Garver’s role included computer modeling to confirm pump capacity and surge tank sizing, as well as the optimization of pump hydraulics to maximize efficiency and reduce maintenance needs. Our design work involved replacing existing mechanical equipment, including valves, motors, piping, and pumps; and designing new instrumentation and control systems.

Item #7 Drinking water permit applications (e.g., ATC, AOC, APP, AZPDES) Item #16 System Evaluations

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 17

Peoria Greenway WTP Disinfection Study | Peoria, AZ

PROJECT COST

$32,410 (fee)

PROJECT DATES

BEGIN DATE

9/30/2019

END DATE

04/30/2020

KEY PERSONNEL

MARY ELIZABETH MACH, PE

The City chose the Garver team to evaluate alternatives for safer disinfection technologies at the Greenway Water Treatment Plant (WTP). The Greenway WTP was utilizing gaseous chlorine for secondary disinfection and backup primary disinfection. The previous system, particularly the chlorine scrubber, had reached the end of its useful life. In lieu of further repair or replacement in-kind, the City opted to evaluate the option to replace the existing system with on-site hypochlorite generation, an inherently safer technology. Garver performed a system evaluation, which compared the operating costs for the current disinfection system to those of an on-site hypochlorite generation system. As part of the evaluation, Garver:

• Reviewed historical work orders, as well as chlorine demands and usage to develop an O&M cost for the existing system.

• Developed a planning-level opinion of probable construction cost for improvements/repairs to the previous system based on preliminary cost estimates received by the City from the system manufacturer.

• Conceptually sized an on-site hypochlorite generation system to provide disinfection at all existing dosing locations.

• Documented a siting location for the on-site hypochlorite generation system. This did not include a hydraulic analysis or hydraulic calculations.

• Developed a planning-level opinion of probable construction cost for the on-site hypochlorite generation system with a 30% contingency.

• Identified O&M activities, and the cost of replacement parts/materials used during the on-site hypochlorite generation system preventative maintenance periods, and developed overall O&M costs for the system.

• Performed a 20-year life cycle cost analysis for the previous system and the new on-site hypochlorite generation system.

• Identified qualitative advantages and disadvantages for each system, previous and on-site hypochlorite generation.

• Identified impacts that conversion to on-site generation may have had on the storage of 150-pound cylinders, used for disinfection at remote facilities, which were previously located within the disinfection building.

Item #19 Water Quality Compliance Options Reports

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 18

PHX - 24th Street Water Treatment Plant Sulfuric Acid System Demolition CA&I | Phoenix, AZ

ESTIMATED

PROJECT COST

$31,358 (fee)

PROJECT DATES

BEGIN DATE

5/15/2020

END DATE

11/16/2020

KEY PERSONNEL

MARY ELIZABETH MACH, PE

SUNNY NATEKAR, PHD

CARLTON ROBINSON

Garver provided construction administration and inspection services (CA&I) for the demolition of the sulfuric acid system at the City of Phoenix’s 24th St WTP. Garver oversaw the demolition of several system components, including the fill station, sulfuric acid piping, chemical tanks, concrete tank pads, the chemical containment area, emergency wash stations, and all associated electrical and process control equipment.

The chemical containment area’s lighting, sump pump, and discharge piping remained in service.

Our team visited the site monthly for observation, which allowed them to stay on schedule, review shop drawings, respond to information requests, and develop change order requests, as they arose.

Concurrently, Garver coordinated with MCESD to update the Approval of Construction and obtain a Clean Closure Statement.

Item #4 Construction Administration & Construction Management

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 19

Canyon Regional Water Authority Water Treatment Plant Optimization and Water Quality | Comal County, TX

ESTIMATED

PROJECT COST

$64,648 (fee)

PROJECT DATES

BEGIN DATE

8/15/2019

END DATE

12/20/2019

KEY PERSONNEL

ZAID CHOWDHURY,

PHD, PE, BCEE

The Canyon Regional Water Authority (CRWA) requested a comprehensive review of the Lake Dunlap Water Treatment Plant. The goal of this effort was to review all potential operational changes and strategies that could reduce the regulated disinfection by-product (DBP) formation potential (for trihalomethanes (THM), haloacetic acids (HAA5), chlorite, and bromate) through the WTP.

The Garver team developed and managed a bench-scale treatability study to identify the optimum level of treatment required for the Owner’s surface raw water source in order to meet drinking water quality goals. Garver’s primary goal was to evaluate how effectively each treatment regime removed turbidity, total organic carbon (TOC) and DBP precursors. Existing coagulant, poly aluminum chloride, was compared with an iron-based coagulant. Garver performed a series of jar tests to determine the optimum pH and point of diminishing return for TOC removal for each coagulant using the available raw water. Each of the jar treated water samples was analyzed for turbidity and TOC. The best performing jars were also tested for the formation of Bromate, Ozone Dose Residual, THM and HAAs using simulated disinfection conditions. Depending on the feasibility of using the recommended coagulation strategy at the WTP, the resulting treated water pH was utilized by Garver’s engineers for the evaluation of CT in the disinfection evaluation phase of the project. Garver’s engineers developed a testing plan that outlined sample collection, handling, and testing protocol. The plan identified each treatment regime and the required jar testing procedure and analysis of each sample.

Garver provided CRWA with a disinfection evaluation of the existing oxidation and disinfection regime at the WTP. Garver developed conceptual strategies to optimize disinfection with chlorine and ozonation.

Each disinfection scenario evaluated considered the number of available disinfection zones, the target disinfection residual, and type of disinfection residual.

Following the study, Garver prepared a technical memorandum, which identified recommended chemical types and dosages to achieve the Owner’s water quality objectives. Garver also led a workshop at the Owner’s facility. Through the workshop format, recommended alternatives were selected based on the analysis of each alternative and CRWA’s operational considerations.

Item #19 Water Quality Compliance Options Reports

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 20

Broken Arrow Corrosion Control Study | Broken Arrow, OK

PROJECT COST

$48,200 (fee)

PROJECT DATES

BEGIN DATE

10/26/2020

END DATE

06/30/2021

KEY PERSONNEL

ZAID CHOWDHURY,

PHD, PE, BCEE

ASHLEY PIFER, PHD, PE

The City of Broken Arrow contracted Garver to develop a corrosion control study for the City’s water distribution system. The first project phase consisted of preparing a data request aimed at collecting all relevant corrosion data from the water treatment plant (WTP) and the water distribution system to develop the corrosion control treatment (CCT) study.

Garver compiled existing data from a recently completed study to develop a description of the treated water quality and water treatment parameters, which were important to lead, copper, and iron corrosion in distribution system infrastructure and private plumbing. This data also included compilation of previously filed lead and copper rule compliance reports. We then analyzed the data collected to gain an understanding of the corrosivity of treated water with respect to lead, copper, and iron. Major chemical stability and corrosion indices were calculated, and the impacts of seasonal variability and treatment conditions on treated water’s corrosivity were evaluated based on the collected data. A desktop analysis determined how the corrosion-related indices were affected by addition of various corrosion control chemicals at the WTP. This identified several alternative approaches that could be implemented to improve water stability and minimize corrosion in the system.

Garver held a workshop to discuss observations and potential approaches for corrosion control testing with City staff. A technical memorandum of recommendations for the next phase of CCT was provided. The findings from the corrosion control study were submitted to the Oklahoma Department of Environmental Quality (ODEQ), along with an associated CCT plan that follows guidance provided by the United States Environmental Protection Agency (USEPA).

Item #11 Preparing Corrosion Control Assessments & Treatment Recommendations

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 21

Fort Smith AWIA Risk and Resiliency Assessment and Emergency Response Plan | Fort Smith, AR

ESTIMATED

PROJECT COST

$204,500 (fee)

PROJECT DATES

BEGIN DATE

1/2/2020

END DATE

09/30/2020

KEY PERSONNEL

N/A

Garver prepared a Risk and Resiliency Assessment (RRA) for the City of Fort Smith’s water system to meet the March 31, 2020 deadline for the RRA, and updated their Emergency Response Plan (ERP) to achieve compliance with America’s Water Infrastructure Act of 2018 (AWIA). Utilizing the Vulnerability Self-Assessment Tool (VSAT) database released by the Environmental Protection Agency (EPA), Garver determined assets, threats, and countermeasures that were updated for a five-year recertification. The City of Fort Smith then opted to move forward and complete a similar RRA for their wastewater systems.

As part of this, the final ERP for the City provided them with a holistic report for their assets. This ERP was submitted six months after the submittal of the RRA for the water system.

Additionally, the team also conducted a cybersecurity assessment of the City’s financial infrastructure, electronic, computer, SCADA, and other automated systems. The assessment included device inventory, network architecture, software functionality, physical facility, and plant process. Following the assessment, we conducted a workshop to define cybersecurity goals and identified security protocols, processes, policies, and procedures.

Item #15 Risk & Resiliency Assessments

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 22

Lubbock Water System Vulnerability Assessment | Lubbock, TX

PROJECT COST

$326,606 (fee)

PROJECT DATES

BEGIN DATE

10/8/2018

END DATE

9/17/2020

KEY PERSONNEL

N/A

Garver performed a monetized risk reduction analysis to determine which improvements provided the best return-on-investment. Utilizing the VSAT 6.2 tool, the team assessed the most critical assets identified, which included: the South Water Treatment Plant; Lake Alan Henry intake; two pump stations;

and the distribution pipeline and vaults. The vulnerability assessment was designed to comply with the AWIA of 2018 requirements and achieved resiliency through system redundancy via multiple water supply sources. Additionally, the team identified alternative operations, such as bypass and workarounds.

Garver also updated the Water Production and Treatment Department’s Emergency Response Plan (ERP) based on findings and reports from VSAT 6.2.

Item #15 Risk & Resiliency Assessments

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 23

East Zone 1 Infrastructure Master Plan Study Services | Phoenix, AZ

ESTIMATED

PROJECT COST

$507,174 (fee)

PROJECT DATES

BEGIN DATE

1/16/2019

END DATE

ONGOING

KEY PERSONNEL

KYLE COLE, PE, PMP

Garver is currently conducting a study to relocate existing water and sanitary sewer lines outside of the limits of the airport-controlled portion of Sky Harbor International Airport in Phoenix, Arizona. The purpose of this plan is to identify the preferred method to convert Sky Harbor International Airport and associated facilities to commercial customers of the City of Phoenix Water Services Department and meet the growth requirements defined in the Comprehensive Airport Master Plan. To achieve this goal, Garver is evaluating relocation options for existing utilities and conducting condition assessments of utilities to remain per the final relocation plans. The evaluation of alternatives includes qualitative and quantitative criteria and requires extensive coordination with on-going and proposed construction activities as well as three City departments: aviation, transportation, and water services. In addition, Garver is preparing preliminary plans for approximately 40,000 feet of 24-inch waterline and over one mile of sanitary sewer lines.

Garver’s local team brings expertise with respect to assessment and design of linear infrastructure along with the knowledge of local design guidelines and regulations required to coordinate efforts among various state and municipal agencies. Garver’s construction administration experience will facilitate work sequencing, particularly in areas of existing and on-going construction activities.

Item #18 Water Master Planning

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 24

DeSoto Water Master Plan | DeSoto, TX

ESTIMATED

PROJECT COST

$766,604 (fee)

PROJECT DATES

BEGIN DATE

1/2/2019

END DATE

04/20/2021

KEY PERSONNEL

N/A

Garver completed a comprehensive water master plan for the City of DeSoto, a city with a service population of approximately 56,000 people. Garver developed a distribution system hydraulic model and allocated demands based on parcel data. During the demand evaluation, we identified a discrepancy between the anticipated demand distribution between the pressure planes and the historical field data for the system’s pump stations. Garver deployed pressure loggers in the system and identified zonal transfers between the pressure planes due to unknown connections in the system. We also used pressure loggers to troubleshoot challenges associated with booster pump station operations and large point demands within the system. Garver utilized the hydraulic model to identify and evaluate potential modifications to the existing pressure plane delineations to mitigate existing pressure and booster pumping challenges.

Garver also completed evaluations of the City’s storage tanks, including computational fluid dynamics (CFD) modeling to confirm the hydraulic issues associated with the current design (e.g., dead zones, short circuiting, thermal stratification) and identified any potential operational and/or physical improvements needed to improve mixing in the tanks.

Garver prepared a capital improvement phasing plan for the 25-year planning horizon. The CIP systematically addressed any deficiencies found in the system, plus anticipated projects to accommodate projected growth during the 25-year horizon and meet all TCEQ requirements. The CIP identified project drivers, including capacity, operations, maintenance, conditions, water quality impacts, and regulatory requirements. The CIP also discussed ramifications and unintended consequences for not completing projects within the anticipated timeframe.

Item #18 Water Master Planning

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 25

Project 7 Water Authority Water Supply Resiliency and Efficiency Program | Montrose, CO

ESTIMATED

PROJECT COST

$543,344 (fee)

PROJECT DATES

BEGIN DATE

2/13/2019

END DATE

7/31/2027 (est)

KEY PERSONNEL

ZAID CHOWDHURY,

PHD, PE, BCEE

The Project 7 Water Authority has hired Garver as its owner’s advisor (OA) to manage each program component, which includes two large project elements: a new treatment facility downstream of the Ridgway Reservoir and a new transmission pipeline tie-in to Project 7’s existing transmission system. The treatment plant is being phased to treat the high hardness water in alignment with customer quality and cost expectations. There will also be several smaller project components including energy recovery that support the community, timing, and budget goals of the Authority.

Garver is also supporting funding applications for various federal and state programs. These include grants through the United States Bureau of Reclamation, long-term and low-cost loans through the United States Environmental Protection Agency’s (EPA) Water Infrastructure Finance and Innovation Act (WIFIA) Program and the Colorado Department of Public Health & Environment’s (CDPHE) Interim Loan and Drinking Water Revolving Fund Programs, and other potential funding sources as the project continues to progress.

Item #8 Funding assistance (e.g., PPL, PFA, RD-Apply)

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 26

Lake Thunderbird Water Reuse – Field Research Project for Inland Indirect Potable Reuse | Norman, OK

ESTIMATED

PROJECT COST

$3,448,760 (fee)

PROJECT DATES

BEGIN DATE

11/2/2017

END DATE

12/2024 (est)

KEY PERSONNEL

MARY ELIZABETH MACH, PE

Garver partnered with the City of Norman to win a Title XVI grant and lead the Lake Thunderbird Indirect Potable Reuse Pilot Program, an indirect potable reuse demonstration-scale pilot at the Norman Water Reclamation Facility (WRF) used to meet new regulatory requirements for potable reuse. The multi-barrier treatment process met stringent requirements for nutrient, pathogen, and organics removal.

Garver leveraged its wastewater treatment and reuse expertise to deliver a proof-of-concept that operated within the available facilities/footprint and maximized use of existing infrastructure for pilot demonstrations without impacting existing operations and permit compliance.

Lake Thunderbird is an “impaired water body” listed on the 303(d) list for Dissolved Oxygen, Turbidity, and Chlorophyll-a. The 15-month pilot demonstration is part of a multi-year, multi-step permitting process to eventually implement potential Indirect Potable Reuse (IPR) facilities that would augment Lake Thunderbird and reduce demand on groundwater supplies. This project was the first of its kind in the Oklahoma region, and the results from this study could impact future potable reuse projects across the country by validating a treatment strategy that does not generate a high-concentrate waste stream (brine) and the challenges associated with its disposal for inland states.

The collaborative effort between the City of Norman, Oklahoma, and Garver was named the top engineering project in the state by the American Council of Engineering Companies (ACEC) of Oklahoma, while also earning an Award of Excellence in the Transformational Innovation category from the WateReuse Association.

Sampling for PFOA/PFOS identified potential mechanisms of removal including GAC biofilters and adsorption/co-precipitation of PFAS with biological floc.

Ongoing work with the City of Norman includes a 12-month sampling and testing campaign to determine the mass balance of PFAS in the Norman WRF Solids Process Train. The sampling campaign will focus on compounds identified in the USEPA’s recent risk-based assessment of biosolids contamination, including PFOA, PFOS, and other anthropogenic organic contaminants.

Item #8 Funding assistance (e.g., PPL, PFA, RD-Apply)

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 27

SMWSA WISE Salinity Funding Support | Centennial, CO

PROJECT COST

$23,534 (fee)

PROJECT DATES

BEGIN DATE

1/26/2024

END DATE

03/30/2024

KEY PERSONNEL

N/A

WISE (Water, Infrastructure, and Supply Efficiency) is a regional partnership between over ten utilities in the South Denver area that meets to discuss their projects impacting their water supply, the South Platte River. South Metro Water Supply Authority (SMWSA) selected Garver to help them strategize funding opportunities for various future projects and present funding strategies to the WISE board. SMWSA selected a salinity feasibility study for Garver to provide support in the application process and navigate the funding landscape.

SMWSA was concerned with their salinity levels and wanted to improve their water quality. To address this, they began looking at projects for desalination. Garver supported SMWSA through this process by providing a strategy for program selection. We selected programs from the Bureau of Reclamation that were grant-based and could fit within the perimeters of more than one of SMWSA’s potential future projects. Since SMWSA was looking at multiple projects, we created a guidebook including one-pager fact sheets for programs with grant money they’d be eligible for. We provided clear, concise documents with details including funding criteria, cost share, opening dates, and website links so SMWSA could easily select which programs to apply for.

After we provided these documents, we wrote an application for them to complete master planning across different utilities through WISE. This would create a unified vision for South Platte River planning.

We successfully prepared the application for SMWSA to submit.

Item #8 Funding assistance (e.g., PPL, PFA, RD-Apply)

Capacity Development / Technical Assistance to Small Public Drinking Water Systems 28

The Texas Water Company Distribution System Drinking Water Quality Study | Canyon Lake, TX

ESTIMATED

PROJECT COST

$42,386 (fee)

PROJECT DATES

BEGIN DATE

5/20/2020

END DATE

05/01/2021

KEY PERSONNEL

ASHLEY PIFER, PHD, PE

Garver conducted a water quality study for the Canyon Lake Water Service Company (CLWSC) that included evaluation of the Park Shores WTP and the Canyon Lake Shores drinking water distribution system. The Canyon Lake Shores distribution system is served by two surface water treatment plants:

Park Shores WTP, Sybil Lightfoot WTP, and several wells. The goal of the Canyon Lake Shores project was to understand disinfection byproduct formation and control within the distribution system, and identify possible changes to sampling sites and DBP control strategies.

Garver reviewed historical water quality data from the Canyon Lake Shores system to identify seasonal and spatial trends in DBP formation and evaluate the performance of existing air stripping systems in water storage tanks. Our team updated CLWSC’S InfoWater model to facilitate this effort.