City Council - Successor Agency - Housing Authority
September 20, 2022

COYOTE 1C TANK
Rehabilitation
Proposal To Provide
Engineering Services For
JULY 2022
July 15, 2022 TETRA TECH

TABLE OF CONTENTS
Page

1. Cover Letter ............................................................................................................................. 1

2. Project Understanding, Approach and Scope of Work ............................................................ 3

3. Firm Profile .............................................................................................................................. 10

4. Project Team ............................................................................................................................ 12 Statement of Availability ......................................................................................................... 14

5. Schedule and Workload Schedule ........................................................................................... 15

6. Fee and Rate Schedule ............................................................................................................. 16

7. Experience on Similar Projects ................................................................................................ 19 Appendix Resumes of Key Personnel
Proposals of
Subconsultants
• Leighton
Consulting, Inc. (Geotech)
Tetra Tech
160 E. Via Verde, Suite 240, San Dimas, CA 91773-5121
Tel 909.305.2930 www.tetratech.com
July 15, 2022
Gar Huang, Associate Engineer
City of Fullerton
303 West Commonwealth Avenue
Fullerton, CA 92832
Reference: Proposal for the Co yote 1C Tank Rehabilitation Dear Mr. Gar Huang
Tetra Tech is pleased to submit our propo sal to provide professional engineering services for engineering services for the rehabilitation of a potable water tank, Coyote Reservoir 1C in accordance with the provisions contained in the RFP dated June 14, 2022.

Tetra Tech is a national leader amongst its peers in the water industry.

Tetra Tech was ranked as the #1 Water Firm by Engineering News Report (ENR) in their 2020 annual survey (for the 17
th year in a row!)
of the nation’s top 500 engineering firms. We have a long history of serving the Southern California public water agencies including water districts and municipalities such as yourselves.

The Tetra Tech Team offers the following:
 Excellent Level of Performance, Responsiveness and Customer Service – The best measurement of the level performance, responsiveness and customer service that we provide is not what we say, but rather what our clients say. A list of our most recent reservoir structural seismic evaluation projects with client contact information is provided in Section 7, “experience.”
 Qualifications and Experience – Our services will be provided entirely from our San Dimas office, where our Structural Engineering Design Center is based, which provides water/wastewater related infrastructure structural engineering services for the southwest portion of the United States for Tetra Tech. Our structural engineering staff includes two California Licensed Structural Engineers (S.E.’s), with reservoir rehabilitation design experience, who have spent their entire careers with Tetra Tech. This includes Mr. Eric Yuen, P.E., S.E. (15 years/15 years with Tetra Tech) serving as Project Manager and Mr. Victor Ramirez, P.E., S.E., serving as QA/QC Manager (41 years/41 years with Tetra Tech).  Relevant Past Experience – We have extensive relevant past experience in performing on-site investigations/materials sampling/testing and structural seismic evaluation of existing reservoirs and well as experience in the design of new reservoirs. We have successfully completed Lower Acacia Reservoir for City of Fullerton, and recently completed similar Condition Assessment and Seismic Evaluation for The Emtman, University Heights, Ross, Alessandro and Sugarloaf Reservoirs for City of Riverside; Reservoir 16 for Monte Vista Water District.; Plant 128 Reservoir for Suburban Water Systems; North Glenrose Reservoir for Lincoln Avenue Water Company; all of Montecito Water District’s nine water storage reservoirs, eight of which are of reinforced concrete construction; Hunting Horn Reservoir,

Mr. Gar Huang
July 15, 2022

Clearview Reservoirs and Mira Flores Reservoir No.1 for Golden State Water Company; Sierra Madre Reservoir for City of Glendora. Refer to Section 7 “Experience” for more detail description of our recent reservoir structural evaluation experience.
 Technical Approach to Work and Completeness – Our baseline condition assessment of the Coyote 1C Reservoir will rely heavily on our on-site visual assessments of the inside of the structures. Experience that our current project team has accumulated during the visual examinations of over 30 tanks will allow us to accurately evaluate the reservoir. This helps to ensure a more focused approach, both during our on-site field examinations and back in the office, while performing the structural analysis and devising our reservoir structural rehabilitation/retrofit strategies. Our goal is to generate a categorized table of the structural strength of the various components of each reservoir and a prioritized table of recommended repairs and retrofits. These tables, and the estimate of probable construction costs, which will be included in the Preliminary Design Report (PDR), will be valuable tools in the City’s planning of facility improvements.
 Cost Effectiveness of Proposed Scope of Service – All of our services will be provided from our San Dimas office, within 20 miles from the project sites. Our experience in the evaluations and retrofits of dozens of existing reservoirs and over twenty designs of new rectangular tanks has provided us with a strong sense of what the problems are and corresponding likely solutions, so that we are not spending time and budget on issues/items of no consequence to the long-term performance and serviceability of the reservoir for the next 50-years.

We look forward to the opportunity to discuss our experience, qualifications and approach further with the City.

Should you have any questions regarding our proposal, please feel free to contact me, Eric Yuen, P.E., S.E. at (909) 305-2951 or Victor Ramirez, P.E., S.E. (909) 305-2947.

Sincerely,
Eric Yuen, P.E, S.E. Victor M. Ramirez, P.E., S.E.

Project Manager Sr. Project/QA/QC Manager
EY:tth
M:\Marketing\Proposals\FY 2022\Fullerton_Coyote-1C\3 Proposal\Draft\01-Coverltr.docx Section 2 3 TETRA TECH
PROJECT UNDERSTANDING, APPROACH/SCOPE OF SERVICES: Section 2 Project Understanding
The City is seeking a qualified, experienced consultant to provide condition assessment and engineering services for the structural evaluation, and subsequent rehabilitation, of the Coyote 1C Reservoir. The primary purpose of this evaluation is to rehabilitate the deteriorating wood roof and exterior concrete wall shell.

Additional concerns include upgrading safety components, removing, repairing, and/or replacing severely corroded materials, and evaluating the structural integrity and stability of the reservoir.

Coyote 1C Reservoir 1C is a potable water reservoir located at 2470 West Pioneer Avenue, Fullerton, CA 92833. It was constructed in 1958 and has a capacity two million gallons. The tank is partially buried, predominately aboveground, circular concrete tank. This reservoir has a concrete inner wall that creates a smaller inner tank that can hold about 0.2 million gallons with a valve pattern that allows it to be isolated separately. These valves were recently replaced and the City reports that they are in good working order, thereby allowing this tank to stay in partial service during maintenance. As described in the RFP, the tank exterior wall shell has noticeable cracking and calcium buildup, but no noticeable leakage has been observed.

A manway has been installed into the exterior wall of the reservoir at about the existing grade level, and the City mentioned there were no as-built drawings for this modification. The roof is made of wooden rafters and sheathing covered with felt and gravel and is supported by the concrete reservoir wall and concrete columns.

Termite droppings were noted at the two wooden access hatches which indicate there may be potential termite damage to the wood roof framing, per the 2007 Dive Report. Facia boards and screens damages were also noted at a few locations. The City staff has not noted any chlorination issues or excessive sedimentation issues.

Dust is noted by the City staff to be floating on the surface of the water and may have entered through broken roof screens. The City is also concerned about the configuration and condition of the exterior ladder and interior ladder for safe access and the condition of the corroded cast iron inlet/outlet pipes, drain valves, and overflow riser inside the reservoir.

Project Approach
Our baseline condition assessment of the reservoir will rely heavily on our on-site visual assessments of the structure. The condition of the concrete is critical to the performance of the reservoir. Some basic non- destructive tests such as the hammer tapping test will reveal areas where the reservoir structures may need repair. The condition of the existing wood roof system, concrete surfaces, wall base, vertical wall joints, and floor slab joints are significant items that affect the overall performance of the reservoirs during earthquakes. The configurations and existing conditions of the access ladders, hatches, vents, sampling taps, etc. will affect the regular operation of the reservoirs. The experience that our current project team has accumulated during the visual examinations of over 30 reservoirs will allow us to make good judgements such as when considering the length, width, orientation, and location of concrete crack to determine the impact on the structure strength. This past experience will allow us to accurately evaluate the Coyote 1C Reservoir.

The reference drawings that were included with the RFP contain sufficient information such as reinforcing, wall, floor slab, roof slab, high water level elevation, wall footing, and joints details for our evaluation team to identify and locate many of the items that will require visual examination and will help us perform a desktop assessment of the reservoir structure. However, the drawings do not provide information regarding the design concrete compressive strength, the reinforcement yield strength, or the soil design parameters. Unless the geotechnical reports for the reservoirs are available or additional field testing is performed, we will need to make conservative assumptions based on the most common material Section 2 4 TETRA TECH
used during the period when the reservoir was constructed and possible backfill soil type and the building code prescriptive values to determine these design parameters. The seismic accelerations that we will use in our evaluation will be taken from the database of the USGS mapped seismic accelerations that is maintained by SEAOSC/OSHPH (https://seismicmaps.org/). As an additional optional scope item, Leighton Consultants, our geotechnical subconsultant, can provide site specific seismic design data, soil lateral pressure, and shallow foundation bearing pressures. In addition, since this reservoir is built in a hillside site, the downhill slope stability is critical. If this reservoir were to fail, it could flood the apartments downslope to the south and beyond. Our geotechnical subconsultant can perform a slope stability evaluation and analysis which will require a Certified Engineering Geologist downhole logging to the toe of slope elevation. This additional geotechnical input will help us refine our structural evaluation and seismic analysis.

Our goal is to combine the information we gather in the field investigation and the findings of our structural analyses to generate a categorized table of the structural strengths of the various components of each reservoir and a prioritized table of recommended repairs and retrofits. These tables, and the estimate of probable construction costs, which will be included in the Preliminary Design Report (PDR), will be valuable tools in the City’s planning of facility improvements.

With this approach serving as the framework for all of our efforts, the following is our proposed scope of services.

Scope of Services
Our Scope of Services is based on the “Scope of Work” that was provided in the City’s “Request for Proposal”, which we have expanded upon to further describe our proposed services to provide a complete project and allow the City ample opportunities for review and input during the course of our services.

Additional scope items have been added initalics. A table that lists the deliverables assumed in our scope of services is included at the end of this section.

PHASE I PRELIMINARY ENGINEERING

1. K ICK-OFF AND COORDINATION MEETINGS
A. Project Kick-Off Meeting - Conduct a project team kick-off meeting via teleconference to introduce the Tetra Tech design project team members to the City, and establish points of communication between the design project team and the City. An agenda, Project Team Contact List, and draft project schedule will be circulated prior to the meeting for input by project team members. Subsequent to the meeting, a draft of the meeting minutes will be prepared and circulated to the meeting attendees for review and comment, prior to distribution of the final draft.

B. Internal Project Design Team Kick-Off Meeting - Meet internally with Tetra Tech project design staff which will include those not in attendance at the Client Kick-Off Meeting in order to disseminate project requirements, goals, objectives, budgets, and schedule.

2. R EVIEW OF EXISTING DOCUMENTATION
Review existing relevant documentation provided by the City to acquaint ourselves with the existing facilities and what information is available, and to gain knowledge of their past maintenance/repair history. They include:
· Record Drawings (already provided)
· Improvement and/or repair plans (not available)

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· Past Investigations (2007 Dive/Corr reports already provided) It is our understanding that all information/documentation available to the City was provided along with the RFP. Our structural analysis of the reservoir will be based on the available information and dimensions that we gather from the site reconnaissance. This includes the dimensions of all of the structural components including the size and spacing of all concrete reinforcing. We will make educated conservative assumptions about any missing material properties based on our experience for the evaluation.

As an additional scope of work, our geotechnical engineering subconsultant will provide a desktop evaluation of potential geologic hazards, slope stability evaluation/analysis, site seismicity, lateral soil bearing pressures, and shallow foundation allowable soil bearing pressures. Two prevailing wage bucket auger borings (<50 feet), Certified Engineering Geologist downhole logging to the toe of slope elevation, and a drone topographic survey will be required for the geotechnical exploration and slope stability evaluation. The results of their evaluation will be compiled in a report that will be included in the PDR. The cost for the geotechnical services is included in the “Optional Added Scope” Price Proposal. The additional geotechnical scope is recommended because there apparently is no available geotechnical data for this hillside site. From a professional standard of practice viewpoint, a basic geotechnical scope item for critical infrastructure (or even a house) is slope stability (seismic and static). There are bedded sediments at this site, regionally mapped as sloping out-of-scope (adversely). It is not recommended to run any geotechnical work for this site without checking slope stability. If this tank were to fail, it could flood the apartments at the downslope to the south and beyond. Seems such risk warrants the geotechnical slope stability analyses.

3. S ITE RECONNAISSANCE
Health & Safety Plan Preparation- Before any team members begin any of their field investigations, in accordance with company policy, Tetra Tech will prepare a Health & Safety Plan (HASP) for use by Tetra Tech team personnel (including
subconsultants) who will be visiting the project site. The HASP will identify the locations and phone numbers of the emergency care providers and first responders nearest to the project site equipped to perform confined space evacuations. All Tetra Tech staff and subconsultants, that are anticipated to enter confined spaces, have been trained in confined space entry safety procedures. All of our field personnel entering any confined spaces will be equipped with the necessary safety equipment (hardhats, safety vests, fall protection safety harnesses, and lanyards). Tetra Tech maintains all of the aforementioned Personal Protection Equipment (PPE) for our field staff. Tetra Tech will provide the confined space entry attendant and all necessary equipment to allow for confined space entry into the reservoir as noted above.

Tetra Tech Reservoir Evaluation
Personal Protection Equipment (PPE)
Section 2 6 TETRA TECH
A. Tank Filled
Interior- Visual examine the underside of wood roof framing, top of concrete support columns, and top of concrete wall to observe signs of wood rot, corrosion, cracking, or other structural disturbances. This examination will be conducted with the use of inflatable kayaks (one person per kayak, two kayaks total). To facilitate this examination, the water level will need to be raised to approximately 36” below the lowest point of the roof structure to allow unfettered navigation of the kayaks throughout the interior of the reservoir. All materials that will come in contact with the water (kayaks, oars, ropes, etc.) will be disinfected with a 600 ppm chlorine solution prior to entry into the reservoir.

Exterior- Visual examine the top side of the reservoir and the exposed side wall for signs of cracking or other structural disturbances.

B. Tank Empty
Interior- Examine interior wall surface, inner wall,
columns, and floor surfaces not visible during our
examination with the tank filled, in conjunction with
Dive/Corr’s 2007 underwater inspection report. Our
examination will include checking for signs of rebar
corrosion, concrete cracking, spalling, or other
structural disturbances. With the aid of a 12-foot long chain, held at both ends with rope and dragged across
the floor slab, the location and extent of possible
subgrade voids beneath the floor slab, if any, will be
located and marked on the drawing for future
reference during the preparation of the reservoir rehabilitation improvement drawings. Our ex
amination will also include all the exposed piping inside the reservoir. To facilitate this examination, we request that the City pressure wash all silt deposits and sediment from the floor slab prior to our site visit. The “tank empty” examination is part of the optional scope o f work.

This optional scope is highly recommended as the inspection team will be able to assess all the interior e
lements that cannot be accessed when the tank is filled, and it will give the team a comple
te picture of the condition of the reservoir to provide a comprehensive evaluation.

Site Reconnaissance Report will be submitted to the City after the site reconnaissance. The report will include a description of what was observed for each component of the reservoir that was examined (structural, OSHA safety, corrosion/concrete deterioration, piping), and photographs with descriptions of the examined elements.

4. S TRUCTURAL INTEGRITY EVALUATION ANDSAFETY REVIEW
A. Structural Integrity Evaluation
Perform preliminary structural analysis of the existing reservoir structure based on the drawings provided by the City, based upon ACI 350.3.06 and the 2022 California Building Code.

Check Existing Reservoir Structural Components:
· Wood Roof System (Gravity and Seismic)
Engineer Examining Tetra Tech
Structural the Underside of a Reservoir
Roof Slab
Tetra Tech Structural Engineers dragging a
chain across the floor of a reservoir floor slab
to detect subgrades voids beneath

Section 2 7 TETRA TECH
· Roof to Wall Connection (for tangential/in-plane lateral load shear transfer) · Reservoir Exterior Wall and Inner Wall
· Column and Column Footing
· Wall to Wall Footing Connection
· Wall Footing
· Sloshing Wave Height vs. Freeboard Provided
· Overall Stability
Structural Analysis of Improvements to be performed for each of the above found to be deficient.

This analysis will be complete enough to perform a budgetary estimate of probable construction cost, but not necessarily complete enough to for bidding and construction. The balance of this analysis will be completed in the Phase II Final PS&E.

B. Safety Evaluation
Evaluate whether the reservoir access and safety components are per the latest OSHA safety standards.

5. D EVELOPMENT OF PRELIMINARYDESIGN REPORT (PDR)
The Preliminary Design Report (PDR) will summarize all of our work performed during Task I. Our report will include a summary of our on-site visual examinations, our Preliminary Structural Analysis of the existing reservoir, identification of the weaknesses of each of the structural components, and a prioritized list of recommended improvements.

Our PDR is anticipated to include the following sections:
· Introduction- Provides a background of the events leading up to the PDR, including the project goals and objectives;
· Executive Summary- Provides an overall summary of our work performed, our field observations, the findings from our reservoir evaluations and structural analysis, and our conclusions and recommendations;
· On-Site Visual Examinations- Summarizes the Site Reconnaissance Reports provided under Task

3. · Reservoir Mechanical Aspect Discussion - Assessment for piping inside the reservoir and the issue of not having an air gap at the drain/overflow and conceptual retrofit options. · Preliminary Engineering Analysis and Findings - To summarize the results of our analysis, a Demand/Capacity (D/C) Matrix will be prepared for presentation in PDR, showing the calculated demand/capacity ratios for each reservoir structural components analyzed. Provides a detailed discussion of the issues.
· Recommendations - Provides retrofit or replacement options for deficiencies found in the reservoir and detailed discussion that will help lead to the selection of the recommended remedial alternatives.
· Identify Limitations in Existing Tank Structure – Determine the maximum safe operating level for the existing reservoir without seismic retrofit based on current seismic design standards. · Preliminary Estimate of Probable Construction Cost for retrofitting the reservoir. · Evaluation of the need and cost for removing the existing reservoir and replacing it with a partially buried concrete tank of the same capacity to meet present-day seismic requirements.

Section 2 8 TETRA TECH
· Schedule of design/construction activities;
· Drawing Exhibits that document our Field Investigation observations and conceptual improvements as recommended in our PDR;
Upon completion of the City’s review of our Draft PDR, we will meet with the City to discuss their review comments. Following our review meeting, we will proceed to finalize the PDR, incorporating the City’s latest review comments. An electronic copy of the updated PDR will be submitted to the City via email prior to printing, so the City can confirm that their review comments were satisfactorily addressed.

6. ENVIRONMENTAL DOCUMENTATION (OPTIONAL ITEM)
If the PDR presents recommendations that require additional documents for environmental approval, Tetra Tech can provide the City with a work scope and fee to cover the preparation of these documents, which may include additional studies or an EIR. The scope and fee will be provided when the nature of the environmental documentation is more clearly defined during the preparation of the PDR.

Section 2 9 TETRA TECH

PHASE II AND III FINAL PS&E AND BID EVALUATION AND CONSTRUCTION PHASE

ENGINEERING SERVICES (NO FEE INCLUDED)

1. F INAL PS&E
Upon final review and acceptance of the Preliminary Design Report (PDR) by the City, we will prepare a proposal for the preparation of the final design construction documents, namely, the Plans, Specifications & Estimates (PS&E) to be submitted at the 60%, 90% and 100% stages of project completion. The preparation of the construction documents during the Final Engineering Design Phase will be based upon the selections made by the City from the Preliminary Design Report (PDR) recommendations.

2. B ID ASSISTANCE
Tetra Tech will assist City staff as required in the bid process including attending pre-bid meeting and responding to pre-bid Request for Information (RFIs).

3. C ONSTRUCTION SUPPORT SERVICES
Tetra Tech shall participate in the pre-construction meeting, review submittals and respond to RFI’s.

Include unit costs per submittal review and RFO response. *Fee for Phase II and III is not included in this proposal because it is heavily depending on the finding from phase I and the recommendations selections make by the City.

LIST OF DELIVERABLES
Milestone Deliverables
Phase I, Task 1: Project Kick-Off
Meeting
Prior to Meeting: Agenda, Draft Project Schedule
Following Meeting: Minutes, Final Project Schedule
Phase I, Task 3: Site Reconnaissance Site Reconnaissance Report: one (1) digital copy in Adobe PDF format Phase I. Task 5: Preliminary Design
Report (PDR) Preparation
Draft PDR: one (1) digital copy in Adobe PDF format
Final PDR: Three (3) hard copies; one (1) digital copy in Adobe PDF format
Phase I, Task 6: Environmental
Documentation (if required)
Initial Study and/or EIR
Phase II, Task 1: Final PS&E 60%, 90%. 100% Progress Plans, Specifications & Estimates, Structural Calculations: Electronica Set, Three (3) sets of prints on 24” x 36” bond for 100% Plans only.

Final Plans, Specifications & Estimates: One (1) mylar set of drawings; one (1) digital copy in Adobe PDF and native format of Specifications and Estimates
Section 3 10 TETRA TECH
FIRM PROFILE: Section 3
Tetra Tech is a full‐service national and international engineering consulting firm based in Pasadena,
California with a substantial global presence focused
on helping our clients conceptualize and execute
innovative solutions. Our global internal network, facilitated by our signature initiatives program, brings together best of class experts for our key service lines and customers—experts who are committed to your project and who bring experience and perspective from around the world. At Tetra Tech, we begin at the earliest stage of a project by applying to problems and developing solutions tailored to our clients' needs. We continue to support our clients throughout the entire project life cycle with consulting, engineering, construction management, operations and maintenance, and IT services—offering these services individually or as part of our full-service approach.

As a global company, Tetra Tech brings a breadth of technical knowledge and capabilities as well as the international geographic reach and portfolio to address our clients' needs in our water, natural resources, the environment, infrastructure, and energy service lines.

We offer integrated services—from front-end science and planning through design, construction management, and operations optimization for projects located throughout the world. In 2021, ENR ranked Tetra Tech as the Number 1 provider of Water, Environmental Management, and Wind Power services among the top firms in the United States.

Established in 1966, Tetra Tech is a full-service, multi-disciplinary engineering consulting firm, specializing in civil engineering, water resources and environmental engineering, and construction management. The firm comprises more than 21,000 professionals with expertise in 50 technical disciplines, and over 450 offices worldwide.

Tetra Tech consistently ranks among the top
engineering firms annually according to
Engineering News Record. Tetra Tech’s
identification information is presented at the
right.

Tetra Tech’s extraordinary geographic
coverage allows us to provide local support
and expertise for our clients across our
service lines. Tetra Tech brings a strong
distribution of resources across Southern
California and a regional resource base of
over 600 personnel. On average, these
offices have been operating for more than
20 years, providing Tetra Tech with a firmly
established presence in the region.

CORPORATE/CONTACT

INFORMATION
CONSULTANT:

Tetra Tech
LEGAL FORM OF COMPANY:

Corporation (publically traded)
YEAR ESTABLISHED: 1966
PERSONNEL: 16,000
CORPORATE HEADQUARTERS:
3475 East Foothill Blvd, Suite  300
Pasadena CA 91107
Tel :626.351.4664;
Fax: 626.683.0060
PROJECT OFFICE:
160 E. Via Verde, Suite 240
San Dimas, CA 91773
909.305.2930
PRIMARY CONTACT:

Eric Yuen P.E/S.E.
[email protected]
909.305.2951

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With the depth and resources of a large firm, complemented by our local, close-knit teams of experienced professionals, most locally educated and having spent their professional careers in the local where they are based, Tetra Tech is highly regarded by its clients and among its peers in the fields of infrastructure and transportation. We pledge to provide you with the required design services in a professional and cooperative manner that will enhance a high level of service to the City and all project stakeholders. The Tetra Tech team is committed to open communications, joint problem solving, partnering, and teamwork to accomplish the goals of the assignment.

The ability to successfully evaluate, plan, design and rehabilitate existing municipal water storage reservoirs involves a niche area of structural engineering expertise, which involves knowledge and experience beyond that required for the design of buildings. The structural engineering group at Tetra Tech has the experience and expertise to accurately evaluate your reservoir. The analysis and design of reservoir structures must consider not only the static loading imposed by millions of gallons of water in the structure, but more importantly, the dynamic loading imposed on the structure when those millions of gallons of water accelerate due to seismic activity. The structural analysis considerations that are required for reservoirs exceed the design requirements for buildings in complexity and importance. Other important design considerations include the proper ventilation, safe access onto and into the tanks, and seismic flexibility at piping connections.

Section 4 12 TETRA TECH
PROJECT TEAM: Section 4
Tetra Tech’s strength lies in the qualifications of our project team, the individual team member’s commitment of our firm, and our knowledge of reservoir design.

These strengths will allow us to respond to the City’s requirements of this contract. Our project team is made up of structural engineering design professionals whose specialty is structural engineering of water storage structures.

Our structural design team includes our own in-house staff of structural engineers. Our team of structural engineers is experienced in the three-dimensional seismic analysis and computerized modeling of non- orthogonal structures useful for structures of these types to more closely predict structural performance during an earthquake where structural indeterminate methods are needed to take advantage of every available redundancy that the structure has to offer should the need arise.

Geotechnical engineering will be performed by Leighton Consulting, a long-standing veteran of nearly all of the reservoir structural rehabilitation/seismic retrofit projects that Tetra Tech has designed for the last 20-years.

Tetra Tech’s structural engineering team includes professionals with proven experience, who have delivered many similar reservoir structural/seismic evaluation, rehabilitation and design projects with unparalleled technical excellence. Our team members have demonstrated their ability to resolve complex issues and produce cost-effective planning as well as design documents for water storage facilities throughout California.

More specifically, each team member has an established record of successful accomplishments in the engineering discipline of his expertise. The structural engineers that will be assigned to your project are extremely well versed in the dynamic response of tank contents to seismic accelerations.

Determination of seismic forces caused by the dynamic response of water in a tank is a niche of structural engineering that is a specialty of the Tetra Tech team assigned to your project.

All of our engineering and design services will be performed by our own in-house staff of experts, as depicted on the Team Chart. This includes in- house structural, piping and appurtenances, site security, OSHA safety compliance, supported by our Geotechnical Engineering subconsultant, Leighton Consultant, Inc.

P

ROJECT TEAM ORGANIZATION AND KEY PERSONNEL RESPONSIBILITIES The successful execution of the field investigations and structural analysis for the Coyote 1C Reservoir involves many challenges. Experienced staff will be assigned to your project from start to finish, ensuring that valid information is developed, and sensitive issues are resolved. All phases of the project will require thoroughness and attention to detail to make certain that the project goes smoothly and the City gets first-class final deliverables. The same design team who had successfully completed the previous Lower Acacia Reservoir Rehabilitation Project for the City will be assigned to this Project.

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EXPERIENCE OF THE PROJECT MANAGER AND KEY STAFF MEMBERS Project Manager – Eric Yuen,
P.E.,S.E., MSCE – has over 15
years of experience in the design,
analysis and detailing in structural
engineering. He is knowledgeable
in reinforced concrete, masonry,
structural steel and wood frame
design, and construction for a
variety of building and
infrastructure projects including
reservoirs, water/wastewater
treatment facilities. Mr. Yuen has
been involved in the evaluation,
analysis and seismic retrofit of a
wide variety existing reservoirs.

Program Manager – Molly Mell,
P.E., ENV SP – has 30 years of
professional experience in
transportation, water, wastewater
engineering and construction
management. She has a diverse
base of knowledge of the elements
necessary to successfully execute
large-scale, multi-disciplinary
projects. She has had significant
roles providing management,
coordination, and detailed design
on a broad range of project types.

Her project management
experience includes both public
and private projects of varying size that include multiple sources of funding, including federal, state, and local transportation funding, Security Grant Funding, and private sources. Her management skills include project scheduling, cost estimating, building consensus, strong presentation skills, and innovative thinking. Ms. Mell has been a valuable asset in project execution for her clients.

QA/QC Manager - Victor Ramirez, P.E.,S.E. - has over 40 years of structural engineering design experience with special emphasis in the evaluation, rehabilitation and design of water storage/water containment structures. Mr. Ramirez’ experience have been tanks of various types, including conventionally reinforced and prestressed concrete, welded steel and bolted steel tanks. Mr. Ramirez’ experience also includes water/wastewater treatment plants, groundwater treatment facilities, booster pump stations, flow control facilities, pressure reducing stations and pipelines. His experience also includes the design of a wide variety of other types of structures, including buildings, bridges and storm drainage related structures. He is thoroughly knowledgeable in all types of construction, including reinforced concrete, masonry, structural steel, and timber.

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Lead Civil Engineer – Ken Berard, P.E. has over 35 years of extensive experience in many facets of water/waste
water engineering. Mr. Berard has performed numerous studies ranging from complete water master plans to
efficiency studies. His design experience includes preparing bid documents for sewers, reservoirs, pump stations, wells, pipelines, chlorination facilities, and pressure reducing facilities. Mr.

Berard also has exten
sive experience in hydraulic modeling. He has used and is familiar with more than six software
packages in addition to open channel flow software. Rounding out Mr. Berard's is his experience in inspection, construction administration, shop drawing review, and plan checking.

RE

SUMES OF THE PROJECT MANAGER AND KEY STAFF MEMBERS
Resumes for the Project Managers and Key Staff Members can be found in Appendix.

SUBCON

SULTANT
In addition to the Tetra Tech staff identified on our Team Chart, we have included Leighton Consulting, for Geotechnical Engineering for an optional service. Their proposal has been included in the Appendix.

ST

ATEMENT OF AVAILABILITY
Tetra Tech team will be available to begin working on the proposed project as soon as we get the Notice to Proceed, which the City
intends to issue in August 2022. Tetra Tech team is dedicated to stay on the schedule included in this proposal and provide all the submittals on time.

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PROJECT SCHEDULE: Section 5
The tentative project schedule is as outlined below. Tetra Tech will work with the City to refine the project schedule during the kick off meeting.

Proposals due to the City .................................................................................................. July 15, 2022 City select consultant ........................................................................................................ August 2022 Notice to Proceed (Assumed Date) .................................................................................. August 2022 Client Kick-Off Meeting .................................................................................................. August 2022 Review of Existing Documentation ................................................................................. August 2022 Structural Integrity Evaluation ......................................................................................... September 2022 Interior/Exterior Examination with Tank Filled .............................................................. October 2022 Drain and prepare reservoir for inspection ...................................................................... October 2022 Interior/Exterior Examination with Tank Empty ............................................................ October 2022 Submit Draft PDR to the City .......................................................................................... December 2022 Meeting with City to Review Draft PDR ........................................................................ January 2023 Submit Final PDR due to City ......................................................................................... February 2023

Section 6 16 TETRA TECH
PROJECT FEE: Section 6
Tetra Tech is pleased to submit our Price Proposal to provide inspection and engineering services for the Coyote Reser
voir 1C Tank Rehabilitation in accordance with the provisions contained in the RFP dated June 14. 2022.

The fee for our base services will be an amount not-to-exceed $45,220. The fee including our optional, geotechnical engineering and “tank empty” field investigation services is $97,280. These fees include all
direct, indirect costs including all labor, employee benefits, equipment, materials, insurances, and reproduction costs. Charges for our services, as defined in our scope of services, and for any additional services, authorized in writing, will be based upon our 2022 Hourly Charge Rate and Expense Reimburse
ment Schedule, Exhibit “A”. These fees will remain in effect for sixty days from the date of our proposal after which they will be subject to re-evaluation.

Price Summary / Totals
Task Pricing Totals 45,220
Specify Add'l Fees on Setup 0
Technology Use Fee
Proj Area > Struct Struct Struct Struct Struct Civil Civil 45,220 Submitted to: City of Fullerton (Attn: Gar Huang)
Contract Type: T&M
Project Phases / Tasks 261 13 69 101 21 15 14 28 0.00% 44,450 - 110 660 - 45,220 1 2 3 5 6 8 9
Phase I - Preliminary Engineering 261 13 69 101 21 15 14 28 44,450 - 110 660 - 45,220 Task 1 - Kick-Off Meeting 17 3 6 3 1 4 - - 3,015 - - - - 3,015 Draft Meeting Agenda 3 1 1 1 570 570
Meeting 4 1 1 1 1 705 705
Prepare Meeting Minutes 3 1 1 1 450 450
Update Project Schedule 2 2 430 430
Internal Team Design Kick-off Meeting 5 1 1 1 1 1 860 860 Task 2 - Review of Existing Documentation 14 - 3 5 - - 2 4 2,450 - - - - 2,450 Gather Existing Documentations 2 1 1 350 350
Review Existing Documentaions 6 1 2 1 2 1,050 1,050
Data Research 6 1 2 1 2 1,050 1,050
Task 3 - Site Reconnaissance 44 3 13 14 12 2 - - 7,510 - 110 660 - 8,280 Health & Safety Plan Preparation 6 2 2 2 940 940
Visual Examinations 38 3 11 14 10 - - - 6,570 - 110 660 - 7,340 Tank Filled 38 3 11 14 10 - - - 6,570 - 110 660 - 7,340 Site Visit 26 8 8 10 4,350 110 660 5,120
Site Reconnaissance Report 12 3 3 6 2,220 2,220
Tank Empty (ADDITIONAL SCOPE ITEM) - - - - - - - - - - - - - - Site Visit - -
Site Reconnaissance Report - -
Task 4 - Structural Integrity Evaluation and Safety Review 71 2 25 44 - - - - 11,825 - - - - 11,825 Prepare Calcs and Data 2 1 1 350 350
Structural Element Evaluation 39 - 12 27 - - - - 6,225 - - - - 6,225 Roof (Gravity and Seismic) 8 2 6 1,240 1,240
Roof to wall Connection 5 1 4 755 755
Wall 6 2 4 970 970
Inner Wall 6 2 4 970 970
Column/Column Footing 3 1 2 485 485
Wall to Footing Connection 3 1 2 485 485
Wall Footing 3 1 2 485 485
Freeboard Clearance 2 1 1 350 350
Overall Stability 3 1 2 485 485
Determine Req'd Structural Upgrade/Retrofit 15 1 6 8 2,625 2,625 Recommed Repairs and Strengthening 15 1 6 8 2,625 2,625 Field Exploration and Geotechnical Recommendations (ADDITIONAL SCOPE ITEM) - - Task 5 - Preliminary Design Report (PDR) Preparation 115 5 22 35 8 9 12 24 19,650 - - - - 19,650 Draft Report Preparation 94 - 15 28 8 7 12 24 15,725 - - - - 15,725 Introduction 5 2 2 1 800 800
Executive Summary 6 3 2 1 1,015 1,015
Site Reconnaissance Findings 14 1 4 1 4 4 2,495 2,495
Reservoir Mechanical Aspect Discussion 16 4 12 2,880 2,880 Seismic/Structural Evaluations 9 2 6 1 1,340 1,340
Identify/Discuss Repair & Retrofit Alternatives 29 2 6 8 1 4 8 4,840 4,840 D/C Matrix 5 2 2 1 800 800
Opinion of Probable Cost 8 2 6 1,240 1,240
Submit Draft Report 2 1 1 315 315
Internal QA/QC 8 4 2 2 1,720 1,720
Meet with City to Discuss Draft PDR Review Comments 3 1 1 1 605 605 Final Report Preparation 10 - 4 4 - 2 - - 1,600 - - - - 1,600 Update Draft Engineering Report/Exhibits 10 4 4 2 1,600 1,600 Task 6 - Environmental Documentation (IF NEEDED) - -
Phase II - Plans, Specifications, and Estimates (PS&E) - - - - - - - - - - - - - - Not included in this proposal - -
Phase III - Construction Support - - - - - - - - - - - - - - Not included in this proposal - -
Totals 261 13 69 101 21 15 14 28 0.00% 44,450 - 110 660 - 45,220 Task Pricing
Totals
Total
Labor Hrs Subs Travel Mat'ls & Equip ODCs
Labor
Rate Esc. Labor
Civil Project Engineer
(Adrian Lee)
Structural Designer
(Jose Quiroz)
CADD/Safety (Eric
Hutchins)
Structural Admin
(Tammy Huang)
Civil Project Manager
(Ken Berard)
Engineering Services for rehabilitation of a potable water tank Total Price Pricing by Resource
QA-QC Manager (Victor
Ramirez)
Project Manager (Eric
Yuen)
7 Resource
Coyote 1C Tank Rehabilitation
Price Proposal
Labor Plan
Tetra Tech - Confidential and Proprietary 17 Printed 7/29/2022 Price Summary / Totals
Task Pricing Totals 97,280
Bill Rate > 255.00 215.00 135.00 155.00 100.00 255.00 155.00 Specify Add'l Fees on Setup 0 Technology Use Fee
Proj Area > Struct Struct Struct Struct Struct Civil Civil 97,280 Submitted to: City of Fullerton (Attn: Gar Huang)
Contract Type: T&M
Project Phases / Tasks 313 16 84 117 31 15 14 36 0.00% 53,390 42,350 220 1,320 - 97,280 1 2 3 5 6 8 9
Phase I - Preliminary Engineering 313 16 84 117 31 15 14 36 53,390 42,350 220 1,320 - 97,280 Task 1 - Kick-Off Meeting 17 3 6 3 1 4 - - 3,015 - - - - 3,015 Draft Meeting Agenda 3 1 1 1 570 570
Meeting 4 1 1 1 1 705 705
Prepare Meeting Minutes 3 1 1 1 450 450
Update Project Schedule 2 2 430 430
Internal Team Design Kick-off Meeting 5 1 1 1 1 1 860 860 Task 2 - Review of Existing Documentation 20 - 7 7 - - 2 4 3,580 42,350 - - - 45,930 Gather Existing Documentations 2 1 1 350 350
Review Existing Documentaions 6 1 2 1 2 1,050 1,050
Data Research 6 1 2 1 2 1,050 1,050
Field Exploration and Geotechnical Recommendations (ADDITIONAL SCOPE ITEM) 6 - 4 2 - - - - 1,130 42,350 - - - 43,480 Geotechnical Exploration 6 4 2 1,130 28,006 29,136
Private Utility Locator - 1,089 1,089
Drone Survey Geologic Review - 5,665 5,665
Field (In-Situ) Soil Resistivity Testing - 1,045 1,045
Site-Specific Seismic and Triparite Response Spectra - 6,545 6,545 Task 3 - Site Reconnaissance 90 6 24 28 22 2 - 8 15,320 - 220 1,320 - 16,860 Health & Safety Plan Preparation 6 2 2 2 940 940
Visual Examinations 84 6 22 28 20 - - 8 14,380 - 220 1,320 - 15,920 Tank Filled 38 3 11 14 10 - - - 6,570 - 110 660 - 7,340 Site Visit 26 8 8 10 4,350 110 660 5,120
Site Reconnaissance Report 12 3 3 6 2,220 2,220
Tank Empty (ADDITIONAL SCOPE ITEM) 46 3 11 14 10 - - 8 7,810 - 110 660 - 8,580 Site Visit 34 8 8 10 8 5,590 110 660 6,360
Site Reconnaissance Report 12 3 3 6 2,220 2,220
Task 4 - Structural Integrity Evaluation and Safety Review 71 2 25 44 - - - - 11,825 - - - - 11,825 Prepare Calcs and Data 2 1 1 350 350
Structural Element Evaluation 39 - 12 27 - - - - 6,225 - - - - 6,225 Roof (Gravity and Seismic) 8 2 6 1,240 1,240
Roof to wall Connection 5 1 4 755 755
Wall 6 2 4 970 970
Inner Wall 6 2 4 970 970
Column/Column Footing 3 1 2 485 485
Wall to Footing Connection 3 1 2 485 485
Wall Footing 3 1 2 485 485
Freeboard Clearance 2 1 1 350 350
Overall Stability 3 1 2 485 485
Determine Req'd Structural Upgrade/Retrofit 15 1 6 8 2,625 2,625 Recommed Repairs and Strengthening 15 1 6 8 2,625 2,625 Task 5 - Preliminary Design Report (PDR) Preparation 115 5 22 35 8 9 12 24 19,650 - - - - 19,650 Draft Report Preparation 94 - 15 28 8 7 12 24 15,725 - - - - 15,725 Introduction 5 2 2 1 800 800
Executive Summary 6 3 2 1 1,015 1,015
Site Reconnaissance Findings 14 1 4 1 4 4 2,495 2,495
Reservoir Mechanical Aspect Discussion 16 4 12 2,880 2,880 Seismic/Structural Evaluations 9 2 6 1 1,340 1,340
Identify/Discuss Repair & Retrofit Alternatives 29 2 6 8 1 4 8 4,840 4,840 D/C Matrix 5 2 2 1 800 800
Opinion of Probable Cost 8 2 6 1,240 1,240
Submit Draft Report 2 1 1 315 315
Internal QA/QC 8 4 2 2 1,720 1,720
Meet with City to Discuss Draft PDR Review Comments 3 1 1 1 605 605 Final Report Preparation 10 - 4 4 - 2 - - 1,600 - - - - 1,600 Update Draft Engineering Report/Exhibits 10 4 4 2 1,600 1,600 Task 6 - Environmental Documentation (IF NEEDED) - -
Phase II - Plans, Specifications, and Estimates (PS&E) - - - - - - - - - - - - - - Not included in this proposal - -
Phase III - Construction Support - - - - - - - - - - - - - - Not included in this proposal - -
Totals 313 16 84 117 31 15 14 36 0.00% 53,390 42,350 220 1,320 - 97,280 Task Pricing
Totals
Total
Labor Hrs Subs Travel Mat'ls & Equip ODCs
Labor
Rate Esc. Labor
Civil Project Engineer
(Adrian Lee)
Structural Designer
(Jose Quiroz)
CADD/Safety (Eric
Hutchins)
Structural Admin
(Tammy Huang)
Civil Project Manager
(Ken Berard)
Engineering Services for rehabilitation of a potable water tank Total Price Pricing by Resource
QA-QC Manager (Victor
Ramirez)
Project Manager (Eric
Yuen)
7 Resource
Coyote 1C Tank Rehabilitation
(Including Optional Scopes)
Price Proposal
Labor Plan
Tetra Tech - Confidential and Proprietary 18 Printed 7/29/2022 Section 7 19 TETRA TECH
EXPERIENCE: Section 7
PROJECTS SIMILAR IN NATURE PERFORMED WITHIN THE LAST 5 YEARS PROJECTS MOST SIMILAR IN NATURE PERFORMED WITHIN THE LAST 5 YEARS Client Contact/Project Project Type of Reservoir
City of Fullerton Structural Rehabilitation of the
Lower Acacia Reservoir (1-D) 4 MG, buried rectangular hopper bottom City of Riverside
Condition Assessment and
Seismic Evaluation of 8
Reservoirs
Conventionally reinforced concrete
Lincoln Avenue
Water Company North Glenrose Reservoir

1.8 MG concrete below grade, hopper bottom concrete
reservoir with steel columns, wood framed gable walls,
wood roof framing and corrugated galvanized steel roof
decking
Golden State Water Company Hunting Horn Reservoir . 44 MG, Semi-buried reinforced concrete cylindrical Monte Vista Water District Seismic and Structural
Assessment of Reservoir 16
3 MG partially buried conventionally reinforced
rectangular reservoir
City of Glendora Sierra Madre Reservoir
Rehabilitation
4 MG, prestressed circular concrete wall shell, concrete columns and a concrete roof
The above projects were completed within budget and within the projected schedule. Details of these projects can be found on the following pages.

Structural Rehabilitation of the
Lower Acacia Reservoir (1-D)
Project Profil
e water\1-fullerton-loweracacia.docx

PROJECT

DESCRIPTION
Tetra Tech performed a condition assessment, site investigation, and structural/seismic evaluations of the Lower Acacia Reservoir (1-D). The City of Fullerton owns and operates this 4 million gallon reservoir, as part of its potable water system. The structure is a predominately buried rectangular hopper bottom tank constructed in 1964 and is located at 1500 N. Acacia Avenue, in the City of Fullerton. The floor and sloping sides of the hopper bottom consist of a slab-on-grade with wire mesh. The reservoir roof deck is made of precast concrete double-tee panels that are supported by prestressed concrete girders. The girders are supported by cast-in-place concrete columns. The City’s main concern was a water leakage problem. The primary purpose of the evaluation is to evaluate and provide options to repair the water leakage issue and evaluate the structural integrity of the reservoir per the current code standards. In addition, provide evaluation of additional concerns including safety components, reservoir appurtenances, valves and under drain system, and the slope stability of the ascending slope along the perimeter of the property. At the request of, and under the direction of the City, two visual inspections and an ACI 350.1 leak test were performed by Tetra Tech, and a geotechnical field exploration which was performed by Leighton Consulting.

Tetra Tech worked with the City to generate a list of recommendations that will remedy the leakage problems and improve the durability of the reservoir. Tetra Tech then produced bid ready documents for the implementation of the recommended retrofits. We assisted the City during the bid phase of the project and we are currently providing construction phase services (shop drawing reviews, responses to RFIs, field observations, etc.).

CLIENT
City of Fullerton
303 W. Commonwealth
Fullerton, CA 92832

LOCATION
Fullerton, California

DURATION
June 2017 –
May 2019
COST
$160,700 (Design Fee)
$ 1,291,341 (Construction)

PROJECT TEAM
Eric Yuen, P.E., S.E.

Structural Engineer
Victor Ramirez, P.E., S.E.

QA/QC Structural Engineer
Jose Quiroz, P.E.

Design Engineer

REFERENCES
Ms. Tiffany Foo, Associate
Water Engineer
Phone: 714-738-6321
[email protected]

Condition Assessment and Seismic Evaluation
of 8 Riverside Reservoirs
Project Profile water\2-riverside-8.doc
CLIENT
City of Riverside
Public Utilities / Water
Department
3750 University Ave.
3rd Floor
Riverside, CA 92501

LOCATION
Riverside, California

DURATION
2019 – 2022
COST
$220,000 (Design Fee)

PROJECT TEAM
Eric Yuen, P.E., S.E.

Project Manager
Victor Ramirez, P.E., S.E.

QA/QC Manager
Jose Quiroz, P.E.

Design Engineer
Ken Berard, P.E.

Civil Manager
Adrian Lee, P.E.

Design Engineer

REFERENCES
Mr. John Farley
Principal Engineer
951-826-5705
Mr. Taylor Wilson, P.E.

Associate Engineer
951-826-5434

PROJECT

DESCRIPTION
The City of Riverside contracted with Tetra Tech to provide Engineering Evaluation and Inspection Services to perform a baseline condition assessment and seismic evaluation for two pre-stressed concrete and six conventionally reinforced concrete water storage reservoirs:

Name Height Dimensions Capacity (MG) Const.

Date
Alessandro 20’ 130’ x 20’ 2.0 1961
Sugarloaf 33’ 160’ x 33’ 5.0 1962
Emtman 20’ 208’ x 156’ 5.0 1970
University Heights 18’ 316’ x 172’ 5.0 1936
Ross (circular) 26’ 116’ (diameter) 5.0 1977
Piedmont (circular) 24’ 84’ (diameter) 1.0 1981
Campbell 29’ 136’ x 196’ 4.9 1981
Heustis (circular) 26’ 116.5’ (diameter) 2.0 1981
Alessandro a
nd Sugarloaf are designed and constructed in a manner consistent with the AWWA D110 standards for Type I tanks. As such, the tanks have circumferential prestressing wrapped around the exterior of their concrete core walls and internal vertical prestressing tendons. The circumferential prestressing is intended to resist hydrostatic and hydrodynamic seismic forces in hoop tension. When properly designed the circumferential prestressing will provide a residual compressive stress in the concrete core wall, even when all applicable static and dynamic loads are applied. The vertical prestressing tendons are intended to provide a residual compressive stress in the vertical direction. This

Condition Assessment and Seismic Evaluation
of 8 Riverside Reservoirs

Project Profile water\2-riverside-8.doc
bi-lateral compressive stress is effective in controlling cracking in the core wall. The wall-to-foundation and wall-to-roof joints are typically restrained/flexible joints that allow small amounts of movement in the radial direction and can resist lateral seismic loading in the tangential directions. Field visual examinations were performed for each reservoir when the reservoirs are empty.

The Emtman, University Heights, Ross, and Heustis reservoirs are conventionally reinforced concrete reservoirs completely buried below grade. Piedmont and Campbell reservoirs are conventionally reinforced concrete partially buried. They all have a concrete flat roof system supported by concrete columns. Field visual examinations were performed for each reservoir when the reservoirs are full (floating with kayak) and empty. There were total of 12 field visits, and they all happened within six weeks to help minimize the impact to the City’s operations.

The baseline condition assessment and seismic evaluation reports were prepared by Tetra Tech which included the findings from the field examination and structural analysis, recommendations and budgetary estimates for tank retrofit and/or repair options, and a “Hazard Categorization & Prioritization Matrix”. This report serves as a tool to help the City to prioritize the necessary rehabilitations when funding becomes available.

North Glenrose Reservoir
Roof and Support Column Replacement
Project Profil
e

PROJECT

DESCRIPTION
Tetra Tech provided Lincoln Avenue Water Company (LAWC) engineering services for Design, Plan Specifications and assistance with Construction Administration for the North Glenrose Reservoir Support Column and Roof Rehabilitation Project. The Glenrose reservoir is a 1.8 million gallon concrete, potable storage below grade structure with an area of approximately 19,500 square feet. It is a hopper bottom concrete reservoir with steel columns, wood framed gable walls, wood roof framing and corrugated galvanized steel roof decking. The staff at LAWC has noted some deterioration of the wood framing.

The Tetra Tech team preformed an on-site structural condition assessment and evaluated the extent of the deterioration of the roof framing and corrosion damage to the columns and prepared a preliminary design report to convey the findings and recommendations to LAWC. The client elected to replace the roof structure with a cast- in-place concrete flat roof after reviewing the PDR with Tetra Tech. Tetra Tech designed and prepared bid ready drawings and specifications for the concrete roof replacements. The new concrete roof is supported by new concrete columns, perimeter stem walls and stem wall footings. The new roof is designed to supprort the installation of solar panel arrays as requested by the client.

CLIENT
Lincoln Avenue Water
Company

LOCATION
Altadena, California

DURATION
April 2019 –
December 2019
COST
$84,331 (Design Fee)

PROJECT TEAM
Victor Ramirez, P.E., S.E.

Project Manager
Eric Yuen, P.E., S.E.

Structural Engineer
Jose Quiroz, P.E.

Design Engineer
Mark Nayra, P.E.

Design Engineer
Geoff Heinen, P.E.

Design Engineer

REFERENCES
Ms. Jennifer Betancourt
Torres, General Manager
626-798-9101, ext. 213
[email protected]

Hunting Horn Reservoir
Seismic Evaluation
Project Profil
e

PROJECT

DESCRIPTION
Tetra Tech provided engineering/technical services including onsite reconnaissance inside the reservoir to prepare a structural and seismic study and evaluation. The Hunting Horn Reservoir is a semi-buried reinforced concrete cylindrical water tank that was first constructed in 1900, converted to concrete in 1918, and gunite-lined in 1950. The reservoir has a capacity of 0.44 MG, measures approximately 72 feet in diameter and 16 feet high and has a wood frame roof. Over the years it has developed cracks in the interior shell that have been patched and has a slow leak that is visible from the exterior and requires assessment and repair. Tetra Tech prepared a comprehensive engineering study and seismic evaluation of the tank to examine the alternatives available to GSWC for either repair or replacement. GSWC decided to replace the reservoir after the preliminary study. Tetra Tech then help GSWC to prepare the PS&E for the reservoir replacement at the same site. Tetra Tech will also proivde construction phase support for the project.

CLIENT
Golden State Water
Company

LOCATION
North Tustin, California

DURATION
March 2019
COST
$300,000

PROJECT TEAM
Eric Yuen, P.E., S.E
Project Manager
Victor Ramirez, P.E., S.E.

QA/QC Manager
Geoff Heinen, P.E.

Design Engineer

REFERENCES
Theresa Wu, P.E.

Phone: 714.535.7711
[email protected]
Reservoir 16 Rehabilitation
Structural and Seismic Assessment
Project Profile
CLIENT
Monte Vista Water District
10575 Central Ave.

PO Box 71
Montclair, CA 91763

LOCATION
Montclair, California

DURATION
2021
COST
$70,000 (Design Fee)

PROJECT TEAM
Eric Yuen, P.E., S.E.

Project Manager
Victor Ramirez, P.E., S.E.

QA/QC Manager
Geoff Heinen, P.E.

Design Engineer

REFERENCES
Mr. John Hughes P.E.

Water Systems
Superintendent
909-267-2185

PROJECT DESCRIPTION
The Monte Vista Water District (District) retained the services of Tetra Tech to conduct condition assessments and seis mic evaluations of their Reservoir No. 16. This Reservoir is a 3.0 million gallon partially buried conventionally reinforced rectangular reservoir construc ted in 1978. It has inside dimensions of 180-feet by 140-feet and a wall heigh t of 18-feet. The depth of the below- grade portion is about 16 feet around the re servoir. It has a concrete flat roof system supported by concrete columns. The top of the roof was used as tennis courts at one point, but now the tennis courts were abandoned.

Field visual examinations were performed for each reservoir when the reservoirs are full and water level at 4ft (both floating with kayak). Typically, the second visual examination is pref ormed when the reservoir is empty; however, due to the District’s operation constraints, they cannot take this reservoir out of service for an extended period. The second site visit was performed with the water level as close to the bottom floor as possible. The baseline condition assessment and seismic evaluation report was prepared by Tetra Tech which included the findings fr om the field examination, review of previous dive inspection reports and structural analysis, recommendations and budgetary estimates for tank retrofit and/or repair options, and a “Hazard Categorization & Prioritization Matrix”.

Because the original soil reports and geotechnical par ameters were not available for our analysis, we have a geotechnical sub-consultant, Leighton Consulting, Inc, onboard to help providing those missing soil design parameters for this project. An on-si te geotechnical exploration and investigation and laboratory testing were performed by Leighton to determine the allowable soil bearing pressure, soil lateral pressures and settlement criteria. For this ge otechnical exploration, two boring holes were drilled near the northern and eastern sides of the reservoir.

Sierra Madre Reservoir
Rehabilitation
Project Profil
e

PROJECT

DESCRIPTION
Tetra Tech performed a seismic evaluation of an existing 4 MG potable water storage tank. This concrete structure was originally constructed in 1964-65.

The tank structure consists of a prestressed circular concrete wall shell, concrete columns and a concrete roof. The purpose of the evaluation was to determine the improvements needed in order for the reservoir to meet current Code (AWWA D110-13) seismic design, and to determine the extent of the sagging and cracking at the existing roof deck. Safety and reservoir appurtenances were evaluated for OSHA compliance (ladders and hatches) and security (hatches and vents). Conceptual designs and costs for the recommended improvements were provided in a preliminary design report.

CLIENT
City of Glendora

LOCATION
Glendora, California

DURATION
February 2015 –
August 2018
COST
$1,900,000

PROJECT TEAM
Victor Ramirez, P.E., S.E.

Structural Design Manager
Eric Yuen, P.E., S.E.

Structural Engineer
Mike Olsen, P.E.

Design Engineer

REFERENCES
City of Glendora
116 East Foothill Blvd.

Glendora, CA 91741
Ms. Alison Sweet Interim
Public Works Director/City
Engineer
626-914-8246

APPENDIX

RESUMES
Man Hong (Eric) Yuen, PE, SE
Project Manager
Yuen, Page 1
Mr. Yuen has more than 15 years of experience in the design, analysis, and detailing of structure with special emphasis in the design of water storage/water containment and water conveyance related structures, including reservoirs, water/wastewater treatment plants, booster pump stations, flow control facilities, pressure reducing stations and pipelines. He is knowledgeable in all types of construction including reinforced concrete, masonry, structural steel and wood frame design. He also has extensive experience with seismic evaluation, assessment, strengthening, retrofit and replacement of existing structures.

EXPERIENCE
Lower Acacia Reservoir (1-D) Structural Rehabilitation, City of Fullerton, CA. 2017-2019. Project Manager responsible for the inspection and engineering services, structural rehabilitation from the design phase through the bid phase and construction support services for the improvements to the Lower Acacia Reservoir, a 4MG rectangular concrete tank predominately buried constructed in 1964.

Seismic Resiliency of 8 Reservoirs, Montecito Water District, Montecito, CA 2021- Present – Structural Project Engineer assisting with the design analysis and final design documents for the retrofits of four concrete reservoirs including Bella Vista reservoir, Cold Spring reservoir, Hot Springs reservoir, Buena Vista reservoir. Tetra Tech prepared Structural and Seismic Evaluation Report for ten of the District Storage Reservoirs back in September 2015, and the District selected Tetra Tech to prepare the final design document for the retrofit and provide construction support for eight of their reservoirs. The retrofit methods include reinforced concrete wall and footing overlay strengthening, steel roof seismic strengthening, roof to wall seismic connection strengthening, roof system replacement, and complete reservoir replacement.

Condition Assessment and Seismic Evaluation of Reservoir 16, Monte Vista Water District, CA, 2021 Project Manager responsible to assist the Monte Vista Water District to perform structural and seismic assessment for Reservoir 16 and prepare the Preliminary Design Report (PDR) to summarize the findings and provide recommendations. Reservoir 16 is a 3.0 million gallon partially buried conventionally reinforced rectangular reservoir constructed in 1978. It has inside dimensions of 180-feet by 140-feet and a wall height of approximately 18-feet. The depth of the below-grade portion varies from 16 feet to 17 feet around the reservoir.

Tetra Tech utilized inflatable kayaks to perform the onsite reconnaissance and assessment inside the reservoir.

Condition Assessment and Seismic Evaluation of Six Concrete Water Storage Reservoirs, City of Riverside, CA, 2021-Present Project Manager responsible to perform a baseline condition assessment and seismic evaluation for three existing reservoirs: Emtman (5MG, 1960s), University Heights (5MG 1930s), Ross Reservoirs (2MG, 1970s), Campbell Reservoir (4.9MG, 1970s), Heustis Reservoir (2MC, 1970s), and Piedmont Reservoir (1MG, 1970s) and prepare the Preliminary Design Report (PDR) to summarize the findings and provide recommendations, budgetary estimates for tank retrofit and/or repair options a “Hazard Categorization & Prioritization Matrix” to help the City to prioritize the necessary rehabilitations when funding becomes available. These three reservoirs are completely buried conventional reinforced concrete reservoirs (two rectangular and one circular). All three reservoirs have a concrete flat roof system supported by concrete columns.

Condition Assessment and Seismic Evaluation of the Walnut Reservoir, City of Santa Ana, CA, 2021-Present – Project Manager responsible to perform structural and seismic assessment for Walnut Reservoir and prepare the Preliminary Design Report (PDR) to summarize the findings and provide recommendations. Walnut Reservoir is a 7.0 million gallon completely buried conventionally reinforced rectangular reservoir constructed in 1956. It has inside dimensions of 242-feet by 202-feet and a wall height of approximately 16-feet. There is a 10-feet tall divider wall at the center of the reservoir. This reservoir is located under public tennis courts. Tetra Tech provide a certified on-site recure crew from a subconsultant for the reservoir entry for this on-site assessment.

Clearview Reservoir Assessment, Golden State Water Company, Santa Ana, CA. 2019. Project Manager responsible for the overall project for the visual assessment and seismic evaluation for the two partially buried concrete reservoirs (one rectangular and one circular) at the Clearview site located at 1501 Clearview Ln. Santa Ana. The circular reservoir has a capacity of 124,000 gallons and the rectangular reservoir has a capacity of 84,000 gallons. Not destructive Ground Education:

M.S., Civil and Structural
Engineering, California State
Polytechnic University, Pomona
2016
BS, Civil Engineering, California
State Polytechnic University,
2007
Registrations/Certifications:

Professional Engineer:

California, No. 75983, 2009
Montana, No.63246, 2020
Colorado, No. 56159, 2019
Prof. Structural Engineer:

California, No. 6177, 2014
Oregon, No. 94532, 2019
Cal OES Safety Assessment
Program Evaluator Training
Confined Space Entry
Professional Affiliations:

American Institute of Steel
Construction
Office Location:

San Dimas, CA
Total Years of Experience:
(2007) 15
Years with Tetra Tech:
(03/2007) 15

Man Hong (Eric) Yuen, PE, SE
Project Manager

Yuen, Page 2
Penetration Radar (GPR) was preformed during the onsite assessment to location the existing wall and roof slab reinforcement for the circular reservoir.

Condition Assessment and Seismic Evaluation of Alessandro and Sugarloaf Reservoir, City of Riverside, CA. 2019- 2020. Project Manager responsible for the engineering evaluation and inspection services to perform a baseline condition assessment and seismic evaluation for two existing pre-stressed circular concrete reservoirs: Alessandro Reservoir, 2.0 MGD, 130 by 20 feet, constructed in 1961 and Sugarloaf Reservoir, 5.0 MGD, 160 by 33 feet, constructed in 1962.

Hunting Horn Reservoir Structural/Seismic Evaluation, Golden State Water Company (GSWC), City of North Tustin, CA. 2019. Project Manager responsible for the overall project to provide professional engineering/technical services including onsite reconnaissance inside the reservoir to prepare a structural and seismic study and evaluation. The Hunting Horn Reservoir is a semi-buried reinforced concrete cylindrical water tank that was first constructed in 1900, converted to concrete in 1918, and gunite-lined in 1950. The reservoir has a capacity of 0.44 MG, measures approximately 72 feet in diameter and 16 feet high and has a wood frame roof. Over the years it has developed cracks in the interior shell that have been patched. It also has a slow leak that is visible from the exterior and requires assessment and repair. Tetra Tech prepared a comprehensive engineering study and seismic evaluation of the tank to examine the alternatives available to GSWC for either repair or replacement.

Plant 128 Seismic Evaluation & Retrofit Analysis, Suburban Water Systems, La Puente, CA 2018 - As Structural Project Lead, Mr. Yuen is responsible for the overall project for the visual assessment and seismic evaluation for Plant 128 Reservoir which is an aging concrete reservoir originally constructed as an open-air agriculture irrigation reservoir.

J.B Latham Wastewater Treatment Plant Digester 4 Rehabilitation Project, South Orange County Water Authority (SOCWA), Dana Point, CA. 2017. Structural Project Manager responsible for the final design documents for the retrofits of the circular concrete digester tank.

Sierra Madre Reservoir Rehabilitation, Glendora, CA. 2016. Structural Design Engineer responsible for the preparation of a seismic evaluation of an existing 4.0 MG potable water storage tank. This concrete structure was originally constructed in 1964-65. The tank structure consists of a prestressed circular concrete wall shell, concrete columns and a concrete roof.

The purpose of the evaluation was to determine the improvements needed for the reservoir to meet current Code (AWWA D110-13) seismic design, and to determine the extent of the sagging and cracking at the existing roof deck. Safety and reservoir appurtenances were evaluated for OSHA compliance (ladders and hatches). Conceptual designs and costs for the recommended improvements were provided in a preliminary design report.

Structural and Seismic Evaluation Storage Reservoirs, Montecito Water District, Montecito, CA. 2015. Structural Engineer for professional engineering services to conduct condition assessments, inspections, investigations, perform testing, and provide structural and seismic analysis of nine District water storage reservoirs with a combined volume of

11.5 million gallons at full capacity. The nine reservoirs include five rectangular predominately buried concrete, three circular above ground concrete, and one circular above ground steel reservoir. Deficiencies identified were presented with prioritized alternatives for repair(s), retrofit, or replacement to ensure these facilities continue to operate and provide water following a seismic event. The District provides potable water to about 4,360 customer accounts that use approximately 5.5 million gallons of water per day.

3.1 MG Reservoir Seismic Vulnerability Evaluation Report and Strengthening, City of El Segundo, CA. 2010.

Structural Design Engineer provided the on-site assessment, structural evaluation, preliminary design report in the evaluation phase, seismic strengthening design of the reservoir in the design phase and structural observations in the construction phase. Tetra Tech prepared preliminary and final design construction plans, specifications, and cost estimates for the seismic retrofit of an existing 3.1 MG concrete potable water storage tank, originally constructed in 1948. The seismic strengthening included the addition of reinforcing steel and shotcrete to the exterior walls, plywood roof sheathing, and structural steel shear transfer frames around the tank perimeter between the roof and the wall shell. Safety upgrades included the design of new roof mounted guard railings. Tetra Tech's construction phase services included structural observations, special inspection by a deputy inspector, and material testing.

Seismic Evaluation of Ten Water Storage Reservoirs, City of Ontario, CA. 2009. Desi gn Engineer for the evaluation of
four out of six buried flat bottom rectangular concrete reservoirs. Tetra Tech performed seismic and safety evaluations on ten of the City’s twelve water storage reservoirs. The evaluations determined improvements necessary for each reservoir to meet current seismic design standards and OSHA requirements, as well as the estimated cost of the improvements (engineering design, construction inspection, and construction). The ten reservoirs included six buried flat bottom rectangular concrete reservoirs, two above grade flat bottom circular reservoirs (one concrete and one steel), and two hopper bottom reservoirs with wood framed roofs.

Victor Ramirez, PE, SE
Structural Engineer / Project Manager
Ramirez, Page 1
Mr. Ramirez has over 40 years of structural engineering design experience with special emphasis in the design of water storage/water containment and water conveyance related structures, including reservoirs, water/wastewater treatment plants, booster pump stations, flow control facilities, pressure reducing stations and pipelines.

His experience also includes the design of a wide variety of other types of structures, including buildings, bridges and storm drainage related structures. He is thoroughly knowledgeable in all types of construction, including reinforced concrete, masonry, structural steel, and timber.

EXPERIENCE
Lower Acacia Reservoir (1-D) Structural Rehabilitation, Design Phase Services and Construction Management, City of Fullerton, CA. 2017-2019. QA/QC Manager. QA/QC Manager responsible for the review of Design Phase, Bid Phase and Construction Support Services for the improvements to the Lower Acacia Reservoir, a

4.0 MG rectangular concrete tank predominately buried constructed in 1964.

Condition Assessment and Seismic Evaluation of Alessandro and Sugarloaf Reservoir, City of Riverside, CA. 2019. Senior Project Manager responsible for the engineering evaluation and inspection services to perform a baseline condition assessment and seismic evaluation for two existing pre-stressed concrete reservoirs:

Alessandro Reservoir, 2.0 MGD, 130 by 20 feet, constructed in 1961 and Sugarloaf Reservoir, 5.0 MGD, 160 by 33 feet, constructed in 1962.

Hunting Horn Reservoir Evaluation, Golden State Water Company, North Tustin, CA. 2019. QA/QC Manager. QA/QC Manager for the structural and seismic evaluation and study of Hunting Horn Reservoir, a partially buried, cylindrical, reinforced concrete tank with a wood framed roof. The tank has a capacity of 0.44 MG and is about 72 feet in diameter by 16 feet deep. It has a flat concrete floor, concrete masonry walls, and a wood framed roof.

North Glenrose Reservoir Rehabilitation, Lincoln Avenue Water Company, Alta Dena, CA. 2019. Project Manager. Project Manager responsible for the design, drawings, specifications, and assistance with construction administration for replacement of the existing reservoir roof with a new concrete roof deck supported by new concrete columns and stem walls. The Glenrose reservoir is a 1.8-million-gallon concrete, potable storage below grade structure with an area of approximately 19,500 square feet. It is a hopper bottom concrete reservoir with steel columns, wood framed gable walls, wood roof framing, and corrugated galvanized steel roof decking.

Montecito Water District: Seismic Resiliency of 8 Reservoirs, 2021 – Structural Project Engineering assisting with the Final Design documents for Bella Vista, Cold Spring, Hot Springs, Buena Vista, Doulton , Romero, Terminal and Park Lane. Tetra Tech prepared Structural and Seismic Evaluation of District Storage Reservoirs dated 9/2015 and used that report to prepare final design documents.

Sierra Madre Reservoir Rehabilitation, Glendora, CA. 2016. Structural Engineer. Responsible for the preparation of a seismic evaluation of an existing 4.0 MG potable water storage tank. This concrete structure was originally constructed in 1964-65. The tank structure consists of a prestressed circular concrete wall shell, concrete columns and a concrete roof. The purpose of the evaluation was to determine the improvements needed for the reservoir to meet current Code (AWWA D110-13) seismic design, and to determine the extent of the sagging and cracking at the existing roof deck. Safety and reservoir appurtenances were evaluated for OSHA compliance (ladders and hatches) and security (hatches and vents).

Conceptual designs and costs for the recommended improvements were provided in a preliminary design report.

Structural and Seismic Evaluation Storage Reservoirs, Montecito Water District, Montecito, CA. 2015. Structural Engineer and Team Lead. Structural Engineer and Team Lead for professional engineering services to conduct condition Education:

BS, Civil Engineering, California
State University,
Los Angeles, 1995
Registrations/Certifications:

Registered Structural Engineer,
California, No. 4720, 2004
Nevada, No. 24180, 2016
Texas, No. 127770, 2017
Oregon No. 94219PE, 2018
Colorado, No. 55661, 2019
Registered Civil Engineer
California, No. 56863, 1997
Washington, No. 54086, 2016
Professional Affiliations:

Structural Engineers Association
of Southern California
American Institute of Steel
Construction
Field Safety Certifications
Confined Space
Fall Protection (Ladders,
Scaffolding, Aerial Lifts)
3/2018
Office Location:

San Dimas, CA
Total Years of Experience:
(06/1981) 41
Years with Tetra Tech:
(06/1981) 41
Victor Ramirez, PE, SE
Structural Engineer / Project Manager
Ramirez, Page 2
assessments, inspections, investigations, perform testing, and provide structural and seismic analysis of nine District water storage reservoirs with a combined volume of 11.5 million gallons at full capacity. The nine reservoirs include five rectangular predominately buried concrete, three circular above ground concrete, and one circular above ground steel reservoir. Deficiencies identified were presented with prioritized alternatives for repair(s), retrofit, or replacement to ensure these facilities continue to operate and provide water following a seismic event. The District provides potable water to about 4,360 customer accounts that use approximately 5.5 million gallons of water per day.

3.1 MG Reservoir Seismic Strengthening, City of El Segundo, CA. 2010. Structural Project Engineer.

Structural Project
Engineer for the preparation of preliminary and final design construction plans, specifications and cost estimates for the seismic retrofit of an existing 3.1 MG concrete potable water storage tank, originally constructed in 1948. The seismic strengthening included the addition of reinforcing steel and shotcrete to the exterior walls, plywood roof sheathing and structural steel shear transfer frames around the tank perimeter between the roof and the wall shell. Safety upgrades included the design of new roof mounted guard railing. Structural observations, special inspection by a deputy inspector and material testing were provided as part of Tetra Tech's construction phase services.

3.1 MG Reservoir Seismic Vulnerability Evaluation Report, City of El Segundo, CA. 2010. Structural Project Engineer.

Structural Project Engineer for the Seismic evaluation of an existing 3.1 MG potable water storage tank with a cast-in-place conventionally reinforced circular concrete wall shell, precast concrete columns and a wood framed roof. The objective of the evaluation was to determine the improvements needed in order for the reservoir to meet current Code (ACI 350) seismic design loadings in terms of the structure itself (roof, walls, columns, foundations), as well as its piping (inlet, outlet, drain, and overflow), were determined. Safety and reservoir appurtenances were evaluated for OSHA compliance (ladders and hatches) and security (hatches and vents). Conceptual designs and costs for the recommended improvements were provided in the report. The recommended improvements were also ranked into one of four categories, depending on the urgency of the improvement, with respect of the threat to public safety.

Clearview Reservoir Assessment, Golden State Water Company, Santa Ana, CA. 2019. QA/QC Manager. QA/QC Manager for the visual assessment and seismic evaluation for the two concrete reservoirs at the Clearview site located at 1501 Clearview Ln. Santa Ana.

Simon Ranch Reservoirs, City of Tustin, Tustin, CA. 2017– 2020– Structural Project Manager Tetra Tech provided engineering services for the design and construction of a 1.0 MG prestressed circular tank. Our services started with the preparation of a Design Memo to select the optimum structure type, final design and construction phase services. The reservoir design features seismic isolation valves in a concrete vault and flexible piping connections that allow for differential seismic movement and differential settlement.

Plant 128 Seismic Evaluation & Retrofit Analysis, Suburban Water Systems, La Puente, CA 2018 - As Structural Project Manager, Mr. Ramirez is responsible for the QA/QC of the overall project for the visual assessment and seismic evaluation for Plant 128 Reservoir which is an aging concrete reservoir originally constructed as an open-air agriculture irrigation reservoir.

Structural Analysis of the Mira Flores No. 1 Reservoir, Golden State Water Company, Santa Maria, CA. 2016.

Project Manager and Structural Engineer. Project Manager and Structural Engineer to provided professional engineering services for their 0.3 MG tank. The Mira Flores No. 1 Reservoir is a rectangular semi-buried concrete masonry unit (CMU) water tank with a capacity of 0.3 MG. It measures approximately 82 feet by 42 feet with a depth of 15 feet. The reservoir has a wooden roof structure with skid mounted vertical turbine booster station located on top of the roof at the rear of the tank. Recent inspection showed that the roof reservoir is failing and needs replacement. Concerns regarding cracks in the concrete (cinder block) walls indicate that significant work will be required to reinforce the existing structure before re- roofing with a new aluminum roof and remounting the vertical turbine pumps.

MF Filtrate Tank Assessment, Leo Vander Lans Advanced Water Treatment Facility Water Replenishment District of Southern California, Long Beach, CA. 2019. Project Manager. Project Manager for the condition assessment of the existing 35,000-gallon capacity, welded steel, microfiltration filtrate tank at the Leo Vander Lans Advanced Water Treatment Facility (LVL). The microfiltration filtrate tank is founded on and anchored to a concrete foundation. The Tetra Tech team provided field investigation, condition assessment report, and recommendations.

Jose Quiroz, PE
Structural Design Engineer

Quiroz, Page 1
Mr. Quiroz has experience in the design, analysis and detailing in structural engineering. He is knowledgeable in the evaluation, condition assessment and seismic retrofit of existing reservoir structures. He is also skilled in the design of reinforced concrete, masonry, structural steel and wood frame design, and construction for a variety of building and infrastructure projects including reservoirs, water/wastewater treatment facilities.

EXPERIENCE
Lower Acacia Reservoir (1-D) Structural Rehabilitation, Design Phase Services and Construction Management, City of Fullerton, CA 2017-2019 – Structural designer assisting with the Design Phase and Construction Support Services for the improvements to the Lower Acacia Reservoir. Mr. Quiroz assisted with the preparation of the drawings and specifications that comprise the bid documents.

City of Riverside: Condition Assessment and Seismic Evaluation of the Emtman, University Heights, and Ross Reservoir, 2021. Structural design engineer assisted with performing a baseline condition assessment and seismic evaluation for three existing reservoirs: Emtman (5MG, 1960s), University Heights (5MG 1930s), and Ross Reservoirs (2MG, 1970s), and prepare the Preliminary Design Report (PDR) to summarize the findings and provide recommendations, budgetary estimates for tank retrofit and/or repair options a “Hazard Categorization & Prioritization Matrix” to help the City to prioritize the necessary rehabilitations when funding becomes available.

These three reservoirs are completely buried conventional reinforced concrete reservoirs (two rectangular and one circular). All three reservoirs have a concrete flat roof system supported by concrete columns.

Seismic Resiliency of 8 Reservoirs, Montecito Water District, Montecito, CA 2021- Present – Structural design engineer assisting with the design analysis and final design documents for the retrofits of four concrete reservoirs including Bella Vista reservoir, Cold Spring reservoir, Hot Springs reservoir, Buena Vista reservoir. Tetra Tech prepared Structural and Seismic Evaluation Report for ten of the District Storage Reservoirs back in September 2015, and the District selected Tetra Tech to prepare the final design document for the retrofit and provide construction support for eight of their reservoirs. The retrofit methods include reinforced concrete wall and footing overlay strengthening, steel roof seismic strengthening, roof to wall seismic connection strengthening, roof system replacement, and complete reservoir replacement.

City of Santa Ana: Condition Assessment and Seismic Evaluation of the Walnut Reservoir, 2021 – Structural design engineer responsible to perform structural and seismic assessment for Walnut Reservoir and prepare the Preliminary Design Report (PDR) to summarize the findings and provide recommendations. Walnut Reservoir is a 7.0 million gallon completely buried conventionally reinforced rectangular reservoir constructed in 1956. It has inside dimensions of 242-feet by 202-feet and a wall height of approximately 16-feet. There is a 10-feet tall divider wall at the center of the reservoir.

This reservoir is located under public tennis courts. Tetra Tech provide a certified on-site recure crew from a subconsultant for the reservoir entry for this on-site assessment.

Clearview Reservoir Assessment, Golden State Water Company, Santa Ana, CA 2019 – Structural Designer assisting with the visual assessment and seismic evaluation for the two c oncrete reservoirs at the Clear view site located at 1501 Clearview Ln. Santa Ana

Plant 128 Seismic Evaluation & Retrofit Analysis, Suburban Water Systems, La Puente, CA 2019 - Plant 128 Reservoir is an aging concrete reservoir originally constructed as an open-air agriculture irrigation reservoir. Tetra Tech evaluated the reservoir for seismic performance as well as leaking and possibly other issues.

Clearview Reservoir Assessment, Golden State Water Company, Santa Ana, CA. 2019. Structural design engineer assisting with the engineering visual assessment and seismic evaluation for the two partially buried concrete reservoirs (one rectangular and one circular) at the Clearview site located at 1501 Clearview Ln. Santa Ana. The circular reservoir has a capacity of 124,000 gallons and the rectangular reservoir has a capacity of 84,000 gallons. Not destructive Ground Education:

MS Structural Engineering
California State Polytechnic,
Pomona, CA
12/2017
BS Civil Engineering
California State University, Los
Angeles
06/2013
Registrations/Certifications:

Professional Engineer:

California No. 91482, 4/2020
Field Safety Certifications
Fall Protection (Ladders,
Scaffolding, Aerial Lifts)
3/2020

H
2S Protection Training
Respiratory Protection Training
Confined Space Training
(9/2019)
Professional Affiliations:

American Society of Civil
Engineers
Office Location:

San Dimas, CA
Total Years of Experience:
(2017) 5
Years with Tetra Tech:
(01/2017) 5
Jose Quiroz, PE
Structural Design Engineer
Quiroz, Page 2
Penetration Radar (GPR) was performed during the onsite assessment to location the existing wall and roof slab reinforcement for the circular reservoir.

MF Filtrate Tank Assessment at the Leo J. Vander Lans Advanced Water Treatment Facility, Water Replenishment District of Southern California, Long Beach, CA. 2018 – 2019. Structural design engineer assisting with the condition assessment and seismic evaluation of an existing 35,000-gallon welded steel tank at the Leo J. Vander Lans Advanced Water Treatment Facility. Work included the preparation of a technical memo that described our evaluation, findings, seismic analysis, and repair recommendations (with details, figures and exhibits), and cost estimates for the repairs.

FRP Platform Assessment at the Leo J. Vander Lans Advanced Water Treatment Facility, Water Replenishment District of Southern California, Long Beach, CA. 2018. Structural design engineer assisting with the condition assessment and seismic evaluation of the existing fiberglass reinforced plastic (FRP) platform at the Reverse Osmosis Clean-in-Place (RO CIP) system that is part of the Leo J. Vander Lans Advanced Water Treatment Facility to assess the extent of the deficiencies and deterioration in the existing platform, determined their probable causes and provided remedial recommendations. Work included the preparation of a technical memo that described our evaluation, findings, seismic analysis, and repair recommendations (with details, figures and exhibits), and cost estimates for the repairs.

Irvine Ranch Water District: Fleming Tank & Pump Station, Silverado, CA. 2021- Structural design engineer responsible with structural calculations (1.3MG prestressed tank, retaining walls, and CMU buildings) detailing, reviewing construction submittals, reviewing RFIs.

3.7 Million Gallon Zone 1 Reservoir Construction Support Services, IRWD, Irvine, CA 2018 - Zone 1 Reservoir Construction Phase – Mr. Quiroz assisted with structural calculations (prestressed tank, concrete vaults, retaining walls) detailing, reviewing construction submittals, reviewing RFIs Plant 408 Reservoirs, Suburban Water Systems, La Mirada CA. Ongoing. Structural Designer assisting with this multi- phased project to replace a 7.8 MG steel hopper bottom tank with three circular steel tanks and a pump station. Provided a condition assessment of the existing facilities and a conceptual design report for the replacement of the reservoir. The report evaluated various concrete and steel tank options as well as a geotechnical evaluation to stabilize a 2:1 slope and were used to obtain approval from the PUC.

Irvine Ranch Water District : PFAS Design at Shallow Groundwater Unit, Irvine, CA 2021-Present -Structural Design Engineer to provide design services for the Shallow Ground Unit (SGU) PFAS Water Treatment Plant.

Wells 3 & 4 Water Treatment Plant, Water Replenishment District of Southern California (WRD), 2022 (200- 37300-22001) – Structural Design Engineer for the Design, inspection & construction assistance services at Tract 349 Wells 3 &4 for the installation of a wellhead treatment system using oxidation-filtration to remove Iron and Manganese. (Tt ECA)/Prairie City State Vehicle Recreation Area (SVRA) Water Treatment Plant, Rancho Cordova, CA (200- 01299-22001) - Tetra Tech will prepare a Preliminary Design Report, Engineer's Report, Operation Maintenance and Monitoring Plan, and Division of Drinking Water Permit Application.

Yorba Linda Water District: Timber Ridge Pump Station Replacement 2021- Present. Structural design engineer assisting with structural and seismic calculations for the construction of a CMU Pump Building as well as designing retaining walls around the facility. Other tasks include reviewing of construction submittals and RFIs.

Water Oceanside Advanced Water Purification Facility, City of Oceanside, Oceanside, CA. 2020. Structural Engineer.

To counteract the growing reliance on imported water supply while increasing local water supplies, and to meet the City’s long-term goal of 50% water independence by 2030, the City of Oceanside has selected a team led by Tetra Tech to design a new Advanced Water Purification Facility (AWPF). The newly proposed AWPF will provide highly-treated water supply with the specific purpose to recharge the MGB in the
upper San Luis Rey recycled water service area through indirect potable reuse as a component of the overall Pure Water Oceanside project. The AWPF will be built on an existing former recycled water storage pond at the San Luis Rey Water Reclamation Facility. The AWPF process will be designed as a multi-barrier treatment process including microfiltration, reverse osmosis, and ultraviolet advanced oxidation process. In addition to these three main unit treatment processes, the AWPF will include chemical storage and feed equipment for conditioning, stabilizing and membrane cleaning. The facilities design also includes influent flow storage, flow diversion, and associated pumping.

Kenneth R. Berard, P.E.

Civil Project Manager
Berard, Page 1
Mr. Berard has extensive experience in many facets of water/wastewater engineering. Mr. Berard has performed numerous studies ranging from complete water master plans to efficiency studies. His design experience includes preparing bid documents for sewers, reservoirs, pump stations, wells, pipelines, chlorination facilities, and pressure reducing facilities. Mr. Berard also has extensive experience in hydraulic modeling. He has used and is familiar with more than six software packages in addition to open channel flow software.

Rounding out Mr. Berard's experience is work he has done in inspection, construction administration, shop drawing review, and plan checking.

EXPERIENCE
Plant 408 Reservoirs, Suburban Water Systems, La Mirada CA. 2018.

Project Manager for this multi-phased project to replace a 7.8 MG steel hopper bottom tank with three circular steel tanks and a pump station. Provided a condition assessment of the existing facilities and a conceptual design report for the replacement of the reservoir. The report evaluated various concrete and steel tank options as well as a geotechnical evaluation to stabilize a 2:1 slope and were used to obtain approval from the PUC.

The project design and construction was divided into 4 phases. Tetra Tech and Suburban Engineering collaborated to provide a jointly engineered project.

Demolition involved wastes such as AC pipe, lead paint, oil impregnated soils, and asbestos. Rough grading of the site required about 60,000 CY of earthwork and construction of over 1000’ of retaining walls. The walls surrounding the site retained from 10’ to 18’ with slopes used to reduce wall heights. The majority of wall utilized piles and tie-back construction while smaller portions utilized pile walls without tie-backs, concrete walls, and CMU construction. Water improvements included two 2.4 MG steel tanks, a 1.9 MG steel tank, and a 3,000 gpm pump station.

Reynolds Ranch Reservoir, City of Vacaville, Vacaville, CA. 2018. Project Manager for a preliminary design report, final design, and construction assistance for a new prestressed concrete 0.53 MG reservoir with valve vault.

The PDR evaluated alternative configurations, layout, operations, geotechnical conditions, seismic constraints, community impacts, and environmental issues. The Partially buried reservoir required hillside grading for the site and access roads. The valve vault is 18’ x 16’ 10’ deep with staircase/door style of entrance. The 400’ of piping utilized concrete anchors due to steep slopes.

Murphy West Reservoir No 10, City of Whittier, Whittier, CA. 2017. Project Manager to assess the condition and make recommendations for a 0.5 MG conventionally reinforced concrete tank. Condition assessment included locating the source of leaks, performing geotechnical analysis to determine foundational stability, and s roof surface evaluation. The repair recommendations included stabilizing the foundation, leak repairs, and improvements to meet DDW’s access requirements.
20 MG Memorial Park Underground Reservoir and Booster Pump Station, City of Santa Monica. Santa Monica. CA. 2013. Project Manager for feasibility study, predesign report, and final design for their recycled water system. The study focused on the development and selection of viable alternatives that would provide the required storage and pumping while causing the least impact to Memorial Park. The feasibility study recommended that the reservoir be constructed entirely below grade, underneath the existing tennis courts. The pump station would be located under the existing parking lot with the only impact being a loss of a couple of parking lot trees. During the development of the Preliminary Design Report, a location for the pump station adjacent to the park became available and allowed for above ground construction in order to reduce project costs. The PDR addressed items such as environmental documentation, facility configuration and layouts, construction grading/shoring, and construction staging areas as well as construction costs and schedule.

Project Role:

Project Manager
Education:

B.S., Civil Engineering,
California State Polytechnic
University, Pomona, 1986
Registrations/Certifications:

Professional Civil Engineer,
California, No. 45499, 1992
Professional Affiliations:

American Water Works
Association
Inland County Water
Association
Office:

San Dimas, CA
Years of Experience:
33 Years with Tetra Tech:
33 Kenneth R. Berard, P.E.

Civil Project Manager
Berard, Page 2
Mount Washington Reservoir, City of Calistoga, Calistoga, CA. 2013. Project Manager for a fully-buried 1.5 MG concrete reservoir on Mount Washington. A Preliminary Design Report was prepared that addressed technical, environmental and budgeting issues, along with recommendations for optimizing the storage configuration, access road alignment and grading. Construction plans, specifications and estimates were prepared. Tetra Tech will be providing construction assistance support services, such as shop drawing review and responding to RFI'’s.

Big River School Water Systems Improvements, Needles, CA. 2011.Project Manager for design and construction assistance for the Big River School water system. The water system included two 25 gpm wells, 0.55 MG welded steel tank, on-site chlorine generator, domestic water booster pumps, hydropneumatic tank, 2,000 gpm fire pumps, and associated piping and site work. Permitting was obtained from the State Architect.

High Zone Recycled Water Tanks, City of Chino Hills, Chino Hills, CA. 2011. Project Manager for design of two steel tanks at separate sites (0.5 MG and 2.0 MG) to store recycled water. Both sites were in steep hillsides requiring extensive grading along with about 3,200 feet of access road and access road improvements and 950 feet of 8-inch and 16-inch water main.

Coldwater Canyon Reservoir Construction Phase, City of Beverly Hills, Beverly Hills, CA. 2010. Project Manager to provide engineering support for the construction of an 8.3 MG buried conventionally-reinforced concrete reservoir. The Coldwater reservoir is configured to maximize water storage on an irregular-shaped site that is designed with a public park on the surface. The design includes two reservoir chambers and inlet/outlet piping configured to provide operational flexibility. The design also includes a sub-drain system with leak detection, reservoir drain and overflow piping, flow meter vaults with seismic valve shut-off, an above-grade penthouse with water analyzing equipment and workspace, and a landscaped public park with decorative fountains and running track. Among the support services provided to the City were civil and structural site observations, review of contractor’s material and equipment submittals, responses to RFIs, and the management of various sub-consultants for shoring design review, survey monitoring, noise and vibration monitoring, corrosion protection design and construction observation, geotechnical testing and site observation, and landscape architectural coordination.

Reservoir 7A, City of Pomona, Pomona, CA. 2010. Project manager for demolition of an existing 1-million- gallon steel tank and replacing with a new 1 million gallon steel tank. Services included PDR, permitting (CDPH, CEQA, and SWPPP) final design, construction assistance/inspection. Also tested existing tank for hazardous materials and included necessary construction requirements to handle lead and chromium. Project location is adjacent to a large City park with a shared access road. 1010-1 Reservoir Seismic Piping Retrofit, City of Ontario, Ontario, CA. 2010. Project engineer for the addition of double ball flex joints for a 5.5 MG steel reservoir. The piping required an extension of the tank foundation in order to provide the proper piping foundation. The project also included interior and exterior recoating work.

Reservoir Safety and Seismic Upgrades, City of Pomona, Pomona, CA. 2009. Project Manager for evaluating, recommending improvements, designing improvements, and providing construction support for three steel reservoirs. The retrofits included tank recoating, inserting flexible pipe joints, adding OSHA complaint rails and ladders, providing an air gap for the overflow piping, and other improvements.

9.0 MG Milliken Reservoir 1010-2B, City of Ontario, Ontario, CA. 2008. Project Manager for the design of a second 9.0 MG “twin” reservoir (1010-2B) to the 9.0 MG Milliken Avenue Reservoir designed by Tetra Tech and completed in 2001. This same-site tank is being designed with the same “sports arena” façade to mitigate the visual impact of the reservoir and blend with the surrounding industrial park.

Demolition of Three Reservoirs, City of Upland, Upland, CA. 2008. Project Manager for the project that includes demolition of three partially buried concrete reservoirs ranging in size from 0.75 to 2.1 MG, rough grading, and construction of 500 feet of CMU wall. Design included plans, specifications, and cost estimate.

SUBCONSULTANT

Thursday, July 14, 2022

Proposal No. IR22-394
Tetra Tech, Inc.
160 East Via Verde, Suite 240
San Dimas, California 91773-5123

Attention: Mr. Eric Yuen, PE, SE
Structural Project Manager

Subject: Proposal: Seismic Evaluation Geotechnical Exploration City of Fullerton Public Works Department
West Coyote Hills Tank 1C Rehabilitation

2.0-MG Reinforced-Concrete Potable Water Tank
2470 West Pioneer Avenue
Fullerton, Orange County, California

In response to your e-mail on Monday, July 11, 2022, Leighton Consulting, Inc. is pleased to present this proposal for geotechnical support of your structural evaluation of the City of Fullerton’s existing 2.0-million-gallon (MG) “Coyote 1C Tank,” located within the West Coyote Hills of western Fullerton. P urpose of our exploration will be to evaluate subsurface conditions and provide geotechnical conclusions and recommendations with respect to this existing “Coyote 1C Tank.”

QUALIFICATIONS
Due to our long-term experience working with Tetra Tech on similar water tank projects, Leighton Consulting, Inc. is uniquely qualified to provide geotechnical services for this project. Our lead geotechnical engineer will be Tom Benson, who is a California licensed Geotechnical (GE) and Civil (PE) Engineer, with 40 years of waterworks experience in southern California; and has worked with Tetra Tech Principals for more-than (>) 25 years. He has extensive experience in northern Orange County, including the Coyote Hills.

Fullerton Coyote 1C Tank Rehabilitation IR22-394
- 2 -

PROJECT DESCRIPTION
Site Location and History
This existing 2.0-million-gallon (MG) “Coyote 1C Tank,” reinforced concrete potable water tank is located atop a hill south of Pioneer Avenue, west of and uphill from Gilbert Street.

Access to this site is via a locked gate south of Pioneer Avenue. Tetra Tech is proposing to perform a structural evaluation of this existing tank.

We understand that no new construction is currently proposed.

Rev
iewing 1935 to 1950 USGS quadrangles and provided as-built plans, we see that this site was an open water reservoir with a perimeter earth berm, until the perimeter berms were removed and the site flattened to construct the tank in 1958 . We are unaware of any geotechnical data for this site, but the new tank was apparently primarily constructed at the bottom of the demolished reservoir approximately at elevation 260 feet (presumably NGVD29 datum):

Fullerton Coyote 1C Tank Rehabilitation IR22-394
- 3 -
Geotechnical Setting
We are unaware of any site- specific geotechnical data . However, this site is not located within a currently -designated Alquist -Priolo Special Studies Zone for faulting.

Therefore, although strong ground shaking is expected at this site, fault trenching is not mandated for this site and is, therefore, not included in this proposed scope. Also, as shown on the November 17, 2000 Seismic Hazard Zones Official Map for the Ontario Quadrangle this site is not within a potential liquefaction hazard zone or an earthquake- induced landslide zone. Therefore, a liquefaction analysis is not required and is, therefore, also not included in this proposed scope.

Site-specific geotechnical concerns that we believe should be explored include:

 Abandoned Reservoir Remaining Fill : In 1958 and before then, earthwork compaction was not performed to current standards, so compressible fill may remain under portions of this tank. As a result, there could remain a seismically-induced differential settlement concern under this tank.
 La Habra Formation (Qlhc ): La Habra Formation is mapped regionally by Dibblee (March 2001, Dibblee Map #74), dipping south (downslope) with an unknown dip angle in th is very young conglomerate. Dibble calls out “including interbedded siltstone,” which could act as planes of weakness particularly for seismically-induced slope instability.

PROPOSED BASIC GEOTECHNICAL SCOPE
In summary, we propose to drill two large-diameter bucket-auger borings adjacent to (on the south side of) this existing tank for downhole geologic logging, and to evaluate engineering characteristics of underlying earth materials, perform geotechnical laboratory testing at our in- house laboratory, perform geotechnical analyses and prepare a geotechnical report of our findings to support your structural evaluation of this existing tank. We will coordinate our fieldwork with you for site access and existing utility avoidance. Our proposed scope of work is discussed in more detail as follows:

 Background Review: We will review pertinent geotechnical reports, geologic maps, other literature and historic aerial photographs available from our in- house library. A portion of this review has been performed while preparing this proposal.  Site Utility Clearance: Before we begin fieldwork, we will mark our proposed boring locations and notify you and DigAlert (811), so that known public underground utilities can be identified. We would ask you to provide us with any information available regarding locations of underground utilities within the site (we have some piping plans Fullerton Coyote 1C Tank Rehabilitation IR22-394
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already). We cannot assume responsibility for the inherent risks if utilities are not accurately marked at the site or made known to us.

Geotechnical Boring: We propose to drill, log and sampl e two 30-inch-diameter bucket-auger geotechnical borings immediately southeast and southwest of this existing potable water tank; drilled to depths up to 50 feet below the existing ground surface, or to shallower practical refusal. These borings will be drilled by a subcontracted truck-mounted three- axle bucket -auger drill rig operator and will be located in areas accessible to a large truck rig. Relatively-undisturbed drive-samples of earth materials using a California ring-lined drive sampler, driven by a telescoping Kelly-bar will be performed. Two bulk (bag/bucket) earth material samples will also be collected at each boring location, and all recovered soil samples will be brought to our in-house, geotechnical laboratory in Irvine.

Borings will be logged by a Leighton Staff Geologist, with afternoon downhole verification logging by a Leighton Certified Engineering Geologist (CEG). Downhole geologic logging will only be performed if deemed safe by our CEG, in accordance with Section 1542 (d) of the California Construction Safety Orders . Although not expected at this site, caving earth and/or hazardous vapors can interfere with safe downhole logging. Cobbles in the La Habra Formation could pose a hazard for downhole logging and could limit depth of safe downhole logging. Immediately following sampling and downhole logging, our borings will be backfilled with drilling cuttings.

We note that there is an old (<1923) oil tank located northwest of this potable water thank. However, iden tification, handling and treatment of hazardous materials are beyond the scope of our currently -proposed geotechnical engineering services. If encountered, we can then propose to address this.  Geotechnical Laboratory Testing: We will test recovered soil samples at our geotechnical laboratory, including testing representative bulk and relatively undisturbed soil samples, in general accordance with applicable ASTM Standards .

Geotechnical testing is anticipated to include moisture content and dry density, sieve analyses, maximum dry density and optimum moisture content , direct shear (remolded), consolidation and corrosivity ( soluble chloride and sulfate content, minimum resistivity and pH).
 Office Studies: We will review acquired subsurface and laboratory data and perform geotechnical engineering analysis to develop geotechnical conclusions and recommendations for this existing tank site. We will prepare a geotechnical report presenting our findings, conclusions and recommendations. This report will be signed and stamped by a California-licensed Civil and Geotechnical Engineer (G E), and a Certified Engineering Geologist (CEG). Our report will address the following:
 Site Conditions: We will review and summarize surface, subsurface, groundwater conditions (available past and present) , and engineering properties of soils Fullerton Coyote 1C Tank Rehabilitation IR22-394
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encountered during drilling . We will discuss excavation characteristics of encountered subsurface materials, including ease or difficulty of excavation.  Seismicity: We will provide a regional fault map showing proximity of this site to major faults identified by the California Geological Survey (CGS). We will also provide site- specific seismic coefficients in accordance wit h 201 9 California Building Code (CBC) and ASCE 7 -16. A site -specific seismic analysis is not included in our basic scope, but can be provided as Option 4 , presented later in this proposal.
 Slope Stability: We will evaluate static and pseudo- static stability of the south facing slope between the tank at the top and apartments to the south at the toe.  Foundation Design: Utilizing data collected during our explorations, we will provide foundation design parameters, which may be used for your structural assessment of the existing reservoir . We will recomm end allowable bearing pressures, minimum foundation size, minimum embedment depth, and expected total and differential settlements.
 Lateral Earth Pressures: We will provide recommended lateral earth pressures for active, at-rest and passive conditions, and soil friction for retaining wall design.

We will also provide incremental seismic earth pressures.

OPTIONAL GEOTECHNICAL SERVICES
Option 1: Private Utility Locator (At Proposed Boring Locations) As noted above, for our subsurface exploration, we will contact Dig Alert (811) prior to beginning drilling so that registered public utilities in the area of our proposed borings will be marked. However, USA will not mark unregistered utility locations, nor will they mark areas within locked gates. Therefore, unless a private utility locator is subcontracted, we will need the City to mark all buried utilities at our proposed boring locations; or provide us with up-to-date utility plans prior to exploration. We are not responsible for damage to unidentified underground structures. We therefore recommend requesting a private utility locator to help reduce the risk of damaging underground utilities during subsurface exploration, especially at sites where little information is available regarding existing underground utilities. If desired, we can subcontract a private utility locator.

Option 2a or 2b: Descending Slope Drone Survey
As an option, we can provide a Certified Engineering Geologist (CEG) for up to four hours on site to view a drone survey of the descending slope and drainage improvements, with follow up interpretation in the office (10 hours total with drive time). We provide two sub- options, with Option 2a using drones provided by others, or Option 2b, where we subcontract Earth Forensics, Inc. to use their drone directed by our CEG. Note that for Option 2a, we assume we will be able to (need to) direct the drone to areas of concern, Fullerton Coyote 1C Tank Rehabilitation IR22-394
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with your provided operator/“pilot.” Option 2b will include aerial photo imagery and thermal aerial imagery (an enhanced value for geologic interpretation) . Option 2b will also include a slope topographic map. Our fees for either option are based on the assumption that either 2a or 2b (not both) will be authorized at the same time our basic scope is authorized. Results of this additional work will be incorporated into our b asic- scope report (and cannot be authorized separately).

Option 3: Field (In-Situ) Soil Field Resistivity Testing As another option, for site-specific corrosion evaluations, we can perform field resistivity tests adjacent to this potable water reservoir using a Wenner 4-point resistivity meter and probes in unpaved areas of this site (presumably if there is no existing corrosivity testing results). Tests will be performed in existing open soil (unpaved) areas. Readings will be obtained at 2- , 5-, 10- and 15-foot spacing. Results will be tabulated and presented in our report, and we will discuss soil resistivity results with respect to ferrous pipe/reinforcing steel corrosivity. Our fee for this option is based on the assumption that these field resistivity tests will be authorized simultaneously with our basic scope and reported in our basic scope geotechnical report . O ur fixed fee for this option does not cover independent mobilization of this task nor separate report writing, which would be more costly.

Option 4: Site-Specific Seismic Analyses and Tripartite Response Spectra As an option, in accordance with ASCE 7- 16, we can perform site- specific probabilistic seismic hazard analyses and develop tripartite response spectra for periods ranging from

0.01 second to 10-seconds, for ½%, 2% and 5% damping. Our fixed fee for this option is based on the assumption that these optional seismic analyses will be authorized simultaneously with our basic scope and reported in our basic scope geotechnical report.

Our fixed fee for this option does not cover separate report writing, which would be more costly.

Option 5: Plans and Specifications Review, and Services During Bidding Upon request, as an option, we can review draft plans and specifications pertaining to the geotechnical aspects of this project. We can provide services during bidding to respond to contractor’s questions pertaining to geotechnical aspects of this project and prepare a clarification letter(s), if needed. This option is based on four hours of Senior Principal Geotechnical Engineer (GE) time. This proposal does not include geotechnical testing and observation during construction.

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SCHEDULE
We will begin the geotechnical exploration immediately upon receipt of your written authorization to proceed. Depending on potential site access constraints, weather an d exploration equipment availability, field exploration may begin three to ten working days after we receive written authorization. This mobilization time can be reduced if we are provided advanced notice of your intent to proceed with this work. Drilling and downhole logging will require two days to complete (one day for each boring to drill, sample, downhole log and backfill) . Geotechnical l aboratory testing, analysis and report preparation will require three to four weeks to complete. Project briefings can be provided as our data is developed, upon request. Project telephone briefings/status e-mails can be provided as our data is developed, upon request.

FEES AND TERMS
We will provide these geotechnical services for the fixed fees listed below:

Geotechnical Exploration Fees
Basic Scope Geotechnical Exploration
Geotechnical Exploration ................................................................. $25,460 ______________ Two prevailing wage bucket-auger borings (≤50 feet), CEG downhole Geotechnical laboratory testing
Geotechnical evaluation report

Optional Geotechnical Services
Option 1: Private Utility Locator .............................................................. $ 990 _______________ Option 2a: Drone Survey Geologic Review (drone provided by other’s) $ 1,975 _______________ Option 2b: Drone Survey Geologic Review (Leighton drone) ................. $ 5,150 _______________ Option 3: Field (In-Situ) Soil Resistivity Testing ...................................... $950 _______________ Option 4: Site-Specific Seismic and Tripartite Response Spectra .......... $ 5,950 _______________ Option 5: Plans and specifications review; bidding response ................. $ 1,200 _______________ Please initial to authorize

Please initial nex t to the optional task to authorize. Our “basic” fixed fees, above, excludes (1) permits, (2) evaluation of the potential for hazardous materials at any site, (3) meetings, and/or (4) hard copies of our report beyond a PDF (electronic file). Let us know if these additional services will be required. It is our understanding that the scope and tasks for this project are subject to California prevailing wage laws. Driller costs would decrease if this were not the case. This fee is based on the assumption that our borings can be drilled during normal weekday daylight -hours, without any site stand-by or delay. Additional costs, not included in this proposal, will be incurred for nighttime or weekend drilling. This proposal does not include geotechnical testing and/or observation during construction.

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Terms and Conditions
As in the past, we assume this work will be authorized under a standard Tetra Tech Subconsultant Professional Services Agreement revised (“9.19.02”), previously negotiated with Leighton Consulting, Inc. If you wish us to proceed, please send us such an agreement to our Rancho Cucamonga office.

CLOSURE
We appreciate the opportunity to be of additional service to Tetra Tech. If you have any questions or information that would update our scope of work, please call us at your convenience at (866) LEIGHTON, directly at the phone extension and/or e-mail address listed below.

Respectfully submitted,

LEIGHTON CONSULTING, INC.

Thomas C. Benson, Jr, PE, GE
President and CEO
Extension 8771, [email protected]
TCB:tcb

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COYOTE 1C TANK
Rehabilitation