Storm Drain Master Plan Scope and Fee.pdf — Fontana City Council, September 13, 2022

David Evans and Associates, Inc. | November 26, 2021 | 1 Submitted by
Master Plan of Storm Drain Update
June 9, 2022
Proposal No. SQ-87-DE-19-33 for Design Services
Submitted to

David Evans and Associates, Inc. | June 9, 2022 | ii Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

TABLE OF CONTENTS

SECTION PAGE
Cover Letter 1
Project Team 2
Scope of Work 3
Project Schedule 7
Fees 7
Relevant Projects 8
Hourly Rates 10
Appendix - Resumes
June 9, 2022
Mr. Sid Lambert
Purchasing Office
City of Fontana
8353 Sierra Avenue
Fontana, CA 92335
Re: Proposal to Provide Design Services for Master Plan of Storm Drain Update (SQ-87-DE-19-33) Dear Mr. Lambert and Selection Committee Members:

David Evans and Associates, Inc. (DEA) is pleased to submit our proposal for the Fontana Storm Drain Master Plan Update.

The City of Fontana (City) has experienced significant growth since the last comprehensive evaluation of the City’s master plan in 1992, that was completed by our legacy company Hall & Foreman. Several updates to the 1992 master plan have been evaluated over the last 30 years which have deviated from the original plan. The City needs the chosen consultant to integrate the already constructed 1992 master plan facilities, the new development facilities, and existing facilities to see where hydraulic constrictions exist and determine the most cost-effective way to alleviate the constrictions.

The benefits of working with DEA include:

Extensive Understanding and Knowledge of the Proposed Project: DEA understands the importance of this project for the City. Our scope, approach, and clarifications reflect our experience with similar projects for the City including the North Fontana Drainage Master Plan Study and the South Fontana Master Plan of Drainage Alternative Analysis for the Sierra Avenue Detention Basin.

Senior Project Manager that Specializes in City Master Plans: Project Manager Rebecca Kinney has more than 20 years of experience with City Storm Drain Master Planning in Southern California. She strongly believes that the best master plans are living documents that can be easily updated in the future, and facilitate City transparency on public funding of storm drain infrastructure. Based on her vast experience, she has crafted our scope and approach to help the City focus it’s funding on the areas within the City that are in most need of improvements. Rebecca has used this approach recently on the Yorba Linda Master Plan of Drainage which includes extensive GIS updates and focuses on specific watersheds in the city.

Quality Control with a Manager that completed previous Master Plans for the City and surrounding areas: Gavin Powell will serve as the Quality Control Manager and bring his wealth of knowledge on the City’s storm drain system to the team. He has also authored several neighboring city storm drain master plans.

From recent conversations with the City, we have learned that a successful Master Plan will focus on the older parts of the City between I-10 and I-210 [Area of Study (AOS) 1 in the RFP] where fewer of the 1992 master plan facilities have been constructed. Other areas of interest (AOS 2 & 3) will be evaluated in less detail. Additional key elements include:

Collecting and Evaluating Data
Evaluating facilities constructed since the 1992 Master Plan Identifying potential deficiencies in the current system Assessing future development areas and corresponding facility needs Collaboratively prioritizing capital improvement program (CIP) projects for each of the AOS Preparing documentation including updated Master Plan Maps and costing of projects.

We pride ourselves with consistently delivering solutions that are practical, applicable, fundable, and cost-effective. Working collaboratively with our clients, we deliver successful projects and work products that are right-sized and of high-quality.

As project manager, I am pleased to present this proposal and our team of experts that will continue to work closely with you to meet your expectations.

Sincerely,
David Evans and Associates, Inc.

Rebecca Kinney, PE, CFM
Project Manager
4141 East Inland Empire Boulevard Suite 250 Ontario, CA 91764 T: 909.481.5750 F:909.481.5757 David Evans and Associates, Inc. | June 9, 2022 | 2 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

PROJECT TEAM
As illustrated in the
organization chart to the
right, DEA has the
expertise and staff
resources to successfully
deliver this project. Our
team will be led by Project
Manager Rebecca Kinney,
PE, CFM. She has extensive experience in all
phases of stormwater management projects
including planning, design, and construction.

Her recent experience has focused on the
development of master plans of drainage,
which focus on storm drainage facility sizing,
stormwater NPDES compliance, stream
stability, and floodplain management. Her
planning experience includes large municipal
planning and master planned communities,
as well as supporting hydrologic and
stormwater quality analysis as a basis for
CEQA documentation.

Staff Name Years of
Experience
Education / Registration Experience
Rebecca Kinney 26 BS, Civil Engineering / PE, CA #58797 Certified Floodplain Manager, (19-11256)
Rancho Mission Viejo Runoff Master Plans and
Drainage Design
Santa Ana Storm Drain Master Plan
Yorba Linda Master Plan of Drainage
Gavin Powell 22 BS, Civil Engineering / PE, CA #67187; PE, OR #63117
North & South Fontana Drainage Master Plan Study
Ontario Master Plan of Drainage Update
Rialto Master Storm Drain Plan Update
David A. Jaffe 21 PhD, Civil and Environmental Engineering; MS, Civil and Environmental Engineering, 2002; MS,
Physical Marine Science; BA, Earth and Planetary
Sciences / PE, CA#68321
Planning Level Technical Study Cahuilla Band of
Indians Roadway Culvert Improvements
Avenue 50 Extension Coachella
I-10 / Avenue 50 Interchange
Rianne Okamoto 6 BS, Civil Engineering / Engineer-In-Training, CA #162501; PE, OR #100192PE; PE, WA #22014639
Rancho Mission Viejo Runoff Management Plans
Yorba Linda Master Plan of Drainage
Dominguez Channel Watershed Study
Michael Becerra 8 BS, Civil Engineering/ Engineer-in-Training, CA #151952
North Fontana Drainage Master Plan Study
South Fontana Master Plan of Drainage
Rialto Master Plan of Drainage Update
Nick Zamarripa 10 BS, Civil Engineering; MS, Civil Engineering:

Emphasis in Water Resources / PE, CA # 86476
Master Plan of Storm Drainage for North and West
Santa Ana River Tributary Areas
Los Peñasquitos Watershed Drainage Master Plan
Avenue 50 Extension – La Entrada Development
Melissa Foltz 22 BS, Horticulture Science/Landscape Design, 2000 Lebanon Storm Drainage Master Plan and West Side Sanitary Sewer Interceptor
Roadway Capital Improvement Plan (RCIP) Update
Sara Gilbert 25 MS, Earth Sciences (GIS); BS, Geography / GISP Alderwood Tap 115kV Transmission Project West Side Sanitary Sewer Interceptor Analysis
Willamette Water Supply Program Preliminary Design
and Permitting

David Evans and Associates, Inc. | June 9, 2022 | 3 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

SCOPE OF WORK
Based on the RFP scope of work and our extensive experience in Storm Drain Master Planning, we have developed the following approach and clarifications for each of the scope tasks. Woven through each of the scope task items is our overall approach to the project challenges presented below:

Challenge Solution
Data – Storm Drain Master Plans are only as good as the data used to create them.

Thoroughly review the existing City data and develop an approach that will allow for detailed hydraulic modeling in areas where it is recommended and less detail in areas where models are not required.

NOAA 14 Rainfall Data – In the Fontana area, the
difference in rainfall is up to 25% more than what was
used in the 1992 Master Storm Drain Plan (MSDP) (NOAA
2).

The updated NOAA Atlas 14 publication includes data from several rain gauges which were not available at the time of the prior publication of NOAA Atlas 2, as well as 25 years of additional data at several of the rain gauges used in NOAA Atlas 2.

It is important to utilize the increased rainfall rates as much as possible as higher runoff is expected to enter
the storm drain system. Planning and design using the
updated rainfall records will help extend the useful life of the system. Past studies have used a combination of
NOAA 2 and NOAA 14, however, we recommend requiring
future development to mitigate to the NOAA 2 runoff levels.

The update would then consider evaluating each system
for future design guidelines as far as what rainfall design standard should be used for master plan CIP projects.

Deviations from 1992 MSDP – Several areas have deviated from the current MSDP, which may have resulted in
downstream deficiencies.

After assessing the areas that have deviated from the 1992 MSDP, DEA will determine the impact on the existing storm drain infrastructure and then determine if additional storm drain improvements are required as part of the master plan.

Land Use Changes (between 1992 MSDP and current
general plans) – Brief evaluation of the Land Use in the 1992 MSDP land use and the current general plan land
use shows that the 1992 MSDP used ¼ acre lots, while
the newer development in the City appears to be a higher density.

DEA’s overall approach is to use as much of the 1992
Master Plan as possible to minimize the cost of preparing the study. Therefore, one of the first overall tasks during our data collection will be to provide a land use difference map for evaluation prior to any modeling.

Existing Floodplains in the City – Floodplains in the City present challenges to storm drain master plans because
they produce high tail waters for tributary storm drain connections. High tail waters limit the capacity a storm drain can convey and require more complex modeling
procedures for large systems.

Floodplains in the City extend from the Etiwanda/San
Sevaine channel on the west end of the City (A0S 01 and 2) and in the West Fontana Channel Area (AOS 1) where
shallow flooding escapes the channel and flows south
along Beech Avenue. DEA’s team has experience working
with high tail water systems and storm drain master plans.

We have helped multiple cities collaborate with County
Flood Control Districts to determine appropriate modeling parameters and assumptions based on expected future
regional improvements.

David Evans and Associates, Inc. | June 9, 2022 | 4 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Task 4.1 – Data Collection and Review
Data is the foundation of all master planning, therefore, it is important to understand what data exists and where there are gaps in the data. DEA will create data maps in GIS and export tables showing what data is available spatially, so DEA can advise the City on appropriate methods to fill gaps for each Area of Study (AOS). The investigation will particularly pay attention to facilities constructed since the 1992 MSDP. This task will also include review of
the precipitation data for each of the AOS's to determine recommended modeling parameters which will be
documented in the detailed memorandum.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

City’s GIS data will be made available to the consultant.

City’s reports and storm drain plans will be made
available to the consultant.

Data and historical records of known flooding areas or
areas of repeat maintenance issues will be provided by
the City.

Hydrology approach for each AOS will be determined
individually.

Land uses will be compared between the 2021 land use
plan and the 1992 MSDP in a GIS-based land change
map.

DEA will include a table listing all data collected.

A detailed memo will be prepared recommending field
investigation to verify data gaps.

Task 4.2 Master Plan Report – AOS 1 (Between I-10
and I-210 Freeways)
The area between the I-10 and I-210 Freeways will be
modeled by a Full Detailed Hydrology and Hydraulics
study using San Bernardino County Hydrology Manual
and Coupled 1/2D hydraulic model. Coupled 1 and
2 dimensional (1D and 2D) hydraulic modeling, is
recommended for AOS 1 to better understand potential
flooding issues associated with the interface of old and new storm drain systems. These models can evaluate locations where surface flows (2D) interact with subsurface (storm drain) facilities (1D). The models allow the runoff to flow from the 2D surface to the 1D storm drain, and can also reverse flow from the 1D storm drain to the 2D surface
model. These models are especially helpful in analyzing systems with flat terrain, like the City of Fontana. In comparison to traditional models like WSPG, the coupled 1D and 2D models have shown to provide substantial cost savings related to storm drain infrastructure. The DEA team has seen a savings of up to 50% between traditional model and coupled 1D and 2D modeling.

This approach is recommended for this area because
the area contains the mapped floodplains and older
infrastructure. The approach requires detailed storm drain data, including as-built inverts in GIS, to import it into the hydraulic model. Hydrology, including detailed hydrographs, will be prepared for each inlet in accordance with San
Bernardino County Flood Control Hydrology Manual.

Coordination with San Bernardino County Flood Control on committed water surfaces for the downstream control for hydraulic model will be required. The existing and proposed Through DEA's experience with master planning, we have broken down the master plan into three phases, Plan & Prepare, Analyze, and Prioritize & Document. The flow chart below is a visual depiction of an efficient way to customize and move a master plan through to completion. While the City's RFP doesn't have the scope broken down similar to the graphic, all of the elements in the graphic are included in the scope presented in the RFP. ● Work with City to create
prioritization criteria
● Create prioritized list of
proposed improvement
recommendations
● Develop CIP
● Produce comprehensive
master plan document

PRIORITIZE &

DOCUMENT
● Delineate watershed and model
existing condition hydrology
and hydraulics
● Identify deficiencies
● Complete feasibility analysis
● Model proposed improvements
● Calculate project cost
estimates

ANALYZE
● Identify goals
● Gather as-builts, GIS data, and
previous studies
● Understand known flooding
and issue locations
● Select modeling approach
● Determine deficiency criteria
● Review and organize as-builts
and update GIS database

PLAN & PREPARE
Quality Assurance / Quality Control
David Evans and Associates, Inc. | June 9, 2022 | 5 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
models for this area will be developed, and Master Plan projects will be recommended based on 1) existing storm drains that are undersized and 2) unconstructed master
planned storm drain from the MSDP. Prioritization of the projects will be determined collaboratively with the City and DEA to update the CIP plan. This task includes a
prioritization memorandum and workshop with the City.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

Only public mainline pipes larger than 18 inches will be included in this analysis
Catch basins will not be modeled.

Surface elevation data for this area of the City will be provided by either the City or the county.

A prioritization memorandum and City workshop is
included.

Task 4.3 Master Plan Report – AOS 2 (South of I-10
Freeway)
To focus the City’s efforts on the areas which need the most detailed study, the area south of the I-10 freeway has been mostly developed since the 1992 MSDP was completed.

The area drains to the DeClez Channel and does not contain any floodplains associated with the channel. Therefore, the study will include higher level hydrology based on the San Bernardino County Hydrology Manual and hydraulic analysis of only backbone pipe sizes larger than 30” on areas
tributary to the DeClez Channel. The analysis will focus on making sure that the improvements that have been made
since the 1992 MSDP and South Fontana updates are
adequate to convey storm flows. The hydrology will contain basin routing for the Sierra Avenue basin as discussed in the South Fontana Update.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

Only public pipe sizes larger than 30” will be modeled.

A prioritization Memorandum and City Workshop is
included.

Catch basins will not be modeled.

Task 4.4 Master Plan Exhibit – AOS 3 (North of the
I-210 Freeway)
Since the area north of the I-210 Freeway has been more recently constructed and has recent hydrology and hydraulic studies, no new modeling for this area is proposed. Instead, simply reviewing data including the Q3 study, the 1992
MSDP, and as built plans, and including the constructed improvements in the Master Storm Drain Plan and Master
Storm Drainage Benefit Areas Map will be part of this task.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

As-built plans will be provided by the City.

Task 4.5 Master Plan Report – AOS 3 (North of the
I-210 Freeway) (Optional Task)
In addition to the work produced on Task 4.4, a full detailed Hydrology and Hydraulics study will be performed using San Bernardino County Hydrology Manual and SWMM model.

Since the Q3 study covers most of this area, the new study would include the Q3 study and the remaining areas into a comprehensive evaluation. Prioritization of the projects will be determined collaboratively with the City and DEA to develop a CIP plan.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

Only public mainline pipes larger than 18 inches will be included in this analysis
Catch Basins will not be modeled.

A prioritization memorandum and City workshop is
included.
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City of Fontana Storm
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Document Path: M:\Pursuits\F\Fontana, City of\Pursuits\2022 MPD Update\RFP Docs\Other Documents\City GIS Data\City of Fontana SD GIS Data.mxd Date: 6/7/2022 Time: 2:19:48 PM User Name: Ndz
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Service Layer Credits: Source: Esri, Maxar,
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David Evans and Associates, Inc. | June 9, 2022 | 6 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Task 4.6 Storm Drain System GIS Update (Optional
Task)
Previous tasks will include a review of existing database and gap analysis. However, during this task DEA will review record drawings to incorporate missing storm drain assets in areas not covered by previous tasks and work with The City to standardize data attributes and inputs to help maintain data quality and integrity going forward. In addition DEA will provide metadata as well as a technical memo procedures and attributes included in the database. The database
should serve as a master copy of all storm drain assets and will be made available to The City upon completion. In
addition to the database, a master basemap and AutoCAD
file will be produced from the completed data set.

Clarifications: The following clarifications/assumptions for the deliverables are included in our fee that are not listed in the RFP:

Database to incorporate all available storm drain assets from existing database, previous tasks, and record
drawings available will be prepared.

Attribute detail may vary depending on source
information provided.

All attributes and fields will be defined in the metadata.

Overall GIS Basemap and AutoCAD drawing will also be
produced.

QUALITY CONTROL
DEA’s methods and techniques for Quality Control (QC) are employed in all phases of project work to see that the quality requirements are fulfilled for our clients. Quality Assurance (QA) is integral to our culture and processes and is ingrained in each task to be properly implemented. The primary benefit to clients has been the reduction in overall cost of the project by minimizing rework and contractor change orders.

Prior to starting a project, our established QA/QC Manager Gavin Powell, will develop a QA/QC plan based upon the phases of the master plan. Gavin’s experience with two of the City’s Master Plan Updates, allows him to lay out the critical elements such as the standards and checklists to be followed for each deliverable, the person responsible to provide review of each deliverable, the phases when a quality check needs to be performed, the type of review to be performed (interdisciplinary, accuracy, etc), and where the QC documents need to be stored for auditing. For master planning, quality checks will be completed
During data gathering especially with GIS database
development
During hydrology analysis prior to commencing hydraulic analysis
Post hydraulic analysis to verify any anomalies in
modeling
During CIP development and prioritization to verify the City’s needs are being met
Prior to the Draft Report submittal to the City
Prior to the Final Report submittal to the City
The QA/QC manager’s primary role is to verify these
procedures are followed through the life of the project.

Every year, DEA performs routine audits on projects to
ensure our team is following the protocol established for our clients. Furthermore, we establish discipline experts that are independent of the project for objectivity in review.

David Evans and Associates, Inc. | June 9, 2022 | 7 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

PROJECT SCHEDULE
The following project schedule represents the work plan for the Storm Drain Master Plan Update. DEA has the staff available to complete the work as scheduled. It is DEA’s intent to do what is possible to help meet the project schedule.

The following is an outline of the key project milestones:

Begin Date End date August September October November December January February March April May June July Notice to Proceed 8/1/2022 8/1/2022 *
Task 4.1 Data Collection and Review 8/1/2022 9/19/2022
Task 4.2 Master Plan Report AOS 1 10/17/2022 1/30/2023
Task 4.3 Master Plan Report AOS 2 1/16/2023 3/20/2023
Task 4.4 Master Plan Exhibit AOS 3 3/20/2023 4/17/2023
Task 4.5 Master Plan Report AOS 3 (Optional) 4/17/2023 6/5/2023 Task 4.6 Storm Drain GIS Update (Optional) 8/1/2022 10/17/2022 City Final Review 6/5/2023 7/5/2023
Final Report 7/5/2023 7/31/2023
City of Fontana
Master Plan of Storm Drain Updage
Project Schedule
Task &
Description 20232022
Months
FEES
The fees and hours presented below include a rough estimate of the fee to meet the City's needs as presented in the RFP. To simplify the fee, we have not added any tasks to those presented in the RFP. Therefore, costs for management, meetings, and QA/QC is included in each of the tasks.

SR PM QA/QC PE EIT Intern SR GIS GIS PC ADMN Total Reim. $290 $250 $180 $140 $100 $150 $110 $130 $110 $ $

4.1 Data Collection and Review 20 4 96 96 8 8 24 0 13 43,590$

4.2 Master Plan Report - AOS 1 44 37 161 256 40 2 16 0 20 95,090$

4.3 Master Plan Report - AOS 2 38 27 121 148 32 2 4 0 20 66,410$

4.4 Master Plan Exhibit - AOS 3 21 9 61 48 0 2 2 0 19 28,650$ ODC 2,000$

4.5 Master Plan Report - AOS 3 18 29 76 172 64 2 4 0 8 58,250$

4.6 Storm Drain System GIS Update 0 0 6 24 240 48 240 0 0 62,040$ ODC 1,000$
141 106 521 744 384 64 290 0 80
Total Fee (Tasks + ODCs) 354,030$ 3,000$
357,030$
Please Note: All fees and scope are negotiable.

Legend:

SR PM=Senior Project Manager, PE=Project Engineer, EIT= Unregistered Civil Engineer, QA/QC=Quality Manager, SR GIS =Senior Geographic Information System Analyst, GIS=
Geographic Information System Analyst, PC=Project
Coordinator, ADMN=Administrative
City of Fontana
Master Plan of Storm Drain Update (SQ-87-DE-19-33)
Project Fee Schedule
Task &
Description

REQUIRED TASKS

OPTIONAL TASKS
David Evans and Associates, Inc. | June 9, 2022 | 8 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

RELEVANT PROJECTS
North Fontana Drainage Master Plan Study,
Fontana, California
After preparing the original City’s Master Plan of Drainage several years ago, DEA has conducted several supplemental focused drainage studies at the request of the City. DEA was tasked with evaluating the impacts resulting from two separate development projects tributary to the Hawker-
Crawford channel. The developments proposed land-uses
that were inconsistent with the City’s Master Plan of
Drainage (MPD), and also were proposing the realignment of the Hawker-Crawford channel. The City determined that as part of the EIR process for those projects, a technical drainage analysis would be necessary to evaluate these
proposed changes. DEA was retained to provide that
analysis, which included extensive project research and review of prior drainage studies and as-built drawings; a verification of previously studied drainage areas;
conducting a peer review of the hydrology studies for the two development projects in question; and performing
an alternatives analysis to assess two separate alignment scenarios presented by the City. DEA utilized previously prepared hydrology analysis and conducted an hydraulic
analysis to identify drainage improvements necessary for the two alternatives. Recommended improvements for each alternative were presented in a report format which included associated cost of implementation, hydraulic calculations, reference data, maps/exhibits for each alternative, and summary of recommendations and considerations for
the City’s use in making a determination of preferred
alternative. Relevance: This project was selected as relevant because it included a drainage master plan specific to the City of Fontana.

South Fontana Master Plan of Drainage -
Alternative Analysis for the Sierra Avenue
Detention Basin, Fontana, California
DEA was tasked with evaluating the possibility of
eliminating, relocating or reducing the size of the existing Sierra Avenue Detention Basin. With its location in a
desirable commercial corridor, the City was interested in re-purposing the basin for a more beneficial land-use. Based on hydrology analysis previously performed, DEA performed an analysis and evaluated the various alternatives. It
was quickly discovered that elimination of the basin was not viable, so DEA studied the alternatives of a partial reduced footprint, basin relocation, and also a diversion of flow alternative. Recommended improvements for each
alternative were presented in a report format which included associated cost of implementation, hydraulic calculations, reference data, maps/exhibits for each alternative, and summary of recommendations and considerations for the
City’s use in determining a preferred alternative. Relevance:

This project was selected as relevant because it included a drainage master plan and analysis of sub-area alternatives and is specific to the City of Fontana.

David Evans and Associates, Inc. | June 9, 2022 | 9 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Master Storm Drain Plan Update, Rialto,
California
For this update to the City of Rialto’s Master Storm Drain Plan, DEA used publicly available topographic data and
projected land-use from the City’s General Plan before
conducting a hydrology analysis for the entire City limits, which included a study area of over 22 square-miles. The analysis included calculations for the 10-year, 25-year, and 100-year storm events. The results of the hydrology analysis were then used to conduct an hydraulic analysis of the City’s existing street and storm drain systems. A combined carrying capacity was determined in order to
identify where system deficiencies occurred or would occur in the future. This analysis included assessment of open channels, culverts, pipes and transition structures. Once deficiencies were identified, storm drain improvements
were recommended and assigned a project identification
and priority number. Each project ID included associated pipe size(s), material, length and estimated cost of
implementation. The approach, analysis, methodology,
conclusions, and recommendations were summarized into a report format that included a narrative description, overall master drainage plan/map(s), hydrology and hydraulic
calculations, reference material and cost summary.

Relevance: This project was selected as relevant because it included a drainage master plan.

Master Plan of Drainage Update, Ontario,
California
This project was an update to the City of Ontario’s Master Plan of Drainage (MPD). As a result of significant deviation from the City’s MPD driven by several local developments, DEA was tasked with evaluating, modifying and updating
the City’s MPD to reflect the proposed changes. The
deviation consisted of re-aligning two major master planned facilities (WLKR-XII-1 and MERL-XI-1), which consists of storm drain systems ranging from 48-inch RCP to a double 10’x12’ RCB. The study area included a total of roughly 4 square-miles spread over multiple drainage areas within the City. DEA provided the engineering services to facilitate the update with scope of services including updates to
the report narrative, exhibits, hydrology and hydraulic calculations, cost estimates, summary tables, hydrology maps and appendices. Relevance: This project was selected as relevant because it included a drainage master plan. (60")
SEE SHEET 1 OF AREA III
X"
X

HYDROLOGY MAP

AREA XV

CITY OF ONTARIO

MASTER PLAN OF DRAINAGE
41951 Remington Avenue, Suite 220
Temecula ,Ca 91764
Phone: 951.294.9300 Fax: 951.294.9301
David Evans and Associates, Inc. | June 9, 2022 | 10 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update

HOURLY RATES
Rates Effective through December 31, 2022 (rates subject to annual increase) WATER AND ENVIRONMENT ENGINEERING:

Principal In Charge $312.00
Senior Project Manager $290.00
Senior Task Manager $278.00
QA / QC Manager $250.00
Project Manager $235.00
Senior Engineer $220.00
Project Engineer $180.00
Staff Engineer $155.00
Designer / EIT / CADD $140.00
Senior GIS Analyst $150.00
GIS Analyst $110.00
Project Coordinator $130.00
Administrative $110.00
SURVEY (OFFICE):

Survey Manager $250.00
Senior Survey Project Manager $230.00
Survey Project Manager $205.00
Senior Project Surveyor $190.00
Project Surveyor $170.00
Survey Analyst / Senior Survey Technician $160.00
Survey Technician / Survey CADD $140.00
FIELD SURVEY:

Per union agreement, there is a 4, 6, and 8-hour minimum charge for survey work. DEA is a signatory to the International Union of Operating Engineers Local 12. Field surveyors are therefore paid prevailing wage rates for all work performed.) 1-Person Survey Crew $185.00
2-Person Survey Crew $325.00
David Evans and Associates, Inc. | June 9, 2022 | Appendix - 1 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Rebecca Kinney, PE, CFM | Project Manager
Education
BS, Civil Engineering, 1995, California State Polytechnic University, Pomona Registration
Professional Civil Engineer, California, #58797, 1999
Certified Floodplain Manager, (19-11256), 2023
Years of Experience
26 BIOGRAPHY
Rebecca has extensive experience in all phases of
stormwater management projects including planning,
design, and construction. Her recent experience has
focused on development of Master Plans of drainage,
which focus on storm drainage facility sizing, stormwater NPDES compliance, stream stability, and floodplain
management. Her planning experience includes large
master planned communities, and municipal planning,
as well as supporting hydrologic and stormwater quality analysis as a basis for CEQA documentation. Rebecca
has prepared Water Quality Management Plans,
Stormwater Pollution Prevention Plans, and CEQA
water quality technical studies. She is experienced in
channel restoration design work including hydrologic and hydraulic modeling and PS&E work. She has also served
as a regulatory agent for the application of 404 Corps of Engineers, 401 California Regional Water Quality Control Board, and 1601/1603 California of Department of Fish
and Game permits. Key relevant projects include the
Orange County Flood Control Master Plan, Santa Ana
Storm Drain Master Plan, Watershed Action Plan for the
Santa Ana River Watershed, Rancho Mission Viejo Runoff
Management Plan, and the La Entrada Specific Plan
Flood Hazard Study.

EXPERIENCE:

Southern California Logistics Airport Drainage and Water Quality Master Plan, Victorville, California
Rebecca was the task manager for the drainage and
water quality master plans for the reuse of the former
George Air Force Base. The studies included different
hydrology and hydraulics methods based on the tributary watersheds. The areas that drained to the east to the
Mojave River used traditional modeling and used on site lot detention to minimize required backbone storm drain and to comply with Phase 2 MS4 permits. On the east
side drainages used rain on grid integrated hydrology
and hydraulics using XP SWMM to size regional flood
detention and downstream master plan facilities. Water
quality was handled by the individual parcels.

Kaiser-KFMC, Fontana, California
Rebecca was the engineer responsible for stormwater
engineering on the Kaiser Fontana campus expansion.

The effort included compliance with MS4 permits and
updating of the Zone A created by the I-10 channel
through a CLOMR and LOMR.

Riverside Groundwater Aquifer Storage and Recovery
System, San Bernardino County, California
Rebecca served as the project engineer for the
preliminary design and environmental clearance for
a rubber dam diversion on the Santa Ana River for
the purposes of groundwater recharge. The project
includes both in channel and offline recharge basins
for replenishment of the Rialto-Colton and Riverside-
Arlington Groundwater Basins. A portion of the project
includes a tie-in to the state water project line as a
method for recharging groundwater when native water is
not available. The project also involves the preparation of an EIR for the project.

Yorba Linda Master Plan of Drainage, Yorba Linda,
California
Rebecca served as project manager for the update of
Yorba Linda's Master Plan of drainage. The master
plan was customized to the City's needs, and analyzed
each of the watersheds differently based the results
of the previous master plan. This allowed the City to
spend money on more advanced modeling in a specific
area of the City with many CIP storm drain projects,
which resulted in a decrease in the amount storm drain
replacement.

Orange County Flood Control Master Plan, Orange, County, California
Rebecca served as project manager for the development
of a GIS-based ranking tool based on engineering
analyses to assist the County in the development and
prioritization of their Capital Improvement Projects (CIP).

The goal of the project was to create a living decision making and tracking tool for use by the County for CIP
planning, and public communication. The process
David Evans and Associates, Inc. | June 9, 2022 | Appendix - 2 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
included rating and ranking approximately 150 potential CIPs. Python scripting was used to automate the
evaluation and prioritization processes. A GIS web- based application was developed to either view or edit the
prioritization process.

Master Plan of Storm Drainage for North and West Santa
Ana River Tributary Areas, Anaheim, California
Rebecca served as the project manager and prepared an
updated comprehensive storm drainage master plan for
the North and West Santa Ana River tributary areas. The new plan was based on previous studies for the areas,
updated to account for current hydrology methods, new
hydrology modeling in areas without existing studies,
improvements to the storm drain/ tributary channel
systems, and the latest land use planning.

Rancho Mission Viejo Runoff Master Plans & Drainage
Design, Orange County, California
Rebecca served as project manager for the preparation
of two Runoff Master Plans, the Ranch and Drainage
Facility Design for PA-2 and PA-3, including Cow Camp
Road. The runoff management plans are an integrated
planning document that employs specialists from
traditional and innovative hydrology and hydraulics,
advanced sediment transport, GIS, and storm water
quality. The plan includes complex hydrology models of
the San Juan Creek Watershed, including Gobernadora
Canyon, channel hydraulics and sediment transport,
water quality and regional flood control basin preliminary design and storm drain master planning.

Santa Ana Storm Drain Master Plan, Santa Ana, California Rebecca served as project manager for the update to
the City’s storm drain master plan. The City has an
established drainage system with some segments over
50 years old and other segments recently constructed.

The project analyzed the main line drainage system
and prepared a hydrology study along with maps for the
entire city boundary and for individual sub-areas for 2-, 10-, 25-, and 100-year storm events. The capacity of
the existing storm drainage was evaluated to determine
system capacity sufficiency using a hydrodynamic
hydraulic model. A comprehensive list of needed storm
drainage improvements using the coupled 1D/2D XP-
SWMM hydrodynamic model.

La Entrada Drainage and Hydrology Specific Plan Studies, Coachella, California
Rebecca was the engineer responsible for the stormwater engineering. The project site includes seven regional
conveyances and coalescing alluvial fans tributary to
the Eastside Dike along the Coachella Canal (Irrigation Canal). She completed regional hydrology studies
for the 50.6 square mile watershed, and 1- and
2-dimensional flood routing analyses to support the
technical studies and identified the recommended
improvements and project mitigation measures for the
project site development. The team identified a whole
fan flood hazard management program and developed
the alignment and conceptual design for seven regional
channels through the site.

San Diego Creek Master Drainage Plan, Orange County,
California
Rebecca served as project manager responsible for
stormwater engineering and project management to
update and extend the San Diego Creek Master Plan
hydrology from the confluence with Peters Canyon Wash
to the Upper Newport Bay; a total watershed area of 120 square miles. Michael Baker’s services included review
and update of the watershed maps, rational method
analysis, hydrograph parameter development, hydrograph
analysis, and preparation of the master plan report. Fee:
$296K
Tujunga Wash Watershed Groundwater Recharge Master
Plan, Los Angeles County, California
Rebecca served as project manager responsible for
master planning services for the preparation of the
Tujunga Wash Watershed Groundwater Recharge
Project. The San Fernando Groundwater Basin, which
is a significant resource for drinking water for the City of Los Angeles, was in a state of overdraft. In order to meet current and future water demands without utilizing imported water, the County and City were seeking to
maximize groundwater recharge in the Tujunga Wash
Watershed which overlays the groundwater basin.

The first phase of the project involved determination
of the feasibility of six existing recharge or storage
projects within the Tujunga Wash. The second phase
included the development of an overall master plan
and the refinement of three new projects, which will be implemented in the next three to five years. All projects investigated economic viability, feasibility of adding
telemetry to the sites, environmental constraints, and
construction readiness.

Storm Drainage Master Plan, Buena Park, California
Rebecca served as an engineer and provided engineering
services to prepare a citywide drainage master plan.

Services included field investigations, video surveys,
storm drain mapping, hydrodynamic modeling, regulatory
compliance analysis, BMP retrofit recommendations,
geodatabase update, and master plan report preparation.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 3 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Gavin Powell, PE, LEED AP, | Quality Assurance / Quality Control Education
BS, Civil Engineering, 2000, Oregon State University
Registration
Professional Civil Engineer, California, #67187, 2004
Professional Civil Engineer, Oregon, #63117, 2021
Leadership in Environmental & Energy Design (LEED) New Construction Accredited Professional Years of Experience
22 BIOGRAPHY
Gavin has 22 years of extensive management and
hands-on civil engineering experience serving both the
public and private sectors. His experience spans all
phases of a project life-cycle including due diligence
studies, planning studies, preliminary analysis, and final engineering. Gavin has helped develop several master
plan documents for both drainage and sewer facilities.

He also manages and provides oversight for a variety
of services that include the development of street,
trail, sidewalk, parking lot, sewer, water, storm drain, and signing and striping improvement plans. He has
proven experience in preparing bid package documents
(PS&E) for public agencies, and is well versed in the
principles of roadway design, grading, drainage, water
quality (MS4) compliance, and ADA compliance. His
diverse project background gives Gavin a unique ability to balance the various considerations a project faces.

Gavin is responsible for leading computer aided drafting teams and is familiar with AutoCAD, Civil 3D, and a
variety of design programs including H20net, SewerCAD,
FlowMaster, PondPack, Bonadiman Civil Design
software, and a variety of other hydrology/hydraulic
design softwares. A long tenured employee, Gavin is well versed in DEA's QA/QC procedures and has an excellent
understanding of our team's technical capabilities.

This ensures that appropriate technical experts are
assigned review responsibilities. Combined with his own experience in preparing master plan documents, this
makes him an ideal candidate to lead QA/QC efforts for
the MSDP update.

EXPERIENCE
North Fontana Drainage Master Plan Study, Fontana,
California
After preparing the original City Master Plan of
Drainage several years ago, DEA has conducted several
supplemental focused drainage studies at the request
of the City of Fontana. Gavin was the project manager
for several of these supplemental studies, one of which was the North Fontana Drainage Master Plan Study.

DEA was tasked with evaluating the impacts resulting
from two separate development projects tributary to the Hawker-Crawford channel. The developments proposed
land-uses that were inconsistent with the City’s Master Plan of Drainage (MPD) and also were proposing the
realignment of the Hawker-Crawford channel. The
City determined that as part of the EIR process for
those projects, a technical drainage analysis would be
necessary to evaluate these proposed changes. DEA
was retained to provide that analysis, which included
extensive project research and review of prior drainage studies and as-built drawings; a verification of previously studied drainage areas; conducting a peer review of
the hydrology studies for the two development projects
in question; and performing an alternatives analysis to assess two separate alignment scenarios presented by the City. DEA utilized previously prepared hydrology analysis and conducted a hydraulic analysis to identify drainage improvements necessary for the two alternatives.

Recommended improvements for each alternative were
presented in a report format which included associated
cost of implementation, hydraulic calculations, reference data, maps/exhibits for each alternative, and summary of recommendations and considerations for the City’s use in determining of preferred alternative.

South Fontana Master Plan of Drainage - Alternative
Analysis for the Sierra Avenue Detention Basin, Fontana, California
Gavin was the project manager for the South Fontana
Master Plan of Drainage - Alternative Analysis for the
Sierra Avenue Detention Basin. DEA was tasked with
evaluating the possibility of eliminating, relocating or reducing the size of the existing Sierra Avenue Detention Basin. With its location in a desirable commercial
corridor, the City was interested in re-purposing the
basin for a more beneficial land-use. Based on hydrology analysis previously performed, DEA performed an
David Evans and Associates, Inc. | June 9, 2022 | Appendix - 4 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
analysis and evaluated the various alternatives. It was quickly discovered that elimination of the basin was
not viable, so DEA studied the alternatives of a partial reduced footprint, basin relocation, and also a diversion of flow alternative. Recommended improvements for
each alternative were presented in a report format
which included associated cost of implementation,
hydraulic calculations, reference data, maps/exhibits
for each alternative, and summary of recommendations
and considerations for the City’s use in making a
determination of preferred alternative.

Master Plan of Drainage Update, Ontario, California
Gavin served as the project manager for this update to
the City of Ontario’s Master Plan of Drainage (MPD).

As a result of significant deviation from the City’s MPD driven by several local developments, DEA was tasked
with evaluating, modifying and updating the City’s MPD
to reflect the proposed changes. The deviation consisted of re-aligning two major master planned facilities (WLKR- XII-1 and MERL-XI-1), which consists of storm drain
systems ranging from 48-inch RCP to a double 10’x12’
RCB. The study area included a total of roughly 4 square- miles spread over multiple drainage areas within the
City. DEA provided the engineering services to facilitate the update with scope of services including updates to
the report narrative, exhibits, hydrology and hydraulic calculations, cost estimates, summary tables, hydrology maps and appendices.

Master Storm Drain Plan Update, Rialto, California
Gavin served as the project manager for DEA when
completing the Master Storm Drain Plan update for the
City of Rialto. Using publicly available topographic data and projected land-use from the City’s General Plan,
DEA conducted a hydrology analysis for the entire City
limits, which included a study area of over 22 square-
miles. The analysis included calculations for the 10-
yr, 25-yr and 100-yr storm events. The results of the
hydrology analysis were then used to conduct a hydraulic analysis of the City’s existing street and storm drain
systems. A combined carrying capacity was determined
in order to identify where system deficiencies occurred or would occur in the future. This analysis included
assessment of open channels, culverts, pipes and
transition structures. Once deficiencies were identified, storm drain improvements were recommended and
assigned a project identification and priority number.

Each project ID included associated pipe size(s),
material, length and estimated cost of implementation.

The approach, analysis, methodology, conclusions,
and recommendations were summarized into a report
format that included a narrative description, overall
master drainage plan/map(s), hydrology and hydraulic
calculations, reference material and cost summary.

Old Town Front Street Drainage Rehabilitation, Temecula, California
Gavin was the project manager for this project to resolve an undesirable drainage condition along Old Town Front
Street in the City of Temecula. The project replaced
a concrete cross-gutter in Old Town Front Street with
multiple inlets and a below ground storm drain system.

DEA prepared comprehensive bid documents which
included plans, specifications, and cost estimates the
City used in bidding the project. While spanning less
than 300-feet, the below ground storm drain system
crossed numerous existing utilities including an 8-inch Eastern Municipal Water District (EMWD) sewer,
6-inch and 10-inch EMWD forcemains, a 20-inch
Rancho California Water District water line, a 30-inch
Metropolitan Water District (MWD) blow-off discharge
line, telecommunications, and gas lines. In addition, the system ran within an MWD easement, and between MWD
San Diego Pipeline 4 (97-inch) and 5 (99-inch). To avoid relocation of, or conflicts with, any existing utilities, a dual/parallel pipe system was specified allowing for
smaller diameter pipes to be used. Due to the proximity to the MWD San Diego Pipeline 4 and 5, fusion welded
High- Density Polyethylene (HDPE) pipe was specified
to achieve a watertight joint. The drainage system
incorporated a “bubbler” to allow for discharge without impacting nearby environmentally sensitive areas. A
pump system with float switch was utilized to discharge trapped water within the pipe system.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 5 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
David A. Jaffe, PhD, PE, DWRE | Hydraulics and Hydrology Modeling Education
PhD, Civil and Environmental Engineering, 2002, University of California, Irvine MS, Civil and Environmental Engineering, 2002, University of California, Irvine MS, Physical Marine Science, 1998, University of Southern Mississippi BA, Earth and Planetary Sciences, 1994, Johns Hopkins University Registration
Professional Engineer, California, 68321, 2005
Professional Engineer, Arizona, 44318, 2006
Registered Disaster Service Worker, California, SAP62634, 2006 Diplomate, Water Resources Engineer, 563, 2010
Qualified SWPPP Developer (QSD), California, C68321, 2014 Professional Engineer, Idaho, 20741, 2021
Professional Engineer, Washington, 21016896, 2021
Certificate, Fish Passage and Stream Restoration Design, Washington, FPT20-30855, 2021 Years of Experience
21 BIOGRAPHY
David has worked for more than a decade at the
intersection of water resource development, water infra- structure design, and water policy. David has focused
his technical expertise on the translation of engineering science into actionable environmental benefit. His scope has been varied both domestically and internationally.

David's long-term goals embrace the application of
water resource management and development to enable
positive social change.

EXPERIENCE:

La Colina Sediment Basins, City of Glendora, Los Angeles County, California
Dr. Jaffe is leading the constructability review of several features of the La Colina project associated with TTN
66608 & 66609. Our review has found that the original
design by others (10/28/13) oversized the basins. The
basin design was based on 100% yield of sediment
from the tributary watersheds to the basins following
LACDPW criteria as described in the 2006 Hydrology
and Sedimentation manuals. The subsequent sediment
transport modeling study by others, which also followed LACDPW criteria, illustrates the fate of sediments using a numerical model. Based on our review it appears that the following occurred: 1) the original design of the
basins was intended to be a conservative planning level effort; 2) the later analysis of the sediment yield to the project was intended to revise the basin sizing based on a more detailed analysis than was present in the original study. Dr. Jaffe is leading the redesign of the basins
based on the original conditions of approval and the
latter modeling effort. Since the modeling effort indicates that not all the sediment yielded from the watershed
reaches the project site the basin design is reduced by approximately 75% of the preliminary design.

Planning Level Technical Study Cahuilla Band of Indians Roadway Culvert Improvements, Riverside County,
California
Dr. Jaffe is leading the technical study of the hydraulic deficiency and flooding associated with the Section
404 funded project. The project has been contracted
to the Cahuilla Band of Indians to perform a hydrology
and hydraulics planning level technical study within
the Cahuilla Tribal lands. Overall, the Tribal Council is seeking to evaluate the hydraulic conveyance of select
roadways and culvert locations from 18 roadways and
approximately 50 roadway culvert crossings and identify areas that would benefit from improvements to reduce
local flooding. In February 2019, approximately 21
roadways and culvert locations within the Cahuilla
Band of Indians reservation were subject to damage
from severe storms, flooding, landslides, and mudslides (DDR4423DR). The Tribe will be receiving funds
from FEMA to mitigate these damages for tribal roads
David Evans and Associates, Inc. | June 9, 2022 | Appendix - 6 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
and culvert locations under Section 404 Hazard
Mitigation Grants. Select BIA roadways and culvert
location will receive emergency relief funding through
a separate FHWA grant. Details of the damaged areas
are summarized in FEMA Disaster #4423DR Damage
Descriptions and Dimensions, dated 9.30.19 ). The
Tribe subsequently is planning to complete the projects with a Construction Manager/General Contractor (CMGC)
delivery method. Prior to completion of drainage and
roadways improvements, the Tribe is requesting the
services of the project team to complete a hydrology
and hydraulics evaluation study for the Tribal roadways and culvert locations and BIA roadways and culvert
locations. Analysis was completed with rain-on-grid
two-dimensional numerical modeling of the tributary
watershed. Existing and draft proposed conditions are
studied at the planning level appropriate for Section 404 projects.

Avenue 50 Extension, Coachella, California
The project provided design services for a project to
connect existing Avenue 50 at Fillmore Road to the
proposed Avenue 50 Interchange on Interstate 10. Once
connected to the I-10 interchange, this stretch of Avenue 50 will provide essential access and regional circulation to the City of Coachella from the East. Additionally,
the Avenue 50 project will facilitate the necessary
infrastructure, including utilities corridors, for the La Entrada Specific Plan. The project includes the design
of approximately 7,200 linear feet of six-lane arterial roadway with NEV and bike lanes. Dr. Jaffe served as
the technical lead and lead modeler (hydrology, 2D
hydraulics, and bridge and hydraulic structures).

Interstate 10/Avenue 50 Interchange, Coachella,
California
The project prepared a study and report and provided
state and federal environmental documentation for the
I-10/Avenue 50 Interchange Project. The purpose of
the project is to relieve forecasted congestion on I-10 and S.R. 86, including the Dillon Road interchanges.

The interchange improvements will provide a new
gateway into the city and improve access to I-10 for
vehicles traveling in and out of the city. The project
team prepared the project report; new connection report; environmental documentation; geometric approval
drawings; design exceptions fact sheets; and plans,
specifications, and estimates (PS&E). Dr. Jaffe served as the technical lead and lead hydraulic modeler.

Belmont Creek Flood Management Plan, San Mateo
County, California
The project is developing a comprehensive Flood
Management Plan for the Belmont Creek watershed
from Twin Pines Park to Industrial Road. The Flood
Management Plan will screen, combine, and prioritize
alternatives for hydraulic modeling that include green
infrastructure and stormwater capture. The Flood
Management Plan will establish implementable and
community supported flood risk reduction measures.

The implementation plan incorporates preliminary
designs of alternatives, scheduling, cost estimates,
and high-level summary of regulatory requirements,
considering environmental constraints that might impact or potentially cause lengthy delays for environmental
permitting. The project will also identify a funding
strategy that describes the source and schedule for
implementing these alternatives. Dr. Jaffe served as the technical lead and lead modeler (2D hydraulics).

Alluvial Fan Hydraulic and Sediment Analysis, Inyo
County, California
Led watershed sediment yield, fan yield, and two-
dimensional hydraulic analysis of an alluvial fan in
eastern, central California. The purpose of the study was to determine the extent of sediment delivery to the fan toe, both historically and during the design event. The project driver was the inundation of road and highway
bridge by sediment during sub-design level events at
the toe of the fan. Analyses included multiple steps
and combined methods to deal with a broad variety
of uncertainty, both in available data and in analytic
procedures. Two methods of watershed sediment yield
(MUSLE and ACOE[Tatum]) were combined to determine
a range of yield values for long-term and single event
discharges. The historical discharges were developed
for the fan apex using both gage and NOAA atlas data
sets, including corrections for snow melt and monsoonal events. Two-dimensional modeling was conducted of
the fan surface, and to resolve questions of fan feeder channel avulsion, a series of additional analyses were
conducted. These analyses included geomorphic
(Lancaster et al. 2012), statistical hydraulics (French et al. 1996), and empirical hydraulics (Leopold & Wolman
1957; Dowdy 1979). Sediment transport analyses of fan
channels were conducted using SAM and HEC-RAS.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 7 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Rianne Okamoto, EIT | Hydrology and Hydraulics Modeling Education
BS, Civil Engineering, 2018, California State Polytechnic University Registration
Engineer-In-Training, CA #162501, 2017
Professional Civil Engineer, OR#100192PE, 2022
Years of Experience
6 BIOGRAPHY
Rianne Okamoto serves as an engineer-in-training who
has experience in surface water management. She has
extensive knowledge of local and regional hydrologic
methodologies and analysis. Her experience comes from
developing runoff management plans which include
hydrology, hydraulics, sediment transport and report
preparation. Her computer modeling skills include
the application of HEC-RAS (River Analysis System),
Advanced Engineering Software (AES) for hydrologic
analysis in Southern California, Bentley PondPack for
complex basin modeling and HEC-6T for sediment
transport models.

EXPERIENCE
Rancho Mission Viejo Runoff Management Plans, Orange
County, California
Rianne was responsible for hydrology, hydraulic modeling and, flood analysis for Planning Areas 3 & 4. The
program includes complex hydrology models of the
San Juan Creek Watershed and Gobernadora Canyon,
channel hydraulics, sediment transport, water quality
and regional flood control basin preliminary design
and storm drain master planning. The PA ROMPs are
comprehensive watershed planning documents that
fulfill both the Ranch Plan Environmental Impact Report (EIR) requirements and current Water Quality NPDES
requirements. The program includes integration of flood control, water quality, and stream stability for Chiquita Canyon, Gobernadora Canyon, and San Juan Creek.

Yorba Linda Master Plan of Drainage, Yorba Linda,
California
Rianne was responsible for QA/QC for the hydrology
map and calculations. The project intent was to provide drainage planning management for the City. The
hydrology ad hydraulics modeling was completed using
GIS and XPSWMM.

Dominguez Channel Watershed Study, Los Angeles
County, California
Rianne was responsible for data collection and
compilation of the GIS data. The purpose of the study
is to evaluate the hydraulic capacity of the existing
levees along the channel and to identify deficiencies in the Federal Emergency Management Agency (FEMA)
requirements. The watershed study included collection
of data using as-built drawings and field reconnaissance, updating drainage information using GIS, performing
hydrology and hydraulic analysis and developing a
technical report and presentation.

Hesperia A-04 Storm Drain Hydrology and Preliminary
Basin Design, San Bernardino, California
Rianne was responsible for hydrology and preliminary
basin design. Provided preliminary basin design after
determining the constraints for the downstream outlet,
storage capacity and non-jurisdictional status. The basin consisted of an approximately 80 ac-ft foot basin meant to provide local and regional retention for the City of Hesperia.

Osage Dam Breach and Inundation Mapping, Multiple
Counties, Missouri
Rianne was responsible for a 2D HEC-RAS dam
inundation analysis and inundation mapping. Provided
engineering services to update the dam breach analysis, prepare new inundation maps, and provide digital format inundation limits.

Lower Peters Canyon Basin Analysis, Orange County,
California
Rianne was responsible for hydrology, basin analysis,
documentation of the analysis. The intent of the study
was to determine current storage capacity and freeboard as it relates to Division of Safety of Dams criteria. The current basin varies from the original basin design due to growth of vegetation and sediment deposition. Various alternative methods were assessed to determine the
current capacity of the basin.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 8 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Michael Becerra, EIT | Engineering Designer
Education
BS, Civil Engineering, Cal State Long Beach, 2014
Registration
Engineer-in-Training, 2/6/2014, California, 151952
Years of Experience
8 BIOGRAPHY
Michael Becerra is a staff engineer at DEA with
experience, specializing in the design and modeling of
complex storm water drainage systems, hydrology, and
water quality. He has experience in the production of
design drawings, which include storm drain, sewer, water and site grading. Michael has a working knowledge in
site design grading.

EXPERIENCE
North Fontana Drainage Master Plan Study, Fontana,
California
After preparing the original City’s Master Plan of
Drainage several years ago, DEA has conducted several
supplemental focused drainage studies at the request
of the City of Fontana. DEA was tasked with evaluating
the impacts resulting from two separate development
projects tributary to the Hawker-Crawford channel.

The developments proposed land-uses that were
inconsistent with the City’s Master Plan of Drainage
(MPD), and also were proposing the realignment of the
Hawker-Crawford channel. The City determined that as
part of the EIR process for those projects, a technical drainage analysis would be necessary to evaluate these
proposed changes. DEA was retained to provide that
analysis, which included extensive project research and review of prior drainage studies and as-built drawings; a verification of previously studied drainage areas;
conducting a peer review of the hydrology studies for the two development projects in question; and performing
an alternatives analysis to assess two separate alignment scenarios presented by the City. DEA utilized previously prepared hydrology analysis and conducted an hydraulic
analysis to identify drainage improvements necessary
for the two alternatives. Recommended improvements
for each alternative were presented in a report format
which included associated cost of implementation,
hydraulic calculations, reference data, maps/exhibits
for each alternative, and summary of recommendations
and considerations for the City’s use in making a
determination of preferred alternative. Michael performed hydrology and hydraulic calculations that supported the MPD revision. Additionally, Michael produced exhibits
that supported the design alternatives for the proposed channel.

South Fontana Master Plan of Drainage - Alternative
Analysis for the Sierra Avenue Detention Basin, Fontana, California
After preparing the original City’s Master Plan of
Drainage several years ago, DEA has conducted several
supplemental focused drainage studies at the request of the City of Fontana. DEA was tasked with evaluating the possibility of eliminating, relocating or reducing the size of the existing Sierra Avenue Detention Basin. With its location in a desirable commercial corridor, the City was interested in re-purposing the basin for a more beneficial land-use. Based on hydrology analysis previously
performed, DEA performed an analysis and evaluated
the various alternatives. It was quickly discovered that elimination of the basin was not viable, so DEA studied the alternatives of a partial reduced footprint, basin
relocation, and also a diversion of flow alternative.

Master Plan of Drainage Update, Rialto, California
For this update to the City of Rialto’s Master Storm
Drain Plan, DEA used publicly available topographic
data and projected land-use from the City’s General
Plan before conducting a hydrology analysis for the
entire City limits, which included a study area of over 22 square-miles. The analysis included calculations
for the 10-year, 25-year, and 100-year storm events.

The results of the hydrology analysis were then used
to conduct a hydraulic analysis of the City’s existing
street and storm drain systems. A combined carrying
capacity was determined in order to identify where
system deficiencies occurred or would occur in the
future. This analysis included assessment of open
David Evans and Associates, Inc. | June 9, 2022 | Appendix - 9 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
channels, culverts, pipes and transition structures. Once deficiencies were identified, storm drain improvements
were recommended and assigned a project identification
and priority number. Each project ID included associated pipe size(s), material, length and estimated cost of
implementation. The approach, analysis, methodology,
conclusions, and recommendations were summarized
into a report format that included a narrative description, overall master drainage plan/map(s), hydrology and
hydraulic calculations, reference material and cost
summary. Michael performed the hydraulic calculations
that supported the MPD revision. Additionally, Michael
produced relevant exhibits that supported the storm drain facilities locations and sizing.

The study area included a total of roughly 4 square-
miles spread over multiple drainage areas within the
City. DEA provided the engineering services to facilitate the update with scope of services including updates to
the report narrative, exhibits, hydrology and hydraulic calculations, cost estimates, summary tables, hydrology maps and appendices. Michael provided the updates,
which included hydrologic, hydraulic and cost estimate
calculations. Michael also provided revisions to the MPD exhibits.

I-15 Logistics Center, Fontana, California
Michael served as staff engineer for the plan production and storm drain design on this logistics center project.

Caprock Partners has chosen DEA to provide civil
engineering, survey, mapping, and traffic services
for their 1,175,720 square foot “high-cube” logistic
warehouse located on approximately 76 acres. The
Logistic Site is part of an annexation of 149 acres
located in unincorporated San Bernardino County to the
City of Fontana, subsequent to the approval of the EIR.

This project is located at the base of the lower slopes of the San Gabriel Mountains, which will be receiving bulk offsite flows of 820 CFS during a 100 year storm that
will be captured and by-passed through the project site.

The project scope also includes the realignment of 4,400 linear feet of Lytle Creek Road, from the westerly project edge of the Logistic Site to a new intersection with Sierra Avenue, along with the design of an onsite sewer lift
station, which will tie into the gravity sewer system in Sierra Avenue. The current sewer main in Sierra Avenue
north of I-15 is dry, so DEA will be designing roughly
1000’ of sewer in Sierra Avenue to connect to an active sewer line south of the project site. This will be the
third industrial project that DEA works on for Caprock
Partners.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 10 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Nick Zamarripa, PE | MPD Documentation and CIP
Education
BS, Civil Engineering, Loyola Marymount University,2012 MS, Civil Engineering: Emphasis in Water Resources, Loyola Marymount University, 2014 Registration
Professional Civil Engineer, 12/15/2016, California, 86476 Years of Experience
8 BIOGRAPHY
Nick has over eight years of experience working on
public improvement and private development projects
in Southern California. He has worked on small and
large storm drain master plans as well as designing
backbone systems for master planned communities. Nick
has extensive knowledge in hydrologic and hydraulic
modeling for agencies in the region including complex
1-dimensional and 2-dimensional modeling in HEC-RAS
and SWMM. He has a strong background in storm drain,
channel, and levee design including final preparation
of construction bid packages (PS&E). His project
experience has led him to work with regulatory agencies such as FEMA, the US Army Corps of Engineers, and
California Department of Fish and Wildlife, balancing
environmental impacts of designs with cost feasible
solutions.

EXPERIENCE
Master Plan of Storm Drainage for North and West Santa
Ana River Tributary Areas, Anaheim, California
Served as an engineer preparing an updated
comprehensive storm drainage master plan for the
North and West Santa Ana River tributary areas. The
new plan was based on previous for studies for areas,
updated to account for current hydrology methods, new
hydrology modeling in areas without existing studies,
improvements to the storm drain/tributary channel
systems, and the latest land use planning. Performed
watershed delineation, hydrology calculations, and
storm drain capacity analyses for areas without existing data. Additional tasks included updating the City’s GIS storm drain database with current data and preparing a
networked XPSWMM model for areas of special focus.

Los Peñasquitos Watershed Drainage Master Plan, San
Diego, California
Served as an engineer preparing an updated
comprehensive storm drain master plan for the Los
Peñasquitos Watershed. The new plan included the
creation of a hydrodynamic 1D/2D PC-SWMM model
for analysis of the existing and proposed drainage
improvments. The update used data from as-built
plans, HEC-RAS models, and data gathered in the field
to fill gaps in information. Hydrology, hydraulic, and
basin routing calculations were all completed within
the complex model and georeferenced for City use in
their GIS database. A full report, maps, and training of City staff on using the PC-SWMM program to maintain
the data completed the project. Nick participated in
all aspects of the project from data entry, to hydrology and hydraulic calculations, to being one of the on-site resources to City staff during their PC-SWMM training.

Avenue 50 Extension – La Entrada Development,
Coachella, California
Served as a project engineer providing design services
for a roadway extension project to connect the existing Avenue 50 at Fillmore Road to the proposed Avenue 50
Interchange on Interstate 10. Once connected to the
I-10 Interchange, this stretch of roadway will provide
essential access and regional circulation to the City of Coachella from the East. Additionally, the project will facilitate the necessary infrastructure, including utilities corridors, for the La Entrada Specific Plan. Responsible for designing the backbone storm drain system to serve
the interim and ultimate conditions of the western
portion of La Entrada site.

Santa Ana Storm Drain Master Plan, Santa Ana, California Served as an engineer for the update to the City's storm drain master plan. The City has an established drainage system with some segments over 50 years old and other
segments recently constructed. The project analyzed the main line drainage systems and prepared a hydrology
study along with maps for the entire city boundary and
for individual sub-areas for 2-, 10-, 25-, and 100-
year storm events. Nick worked to create and update
a coupled 1D/2D XP-SWMM hydrodynamic model and
provided QA/QC of the model inputs based on as-built
data.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 11 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Melissa M. Foltz | GIS Analyst
Education
BS, Horticulture Science/Landscape Design, 2000, Montana State University Software Proficiencies
Microsoft Word, Works, Excel, PowerPoint, Outlook, Adobe Photoshop, Illustrator, InDesign, Acrobat, WordPress, AutoCAD, and ArcGIS
Years of Experience
22 BIOGRAPHY
Melissa is a graphic specialist/GIS analyst with 22 years of experience. Since joining DEA, she has had experience working with projects in energy, environmental, planning, and transportation. She has utilized multiple software
platforms (AutoCAD, ArcGIS, Adobe, etc.) to create,
edit, analyze, and display data to produce easy to read graphics for both informational and presentation needs.

This includes graphs, flow-charts, schedules, report
graphics, report layouts, meeting presentations, public involvement displays, and project websites.

EXPERIENCE
Lebanon Storm Drainage Master Plan and West Side
Sanitary Sewer Interceptor, Lebanon, Oregon
DEA recently updated the City of Lebanon (population
17,000) 1989 Storm Drainage Master Plan (required due
to continued community growth and development). This
project included planning-level review and analysis of
the city’s existing stormwater system capacity to identify potential capacity deficiencies and system enhancements that would improve capacity of the existing system.

DEA also analyzed the city’s future stormwater system
needs, based on projected growth and development, and
identified potential capacity deficiencies (given proposed, future development scenarios), and identified system
improvement alternatives that would improve capacity
under future development scenarios. In addition, this
project developed a stormwater CIP plan for the City,
with a prioritized list of projects that address stormwater system deficiencies (existing and future)—including a
timeline to complete projects, planning-level project
costs, and an analysis of funding mechanisms and utility rates for recommended stormwater projects. The project
is nearly complete, with final completion on schedule for July 2022. Throughout this project Melissa worked with
water resource engineers to provide report graphics to be included in the final deliverable.

Roadway Capital Improvement Plan (RCIP) Update,
Multnomah County, Oregon
On behalf of Multnomah County, DEA was responsible
for assisting in the update of the County’s five-year
Capital Improvement Plan in an effort to identify projects to include in the five-year horizon, a methodology for
transparently selecting projects in an equitable way,
and an easy-to-use scoring and evaluation process that
is flexible and adaptable to respond to County needs
over time. As part of the initial data collection process, DEA met with the County to define the roadways and
time periods to collect the mobile LiDAR data. Data
was collected using this method on most of the County
roads and supplemented by conventional methods.

With the critical data defined, DEA met again with the
County to help define the features and attributes to be extracted and then mapped in GIS. DEA extracted the
critical elements of the LiDAR data and processed it into a geocoded electronic format that was used in mapping
in a GIS platform. Due to the size of the project, it
was broken into three phases. This allowed decisions
at appropriate times to save on scoping and budget to
feed later phases. An example of this was that critical data collected during the project was determined during Phase 1 and then scoped for Phase 2. This process
allowed the County to have value-added input on what
data to collect, which ultimately helps the County's data and GIS department to build a dataset that can be used
for years to come. Melissa served as a GIS Analyst/
Graphic Specialist in Phase III of the RCIP Update for
Multnomah County, summarizing overall datasets and
producing an atlas to communicate Multnomah County’s
RCIP Update to the public.

David Evans and Associates, Inc. | June 9, 2022 | Appendix - 12 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
Sara T. Gilbert, GISP | GIS Manager
Education
MS, Earth Sciences (GIS), 1996, Montana State University BS, Geography, 1993, McGill University (Montreal)
Certification
Geographic Information Systems Professional (GISP), 2012 Years of Experience
25 BIOGRAPHY
Sara is a GIS project manager with 25 years of
professional experience supporting environmental, land
use, census, engineering, and transportation projects.

She utilizes ESRI ArcGIS software for geodatabase
design, modeling, spatial data analysis, CAD data
integration, LiDAR data manipulation, and mapping.

Her experience supporting a wide variety of projects,
including EISs and EAs, site suitability indices, wetland and critical habitat delineations, and risk assessments, enables her to provide efficient, effective data
management and project support. She is consistently
recognized internally and by clients for providing quality detailed maps, statistical analyses, and useful geospatial data.

EXPERIENCE:

Alderwood Tap 115kV Transmission Project, Oregon
To mitigate wildfire risks and increase system resiliency, DEA is designing a new 4.1 mile 115 kV transmission
line with distribution underbuild, switches, and
associated substation improvements for Blachy-
Lane Electric Cooperative (BLEC) from its Alderwood
Substation to the intersection of Lawrence Road and
Territorial Highway near Eugene, Oregon. BLEC is
seeking a FEMA Building Resilient Infrastructure and
Communities (BRIC) grant to support project funding.

The DEA Team is providing comprehensive grant
management, stakeholder engagement, Benefit-Cost
Analysis, survey, environmental, geotechnical, and
engineering services through design and construction
phases, including coordination with local, state, and
federal agencies regarding the BRIC application process and compliance.

West Side Sanitary Sewer Interceptor Analysis, Lebanon, Oregon
DEA is providing planning and engineering analysis
for the City of Lebanon (population 17,000) West
Side Sanitary Sewer Interceptor. DEA is reviewing the
existing sanitary sewer system capacity and identifying potential capacity, deficiencies and recommended
system alternatives that would improve capacity of
the existing system and will accommodate proposed
future development scenarios. Sara is the GIS task lead responsible for the incorporation of as-built record data and translation of sanitary sewer GIS data into an XP-
SWMM hydraulic model. She also is responsible for the
generation of anticipated sanitary sewer flows (from land use data).

Willamette Water Supply Program Preliminary Design and
Permitting, Hillsboro, Oregon
TVWD, the City of Hillsboro, and other municipalities
are collaborating to develop the mid-Willamette River
at Wilsonville as the next water supply source for their communities. The Willamette Water Supply Program
includes an expansion of the existing water treatment
plant and the construction of approximately 30 miles of pipeline and treated water storage tanks. As part of the preliminary design phase of the program, DEA prepared
a strategy to permit the program. DEA is now working
with TVWD, the City of Hillsboro, and the program’s staff to implement the permitting strategy and obtain natural resource and land use permits to support construction.

Sara serves as the task lead responsible for GIS data
development and mapping in support of wetland
delineations, wetland permitting, and mitigation planning efforts.

Hills Creek-Lookout Point Transmission Line, , Oregon
BPA acquired a partial transmission line system from
Lane County Electric Coop, in the 1950s. This project
runs approximately 26 miles from Hills Creek Reservoir, just west of Oakridge, Oregon to the Lookout Point
Dam near Lowell, Oregon. In 2013, BPA requested the
services of DEA to provide field surveying, mapping, and legal descriptions for approximately 160 access road
acquisition documents, and public road approach and
crossing permit documents, all in support of the rebuild design for this line. DEA prepared acquisition documents for: US Forest Service (Willamette National Forest), US Army Corps of Engineers, Union Pacific Railway, various David Evans and Associates, Inc. | June 9, 2022 | Appendix - 13 Proposal No. SQ-87-DE-19-33 for Design Services of
Master Plan of Storm Drain Update
private lands, and timberland companies. DEA also
produced Hybrid plan and profile maps and updated
them with the rebuild design and new acquisition
mapping, for the first 5 miles, and produced brand
new plan and profile maps for 19 miles, due to the
inaccuracies of the record information that BPA had
received from Lane County Electric when it acquired the existing line. Sara served as a GIS analyst on this project.

South Cooper Mountain Concept Plan, Beaverton, Oregon
DEA provided the natural resources and infrastructure
analysis and planning elements for the multi-discipline team charged with creating an integrated concept plan
for three areas that were added to the Portland Metro
Urban Growth Area. Sara worked with the team to
develop water, wastewater collection, and stormwater GIS data that could be integrated with the service providers existing datasets. The Concept Plan was the first step
to laying out the new growth that occurred following
Oregon’s land use requirements. DEA was responsible
for coordinating with the consulting team as well as with the service providers, including the City of Beaverton, Clean Water Services, Tualatin Valley Water District,
City of Hillsboro, and Washington County, on the topics of provision of drinking water, wastewater collection,
and stormwater quality and quantity management. The
plan also coordinated with initial siting of the 20- to 40-MG water storage facility for the TVWD Willamette
Supply System. In addition, the firm was responsible for planning the stormwater elements of the Concept Plan.

Oregon Passenger Rail EIS Project, for ODOT, Oregon
The federally designated Pacific Northwest High Speed
Intercity Passenger Rail Corridor (PNWRC) has been
the subject of high-speed passenger rail planning and
implementation strategies for more than 30 years. The
corridor serves the most densely populated regions of
British Columbia, Washington, and Oregon, linking
Vancouver, B.C.; Seattle; Portland and Eugene, Oregon,
with growing intermediate communities, including the
capital cities of Oregon and Washington. Under this
project, ODOT is in the process of preparing the Corridor Investment Plan (CIP) for the Oregon Segment from
Eugene to the Oregon/Washington border. As the GIS
project manager, Sara and her team developed natural
resource and socioeconomic datasets for this 466-mile
corridor to analyze the potential impacts of the various routes. Posters, maps, and an ArcGIS Online website
were created to support public meetings.

Upper Klamath Basin Water Management and Drought
Contingency Planning, Klamath Tribes, Oregon
As GIS project manager, Sara created a geodatabase to
house and integrate hydrologic, irrigation, vegetation, and terrain data received from multiple sources. Three
tools were developed using ArcGIS model-builder to
rank lands by potential for conversion to upland grazing, pasture renovation of bottomlands and uplands, riparian pasture establishment, and juniper management. The
deliverables for this project included acreage estimates, GIS thematic layers, and maps created in support of
the hydrological, water use and allocation, and land
management technical reports.

Fontana City CouncilSeptember 13, 2022

Fontana City Council
September 13, 2022