30 80 Bristol Street, #520 • Costa Mesa, California 92626 October 1, 2025
Ms. Tanya Williams
City Manager
City of Rialto
150 South Palm Avenue
Rialto, CA. 92376
SUBJECT: Proposal to Provide Additional Staffing Support Services Dear Ms. Williams,
Dopudja & Wells Consulting (Dopudja & Wells) understands that the City of Rialto is requesting a proposal to extend additional consulting support services. This proposal includes two primary areas of support as outlined below.
Scope of Work
Task 1. Additional Interim Staffing Support Related to the Utility Department As the City searched to permanently fill the Utility Manager/Director positions, Dopud ja & Wells was requested to provide additional support to the Utility Department. The City is encouraged that it has found a candidate to permanently fill the position. Dopudja & Wells will now be reducing our role as we transition responsibilities over to the permanent Utility Director. Our temporary supp ort effort covers the period from the end of our prior amendment an d is expec ted to occur through the end of February 2026. Durin g this peri od our role will progressively decrease as we transition support over to the permanent Utility Director responsibilities. Dopudja & Wells will control our work and the manner in which it is performed. During this period Dopudja & Wells will continue to have no control over the conduct of the City’s officers, employees, or agents. Dopudja & Wells will not at any time or in any manner represent that it or any of its officers, employees, or agents are in any manner officers, employees, or agents of the City. Dopudja & Wells shall not incur or have the power to incur any debt, obligation, or liability whatever against the Cit y, or bind the City in any manner. No City employee benefits shall be available to Dopudja & W ells in connecti on with the performance o f the scope of wor k pursuant to the Agreement with the City. We are proposing Mr. Stephen Dopudja an d Mr. Jason Pivovaroff will share in the primary duties of providing consulting support to the City. Additionally, the City has requested the services of Mr.
John Rossi at a reduced level, to provide finance, accounting and rate study support. Lastly, the City is experiencing a higher pace of infill/developments, predominantly in the se wer service areas. These include residential, commercial/industrial developments. As a result, additional hydraulic modeling ha s been requested beyond historic levels. All of the work in this work will be performed on an as-needed basis. Below is a table to reflect the anticipated level of support and reductions through February 2026.
Tanya Williams
October 1
, 2025
Page
2 3080 Bristol Street, #52
0 •
Costa Mesa
, California 926
26 Period
Hours Per Week
Principal
(Dopudja)
Senior/
Consultant
(Pivova
roff)
Senior/
Consultant
(Rossi)
Project Engineer
(Wells/Connnell)
Sept 2025
-
Nov 2025
16 24
16 4
Dec
2025
-
Feb 2026
8 2
0 8
4 Note: The budget also includes
approximately
8% f
o
r administrative support
and
1.5% for
reimbursable
s
.
Task
2 .
Cactus Basin
Recharge
Coordination
Through a multi
-
agency
facilitative
process, the City of Rialto
, San Bernadino Valley Water District
, West Valley
Water District, Fontana Union Water District
,
City of Colton
,
County of San Bernardino and Emhart
have begun
exploring
recharging the Rialto
-
Colton groundwater basin
through the Cactus Basin Stormwater retention
facilities.
The San Bernadino Valley Water District and the County of San Bernardin o Have
reached
several
other
recharge agreements at the County’s flood control facilities.
The cactus b
asin stormwater retention facilities
is
the final facility for such negotiations,
b
ecause of some unique challenges. Although the storm water retention
facilities
are the ideal location for recharging the Rialto
-
Co
lton groundwater basin
, perchlorate contamination
cleanup h
as
posed challenges
.
The responsible parties have expressed concern that recharging in the area would
potentially move the contamination plumes. However, the groundwater producers have
made
clear that the
purpose of groundwater basins
is for storage and production
, o
ver any cleanup
responsibilities.
The
multi
-
agency
facilitative process
is
preparing a framework for recharge t
h
rough a series of agen
cy workshops
.
Task
3 .
RHNC Prelimi
nary O&M Manual
Scheevel Engineering
has been
assisting Dopudja & Wells with modeling analysis for lake and system performance.
Flow routing and water quality modeling
have
include
d
lake hydraulics, wave action erosion potential, thermal effects, dissolved oxygen, ETo, and other water quality parameters to assist the completion of final design
and
permitting
for RHNC.
Based on the promising modeling results the United States Department of Fish and Wildlife
(USFW)
have requested some additional longer period
simulation modeling to demonstrate temperature
reductions.
Additionally
,
Scheevel Engineering is assisting Dopudja & Wells with analysis, final design and operational and maintenance planning for the RHNC project. Scheevel Engineering has
develop
ed
a preliminary Operations and
Maintenance (O&M) philosophy and
outline
based on current design, staff input and consider best practices for operations of lakes and similar basins.
The
O&M outline was distributed and reviewed with
RWS/
Veolia.
Based on the feedback of RWS/Veolia
and the requirements of USFW, the O&M outline will be
developed into a
draft O&M Manual
.
A copy of Scheevel
Engineering proposal is attached for reference.
It shoul
d also be noted that if the
ongoing modeling
under this task
demonstrates
benefit
s
to the Habitat
Conservation Plan
(HCP)
, beyond the
City of Rialto
’
s current
responsibilities
and
discharge permit, the C
ity should
consider requesting reimbursement
from the
HCP partners
for a portion of this effort.
Task
4 .
Project Management and Administration
Project management and administrativ
e
activities include coordination of project activities
with City staff,
management of internal project staff, monitoring of budget, and invoice prep
a
ration
.
Tanya Williams
October 1
, 2025
Page
3 3080 Bristol Street, #52
0 •
Costa Mesa
, California 926
26 Proposed Fee
The tasks in the Scope of Work described above will be performed on a time and materials basis , which
will
include
reimbursable mile
age
(billed at the
IRS mileage rate)
.
Monthly invoice amounts may vary, depending on
assignments. However,
Dopudja & Wells will not exceed th
e
fee
for the
total period of the engagement
without
written authorization from
the City
of Rialto
.
The proposed Task 1
through
4 fees
and anticipated schedules
are
Shown in Table 1 below.
Table 1
-
Fees for Services
Task
Description
Amount ($)
Estimated Schedule
(Months)
1 Additional Interim Staffing Related to the Utility Department
$
502,110
6 2
Cactus Basin Recharge
Coordination
$
57,
440
TBD
. Per SBVMW
D
3 RHNC Prelim
inary O&M Manual
$
199,
880
6 -
9 months
4 Project Mana
gement and Administration
$
37,700
6 Total
$
79 7,130
Note: All mileage will be billed at the current
IRS rate. All sub
-
consulting
agreements are reimbursed at cost plus 10%.
Dopudja & Wells understands the importance of this project to the City
of Rialto
, and we look forward to
assisting
the City
.
Please do not hesitate to contact Stephen Dopudja via email at [email protected]
or
at 949
-
842
-
4370 if there are any questions.
Sincerely,
Dopudja & Wells Consulting
Stephen Dopudja, P.E.
President/CEO
RCE #65187