HomeMy WebLinkAboutAgenda Packet - Engineering & Operations Committee - 03/27/2023ENGINEERING & OPERATIONS COMMITTEE
MARCH 27, 2023
East Valley Water District was formed in 1954 and provides water and wastewater services to
103,000 residents within the cities of San Bernardino and Highland, and portions of San
Bernardino County.
EVWD operates under the direction of a 5member elected Board.
COMMITTEE MEMBERS
Phillip R. Goodrich
Governing Board Member
James Morales Jr.
Governing Board Member
Engineering & Operations Committee Meeting
March 27, 2023 1:30 PM
31111 Greenspot Road, Highland, CA 92346
www.eastvalley.org
PLEASE NOTE:
Materials related to an item on this agenda submitted to the Board after distribution of the
agenda packet are available for public inspection in the District’s office located at 31111
Greenspot Rd., Highland, during normal business hours. Also, such documents are available
on the District’s website at eastvalley.org and are subject to staff’s ability to post the
documents before the meeting.
Pursuant to Government Code Section 54954.2(a), any request for a disabilityrelated
modification or accommodation, including auxiliary aids or services, that is sought in order
to participate in the above agendized public meeting should be directed to the District Clerk
at (909) 8854900 at least 72 hours prior to said meeting.
CALL TO ORDER
PLEDGE OF ALLEGIANCE
ROLL CALL OF BOARD MEMBERS
PUBLIC COMMENTS
Any person wishing to speak to the Board of Directors is asked to complete a Speaker Card
and submit it to the District Clerk prior to the start of the meeting. Each speaker is limited to
three (3) minutes, unless waived by the Chairman of the Board. Under the State of California
Brown Act, the Board of Directors is prohibited from discussing or taking action on any item
not listed on the posted agenda. The matter will automatically be referred to staff for an
appropriate response or action and may appear on the agenda at a future meeting.
APPROVAL OF CONSENT CALENDAR
All matters listed under the Consent Calendar are considered by the Board of Directors to be
routine and will be enacted in one motion. There will be no discussion of these items prior to
the time the board considers the motion unless members of the board, the administrative staff,
or the public request specific items to be discussed and/or removed from the Consent
Calendar.
1.Consider approval of the January 23, 2023 Engineering and Operations Committee
Minutes
INFORMATIONAL ITEMS
2.2013 Energy Efficiency Project Update
3.Total Dissolved Solids and Water Recycling
REPORTS
4.Engineering Updates
Water Supply Dashboard
5.Operations Update
Sterling Main Leak
ADJOURN
ENGINEERING & OPERATIONS COMMITTEEMARCH 27, 2023East Valley Water District was formed in 1954 and provides water and wastewater services to103,000 residents within the cities of San Bernardino and Highland, and portions of SanBernardino County.EVWD operates under the direction of a 5member elected Board.COMMITTEE MEMBERS
Phillip R. Goodrich
Governing Board Member
James Morales Jr.
Governing Board Member
Engineering & Operations Committee Meeting
March 27, 2023 1:30 PM
31111 Greenspot Road, Highland, CA 92346
www.eastvalley.org
PLEASE NOTE:
Materials related to an item on this agenda submitted to the Board after distribution of the
agenda packet are available for public inspection in the District’s office located at 31111
Greenspot Rd., Highland, during normal business hours. Also, such documents are available
on the District’s website at eastvalley.org and are subject to staff’s ability to post the
documents before the meeting.
Pursuant to Government Code Section 54954.2(a), any request for a disabilityrelated
modification or accommodation, including auxiliary aids or services, that is sought in order
to participate in the above agendized public meeting should be directed to the District Clerk
at (909) 8854900 at least 72 hours prior to said meeting.
CALL TO ORDER
PLEDGE OF ALLEGIANCE
ROLL CALL OF BOARD MEMBERS
PUBLIC COMMENTS
Any person wishing to speak to the Board of Directors is asked to complete a Speaker Card
and submit it to the District Clerk prior to the start of the meeting. Each speaker is limited to
three (3) minutes, unless waived by the Chairman of the Board. Under the State of California
Brown Act, the Board of Directors is prohibited from discussing or taking action on any item
not listed on the posted agenda. The matter will automatically be referred to staff for an
appropriate response or action and may appear on the agenda at a future meeting.
APPROVAL OF CONSENT CALENDAR
All matters listed under the Consent Calendar are considered by the Board of Directors to be
routine and will be enacted in one motion. There will be no discussion of these items prior to
the time the board considers the motion unless members of the board, the administrative staff,
or the public request specific items to be discussed and/or removed from the Consent
Calendar.
1.Consider approval of the January 23, 2023 Engineering and Operations Committee
Minutes
INFORMATIONAL ITEMS
2.2013 Energy Efficiency Project Update
3.Total Dissolved Solids and Water Recycling
REPORTS
4.Engineering Updates
Water Supply Dashboard
5.Operations Update
Sterling Main Leak
ADJOURN
ENGINEERING & OPERATIONS COMMITTEEMARCH 27, 2023East Valley Water District was formed in 1954 and provides water and wastewater services to103,000 residents within the cities of San Bernardino and Highland, and portions of SanBernardino County.EVWD operates under the direction of a 5member elected Board.COMMITTEE MEMBERSPhillip R. GoodrichGoverning Board Member James Morales Jr.Governing Board MemberEngineering & Operations Committee MeetingMarch 27, 2023 1:30 PM31111 Greenspot Road, Highland, CA 92346www.eastvalley.orgPLEASE NOTE:Materials related to an item on this agenda submitted to the Board after distribution of theagenda packet are available for public inspection in the District’s office located at 31111Greenspot Rd., Highland, during normal business hours. Also, such documents are availableon the District’s website at eastvalley.org and are subject to staff’s ability to post thedocuments before the meeting.
Pursuant to Government Code Section 54954.2(a), any request for a disabilityrelated
modification or accommodation, including auxiliary aids or services, that is sought in order
to participate in the above agendized public meeting should be directed to the District Clerk
at (909) 8854900 at least 72 hours prior to said meeting.
CALL TO ORDER
PLEDGE OF ALLEGIANCE
ROLL CALL OF BOARD MEMBERS
PUBLIC COMMENTS
Any person wishing to speak to the Board of Directors is asked to complete a Speaker Card
and submit it to the District Clerk prior to the start of the meeting. Each speaker is limited to
three (3) minutes, unless waived by the Chairman of the Board. Under the State of California
Brown Act, the Board of Directors is prohibited from discussing or taking action on any item
not listed on the posted agenda. The matter will automatically be referred to staff for an
appropriate response or action and may appear on the agenda at a future meeting.
APPROVAL OF CONSENT CALENDAR
All matters listed under the Consent Calendar are considered by the Board of Directors to be
routine and will be enacted in one motion. There will be no discussion of these items prior to
the time the board considers the motion unless members of the board, the administrative staff,
or the public request specific items to be discussed and/or removed from the Consent
Calendar.
1.Consider approval of the January 23, 2023 Engineering and Operations Committee
Minutes
INFORMATIONAL ITEMS
2.2013 Energy Efficiency Project Update
3.Total Dissolved Solids and Water Recycling
REPORTS
4.Engineering Updates
Water Supply Dashboard
5.Operations Update
Sterling Main Leak
ADJOURN
Agenda Item
#1
March 27, 20231
Meeting Date: March 27, 2023
Agenda Item #1
Consent Item
Regular Meeting
TO: Committee Members
FROM: Director of Engineering & Operations
SUBJECT: Consider approval of the January 23, 2023 Engineering and Operations
Committee Minutes
RECOMMENDATION
That the Engineering & Operations Committee approve the January 23, 2023 meeting
minutes.
AGENCY GOALS AND OBJECTIVES
II - Maintain a Commitment To Sustainability, Transparency, and Accountability
A. Practice Transparent and Accountable Fiscal Management
B. Utilize Effective Communication Methods
FISCAL IMPACT
There is no fiscal impact associated with this agenda item.
Respectfully submitted:
________________
Jeff Noelte
Director of Engineering and Operations
ATTACHMENTS
Draft January 23, 2023 minutes.
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DRAFT
EAST VALLEY WATER DISTRICT January 23, 2023
ENGINEERING & OPERATIONS COMMITTEE MEETING
MINUTES
Ms. Van Meter called the meeting to order at 2:30 p.m., Director Morales led the flag salute.
PRESENT: Directors: Goodrich, Morales
ABSENT: None
STAFF: Michael Moore, General Manager/CEO; Jeff Noelte, Director of
Engineering and Operations: Patrick Milroy, Operations Manager; Rocky
Welborn, Water Reclamation Manager; Brenda Van Meter,
Administrative Assistant
GUEST(s): None
PUBLIC COMMENTS
There being no written or verbal comments, the public participation section was closed.
APPROVE THE NOVEMBER 28, 2022, ENGINEERING AND OPERATIONS
COMMITTEE MEETING MINUTES
Directors Goodrich and Morales recommended that the minutes be approved as submitted.
14TH STREET WATER MAIN PROJECT
Mr. Milroy provided an update on 14th Street Water Main Project that was completed by
Operations staff.
Mr. Milroy stated that the water main was originally owned by Southern California Water
Company, which was acquired by the District. The former water main was under-sized
compared to current District standards with a four-inch main, which was replaced by a six-
inch main. The District replaced the old main with 495 feet of new six-inch ductile iron pipe.
In addition, they added two new gate valves to provide easier access for repairs and installed
two new fire hydrants.
Operations staff coordinated with the Public Affairs staff to notify the affected and nearby
residents of work being completed in the area. Notifications were sent in both English and
Spanish.
Mr. Milroy noted that District staff has experience in these types of jobs, which allowed for
the project to be accomplished in-house. He also stated that newer staff is being trained to
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capture the knowledge of the District’s more experienced staff. The District’s goal is to
complete two to three main replacement jobs per year as the District identifies infrastructure
that requires replacement.
Directors Goodrich and Morales recommended that the 14th Street Water Main Project be
presented to the Board for informational purposes. Michael Moore agreed and said the item
would be placed in the February meeting schedule.
STERLING NATURAL RESOURCES CENTER (SNRC) SUPPORT SERVICES UPDATE
Mr. Welborn provided a presentation regarding SNRC and the plans in place for the plant to
go online. He noted that third-party services will be needed to ensure proper management
of the new facility. Existing service providers were considered as part of the planning
process.
Mr. Welborn reviewed the various chemicals that are required to ensure the plant functions
as designed.
He stated that for the plant to operate as designed, there are maintenance items for
consideration. Heavy mechanical maintenance, specialty equipment maintenance, screenings
disposal, solids residual management, source control inspections, control system support and
high voltage electrical servicing will all be required to ensure the plant runs efficiently. The
biosolids management services include hauling dewatered biosolids to Rialto for conversion
to biochar. Also, contract services will manage delivery of up to 130,000 gallons per day of
high strength organics to produce power from the on-site co-generation engines.
In addition to the maintenance services, the plant will also require software support for source
control program management and compliance reporting. The District plans to add to existing
contracts in place for SCADA and contract with other existing vendors to manage these
important aspects of software maintenance and reporting compliance.
Mr. Welborn stated that the District estimates it will require approximately 2,000 laboratory
tests annually for SNRC to comply with State regulations. The District identified several labs
that have provided testing services in the past. An RFP will be established and sent to
interested laboratories as the District approaches the time to acquire these services.
Some of the services required for plant operations have been procured and approved by the
Board, while other items will be presented to the Board for consideration, consistent with the
District’s procurement policies.
SET THE DATE AND TIME FOR HOLDING RECURRING MEETINGS
Director Morales recommended that the calendar be set for meetings to be held on the fourth
Monday of odd months of the year at 1:30 p.m. Director Goodrich agreed. Future meetings
will be set as recommended, per the newly approved calendar.
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ENGINEERING UPDATE
Mr. Noelte presented a water supply dashboard that was developed by Rocky Welborn and
Public Affairs to track water sources and conditions and was developed using links to various
data sources from local and state agencies. The charts and graphs contained within the
dashboard show comparisons of current conditions to previous years for groundwater and
State Water Project, along with the available capacity. The surface water includes a monthly
flow average, while rainfall data is shown for Northern California 8 Station, Big Bear and
Highland. The Colorado River Storage graphic shows the current condition for Lake Mead and
Powell. Additionally, the dashboard shows the water shortage stage that applies to the
District. It was noted that the water year is from October 1 to September 30. Mr. Noelte
stated that although the Bunker Hill Basin is still healthy, the groundwater levels are at
historical lows.
Directors Goodrich and Morales recommended that the dashboard be updated for
presentation at future committee meetings, and that staff consider adding a comparison in
the surface water chart.
OPERATIONS UPDATE
Patrick Milroy provided an update regarding Operations activities. He stated the following:
•The Granular Activated Carbon (GAC) project at plant 134 is in the final stages and
the ribbon cutting for the plant improvements is March 1, 2023.
•Tank rehabilitation at plant 108 is projected for completion prior to summer, possibly
by the end of May 2023.
•The stationary generator at Plant 101 that the District received a grant to purchase
has been installed and should be completed soon.
•The District is hosting a tour for Arroyo High School January 24, and January 26, 2023.
Students will be provided with an opportunity see the District’s heavy equipment fleet,
view SCADA operations, a presentation by Water Quality, Finance, IT, Engineering and
Customer Service.
ADJOURN
The meeting adjourned at 4:09 p.m.
Phillip R. Goodrich James Morales
Governing Board Member Governing Board Member
Agenda Item
#2
March 27, 20231
Meeting Date: March 27, 2023
Agenda Item #2
Informational Item
9
1
5
Regular Meeting
TO: Committee Members
FROM: Operations Manager
SUBJECT: 2013 Energy Efficiency Project Update
RECOMMENDATION
This agenda item is for informational purposes only, no action is required.
BACKGROUND / ANALYSIS
East Valley Water District (District) takes pride in enhancing and preserving the quality
of life for the community we serve. Optimizing energy efficiencies and reducing costs to
deliver water is an operational priority for the District. In November 2013, the District
contracted Honeywell to identify and implement operational energy efficiency projects.
After implementing the efficiency improvements, Honeywell would provide an annual
report for ten years identifying the energy savings. Honeywell has completed their
eighth annual report for the project.
The project cost including financing interest is $4,500,000. The project included four
energy efficiency measures:
1. SCADA upgrades to implement time-of-use pumping
2. Rehabilitate 12 inefficient pumps
3. Replacement of two 50-year-old switchgears
4. Piping upgrades to reduce pressure loss and improve reliability
The Honeywell project offered guarantees in annual energy savings to offset the
$4,500,000 investment over ten years. The eighth annual report from Honeywell was
recently verified by the District and identified cumulative energy saving of $4,303,677
over the past 8 years. Changes in energy rates have made the increase more significant
in recent years and will continue to provide the District energy savings.
The District continues to monitor the success of the project and meets with Honeywell
for the annual maintenance and verification inspections. The District is evaluating other
energy efficiency projects to further improve operational efficiency.
AGENCY GOALS AND OBJECTIVES
IV - Promote Planning, Maintenance and Preservation of District Resources
B. Enhance Planning Efforts that Respond to Future Demands
Agenda Item
#2
March 27, 20232
Meeting Date: March 27, 2023
Agenda Item #2
Informational Item
9
1
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FISCAL IMPACT
Maintenance and Verification of the Honeywell Project for fiscal year 2022-23 is
$18,651.
Respectfully submitted:
________________
Patrick Milroy
Operations Manager
ATTACHMENTS
Energy Efficiency Update Presentation
Honeywell Annual Reports
Patrick Milroy, Operations Manager
ENERGY EFFICIENCY UPDATE
March 27, 2023
HONEYWELL ENERGY EFFICIENCY PROJECT
2
November 2012 a
letter of intent
was issued to
conduct an Energy
and Operational
Efficiency Study.
November 2013
an agreement
with Honeywell
was executed to
complete the
comprehensive
Energy Efficiency
Project.
The District
entered a Lease
Purchase
agreement with
US Bank to
finance the
project. Total cost
with interest was
$4.6 million.
The project
financing is a
10-year
agreement that
guarantees an
annual energy
savings of
$483,000 to make
the loan
payments.
3
HONEYWELL ENERGY EFFICIENCY PROJECT
INCLUDED 4 CONSERVATION MEASURES
SCADA Upgrades
•Upgrade hardware to
increase communication
reliability and set up
automatic programming
to strategically pump
water during off-peak
electrical time of use
Pump Upgrades
•Replace 12 old
inefficient pumps at 37-
2, 39-3, 56-1,
108-1, 125-1, 130-1,
11A, 125, 142, 146,
146A, and 147 to
increase energy
efficiency
Switchgear Upgrades
•Replace switchgear that
is over 50 years old at
plants 24 and 33 to
ensure safety and
operational reliability
Piping Upgrades
•Install pipe upgrades at
plant 125 to increase
water supply reliability
4
The old SCADA
system called
well and booster
pumps on to fill
reservoirs via
the level
Honeywell
programed the
SCADA system
to avoid
pumping during
expensive
electrical time of
day
Prior to 2019,
the most
expensive
electrical cost
was Monday
thru Friday
12pm to 5pm
Since the
popularity of
solar the most
expensive
electrical cost is
4 pm to 9pm 7
days a week.
Avoiding 4pm to
9pm pumping
results in $$$
savings.
HONEYWELL ENERGY EFFICIENCY PROJECT
5
HONEYWELL ENERGY EFFICIENCY PROJECT
6
ANNUAL SAVINGS
$0
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
2015 2016 2017 2018 2019 2020 2021 2022
Savings Calculations Using Original Avoided Cost Rates
$483,000
Total Excess Savings of $439,677 in 2015-2022
7
$-
$500,000
$1,000,000
$1,500,000
$2,000,000
$2,500,000
$3,000,000
$3,500,000
$4,000,000
$4,500,000
$5,000,000
2015 2016 2017 2018 2019 2020 2021 2022
Guaranteed Savings Actual Savings
ANNUAL CUMULATIVE SAVINGS YEARS 1-8
8
2015
$19,349
2016
$15,620
2017
$16,089
2018
$16,571
2019
$17,068
2020
$17,580
2021
$18,108
2022
$18,651
2023
$19,211
2024
$19,787
HONEYWELL MAINTENANCE & VERIFICATION SERVICES
PLANT 125
9
PLANT 146 WELL MOTOR
10
PLANT 146 SCADA RADIOS
11
PLANT 130 BOOSTER #1 MOTOR
12
Plant 108 Drop Valve Piping Plant 108 Booster 1 Motor
Plant 125 Switchgear Plant 125-1 Booster Motor
15
EVALUATING ENERGY EFFICIENCY PROGRAMS: NEXT STEPS
•Solar
•Work with consultant to establish a feasibility study and evaluate solar options at Headquarters,
SNRC Administration building, and Treatment Plant 134
•Battery Storage
•Tesla batteries are currently in operation at Headquarters and Plant 140
•In the planning stages for Tesla batteries at Treatment Plant 134
•Batteries are provided at no cost to the District
•HVAC Improvements
•Continue diligent HVAC maintenance program and pursue cost saving improvements when available
•Pump and Motor Rehab
•Continue rigorous maintenance program, wells and booster pumps rehabilitated every 10 years,
and pursue cost saving opportunities when available
DISCUSSION
East Valley Water District
Highland, CA
Year 8 Annual Savings Report
January 2022
Annual Savings Report – Year 8 East Valley Water District
Page 2
Table of Contents
I. Executive and Savings Summary 3
Annual Energy Savings 4
Annual Site Inspections 6
II. Contact Information 8
EVWD Personnel 8
Honeywell Personnel 8
III. Energy Conservation Measures (ECM) 9
ECM Description 9
Site Specific Measurement and Verification Objectives 10
Data Collection 10
Saving Methodology & Calculations 10
Conclusion – Observations & Notes 16
Appendices 18
1. Annual Site Inspections 18
2. Technical Appendix 18
3. Acceptance Document 18
4. Financials – Contract & DO Schedules 18
Annual Savings Report – Year 8 East Valley Water District
Page 3
I. Executive and Savings Summary
Honeywell International Inc. entered into a 10-year performance contract with the
East Valley Water District (EVWD) to perform energy cost reduction measures
(ECMs) at its facilities in Highland, California.
Honeywell Building Solutions (HBS) is pleased to provide EVWD with Year 8
Annual Savings Report (ASR) assessing the energy savings for the project. This
report was generated using utility bills, equipment data logging, and analysis.
The final project acceptance document was signed on June 29, 2014, which
establishes the first performance year as November 1, 2014 to October 31, 2015.
This report covers Year 8 from November 1, 2021 to October 31, 2022.
The Energy Conservation Measures (ECMs) implemented are as follows:
ECM Category Energy Conservation Measures
1.1
Install an advanced SCADA control system and
switch to Super Off Peak (SOP) Time of Use
(TOU) Electrical rates.
2.1 Replace older well and booster pumps with
new, more efficient pumps.
2.2 Replace well pump 125, replace the hole in the
casing and install piping improvements.
Table 1– Project Energy Conservation Measures
Annual Savings Report – Year 8 East Valley Water District
Page 4
The Federal Energy Management Protocol/International Performance Measurement
and Verification Protocol (FEMP/IPMVP) Measurement and Verification (M&V)
methodology approach for each ECM is listed below in Table 2.
ECM
Number
ECM Title
M&V Approach
Years
1 & 10
1.1
Install an advanced SCADA control system and
switch to Super Off Peak (SOP) Time of Use
(TOU) Electrical rates.
Option C
2.1 Replace older well and booster pumps with new,
more efficient pumps.
Option A
2.2 Replace well pump 125, replace the hole in the
casing and install piping improvements.
Option A
Table 2– ECM M&V Options
Although the original planned M&V options were C for ECM 1 and A for ECM 2, the
savings analysis lent itself to a complete option C analysis which is to calculate
savings from utility bills. This came about due to the fact that data from the SCADA
system allowed for a complete analysis and captures savings from both ECMs
within the same data set. Therefore, the savings presented in this report shows
savings for the entire project and is not broken down into these two ECMs.
Annual Energy Savings
The estimated annual energy savings for Year 8 is summarized in Table 3 below.
ECMs #ECM
Electricity
Energy
Demand
Savings*
Total
Energy Total Energy O&M ANNUAL
DESCRIPTION
Savings
(kWh/yr) (kW)
Savings
(MBtu/Yr) Savings ($/Yr)
Savings
($/Yr) SAVINGS
1.1
Install an advanced SCADA control system and
switch to Super Off Peak (SOP) Time of Use (TOU)
Electrical rates.1,444,412 445 4,930 456,654$ -$ 456,654$
2.1
Replace older well and booster pumps with new,
more efficient pumps.551,598 110 1,883 51,850$ -$ 51,850$
2.2
Replace wellpump 125, replace the hole in the
casing and install piping improvements. 37,688 12 129 3,543$ -$ 3,543$
TOTAL SAVINGS 2,033,698 445 6,941 512,047$ -$ 512,047$
Notes
MBtu=106 Btu.
*Annual electric demand savings (kW/yr) is the sum of the monthly demand savings.
Table 3 – Estimated Year 8 Annual Energy Savings
Annual Savings Report – Year 8 East Valley Water District
Page 5
The verified annual energy savings for Year 8 is summarized in Table 4 below.
ECMs #ECM
Electricity
Energy
Total
Energy Total Energy O&M ANNUAL
DESCRIPTION
Savings
(kWh/yr)
Savings
(MBtu/Yr) Savings ($/Yr)
Savings
($/Yr) SAVINGS
1.1
Install an advanced SCADA control system and
switch to Super Off Peak (SOP) Time of Use (TOU)
Electrical rates.2,751,889 9,392 1,980,287$ -$ 1,980,287$
2.1
Replace older well and booster pumps with new,
more efficient pumps.551,598 1,883 51,850$ -$ 51,850$
2.2
Replace wellpump 125, replace the hole in the
casing and install piping improvements. 37,688 129 3,543$ -$ 3,543$
TOTAL SAVINGS 3,341,175 11,403 2,035,680$ -$ 2,035,680$
Notes
MBtu=106 Btu.
*Annual electric demand savings (kW/yr) is the sum of the monthly demand savings. Table 4 – Verified Year 8 Annual Energy Savings
ECMs 2.1 and 2.2 are based on option A and therefore the savings stay the same.
ECM 1.1 is based on utility bills analysis and water production and Well’s depths
measurements provided by EVWD.
Savings for EVWD can be calculated in different ways to show the actual ground
variables and avoided cost rates. The variables are referring to the fact that the
original saving calculations at the time of project development were based on water
production, Well depths and bills at the time. However, over time the water
production has changed and so have the well depths and utility billing ra tes.
As per the contract, Honeywell calculates the savings so as to report apple to apple
comparison and using utility rates that are actually being paid by EVWD and what
the savings are being realized compared to would-be cost if the project had not
taken place at all.
In Table 5 below, the top line (marked as USED) shows savings being realized by
EVWD using the actual utility rates at the present being paid by EVWD. The
savings are calculated adjusting for variables such as water production in the
current year, well depths affects on pumping energy and EUI utilization
adjustments.
The Option 1 line shows savings being realized by EVWD using the actual utility
rates at the present being paid by EVWD. The savings are calculated without any
adjustments. The savings are more than option USED because in current year
EVWD produced less water than in the base year and hence consumed less
pumping energy and thereby higher savings.
Annual Savings Report – Year 8 East Valley Water District
Page 6
The Option 2 line shows savings being realized by EVWD using the expected utility
rates EVWD was expected to pay in future years. The savings are calculated
adjusting for variables such as water production in the current year, well depths
affects on pumping energy and EUI utilization adjustments. The KWH savings are
same as option USED but $ savings are much less because expected utility rates in
the future were less than what they are at the current time.
The Option 3 line shows savings being realized by EVWD using the expected utility
rates EVWD was expected to pay in future years. The savings are calculated
without any adjustments. The KWH savings are more than option 2 because in
current year EVWD produced less water than in the base year and hence
consumed less pumping energy and thereby higher KWH savings. The $ savings
are much less than option 2 because expected utility rates in the future were way
less than what they are at the current time.
Baseline
(kWh/yr)
Post
(kWh/yr)
Savings
(kWh/yr) Savings ($/Yr)
USED
Savings Calculated using Contracted Avoided Cost Rates, Actual Utility Bills with
Adjustments based on Measured Water Production, Well Measurements and EUI
index.19,786,465 17,034,576 2,751,889 $1,980,287
1 Savings Calculated using Contracted Avoided Cost Rates, Actual Utility Bills without any
Adjustments.19,786,465 15,445,460 4,341,005 $2,134,066
2 Savings Calculated using Original Avoided Cost Rates, Actual Utility Bills with Adjustments
based on Measured Water Production, Well Measurements and EUI index.19,786,465 17,034,576 2,751,889 $583,179
3 Savings Calculated using Original Avoided Cost Rates, Actual Utility Bills without any
Adjustments.19,786,465 15,445,460 4,341,005 $736,958
Options Option Description
Electricity Energy
Table 5 – Various Annual Energy Savings Scenarios for ECM 1.11
Annual Site Inspections
Mustafa Abbas of Honeywell visited a few sites on July 13, 2022. During the
inspections, the team visited 10 pumping stations (11, 24, 39, 108, 125, 143, 146/A,
147 and 132). 8 of the stations were operational and 2 were off by SCADA system
calling the well stations to be on or off based on demand. Well depths were noted
for several wells.
A review of the SCADA system showed that well water accounted for 80.7% of the
water production while surface water accounted for 19.3% for the contract year for
the wells under this contract.
Below are a few pictures taken during inspections.
1 Option “USED” shows Verified savings based on higher of the actual or the contractual blended
avoided cost as outlined in the contract.
Agenda Item
#3
March 27, 20231
Meeting Date: March 27, 2023
Agenda Item #3
Informational Item
Regular Meeting
TO: Committee Members
FROM: Director of Engineering & Operations
SUBJECT: Total Dissolved Solids and Water Recycling
RECOMMENDATION
This agenda item is for informational purposes only, no action is required.
BACKGROUND / ANALYSIS
At the March 8, 2023 meeting, the Board authorized a Memorandum of Understanding
(MOU) between EVWD, San Bernardino Valley Municipal Water District (Valley District),
San Bernardino Municipal Water Department and City of Redlands to establish total
dissolved solids (TDS), or salt, mitigation commitments necessary for the Regional
Board to issue permits for the discharge of recycled water by EVWD and the other
parties for the purpose of recharging the groundwater basin. The impact of recycled
water on TDS concentrations in groundwater is relevant because recycled water has
higher TDS than the allowable level for the effected groundwater basin. The MOU
contemplates a feasibility study to identify a sustainable and cost-effective strategy for
managing the TDS in the groundwater basin, which may include a regional desalter to
remove TDS from recycled water. The strategy would also include seeking grant
funding to support TDS mitigation efforts.
The regulations associated with TDS in groundwater are important for the District and
regional water agencies that rely on the groundwater basin. A presentation will provide
perspective on typical TDS levels in water, regulations on TDS, and mitigation options
that will be evaluated. Staff will bring back to the Board the results of the study that will
be performed over the next year.
AGENCY GOALS AND OBJECTIVES
I - Implement Effective Solutions Through Visionary Leadership
A. Identify Opportunities to Optimize Natural Resources
IV - Promote Planning, Maintenance and Preservation of District Resources
A. Develop Projects and Programs to Ensure Safe and Reliable Services
Agenda Item
#3
March 27, 20232
Meeting Date: March 27, 2023
Agenda Item #3
Informational Item
FISCAL IMPACT
There is no fiscal impact associated with this agenda item.
Respectfully submitted:
________________
Jeff Noelte
Director of Engineering and Operations
ATTACHMENTS
Presentation
Total Dissolved Solids & Water
Recycling
March 27, 2023
•Total Dissolved Solids (TDS), or salinity is the concentration of dissolved mineral salts in water
•Typically in the form of:
•Sources of Dissolved Solids
•Natural weathering process in storm water runoff
•Household uses discharged to sewer
•Chemical addition at treatment plants
•Specifically, chlorine in the form of sodium hypochlorite (bleach)
•Self-regenerating water softeners
2
INTRODUCTION TO DISSOLVED SOLIDS
3
TDS OF VARIOUS WATERS
Water Type Typical TDS
(mg/L)
Santa Ana River
Water 140 -240
Imported Water 230 -330
Drinking Water 200 -500
EVWD Recycled
Water (estimated)530
Brackish Water 500 –17,000
Sea Water 35,000
Reverse Osmosis
Treated Water 25 -150
•EPA developed Maximum Containment Levels (MCLs) for drinking
water to ensure public health
4
REGULATORY REQUIREMENTS FOR TDS
Primary MCLs Secondary MCLs
Primary MCLs are standards specifically for constituents
that are immediately hazardous and selected to protect
public health.
Secondary MCLs are standards that contribute to a lack
of trust in drinking water and have potential or have the
potential to accumulate over long time periods.
•Taste
•Odor
•Smell
•Scaling/Corrosion
TDS in EVWD Water
Chemical Secondary MCL
(mg/L)Detection Level Average Level
Detected Unit of Measure Range of
Detection
Likely Source of
Contamination
Total Dissolved
Solids (TDS)1000 5 296 mg/L 170-510
Runoff/ leaching
from natural
deposits
•Indirect Potable Water Reuse (i.e., Groundwater Recharge) carries salt
from daily uses into the ground water
•State Water Resources Control Board regulates water quality for
groundwater
5
GROUNDWATER IMPACTS -REGULATIONS
Water Quality Objectives Bunker Hill A 310 mg/L
Bunker Hill B 330 mg/L*
2018 Ambient Levels
Note: Assimilative capacity is available
Bunker Hill A 330 mg/L
Bunker Hill B 280 mg/L*
•Assimilative capacity allows the discharge of a contaminant at higher
levels if the basin remains below the objective
•Elevated TDS loading over time increases TDS of groundwater basin
6
GROUNDWATER IMPACTS –TDS INCREASES
7
GROUNDWATER IMPACTS –MODEL RESULTS
•Modeled flow paths of recycled water from Weaver Basins
Legend
Active municipal well
Inactive municipal well
Monitoring well
Private well, active
Recycled Water Flow Paths
8
GROUNDWATER IMPACTS –MODEL RESULTS (CONTINUED)
•Projected TDS
Concentrations 500
550
450
400
350
300
250
1990 2010200520001995 2030202520202015 204520402035
TD
S
(
m
g
/
L
)
Treatment
Technology Description Cost Pros Cons
Reverse
Osmosis
Liquids are pushed under high
pressure through a semipermeable
membrane, reject particles are
collected on the membrane and
removed as a high strength waste
Capital
$ $ $
Ops
$ $ $
Highly Effective At
Removing TDS
Proven Track Record
High Energy Costs
Includes A Reject
Waste Stream
Ion Exchange
Liquid flows through a substrate
that will exchange molecules that
cause salinity with other non-salinity
causing molecules
Capital
$ $
Ops
$ $ $
Proven Technology
Waste Resin Disposal
Includes A Reject
Waste Stream
Frequent Media
Change Outs
9
TREATMENT OPTIONS
DISCUSSION
Water Supply Update
Northern California 8 Station
56.2 inches Updated 3/20/23
Big Bear
22.99 inches Updated 3/17/23
Annual Average: 18.5''
WATER YEAR
Highland October 1- September 30
12.91 inches Updated 3/20/23
ACRONYMS
CFS = cubic feet per second mAF = million Acre-Feet
35%
Annual Average: 11.9''
29% of Capacity
STATE WATER PROJECT
ALLOCATION
WATER SHORTAGE STAGE
STATE WATER PROJECT
Lake Mead & Powell Updated
2/28/23
DISTRICT WATER SUPPLIES
Annual Average: 53.2''
GROUNDWATER SURFACE
COLORADO RIVER STORAGE
OTHER INDICATORS
RAINFALL
Current Available CapacityAvailable Capacity Current
5.02
mAF
84% of Capacity
Bunker Hill Basin
2.92 mAF
82% of Capacity
Lake Oroville Updated 3/19/23
16.1
24.3 27.1
Santa Ana River (CFS) Updated 3/20/23
Last YearLast Year
15.5 mAF
Historic Avg
2014-2022 Monthly
Average
2023-Monthly
Flow Average