HomeMy WebLinkAboutAgenda Packet - Engineering & Operations Committee - 01/25/2021DIAL: +1 209-425-5876 and enter CONFERENCE ID: 862 515 637#
ENGINEERING AND OPERATIONS COMMITTEE
January 25, 2021 - 2:30 PM
31111 Greenspot Road, Highland, CA 92346
In an effort to prevent the sprea d of COVID-19 and in accordance with Governor Newsom's Executive Order N-25-20 and N-29-20, this meeting is being conducted via
teleconference. There will be no public location for attending this meeting in person. Members of the public may listen and provide public comment telephonically.
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AGENDA
CALL TO ORDER
PLEDGE OF ALLEGIANCE
PUBLIC COMMENTS
NEW BUSINESS
1.Approval of November 24, 2020 Minutes
2.Plant 108 Reservoir Isolation Plan
3.Engineering Updates January 2021
ADJOURN
PLEASE NOTE:
Pursuant to Government Code Section 54954.2(a), any request for a disability-related 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)
885-4900 at least 72 hours prior to said meeting.
Page | 1
Minutes 11/24/2020 bvm
DRAFT PENDING APPROVAL
EAST VALLEY WATER DISTRICT November 24, 2020
ENGINEERING AND OPERATIONS COMMITTEE MEETING
VIA TELECONFERENCE
MINUTES
Ms. Van Meter called the meeting to order at 2:38 p.m. and Mr. Milroy led the flag salute.
PRESENT: Directors: Smith, Coats
ABSENT: None
STAFF: Jeff Noelte, Director of Engineering and Operations, Patrick Milroy,
Operations Manager; Martha Duran, Sr. Administrative Assistant;
Brenda Van Meter, Administrative Assistant; Shayla Antrim, Sr.
Administrative Assistant; Rocky Welborn, Sr. Engineer; Nathan Carlson,
Sr. Engineer
GUEST(s): None
PUBLIC COMMENTS
There being no written or verbal comments, the public participation section was closed.
APPROVE THE SEPTEMBER 28, 2020 ENGINEERING AND OPERATIONS COMMITTEE
MEETING MINUTES
The minutes for September 28, 2020 were approved by unanimous roll call vote as
submitted.
Operations Update – Leak Detection
Mr. Milroy provided information regarding the Leak Detection Survey. He stated that a few
years ago when California began dealing with the drought, the State Water Resources
Control Board began to get involved with water agencies. During the drought conditions
water agencies were asked to complete a water audit. The audit includes water losses,
water production, and billing. Mr. Milroy explained as part of the water audit, it was
recommended that water agencies conduct a leak detection survey.
For information only.
Page | 2
Minutes 11/24/2020 bvm
ENGINEERING UPDATES
Sterling Natural Resource Center (SNRC)
Mr. Noelte provided an update on the Sterling Natural Resource Center while showing a
series of construction photos. Some of the items discussed included: the headworks
structure, odor control infrastructure, the main electrical building, the concrete pedestals,
and the influent pump station. He explained that the aeration basin coating is an epoxy
system to keep the concrete from deteriorating, and that the epoxy application protects
the concrete for many years to come.
For information only.
Development Update
Mr. Noelte presented an update regarding the Mediterra and Highland Hills developments.
He stated that the Mediterra Residential development will have phase one and two built
first and that water main connection work has begun. The sewer main connection will be
constructed as part of the new street development. This will include about 150 single family
homes. He explained that the Highland Hills development planned to the East of plant 134
is moving along with the planning and design phase.
For information only.
Plant 101 Rehabilitation Update
Mr. Noelte provided an update regarding Plant 101. He stated that the reservoir does not
require any rehabilitation because it is relatively new. He explained that the hydro-
pneumatic station that boosts the pressure to the 45 homes in that area that does need
rehab. East Valley Water District has engaged an on-call engineering firm to complete the
design. He stated that the District is currently working on a grant application that would
provide a stationary generator for the facility, which would free up a portable generator
to be used for other facilities.
For information only.
ADJOURN
The meeting adjourned at 3:14 p.m.
David Smith Ron Coats
Governing Board Member Governing Board Member
Page | 1
Minutes 11/24/2020 bvm
DRAFT PENDING APPROVAL
EAST VALLEY WATER DISTRICT November 24, 2020
ENGINEERING AND OPERATIONS COMMITTEE MEETING
VIA TELECONFERENCE
MINUTES
Ms. Van Meter called the meeting to order at 2:38 p.m. and Mr. Milroy led the flag salute.
PRESENT: Directors: Smith, Coats
ABSENT: None
STAFF: Jeff Noelte, Director of Engineering and Operations, Patrick Milroy,
Operations Manager; Martha Duran, Sr. Administrative Assistant;
Brenda Van Meter, Administrative Assistant; Shayla Antrim, Sr.
Administrative Assistant; Rocky Welborn, Sr. Engineer; Nathan Carlson,
Sr. Engineer
GUEST(s): None
PUBLIC COMMENTS
There being no written or verbal comments, the public participation section was closed.
APPROVE THE SEPTEMBER 28, 2020 ENGINEERING AND OPERATIONS COMMITTEE
MEETING MINUTES
The minutes for September 28, 2020 were approved by unanimous roll call vote as
submitted.
Operations Update – Leak Detection
Mr. Milroy provided information regarding the Leak Detection Survey. He stated that a few
years ago when California began dealing with the drought, the State Water Resources
Control Board began to get involved with water agencies. During the drought conditions
water agencies were asked to complete a water audit. The audit includes water losses,
water production, and billing. Mr. Milroy explained as part of the water audit, it was
recommended that water agencies conduct a leak detection survey.
For information only.
Page | 2
Minutes 11/24/2020 bvm
ENGINEERING UPDATES
Sterling Natural Resource Center (SNRC)
Mr. Noelte provided an update on the Sterling Natural Resource Center while showing a
series of construction photos. Some of the items discussed included: the headworks
structure, odor control infrastructure, the main electrical building, the concrete pedestals,
and the influent pump station. He explained that the aeration basin coating is an epoxy
system to keep the concrete from deteriorating, and that the epoxy application protects
the concrete for many years to come.
For information only.
Development Update
Mr. Noelte presented an update regarding the Mediterra and Highland Hills developments.
He stated that the Mediterra Residential development will have phase one and two built
first and that water main connection work has begun. The sewer main connection will be
constructed as part of the new street development. This will include about 150 single family
homes. He explained that the Highland Hills development planned to the East of plant 134
is moving along with the planning and design phase.
For information only.
Plant 101 Rehabilitation Update
Mr. Noelte provided an update regarding Plant 101. He stated that the reservoir does not
require any rehabilitation because it is relatively new. He explained that the hydro-
pneumatic station that boosts the pressure to the 45 homes in that area that does need
rehab. East Valley Water District has engaged an on-call engineering firm to complete the
design. He stated that the District is currently working on a grant application that would
provide a stationary generator for the facility, which would free up a portable generator
to be used for other facilities.
For information only.
ADJOURN
The meeting adjourned at 3:14 p.m.
David Smith Ron Coats
Governing Board Member Governing Board Member
STAFF REPORT
Agenda Item #2.
Meeting Date: January 25, 2021
Discussion Item
To: ENGINEERING AND OPERATIONS COMMITTEE
From: Operations Manager
Subject: Plant 108 Reservoir Isolation Plan
RECOMMENDATION:
This report is provided to the Engineering and Operations Committee for its information only.
BACKGROUND / ANALYSIS:
The reservoir at Plant 108 is the next tank in line for a rehab of its coating system. A tank rehab priority list was
developed with the help of a consultant by performing tank diving inspections. The tank rehab is scheduled to
take place at the beginning of February and will take approximately 90 days to complete.
Plant 108 is a 2-million-gallon reservoir located in East Highland Ranch, north of Baseline Street and east of
Weaver Street. It is a unique tank at 48 feet tall, the District’s tallest tank that receives water from the Foothill
Zone and boosts water up to the higher Canal Zone. During the planning stages, before tank rehab can take
place, Operations staff must perform a shutdown test, isolating the tank from the system making sure Production
Operators are comfortable operating the system without the 2-million-gallons of storage. Fortunately, Plant 56
and 99 are tanks in the same zone and will hold sufficient storage during this project (see Exhibit 1 for detail).
This work is purposely planned during low demand months when water usage is much lower.
The tank isolation at Plant 108 starts with Production staff reviewing plant drawings to determine what valves will
need to be closed. It was determined Plant 108 can be isolated by closing just one valve on site (see Exhibit 2).
Operators much confirm the isolation valve seals completely by closing the valve and then recording the level
and pressure in the tank on site and using the SCADA system as a double check then simply wait eight hours.
After the eight-hours, the level and pressure are checked again. If no change has occurred operators are
confident no water has entered or exited the tank and the valve is sealing properly.
The next step to complete the reservoir isolation test is to determine where the water will flow if it does not have
the option to fill up Plant 108. Staff reviews distribution maps and know from experience that the water
produced in the Foothill zone will fill up the tanks at Plants 56 and 99, which have altitude valves that do not
allow them to overflow. Plant 108 acts as the vent to the Foothill zone and the tank has possibility to overflow,
which is part of the system design to prevent over pressurizing the system. If Plant 108 is offline, a different
reservoir in the same zone will have to act as the vent. Plant 99 is the best option for the new vent. To
accomplish this, Operators manually force and lock the altitude valve open so Plant 99 tank will now act as the
vent.
R ecommended b y:
P atric k K. Milro y
O peratio ns Manager
P ro d uc tion s taff recently perfo rmed a s uc ces s ful tank is o lation tes t at P lant 108. Ac c urate maps, having good
working valves , knowing ho w the sys tem works and prac tic ing the s teps are important and necessary prior to the
tank rehab ilitatio n p rojec t.
AG E N C Y G O ALS AN D OB J E C T IVE S :
G o al and O bjec tives I V - P romo te P lanning, Maintenanc e and P res ervatio n o f Dis tric t R esources
b ) Enhanc e P lanning Efforts that R es p o nd to F uture Demands
c) Ded ic ate Effo rts To ward S ys tem Maintenance and Mo d ernization
R E VIE W B Y O T HE R S :
T his agenda item has been reviewed by the executive management team.
F IS C AL IMPAC T
T here is no fis cal impac t as s o c iated with this agend a item.
ATTACH M E N TS:
Description Type
P lant 1 08 Isolatio n Graph Exhibit
P ressure Zones and P lants Exhibit
V
V
V
V
V
V
VV
VV
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
VV
V
V
VV
V
Intermediate
Upper
59 Hydro
Mercedes
Baldridge Cyn
Highland Upper
Mountain34 Hydro
Foothill
Canal
101 Hydro
Mountain
149 Hydro
Lower
PLANT125
PLANT142
PLANT129
PLANT 37
PLANT 27
PLANT 54
PLANT140
PLANT131
PLANT 11 PLANT 12
PLANT 127
PLANT147
PLANT146
PLANT143
PLANT 104
PLANT120
PLANT 108
PLANT 41
PLANT 33
PLANT 107
PLANT 24
PLANT 25
PLANT101
PLANT 134
PLANT 59
PLANT 39
PLANT 34
PLANT 40
PLANT 99
PLANT151
PLANT141
PLANT 9
PLANT149
PLANT 28
PLANT132
PLANT 148PLANT 137
PLANT 56
PLANT 152
Plant 130
/
EAST VALLEY WATER DISTRICT PLANTS AND PRESSURE ZONE MAP
0 1 20.5 Miles
LEGEND
PRESSURE ZONE
Not In a Zone
PRESSURE ZONE
59 Hydro
101 Hydro
149 Hydro
34 Hydro
Baldridge Cyn
Canal
Foothill
Highland Upper
Intermediate
Lower
Mercedes
Mountain
Upper
PLANT
TREATMENT PLANT
V NO
V YES
EVWD BOUNDARY
210 FREEWAY
Exhibit 1
BOOSTER
CAPACITY BOOSTER HP DESIGN FLOW
BOOSTER - GPM
PRESSURE ZONE
LOCATION APN SCE
ADDRESS
1312
1176
100
100
1500
1500 CANAL/FOOTHILL 0288-251-10
N. OF CREST VIEW
E. OF HILLCREST
BOOSTERS PLANT
P108 - 1
P108 - 2 108
CREST VIEW LANE CL
PLANT 108 RESERVOIR
2,000,000 GALLONS
PAD ELEV. = 1662'
OVERFLOW = 47.5'
DIAMETER = 84'
Curb & Gutter
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16" D.I.P.
20" D.I.P.Foothill Zone
P.F.H.
Storm Drain
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16"G.V.(3)
16" Propeller
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16" B.F.V.
16" B.F.V.12" G.V.
16" B.F.V.(4)
12" Stl. to Canal Zone
16" C.M.L.&C. From F
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Bollards
Air & Vac
8" G.V. (2)
8" Cla-Val
8" Cla-Val
P108-2
P108-1
8" B.F.V.(4)
4"
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6" G.V.
4" G.V.
4" Propeller
Flowmeter
4" Stl.
6" Stl.
12" x 6" Reducer
6" x 4" Reducer
6" x 4" Reducer
Gate
Driveway
Storm D
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Exhibit 2
STAFF REPORT
Agenda Item #3.
Meeting Date: January 25, 2021
Discussion Item
To: ENGINEERING AND OPERATIONS COMMITTEE
From: Director of Engineering & Operations
Subject: Engineering Updates January 2021
RECOMMENDATION:
This report is provided to the Engineering and Operations Committee for its information only.
BACKGROUND / ANALYSIS:
In response to interest shown on how wastewater moves through the Sterling Natural Resource Center as it is
being treated, an exhibit (Exhibit 1) has been prepared that shows flows paths between the treatment processes.
Descriptions of the numbered flow paths in Exhibit 1 are as follows.
1.Raw wastewater from the sewer in Del Rosa Dr to the wet well of the Influent Pump Station
2.Flow pumped by the influent pumps to the channels that feed the Headworks coarse screens
3.Flow from the coarse screens to the vortex grit chambers
4.Flow from the vortex grit chambers to the fine screens
5.Flow from the fine screens to the flow splitting structure
6.Flow from the flow splitting structure to the Equalization Basin
7.Flow from the flow splitting structure to the influent channel for the Aeration Basins
8.Flow pumped from the Equalization Basin to the influent channel for the Aeration Basins
9.Flow through the three Aeration Basins
10.Flow from the effluent channel of the Aeration Basins to the Membrane Filtration System
11.Return Activated Sludge (RAS) from the membrane channels to the RAS channel that connects to the
influent channel of the Aeration Basins
12.Filtered flow from the membranes to the UV disinfection system
13.UV disinfected flow to the wet well of the Recycled Water Pump Station
14.Recycled Water pumped to the groundwater recharge facilities
15.Waste Activated Sludge (WAS) to the thickening process
16.Thickened WAS pumped to the digesters
17.Imported food waste pumped to the digesters
18.Digested sludge to the dewatering process
19.Liquid from the dewatering process to ammonia removal
20.Liquid after ammonia removal back to the Headworks
21.Solids from the dewatering process loaded into trucks and hauled away
AGENCY GOALS AND OBJECTIVES:
R ecommended b y:
Jeff Noelte
Directo r o f Engineering & O perations
AG E N C Y G O ALS AN D OB J E C T IVE S :
G oal and O b jectives I - Implement Effec tive S o lutio ns T hrough Visionary Leadership
a) Identify O pportunities to O p timize Natural R esourc es
G o al and O bjec tives I V - P romo te P lanning, Maintenanc e and P res ervatio n o f Dis tric t R esources
a) Develop P ro jec ts and P ro grams to Ens ure S afe and R eliable S ervices
R E VIE W B Y O T HE R S :
T his agenda item has been reviewed by the executive management team.
F IS C AL IMPAC T
T here is no fis cal impac t as s o c iated with this agend a item.
ATTACH M E N TS:
Description Type
SN RC P lant Flow Diagram Exhibit
D
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A
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SIXTH STREET
FIFTH STREET
D
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A
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CL
CL
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ST
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DEL
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DRI
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Y
EL
M
W
O
O
D
RO
A
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00 40' 80'20'
GRAPHIC SCALE
OPERATIONS
BUILDING
AERATION
BASINS
EQUALIZATION
BASIN
BLOWER
AREA
MBR
FACILITY
UV
DISINFECTION
MAIN
ELECTRICAL
BUILDING
ST
A
N
D
B
Y
GE
N
E
R
A
T
O
R
CHEMICAL
FACILITY
LIQUID
TREATMENT
SOLIDS
PROCESSING
BUILDING
FILTRATE
TREATMENT AND
STORAGE
ODOR CONTROL
HEADWORKS BUILDING
INFLUENT
PUMP
STATION
CHEMICAL
FACILITY UREA
STORAGE COMBINED
HEAT AND
POWER
GAS HANDLING
AND STORAGE
DIGESTER No. 1
ANAEROBIC
DIGESTERS
FO
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W
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T
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R
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C
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V
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G
AN
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A
G
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RECYCLED WATER
PUMP STATION
CH
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M
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F
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SO
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DIGESTER No. 2
OFF SPEC STORAGE
DEL ROSA
TO IPS
7
6
5
4
3
2
8
9
10
1
11
12
13
14
9
9
15
16
17
18
19
20
21
Exhibit 1: SNRC Flow Paths