HomeMy WebLinkAboutAgenda Packet - Engineering & Operations Committee - 11/26/2018EN G IN EERIN G A N D O P ERAT IO N S C O MMIT T EE
November 26, 2018 - 2:30 PM
31111 Greenspot Road Highland C A 92346
AG E N D A
C A LL TO O RD ER
PLED G E O F A LLEG IA N C E
PUBLIC C O MMEN T S
N E W B U SI N E SS
1.Approve the May 29, 2018 Engineering & Operations C ommittee meeting
minutes
2.Plant 28 Rehabilitation Presentation
3.Engineering Updates for November 2018
AD J O U RN
P LEAS E NO T E:
P urs uant to G overnment C ode S ec tion 54954.2(a), any reques t for a dis ability-related
modific ation or acc ommodation, inc luding auxiliary aids or s ervic es , that is sought in order to
participate in the above-agendized public meeting should be direc ted to the District C lerk at (909)
885-4900 at least 72 hours prior to s aid meeting.
Subject to Approval
1
Minutes 5/29/2018 bvm
EAST VALLEY WATER DISRICT MAY 29, 2018
ENGINEERING AND OPERATIONS COMMITTEE MEETING
MINUTES
Ms. Duran called the meeting to order at 2:30 p.m. Mr. Morales led the flag salute.
PRESENT: Directors: Morales, Goodrich
ABSENT: None
STAFF: Jeff Noelte, Director of Engineering & Operations Patrick Milroy,
Operations Manager; Martha Duran, Senior Administrative Assistant;
Brenda Van Meter, Administrative Assistant
GUEST(s): Wayne Brown
PUBLIC COMMENTS
Ms. Duran declared the public participation section of the meeting open at 2:30 p.m.
There being no written or verbal comments, the public participation section was closed.
APPROVE THE NOVEMBER 27, 2017 ENGINEERING AND OPERATIONS COMMITTEE MEETING
MINUTES
Director Morales asked for a clarification on whether a motion and second was required as
there are only two Directors present for these meetings. Ms. Duran will inquire with the
District Clerk and provide an answer to the Directors. Both Directors motioned to approve
as submitted. The minutes were approved.
SET THE DAY AND TIME TO HOLD RECURRING COMMITTEE MEETINGS
Mr. Noelte stated that in the past the meetings were held on the 4th Monday every other
month and recommended that the committee continue the course of that schedule. The
committee agreed. Ms. Duran will ensure the committee calendar is updated to reflect this
schedule.
OPERATIONS AND MAINTENANCE UPDATE
Mr. Milroy presented the Operations and Maintenance Update. He explained that this report
is also provided monthly with the General Manager’s report, but wanted to provide some
explanation in more detail. He stated that there are approximately 8,000 valves in our
system that staff rotates exercising throughout the years, and reviewed the various section
Subject to Approval
2
Minutes 5/29/2018 bvm
of the maintenance and operations reports in detail. When asked about where we find out
about leaks, he responded that our best information about leaks typically comes from
customer reports.
ENGINEERING OVERVIEW FOR MAY 2018
Mr. Noelte presented plant 134’s hydro-electric completion. He stated that a high-pressure
turnout was built to provide high-pressure imported water (State Water Project) to the
hydro-electric generating equipment. The commissioning of this project took two weeks.
It will be important to watch water quality going forward since the organic of the imported
water varies, which impacts the formation of disinfection by-products like TTHM. Only
imported water can be used to generate electricity due to the high pressures needed.
The committee discussed the interconnection agreement with Southern California Edison as
it applies to the hydro-electric generators and the benefits of the cost savings involved.
State Water has a set price, but the availability can potentially change based on drought
conditions.
ADJOURN
The meeting adjourned at 3:14 p.m.
James Morales Phillip Goodrich
Governing Board Member Governing Board Member
S TAF F R E P ORT
Agenda Item #2.
Meeting Date: Novemb er 26, 2018
Dis c ussion Item
To: ENG I NEE R I NG AND O P ER AT I O NS C O MMI T T E E
F rom: G eneral Manager/C EO
Subject: P lant 28 R ehabilitatio n P res entatio n
R E C O MME N D AT IO N:
T his rep ort is p ro vided to the Engineering and O perations C ommittee for its info rmation only.
B AC KGR O UN D / AN ALYS IS :
T he O perations Dep artment regularly inspec ts wells, res ervo irs and pump sites to determine what maintenance is
req uired to ensure maximum water produc tion and s torage capabilities. S taff bud gets nec essary fund s every
year fo r P lant rehab ilitation and maintenanc e. P lant 28 was identified in fis cal year 2017-18 in need of
maintenanc e and up grad es .
P lant 28 is lo cated at 25385 C ourt street, the s o uth s id e o f C o urt s treet just wes t o f Del R o s a Ave. in S an
Bernard ino . T his site contains a ground water well that p ro duces approximately 1500 gallo ns per minute in the
lo wer zone. Downs tream of the well there are four granular ac tivated carbon (G AC ) pres s ure ves s els , eac h
containing 20,000 p o und s o f c o conut shell that remo ve Tetrachlo ro ethylene (P C E) b y ads o rp tion. T he vess els
were ins talled in 1998 and were identified in need of maintenanc e.
Staff inspected the vessels and determined the following deficiencies. T he internal coating showed corrosion and
rust, so they were sandblasted and recoated with N S F approved epoxy. Existing internal filter nozzles were plastic
and brittle; therefore, they were replaced with stainless steel nozzles. D ue to the failing external operating valves and
the various operating modes, all 28 exterior valves were replaced with uniform operation. E xterior coating was
prepped and painted with D istrict Standard G rouse Tan.
L astly, the vessels each received 20,000 pounds of fresh carbon. T he vessels are then sampled to ensure the water
meets all water quality standards and placed back in service.
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 ecommended b y:
P atric k Milro y
O peratio ns Manager
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 he fis c al impac t as soc iated with this agenda item was listed in O p erating Budget F isc al Year 2017-18.
ATTACH M E N TS:
Description Type
P lant 2 8 Rehab P resentation P resentation
PLANT 28A GAC VESSEL REHAB
November 26, 2018
•Groundwater Well-Lower Zone
25385 Court St, San Bernardino
(South Side of Court St, just west of
Del Rosa Ave.)
•Contaminant -PCE
(Tetrachloroethylene)
•Treatment Process -Activated
Carbon Adsorption
•Installed in 1998
•4 Low Pressure Vessels
•20,000 lbs. Coconut Shell
Activated Carbon/Vessel
PLANT 28A KEY POINTS
EAST VALLEY WATER DISTRICT
Internal Vessel
Inspection was
Performed
Equipment
deficiencies were
observed and
analyzed
•Internal Coating
•Filter Nozzles
•Operating Valves
•Exterior Coating
Each deficiency
was evaluated,
and budgeted for
repair
Repairs were
scheduled to
maximize existing
carbon life,
manage temporary
production loss
EAST VALLEY WATER DISTRICT
Rehab Project Overview
•Each Vessel was inspected and
photographed during carbon exchanges
•The underdrain area showed excessive
corrosion
•Upper chamber showed most rust
accumulating in weld joints
•Research was conducted to identify
coating type
EAST VALLEY WATER DISTRICT
Internal Coating
•Vessels had original coating striped
•Surfaces were prepped via
•Sandblast
•Grinding
EAST VALLEY WATER DISTRICT
Internal Coating
•Replacement Epoxy Based Coating was
applied
•NSF approved Tnemec 22 series Epoxy
EAST VALLEY WATER DISTRICT
Internal Coating
•Existing filter nozzles were original plastic
•Over time the plastic nozzles became brittle
•Susceptible to breakage during carbon exchanges
EAST VALLEY WATER DISTRICT
Filter Nozzles
•Filter Nozzles were replaced
•New Nozzles -316 Stainless Steel
•122 Nozzles/Vessel
EAST VALLEY WATER DISTRICT
Filter Nozzles
•Existing valves were failing
•Limited operational abilities (Series, Parallel)
•Various operating modes (Reverse)
•28 valves
EAST VALLEY WATER DISTRICT
Operating Valves
•Replacement Valves were installed
•Valves are uniform in operation
EAST VALLEY WATER DISTRICT
Operating Valves
EAST VALLEY WATER DISTRICT
Plant 28 GAC Water Flow Diagram
Well 28
Effluent Influent
Carbon Carbon
Effluent
•Vessel and Piping was showing primer and rust
•Additional on-site equipment paint was deteriorating
EAST VALLEY WATER DISTRICT
Exterior Coating
•Vessel Exteriors were prepped
•Standard District color (Grouse Tan) and
product were chosen
EAST VALLEY WATER DISTRICT
Exterior Coating
•The vessels each received 20,000 lbs. of
fresh Carbon
•12 X 30 Mesh Size Coconut Shell Carbon
•Sampling was completed
•Vessels were placed back in service
EAST VALLEY WATER DISTRICT
Rehab Wrap Up
•Preliminary numbers were
created via informal bids
•Funds were budgeted in
treatment
•Total Project Cost $96,300
•Project duration-3 months
•Anticipated life expectancy -20
years
EAST VALLEY WATER DISTRICT
Funding the
Rehab
EAST VALLEY WATER DISTRICT
Questions?
S TAF F R E P ORT
Agenda Item #3.
Meeting Date: Novemb er 26, 2018
Dis c ussion Item
To: ENG I NEE R I NG AND O P ER AT I O NS C O MMI T T E E
F rom: Direc tor of Engineering & O p eratio ns
Subject: Engineering Up d ates for No vemb er 2018
R E C O MME N D AT IO N:
T his rep ort is p ro vided to the Engineering and O perations C ommittee for its info rmation only.
B AC KGR O UN D / AN ALYS IS :
An update o n the P lant 134 Hyd roelec tric S ystem is given below.
P lant 134 Hydroelec tric S ystem:
T he s ystem has b een o p erating sinc e Ap ril.
A web portal is available to view energy generatio n d ata. Two s c reen sho ts o f this web portal are s hown
in Exhibit 1.
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
c) D edicate E fforts Toward S ystem M aintenance and Modernization
R E VIE W B Y O T HE R S :
T his agenda item has been reviewed by the executive management team.
R es p ec tfully s ubmitted :
Jeff Noelte
Directo r o f Engineering & O perations
F IS C AL IMPAC T
T here is no fiscal impact associated with this agenda item.
ATTACH M E N TS:
Description Type
Exhibit 1 =P lant 1 34 Hydro Cover M e mo
EXHIBIT 1: PLANT 134
Exhibit 1: Screen shots of the web portal for the hydroelectric generation system at Plant 134