HomeMy WebLinkAbout1986-01-07; City Council; 8467; Encina Sewer Metering ProjectCHQOF CARLSBAD — AGENIQBILL
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RECOMMENDED ACTION:
Approve Resolution No.which authorizes a sewer metering project at
Encina and direct a fund transfer for the project budget.
ITEM EXPLANATION:
The Encina flows are metered by the member agencies and at the plant. Carlsbad
contributes flows at various locations to the Vista, San Marcos, Buena and
Leucadia trunk lines which cross the city. Carlsbad's flows are not metered but
are mathematically developed by summing the agency flows and then subtracted from
the plant flow. Metering all Carlsbad connections is estimated to cost
$200,000 - $300,000 and would result in a considerable annual maintenance cost.
The present method of determining Carlsbad flows is straight forward, however
any meter malfunction of the member agencies can adversely affect the calculations.
Accurate flow information is needed to determine Carlsbad's charges from Encina
(about 60% of total operating costs are variable costs based on flow) and to
accurately project remaining capacity and the gallons per average EDU.
It is proposed that Carlsbad install a single meter at the Encina influent structure
which will serve as a check meter on the Vista and Leucadia meters and/or the plant
meter. A schematic diagram is included as Exhibit A. This meter will assist in
more accurately determining Carlsbad's flows to the plant and is considered
a more cost effective alternative than metering all of Carlsbad's connections.
The total project budget is estimated to be $49,500. The Encina Technical
Advisory Committee recommended to the JAC that this metering program be
implemented. The JAC approved the proposal at its meeting of August 28, 1985.
FISCAL IMPACT;
The Sewer Construction Fund is estimated at $3.3 million at year end. The project
is a permanent addition to Encina and is appropriately funded from the Sewer
Construction Fund.
EXHIBITS:
A. Encina Meter Schematic
B. Resolution No.
Coordination copy to:
Engineering Department
Finance Department
Buena Meter
B
San Marcos Meter
Carlsbad Flow
Vista Meter I
A Buena Outfall '
Meter ^
I
I
Proposed Meter i S~\ Q
Carlsbad Flow
"1
r ENCINA
San Marcos
Outfall Meter
Carlsbad Flow
I |
Plant Flow
or
H (corrected)
E,F + G (proposed)
Carlsbad Flow
H (corrected) - (A+B+C+D)
or
E,F + G (proposed) -
(A+B+C+D)
I
Effluent
Meters
Carlsbad Flow
Leucadia Flow
Leucadia Meter Encinitas
Flow
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RESOLUTION NO. 8341
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CARLSBAD,
CALIFORNIA, APPROVING A SEWER METER PROJECT AND AUTHORIZING
THE TRANSFER OF FUNDS
WHEREAS, the City of Carlsbad is a party to the Encina Joint Powers Agency
for the construction, operation and maintenance of the Encina Water Pollution
Control facility; and,
WHEREAS, the City of Carlsbad does not meter the city sewage flows to the
Encina facility but determines Carlsbad flows by subtracting the sura of the
other five agencies' flows from the total plant flow; and,
WHEREAS, the method of calculating Carlsbad's flow is affected by the
operation and accuracy of the other agency flows; and,
WHEREAS, the Manager of the Encina facility proposes to install a meter
which will serve as a check on the other agency meters and the plant meters which
will result in more accurate calculation of Carlsbad's flow;
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of carlsbad
as follows:
1. The above recitations are true and correct.
2. The Sewer Meter Project as outlined by letter from the Manager
of the Encina Water Pollution Control Facility attached hereto
and made a part hereof is approved.
3. The Director of Finance is directed to transfer forty-nine thousand
five hundred dollars ($49,500) from the Sewer Construction Fund
Reserve to the Sewer Meter Project budget.
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PASSED, APPROVED AND ADOPTED at a regular meeting of the City Council of
the City of Carlsbad held on the 7th day of January 1986, by the
follwoing vote, to wit:
AYES: Council Members Casler, Lewis, Kulchin, Chick
NOES: Council Member Pettine
ABSENT: None
y.
MARY H. 0ASLER, Mayor
ATTEST:
ALETHA L. RAUTENKRANZ, City Clerk
(SEAL)
c
ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas
Carlsbad, CA 92008-0171
Telephones (619) 438-3941
(619)438-3954December 16, 19,
City of Carlsbad
1200 Elm Avenue
Carlsbad, California 92008
Attention: Mr. Roger Greer
Subject: Carlsbad Sewage Metering Station
Proposal for Engineering Services
UTILITIES &
c MAINTENANCE '-.'-;
DEPT. • •'
Ref: 1F.1326
At the 3uly, 1985 OAC meeting the TAG recommendation that Carlsbad install a
meter at the Encina plant was approved.
The purpose of the meter is to provide a more direct measurement of Carlsbad
flow and a redundancy to assist in metering accuracy rather than relying only on
periodic calibrations. Also, the meter would assist in addressing the Basic
Agreement, Section 18 - Infiltration Distribution and the need for a 3 year
Flow/EDU analysis to correct for past inaccuracies.
I recommend Encina through Leucadia County Water District (LCWD) award and admi-
nister the meter design and construction efforts. Pursuant to this I requested
Wilson Engineering to submit the attached design and construction services pro-
posal.
The proposal and fee appear reasonable. Since this project was not included in
the Encina budget funding needs to be provided. I would recommend the
following total project budget:
Engineering:
Construction:
Design
Construction Services
Contingency
Contingency
Total
$5,500
2,500
1,500
35,000
5,000
$9,500
$40,000
49,500
With Carlsbad's concurrence and funding I will recommend to LCWD approval of the
letter proposal from Wilson Engineering.
NOW SERVING THE CITY OF VISTA, CITY OF CARLSBAD, BUENA SANITATION DISTRICT, SAN MARCOS COUNTY WATER DISTRICT,
LEUCADIA COUNTY WATER DISTRICT AND ENCINITAS SANITARY DISTRICT
Mr. Roger Greer
Subject: Carlsbad Sewage Metering Station
December 16, 1985
Page 2
At this stage I would estimate a July 1, 1986 on line date in accordance with
the following schedule:
NTP Wilson Engineering
Design and Specifications Preparation
Bid
Award
Construction
On Line
Please call if you have any questions.
Very truly yours,
January, 1986
February-March, 1986
April, 1986
May, 1986
May-June, 1986
July 1, 1986
Richard
General Mana;
RWGrmaj
Attachment
ENCINA WATER POLLUTION CONTROL FACILITY
6200 Avenida Encinas, Carlsbad, CA 92008-0171 (619) 438-3941, (619) 438-3954
.Serving North
San Diego County
'**«*''
WILSON ENGINEERING
December 3, 1985
Encina Water Pollution Control Facility
6200 Avenida Encinas ^.vVp
P.O. Box 1005
Carlsbad, CA 92008
Attention: Richard W. Graff
Subject: Proposal for Engineering Services
Carlsbad Sewage Metering Station
We are pleased to provide the Encina WPCF with the following
proposal for Engineering services for design of a sewage
metering station. We propose to do the work on an hourly
rate 'basis with a cost ceiling of $5,500 for Tasks 1 and 2.
Task 3 will be done on an hourly rate basis with an
estimated cost ceiling of $2,500.
SCOPE OF SERVICES
Wilson Engineering will do the following
Tasks
1. Perform an analysis to determine the future influent
metering requirements of the Encina Plant and recommend
facilities to be installed as part of this project.
Parshall vs. Palmer Bowlus Flumes will be considered.
Station cost, accuracy, and constructabili ty will be
among the criteria analyzed.
2. Based upon the recommendation from Task 1, biddable
plans and specifications will be produced. Design
drawings and specifications will include mechanical,
structural and electrical details and will be comprised
of flume, flume support pad, flume access structure,
flow measurement and recording instrumentation,
telemetry equipment for transmission to the Encina main
control panel and all necessary structural, electrical
and mechanical appurtenances. The specifications will
include a recommended construction sequence to ensure
that raw sewage flow is uninterrupted during
construction of the metering station.
DEXTER S WILSON PE
KEVIN E SCHMIDT PE
ir c: e. i v t-
3138 ROOSEVELT STREET. SUITE "M"CARLSBAD. CALIFORNIA 92OO8 (619) 434-7O19
Richard W.
December
Page Two
December 3, 1985*"*''
Assistance during construction including inspection
review of submittals, clarifications during bidding and,
construction and change orders if necessary. This task
will be done as needed based on the contractors work
schedule. At the present time we estimate that 30 hours
of on site inspection will be needed.
TIME OF COMPLETION
We estimate that Task 1 can be completed within a week of
your notice to proceed with the work. We estimate that Task
2 will be 100% complete in six weeks after completion of
Task 1. Task 3 will take approximately 4 months.
COMPENSATION
Work completed under this contract will be billed on a
monthly basis. Fees will be calculated on an hourly rate
basis by multiplying the actual hours worked on the job in
each work classification by the rates in the schedule
attached as Exhibit "A".
QUALIFICATIONS
Dexter S. Wilson will coordinate the services described
above. Mr. Wilson is a Registered Civil Engineer in
California and graduated from Stanford University with a
Bachelor of Science in Chemistry, and from the University of
Arizona with a Master of Science in Engineering. A copy of
his resume is attached.
We appreciate the opportunity to submit this proposal for
Engineering services. We look forward to working with you
on the project.
Respectfully submitted,
Wilson Engineering_
Dexter S. Wilson
DSWrmry
Attachments
Richard W. Grafff*^
December 3,
Page Three
I accept the proposal and authorize the work described above
to be performed.
Encina WPCF Date
December, 1985
EXHIBIT "A"
WILSON ENGINEERING
Rate Schedule
CLASSIFICATION:
Office Personnel
Engineering
Design Engineer
Project Engineer (RCE)
Principal Engineer (RCE)
Drafting
Draftsman
Clerical
Secretary
HOURLY RATE
$40.00
$50.00
$55.00
$30.00
$15.00
DEXTER S. WILSON
EDUCATION
Bachelor of Science, Chemistry, Stanford University, 1977.
Master's Degree, Civil Engineering, University of Arizona, 1979
PROFESSIONAL AFFILIATIONS
Registered Professional Engineer, No. C-33692, California.
Member, Water Pollution Control Federation.
Member, American Water Works Association.
EXPERIENCE
1978-1981
1981-1983
1983-Present
SCOPE OF ACTIVITIES
Brown and Caldwell, Tucson,
Arizona and Pasadena, California
Fraser, Wilson & Associates,
Carlsbad, California
Wilson Engineering,
Carlsbad, California
The following projects are categorized to indicate the
scope of professional activities.
WATER SYSTEMS
Investigative study of nitrate in Arizona drinking water
supplies for the State of Arizona, Department of Health
Services. The study dealt with sources and removal methods
for nitrate in water supplies, as well as identification
of current and projected problem areas - Project Engineer.
Water system review and design of pressure reducing station
for 110 unit subdivision in Carlsbad, California - Project
Manager.
Design of water systems, including potable, non-potable
and reclaimed water for 18 mgd wastewater treatment plant.
Design included backflow prevention, pumping stations,
chemical feeders, strainers, and piping systems - Project
Engineer.
Design of water booster pumping station for 200 unit sub-
division in Escondido, California - Project Manager.
STORM DRAINAGE SYSTEMS
Preliminary study and project report for stormwater
control facilities for a 1000 unit subdivision in
Seal Beach, California. A 200 cfs stormwater pumping
facility was included in this study - Project Manager.
Design of storm drainage system for a 20 acre waste-
water treatment plant site. The design included a 1300
foot section of 30 foot wide channel which carried a
peak flow of 2000 cfs through the site - Project Engineer.
WASTEWATER SYSTEMS
Design of an 18 mgd activated sludge plant for the Encina
Joint Powers, Carlsbad, California. The plant was
designed for modular expansion to 45 mgd and includes
a cogeneration system to produce on-site electrical power.
The $55,000,000 project was divided into four equipment
pre-purchase contracts and three construction contracts -
Project Engineer.
Phase III-A Project Report for the Encina Water Pollution
Control Facility for expansion of the plant from 18 mgd
to 22.5 mgd -Project Engineer.
Sludge management study and chemical characterization of
sludge for the City of Tucson - Project Engineer.
Master Plan of Sewers for the Vista Sanitation District,
Vista, California - Project Engineer.
Facilities plan for the City of Colorado Springs, Colorado •
Project Engineer.
Industrial Waste Survey Procedures Manual for the Maricopa
Association of Government - Project Engineer.
Industrial waste monitoring for the City of Simi Valley -
Project Engineer.
Design and prepare plans and specifications for wastewater
pumping station for 110 unit subdivision, Carrillo Unit #2,
Carlsbad, California - Project Engineer.
Design and prepare plans and specifications for wastewater
pumping station for 200 unit subdivision, Quail Ridge,
Carlsbad, California - Project Engineer.
Consultant to the Vista Sanitation District for the setup
of procedures for maintenance, management and operation
of the District, Vista, California - Project Engineer.
GOVERNhgNT CONTRACTS
U.S. Navy, open end contract, 32nd Street Naval Base,
San Diego, California. Specific projects included repairs
to a;pier, repairing of a parking lot, design of a golf cart
washing area and installation of chain link fencing - Project
' Mahajger.
U.S. Marine Corps, replacement of water main, Camp Pendleton,
Oceanside, California - Project Engineer.