HomeMy WebLinkAbout1976-07-06; City Council; 3310-4; Vista Carlsbad sewer transmission systemAGENDA BILL NO. *33/d ~ Jlju^L/L/O^tj2^L^3/ Initial:
Dept.Hd
DATE: July 6, 1976
DEPARTMENT: Engineering
Subject: VISTA-CARLSBAD SEWAGE TRANSMISSION SYSTEM - CONSTRUCTION
OF THE AGUA HEDIONDA PUMPING STATION - PHASE I IMPROVEMENTS
_ AND THE BUENA VISTA PUMPING STATION STANDBY POWER SYSTEM.
Statement of the Matter
Plans and specifications for construction of the Agua Hedionda
Pumping Station - Phase I Improvements and the Buena Vista Pumping
Station Standby Power System have been completed by Brown and Cald-
well Consulting Engineers in accordance with Agreement No. VSD-108,
the second supplemental agreement between the Vista Sanitation Dis-
trict and the City of Carlsbad, dated September 3, 1975. Said agree-
ment approved September 2, 1975 by City Council Resolution No. 3740.
A detailed description and cost estimate for subject improvements
are set forth in attached Exhibit "A" . The Engineering Department
has reviewed and approved the plans and specifications.
Carlsbad's estimated share of the cost of the improvements is in the
amount of $148,500. Also, upon commencement of construction the
Vista Sanitation District shall pay the City of Carlsbad $3,000 for
capacity rights fqr the Agua Hedionda Pumping Station. The City of
Carlsbad will pay the Vista Sanitation District a prorated portion
of $23,000 for capacity rights for the Buena Vista Pumping Station,
said prorated amount being approximately $8,00.0. Funds are available
in the City's Joint Sewer Construction Funds for this project.
Exhibit
A. Letter dated June 22, 1976, from the County of San Diego, De-
partment of Sanitation and Flood Control (Project Manager for sub-
ject improvement) .
B. Resolution No. 3f 7*} / approving plans and specifications and
authorizing the Vista Sanitation District to advertise' for bids and
award a contract .
C. Plans and Specifications (available at the Council Meeting) .
Recommendation
Adopt Resolution No. J , approving plans and specifications and
authorizing the Vista Sanitation District to invite bids for construc-
tion of the Agua Hedionda Pumping Station - Phase I Improvements and
the Buena Vista Pumping Station Standby Power System. .
Council action
7-6-76 Resolution #3949 was adopted, approving Plans and Specifications
and authorizing Vista Sanitation District to invite bids.
COUNTY 09 S.4N DIEGO
COMMUNITY SERVICES AGENCY
"-:±3>
C. J. HOUSON
Department of Sanitation & Flood Control
Director County Opefatlqns Center, 555S Overland Avenu«, San Di«go, California 92123 ..... Telephone: 565-5325
2 2 JUN 1976 REF: SFC4/7703
Board of Directors
Vista Sanitation District
Box 188
Vista, California 92083
. SUBJECT: Agua Hedionda Pumping Station - Phase I
Improvements & Buena Vista Pumping Station
Standby Power System: Projects No. YR0076 C- YR0077
As project manager for the subject improvements, it is our pleasure to inform
you that it is now appropriate to advertise for construction bids for the
proposed work. By agreenent between your District and the City of Carlsbad,
Vista was designated as lead agency to see that the needed sewerage construc-
tion is accomplished. The drawings and specifications have been reviewed and
approved by ourselves, Carlsbad and your staff. The contract documents have
been reviewed and approved' as to form by the attorney for your district. It
is my •
RECOMMENDATION: That your Board
1. Approve the enclosedplans, specifications and contract documents for
this project.
2. - Authorize the Clerk of the Board to advertise for construction bids.
3. Establish 2:00 P.M. Thursday, August 12, 1976 at the Board Room of the
Vista Sanitation District as the time, date and place of opening the
construction bids.
Discussion:
By agreement dated 7 June, 1973 between the City of Carlsbad and the Vista
Sanitation District, the two agencies agreed to make certain improvements and
enlargements to the following jointly owned wastewater pumping and transmission
facilities:
1. Buena Vista Pumping Station
2. Buena Vista Force Main (Parallel Line)
5. Agua Hedionda Pumping Station
Board of Directors
Vista Sanitation District
Page 2
2 2 JUH 1976
Subsequently, the firm of Brown § Caldwell was employed to do the engineering
design and the San Diego County Department of Sanitation 5 Flood Control was
authorized to administer the proposed work on behalf of your Board.
The Buena Vista Force Main has been paralleled thus increasing the capacity of
the Buena Vista Pumping Station (BVPS) from approximately 6 to 9 mgd with three
pumps operating. By'observing the number of hours the pumps operate at the two
major pumping stations it was observed the Agua Hedionda pumps were operating
considerably more hours than at the Buena Vista facility. It was therefore
determined it was most urgent to increase the capacity and reliability of the
Agua Hedionda Pump Station (AMPS) before the BVPS pump additions are undertaken.
The parallel force main provides interim relief to the capacity problem for the
BVPS.
There is urgent need for the additional Agua Hedionda pumping capacity due to
growth in Vista and Carlsbad. Also, the increased capacity of the BVPS must be
handled by the downstream AHPS. Furthermore, the AHPS is located at the south
shore of the Agua Hedionda Lagoon which has many' aquatic recreational uses.
It is essential the 'pumping facility is adequate in capacity and will function
in case of an interruption of power.
You will recall that Carlsbad authorised Vista to purchase standby power genera-
tion sets for each of the pumping facilities. The units purchased were consider
to be uniquely suited to the need and were being phased out of production by
Solar. Since the turbine generators are purchased and needed at both pump stati
this contract includes their installation at the BVPS and the AHPS.
This project is the second of the three steps outlined in the study with the
exception the standby power improvement for the BVPS is included. The work
at the AHPS consists of: adding a fourth pump which will increase the capacity
from 10.6 mgd to 15 mgd; considerable piping and electrical work primarily
associated with the new pump; new adequate ventilation systems for the wet and
dry well areas; installation of the previously purchased turbine generator set
capable of operating all the pumps in case of electrical power failure; and
miscellaneous paving, structural, fencing and rehabilitation work. At the
BVPS just the installation of the two standby turbine generator sets and
associated work will be done at this time. These units will power all the pumps
this station. At present just one of the pumps at each station are operable in
case of a power interruption.
c
Board of Directors
Vista Sanitation. District
Pige 5
2 2 JUN 1976
The estimated total cost of the entire project is 5435,000 with cost sharing,
according to ownership, allocating $286,500 to Vista and 5148,500 to Carlsbad.
Unclosed is a final cost estimate sheet that shows the development of project
costs and the allocation between each agency. Funds for this work have been
budgeted by Carlsbad and your District and are available. On 6 July, 1976
Carlsbad approved the project plans and specifications which, in accordance
with Section 5 of Vista Sanitation District Agreement No. 108, authorizes
your District to advertise for bids upon approving plans and specifications.
It is recommended that Vista request Carlsbad to deposit sufficient funds with
Vista at an appropriate time so all contract payments can be met.
Your attention is also directed to Section 4 of Agreement No. 108 which requires
each party to pay the stipulated costs associated with the reallocation of
capacity rights (ownership) for each unit. Upon commencement of construction
Vista is to pay Carlsbad $3,000 for AHPS and Carlsbad is to pay Vista a prorated
portion of $25',000 for the BVPS. See Table II in the Agreement.
We recommend the District award an acceptable construction bid as soon as possible
since the contract time'is 455 days. This is due to the long delivery time of
the pump and special driving equipment. We would like to point out the contractor
is required to install the turbine generator equipment during the early phases
of construction at each station. A proposed project schedule is enclosed.
The Environmental Impact Report (EIR) was accepted and certified by the City of
Carlsbad on 4 March, 1975. Your Board has previously approved the EIR and
authorized preparation of plans and specifications. A permit for the work was
issued by the San Diego Coast Regional Commission on 2 May, 1975.
CBO:jc
Enclosures:1. Plans and Specifications
2. Final Cost Estimate
3. Proposed Project Schedule
cc - City of Carlsbad: Attn: Mr. Ronald Beckman
Brown § Caldwell: Attn: Mr. Mike Hoover
Controller Branch Office: Attn: Jack Mori en M.S. 0306
FINAL COST ESTIMATE
AGUA HEDIONDA PUMPING STATION PHASE I
IMPROVEMENTS AND BUENA VISTA PUMP STATION
STANDBY POWER SYSTEM
Costs:
Bid Item No. 1 - Agua Hedionda Pumping Station
Phase I Improvements (1) $322,000
Bid Item No. 2 Buena Vista Pumping Station
Standby Power System (2) 75,000
Estimated Construction Cost $597,000
Resident Engineering 21,000
Project Administration, Printing, Advertising,
legal, miscellaneous 7,000
Contingency 10,000
$435,000
(1) Includes $12,000 construction contingency
(2) Includes $ 3,000 construction contingency
Cost Sharing Vista Carlsbad
Buena Vista Puira Station
(Ownership) * (84.5%) (15.5%)
Construction $65,400 $11,600
Resident Engineering 5,400 600
Miscellaneous 1,100 200
Contingency 1,600 500
Sub-Total $69,500 $12,700
c
Cost Sharing (Cont'd)Vista Carlsbad
Agua Hedionda Pump Station
(Ownership)
Construction
Resident Engineer
Miscellaneous
(61.5%)
10,500
5,500
(38.5%)
$198,000 $124,000
6,500
2,200
Contingency 5,000 3,100
Sub-Total:
Total:
$217,000
$286,500
$135,800
$148,500
w
PROPOSED PROJECT SCHEDULE
AGUA HEDIONDA PUMP STATION -
PHASE I IMPROVEMENTS AND BUENA
VISTA PUMP STATION - STANDBY
POWER SYSTEM
Sten Date
Plans and Specifications approved by Carlsbad July 6, 1976
Vista approves plans and specifications and authorizes bids July 7, 1976
Bids Opened
Contract Awarded
Construction Starts
Construction Completed
Aug.12, 1976
Sept.l, 1976
Oct. 1, 1976
Jan. 1, 1978
BROWN AND CALDWELL
CONSULTING ENGINEERS
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L B DUIXLAP. PE Vice Pi
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April 29, 1976
Mr. C. B. Oidsen
EncinaW. P.O. Facility
6200Avenida Encinas
Carlsbad, California 92008
Subject: Plans and Cost Estimate for AHPS.-Phase 1 Improvements
and Standby Power System at BVPS i
Dear Mr. Oidsen:
S-396D
For our meeting today, please find three (3) complete sets of plans for the
subject project. Project specifications are presently being reviewed for typing
and should be available to you next week.
Our cost estimate for this project is as follows with details attached.
Bid Item 1 (AHPS) = $322,000
Bit Item 2 (BVPS) = 75,000
Total $397,000
Please contact us if you have any questions.
Yours very truly,
BROWN AND CALDWELL
Michael G. Hoover
Project Engineer
MGH/bb
encl.
BROWN AND CALDWELL ISO SOUTH ARROYO PARKWAY BIN 83 ABROYO ANNEX PASADENA. CA 91109 (213)577-1020
ENVIRONMENTAL SCIENCE AND ENGINEERING WALNUT CREEK PASADENA EUGENE SEATTLE
COST ESTIMATE
(1) Agua Hedionda Pumping Station - Phase I Improvements
Item Amount
Sitework - $ 11,000
Structural 20,000
Mechanical equipment 169,000
Piping 39,000
Electrical 57,000
Instrumentation 26,000
Total $ 322,000
(2) Buena Vista Pumping Station - Standby Power System
Item Amount
Sitework - $ 10,000
Structural 9,000
Mechanical equipment 13,000
Piping 3,000
Electrical 39,000
Instrumentation 1, OOP
Total $ 75,000
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RESOLUTION NO. 3949
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
CARLSBAD, CALIFORNIA, APPROVING PLANS AND SPECIFI-
CATIONS AND AUTHORIZING THE VISTA SANITATION DIS-
TRICT TO INVITE BIDS FOR: CONSTRUCTION OF THE AGUA
HEDIONDA PUMPING STATION - PHASE I IMPROVEMENTS AND
THE BUENA VISTA PUMPING STATION STANDBY POWER SYSTEM.
WHEREAS, on September 3, 1975, the City of Carlsbad and the
Vista Sanitation District entered into a Second Supplemental Agree-
ment for the enlargement and addition to those Joint Facilities
known as the Buena Vista Pumping Station, the Buena Vista Force
Main and the Agua Hedionda Pumping Station; and
WHEREAS, pursuant to said agreement plans and specifications
have been prepared and filed in the Engineering Department of the
City of Carlsbad for construction of the Agua Hedionda Pumping
Station - Phase I Improvements and the Buena Vista Pumping Station
Standby Power System and are incorporated by reference herein;
NOW, THEREFORE, BE IT RESOLVED by the Council of the City
of Carlsbad, California, as follows:
1. That the above recitations are true and correct.
2. That those certain drawings and specifications for con-
struction of the Agua Hedionda Pumping Station - Phase I Improve-
ments and the Buena Vista Pumping Station Standby Power System,
dated June, 1976, are hereby approved and the Vista Sanitation
District is authorized to advertise for bids thereon, award and
enter into a contract in response to the bids received as agent
of and on behalf of the Vista Sanitation District and the City of
Carlsbad to accomplish the construction set forth in said Plans and
Specifications.
PASSED, APPROVED AND ADOPTED by the City Council of the City
of Carlsbad at a regular meeting held the 6th day of July ,
1976, by the following vote, to wit:
AYES: Councilmen Frazee, Lewis, Packard, Skotnicki and
CounciIwoman CaslerNOES: None
ABSENT: None
ATTEST: •
ROBERT C. FRAZEE, May,