HomeMy WebLinkAbout; ; Tri-Agencies Pipeline Project Progress Report; 1975-01-15HBH WOOD
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WOODSIDE/KUBOTA A ASSOCIATES, INC
MEMORANDUM January 15, 1975
TO: Board of Directors
Carlsbad Municipal Water District
FROM: Jack Y. Kubota, District Engineer
SUBJECT: Tri-Agencies Pipeline Project -
Progress Report
The District staff has continued our activities in pursuing this
important project and we are bringing to you an up-to-date report-
ing of events that are taking place by action of our cooperating
agencies and we also have detailed information for your consideration
to move into the action phase of our joint project. The Tri-Agencies
staff held an important meeting on January 10, 1975, and the follow-
ing matters were discussed in detail:
1. The San Diego County Water Authority staff is continuing their
specific engineering design activities for the joint pipeline
project; however, they have not proceeded at all with the
sector westerly of the proposed intersection of Elm Avenue and
College Avenue in our Carlsbad District. The Authority staff
reports that upon the authorization of a total of $30,000.00
in additional funds ($10,000.00 per agency) the Authority can
complete the plans and specifications for the reach identified
above. There are specific recommendations on this matter that
will be submitted to you soon. The draft environmental impact
report, has been filed by our special consultant, U.R.S., and
distributed to all of the participating agencies. All of the
staff members reviewed the report and the consultants will now
proceed with the necessary revisions, corrections, and additions,
which we have collectively requested. Upon the completion of
the draft environmental impact report we shall proceed with
public dissemination of the information and the public hearings
as required by the California Environmental Quality Act.
2. Vista Irrigation District has formally acted for conducting a
general election on May 27, 1975, for a general obligation
bond issue for the Tri-Agencies Pipeline and other capital
improvement projects that are District-wide. Being an irriga-
tion district, they have special procedures to follow so that
they are moving quickly to meet the deadline of February 24,
1975.
HHH WOODSIDE/KUBOTA A ASSOCIATES. INC.
is
Page 2
Memorandum
January 15, 1975
3. The City of Oceanside is fully prepared to move quickly upon
the final action of the Vista Irrigation District and our
District for the financing that we would be obligated for in
the joint pipeline project.
4. The joint agencies staff will be continuing our effort to deve-
lop a formal joint powers agreement between the three agencies
for the construction, operation, and administration of the
project. Also, of extreme importance is an overall project
schedule so that the actual utilization of the pipeline facili-
ties can commence in a timely manner for all of the Districts
involved. One important issue to be concerned with involves
the advance ordering of special valves and metering equipment,
which currently have a substantial delivery time. As an example,
some of the hardware have up to a one year delivery schedule.
In addition, we have the opportunity to take advantage of the
shut-down of the Authority aqueduct during the winter of 1975 -
1976 to construct the main outlet on Rancho Santa Fe Road in
San Marcos. Again, this will involve a decision of each of the
agencies in a timely way for the expenditure of funds.
In view of the advances made to date, the District staff believes
it is appropriate for our Board of Directors to proceed with an
action program to implement this very important project. To main-
tain our firm posture of providing a practical level of public water
service to our District, we must proceed to increase our capability
for water delivery. This project has been of a priority matter with
our District since 1971 and it is appropriate to recap the background
of this project. For your information there is enclosed with this
packet the original project report of 1971 and the excerpts of the
engineering report of 1972, prepared by the San Diego County Water
Authority. Essentially, our need to complete this project are for
the purposes of:
1. providing additional pipeline capacity to serve the current
needs of our service area and accomodate increasing service
requirements,
2. provide a higher pressure water service to the sections of
our District, where we currently have to provide expensive
local pumping service.
J WOOD!
•s
• MOINEEftS
WOODSIDE/KUBOTA A ASSOCIATES. INC.
Page 3
Memorandum
January 15, 1975
3. to take advantage of the tremendous savings that can accrue to
our District by joining forces with our two neighbors to con-
struct a major pipeline for all three communities.
It is appropriate at this point to present to you specific statisti-
cal data which demonstrates that our pursuit of this project for the
last four years has been timely. Plate I presents two graphs, which
depicts the annual production of the Water District for the past
eleven years. Included in the graph are the flow figures for the
peak conditions, which have generally occured in the summer month
of August. You will note that we have for the past three years
experienced peak flow conditions, which have exceeded our current
pipeline capacity. Fortunately our water system has the advantage
of utilizing the emergency storage of our Squires Dam facilities
to carry us over these conditions to date.
The San Diego County Water Authority has presented their latest
engineer's estimate for the Tri-Agencies Pipeline to the College
and Elm location and we have added additional data to arrive at a
composite estimate of the total cost of this project. The following
is a presentation of this latest Tri-Agencies cost estimate:
Agency
Carlsbad M.W.D.
Oceanside, City of
Vista l.D.
Agency Share
(In Million Dol1ars)
2.32
0.96
1 .07
Percent of Total
53.3
22.1
24.6
Total 4.35 100
Notes (1)
(2)
(3)
This constructtion cost estimate is for Spring 1975.
Included in the cost estimate is a factor of 1.25
to cover expenses for engineering design, inspection,
surveying, and legal and right-of-way proceedings.
Not included is any overall project contingency
factors.
HIH WOOD WOODSIDE/KUBOTA A ASSOCIATES, INC
•MOIMMBHS
Page 4
Memorandum
January 15, 1975
Outside the scope of the Tri-Agencies Pipeline Project, our District
will also incur additional expenses in the construction of a local
chlorination station and piping at our Squires Dam Facility. We
estimate these construction items to have a cost of $300,000.00.
Plate No. II is a graphical presentation of the cost estimate for
the entire Tri-Agencies Pipeline Project. You will also note that
the respective cost shares of the Districts and pipeline capacity
are identified on this illustration.
We have collectively discussed for some time the fact that the finan-
cing for this joint project will be a major task and that ultimately
a decision must be made regarding a bond issue to be offered to the
voters of our District. Now that we have this latest up-to-date
engineer's estimate of the entire project it is timely to proceed
with a detailed evaluation of alternatives for the Board to con-
sider. In order to proceed with this study the District staff
would need the assistance of special financial consultants and
special bond counsel.,
In summary, this latest memorandum report gives you a composite
picture of where we have come to date and describe to you those
specific tasks that the Board of Directors should now consider.
Accordingly, we have the following recommendations for your con-
sideration :
1. The Board of Directors reaffirm their participation in this
joint pipeline project with the Vista Irrigation District and
the City of Oceanside.
2. Authorize the District staff to proceed with an evaluation of
a bond issue and submission of a report to the Board of Direc-
tors not later than February 19, 1975.
3. The Board authorize the staff to retain the services of a special
financial consultant and special bond counsel to assist the
staff in the preparation of a financing report.
If appropriate the staff would welcome the participation of Board
members by way of a special project committee appointed by the Board
to work with the District staff.
Jack Y. /Kubota
JYK/le
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TOTAL ANNUAL PRODUCTION
FOR FISCAL YEAR - IN ACRE FEET
TOTAL ANNUAL PRODUCTION
FOR FISCAL YEAR - IN ACRE FEET
(O
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CALENDAR YEAR
30
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CAPA< ;iTY OF
-25 CF
EXISTir^
. S.
CAPA< ;iTY OF
-25 CF
EXISTir^ G CONfi fECTIOIN
AT CAR LSBAD f ;;. 1
PEAK F LOW FOI
YEAR
i FISCAL
-AVERAG
FISC
E FLOW
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CALENDAR YEAR
•* BASED ON FIRST SIX MONTHS
PLATE NO. I
TRI-AGENCIES PIPELINE PROJECT
MEMORANDUM 1-15-75
REVISED 1-24-7,5
SAN FRANCISCO RESERVOIR
CITY OF OCEANSIDE
CARLSBAD MUNICIPAL
WATER DISTRICT
VISTA IRRIGATION
DISTRICT
PROJECT SUMMARY
AGENCY PIPELINE
CAF^CITY Cc.F.s.)
CURRENT SHARE OF
PROJECTED COSTS
(MILLIONS)
1972 SHARE OF
PROJECTED COSTS
(MILLIONS)
CARLSBAD M.W.D. 20.0 2.32 1.30
OCEANSIDE , CITY OF 18.0 0.96 0.46
VISTA l.D. 360 1.07 0.56
TOTALS 74.0 4.35 2.32
PLATE NO. H
TRI-AGENCIES PIPELINE PROJECT
MEMORANDUM 1-15-75
TRI-AGENCIES PIPELINE
ENGINEERING REPORT
FEBRUARY, 1972
EXCERPTS: Page
(1) Conclusions i & ii
(2) Recommendations iii
(3) Exhibit "A"
Estimated Cost By Reach 10
(4) Exhibit "B"
Table 1 - Population Study 11
Tri-Agencies Pipeline
Project Report
Memorandum of 1-15-75
Conclusions:
1. The future water needs of the participating agencies is such
that additional aqueduct service connection capacity will be
required by each party within the next three to five years.
2. The SDCVJA staff concurs with the conclusions of the Joint
Staff Report by Wilson-Kubota-Aldrich (See Reference 1) that
substantial savings in the cost of constructing facilities
will result if the three agencies cooperate in the construction
of a Tri-Agencies Pipeline rather than cch constructing a
separate facility. The approximate combined saving is
$1,088,000 ranging from $280,000 to $460,000 for each of the
agencies involved. Future maintenance costs also will be
less on one pipeline.
3. The route selected is the best available and takes into
account all known desired goals of the agencies as it relates
to:
a. Direct, shortest practicable route.
b. Utilization of existing right of way where possible,
or where this is not possible, parallels existing
rights of way and property lines.
c. Avoiding interference v^ith existing improvements.
d. Minimizing daiuage to environment, no excessive
side hill cuts will be made and all known landmarks
or archaeological features will be left intact.
4. Construction of a single pipeline instead of three separate
pipelines has many other advantages in addition to lower
first cost, including reduced inconvenience to the public
during construction, less damage or change to the environ-
ment and fewer points requiring access for maintenance.
5. Future operation of the Tri-Agencies pipeline will provide
needed flexibility, advantageous to the agencies and the
San Diego County Water Authority. Variations of daily rates
of flow can be regulated with one set of supervisory-tele-
metered controls and unneeded water diverted to storage in
Squires Reservoir or Pechstein Reservoir by the Authority
or the single agency designated as the system operator.
6. If any portion of the prospective service area of each agency
is shifted frora one agency to another for any reason, pro-
portional adjustments must be made to the sharing of capacity
and costs.
Recommendations:
1. Each participating agency should approve this Engineering
Study in principle and indicate its intention to proceed
with design and construction.
2. The agencies should review the proposed form of Agreement
for construction and operation of Water Transmission facil-
ities included in this report and request approval by its
respective legal advisors and if necessary revise it to
protect the interests of the parties and accomplish the
desired goals.
3. A time schedule should be developed for the project with
milestones to be reached by specific dates, such as:
a. Determining method of financing each agency's
share of the cost.
b. Schedule Bond Elections.
c. Select Design Engineer and allow approximately
nine months for surveys, rights of way acquisition,
design and preparation of plans and specifications.
d. Allow approximately fourteen months for construction,
111
EXHIBIT "A"
ESTIMATED COST BY REACH
o I
Reach
(See
Plate I)
Design
Cap. Q:
(cf .s.)
Length,
Feet
Size
Finished l.D.
Inches
Unit Cost
$/L.F.
Estimated
Total Cost
$
Capacity
Cost To
C.M.W.D.
Capacity
Cost To
City of Oc.
Capacity
Cost To
V.I.D.
A-B 73.8 3,650 42 55.00 200,700 54,400 48,900 97,400
B-D 68.8 7,430 39 52.00 386,400 112,300 101,100 173,000
D-E 52.6 3,500 33 44.00 154,000 58,600 52,700 42,700
E-G 52.6 3,700 33 44.00 162,800 61,900 55,700 45,200
G-P 38.0 4,500 30 40.00 180,000 94,700 85,300 —
P-N 20.0 17,600 24 33.00 580,800 580,800 — —
B-C 5.0 400 12 18.00 7,200 7,200
G-F 11.6 4,000 18 21.00 84,000 — — 84,000
G-H 20.0 2,300 24 33.00 75,900 75,900 —
P-Q 18.0 1,000 21 27.00 27,000 — 27,000 —
Sub-Total 1,858,800 1,038,600 370,700 449,500
R/W, Engineering, Control Structure & Escal. (25%) 464,700 259,650 92,675 112,375
GRAND TOTALS 2,323,500 1,298,250 463,375 561,875
Carlsbad
Oceanside
Vista
1960
9,963
27,070
20,234
EXHIBIT "B"
TABLE 1
POPULATION STUDY*
Population
1970
16,283
41,688
29,479
1971
17,444
44,234
31,078
10-Year
Average
Annual
% Increase
5.3
5.4
4.6
% Increase
One-Year
1970-1971
7.1
6.1
5.4
* Based on April 1, 1970 and July 1, 1971 published statistics of the
San Diego County Planning Department, population sub area 43-Carlsbad,
44-Oceanside, 47-Vista.
TABLE 2
COMPARISON OF PRESENT CAPACITY TO FORECAST OF
REQUIRED FUTURE CAPACITY
Carlsbad
Oceanside
Vista
Tri-Agency Connection
Approximate Capacity
Of Existing and Proposed
Aqueduct Connections
25.0*
38.2*
40.0
75
Peak Deiaand
Forecast of
Peak Demand
1971 1975 1980
20 25.0 25.0
25 25.0 30.0
32 33.4 33.4
— 23.5** 52.3**
77 106.9 140.7
* Capacity of Pipelines serving Carlsbad No. 1 and Oceanside No. 2 are limiting factors
** Flow in Tri-Agencies Pipeline will be distributed approximately 50% to Vista Irrigation
District; 25% to Carlsbad Municipal Water District and 25% to the City of Oceanside.
JOINT STAFF REPORT
ON THE
FEASIBILITY OF THE
TRI-CITY PIPELINE
1971
INDEX
Purpose of Joint Staff Study 1
Conclusions and Recommendations 1
v
Findings of Joint Staff Study
General Description of Agency Requirements 3
Peak Demand Conditions 5
Pressure Conditions Along Tri-City Pipeline 7
Filtered Water 8
Chlorination Procedures 8
Right of Way Considerations 9
Time Schedule for Completion of Tri-City Pipeline
Preliminary Cost Estimates 12
Financial Status of Each Agency 13
Federal Financial Assistance 15
Basic Considerations for Joint Powers Agreement 15
10
PURPOSE OF JOINT STAFF STUDY:
On September 28, 1970, representatives of the Vista Irrigation District,
Carlsbad Municipal Water District, the City of Oceanside, and San Marcos
County Water District, met to discuss the feasibility of these four agencies
deriving mutual benefits from the construction of a joint pipeline to in-
crease the supply of water to these agencies. As a result of that meeting,
it was determined that Vista, Carlsbad, and Oceanside, could possibly benefit
frora such a joint project, now called the Tri-City Pipeline. The staffs of
these three agencies have identified problem areas that are peculiar to each
individual agency, and have investigated possible solutions to these problems
in order that the three agencies could derive mutual benefits by the con-
struction of the Tri-City Pipeline. The findings of this study are presented
in this report for the consideration of the Governing Boards and the Councils
of Vista, Carlsbad, and Oceanside,
CONCLUSIONS AND RECOMMENDATIONS;
1, The results of this study indicate that Vista, Carlsbad, and Oceanside,
can sustain substantial cost savings by participating in the Tri-City
Pipeline, as compared to each agency constructing separate facilities
for increasing the supply of water to their respective distribution
systems.
2, Problem areas peculiar to an individual agency can be solved to the
satisfaction of that agency and to the other participating agencies.
3, RECOMMENDATION;
- 1 -
It is recommended that the three participating agencies jointly sponsor
a detailed engineering study to be conducted by a qualified consulting
engineer experienced in joint pipeline projects. This in depth study
would identify alternative routes for the pipeline project; determine
the engineering design requirements for each alternate route of the
Tri-City Pipeline, based on required capacities for each agency; provide
a cost estimate for each alternate route; and would provide a detailed
Joint Powers Agreement for the construction, operation and maintenance
of the Tri-City Pipeline. Particular attention should be paid to the
types of pipeline construction and design features that will provide
for the capability of the Tri-City Pipeline to serve the remote areas
that have not developed.
Subject to the specific negotiations with a qualified consulting engineer,
it is estimated that the detailed engineering study would cost approxi-
mately $15,000, It is recommended that the cost of this detailed engi-
neering study be shared equally between the participating agencies.
Accordingly, it is recommended that each agency would contribute $5,000
and that this amount be budgeted for the fiscal year 1971-1972 (July
1971-June 1972).
- 2 -
FINDINGS OF JOINT STAFF STUDY;
I. General Description of Agency Requirements;
(a) CARLSBAD;
The Carlsbad Municipal Water District currently supplies the
urban area of the City of Carlsbad with an existing 20 inch
high pressure water main located in El Camino Real, northerly
of Palomar Airport Road. This existing pipeline was constructed
in 1957 and was intended to serve as the first increment of
the supply to serve the more heavily populated area of the
District. As the urban area expands easterly the anticipated
need for additional pipeline capacity to the northwesterly
sector of the District becomes evident. Consequently, this
District has a need for additional pipeline capacity for water
delivered from the 2nd San Diego Aqueduct westerly into the
northerly half of the District, and includes high pressure water
service to the higher elevations, as well as high pressure ser-
vice into the City of Carlsbad, in the vicinity of Chestnut
Avenue and El Camino Real. The average daily flow requirements
is on the order of 20 cubic feet per second, and the specific
routing of the Tri-City Pipeline, between the 2nd San Diego
Aqueduct and Squires Dam Facility, is flexible,
(b) OCEANSIDE;
The City of Oceanside currently maintains a reservoir in the
- 3 -
the area of San Francisco Peak. Water is presently being pumped
to this reservoir to serve the Calaveras area. The City is
interested in obtaining water with sufficient pressure to serve
this general higher elevation surrounding the San Francisco
Peak Reservoir plus a supplemental supply to the remaining
water system. This would enable the City to also postpone
to some degree the construction of a parallel connection to
the San Diego County Water Authority 2nd Aqueduct east of the
City. Preliminary estimates indicate that the City of Oceanside
needs would be a minimum of 11 cfs capacity with a maximum
estimate of 18 cfs.
(c) VISTA;
Vista has possibly two separate needs for water from the Tri-
Clty Pipeline. One need is to be able to serve those lands
presently outside the District, but inside Bueno Colorado
Municipal Water District, particularly the Thibido-Dawson
lands. The second need is to backfeed the existing distribution
system in order to reduce the ultimate size of pipelines between
Pechstein Reservoir and service areas in the southern and
westerly portion of the District. Preliminary cost studies
indicate a substantial cost savings to the District by back-
feeding its existing system. Discussions have been held
with the Thibidos and Dawsons regarding their annexation to
the District and their participation in their fair share
of the cost of the Tri-City Pipeline. Presently, a study
- 4 -
is being conducted to determine financing methods in order
that they may be served from the Tri-City Pipeline. Pre-
liminary engineering studies indicate that Vista's demands
on the Tri-City Pipeline are 5 cubic feet per second to
backfeed the B system with the Tri-City Pipeline takeoff
located at approximately A Reservoir, 11.6 cfs to backfeed the
CX and C-CW systems with the Tri-City Pipeline takeoff located
at approximately Range Line R3 and R4W, service to the Dawson
property in the amount of 6.5 cfs, utilizing the same takeoff
for backfeeding the CX and C-CW systems, and a takeoff to
serve the Thibido land with a demand of 9.7 cfs, but sized for
11.9 cfs, located at approximately the southeast corner of
Section 6.
II, Peak Demand Conditions;
(a) CARLSBAD:
The Carlsbad Municipal Water District maintains the Squires
Dam Facility which is operated at an elevation range of 475
to 505 feet above sea level. It is anticipated that Squires
Dam will be used as the regulatory reservoir for the Tri-City
Pipeline. Accordingly, the Carlsbad District is in the best
position to take its 20 cubic feet per second daytime flow
and, in addition, take any excess flows of the fluctuating
dally demands of either, or both, the Vista and Oceanside
- 5 -
systems. Since all agencies may have a need for high pressure
water during daytime peaking conditions, it is anticipated
that there will be a large night time flow into Squires Dam
during the high demand season. The operations of the Carlsbad
system are such that this would pose no great difficulty for
the Carlsbad distribution system downstream of Squires Dam.
In addition, Carlsbad anticipates doubling, or perhaps tripling,
the available storage capacity at their Squires Dam Facility.
This being the case, there will be greater flexibility for
sustained periods of high demand where night time flows into
Squires Dam are likely to take place.
(b) OCEANSIDE;
The City of Oceanside may have to use Squires Dam as a regula-
tory reservoir to spill its excess water during the night
when demands of its system on the Tri-City Pipeline are less
than their daytime water orders from the Tri-City Pipeline.
(c) VISTA;
The existing service areas to be backfed by the Tri-City pipe-
line are several pressure zones below Pechstein Reservoir,
thereby precluding the use of this reservoir as a regulatory
reservoir. The topography in these service areas prohibits
the construction of additional reservoirs; therefore, the
takeoffs from the Tri-City Pipeline to serve these existing
- 6 -
service areas should be of the demand type, consisting of
essentially a meter and a regulator that will sustain pressures
in the existing service areas. The Tri-City Pipeline between
Vista's first takeoff and Squires Dam will have to be sized
large enough to transport all of Vista's daytime demand to
Squires Dam during the night when Vista's demands are reduced
to zero. Should the Thibido-Dawson lands annex to the District
and be served by the Tri-City Pipeline, the Tri-City Pipeline
between Vista's first takeoff and Squires Dam must also be
sized to transport these daytime demands to Squires Dam during
the night when demands are reduced to zero.
Ill, PRESSURE CONDITIONS ALONG TRI-CITY PIPELINE:
(a) CARLSBAD;
The Carlsbad District has several areas where the hydraulic
gradient should be in the order of 650 to 700 feet above sea
level. They currently operate one pumping station, and there
is one sector within the City of Carlsbad that must also
utilize pumping facilities for peak demands. This being the
situation, the District would want the hydraulic gradient of
the Tri-City Pipeline to be in the order of elevation 700
feet above sea level as it enters their district.
(b) OCEANSIDE;
If the hydraulic gradient line of the Tri-City Pipeline as
it enters the Carlsbad District is at 700 feet above sea
- 7 -
level, sufficient pressure will be available to the City
of Oceanside to meet its requirements.
(c) VISTA;
Vista's first proposed takeoff from the Tri-City Pipeline
is in the vicinity of A Reservoir and will primarily backfeed
the B System. The present static pressure in the B System
is 838 feet above sea level. Vista's second proposed takeoff
is in the vicinity of Range Line 3 and 4 West and will backfeed
the District's C-CW System, which presently has a static
pressure of 770 feet above sea level. Residual pressure in
the Tri-City Pipeline should be maintained above these static
pressures for adequate service to the District,
IV, FILTERED WATER;
All agencies are agreed that only filtered water from the 2nd San
Diego Aqueduct shall be transmitted through the Tri-City Pipeline
when filtered water becomes available,
V, CHLORINATION PROCEDURES;
Inasmuch as all three agencies have agreed that only filtered water
service is needed by our agencies, the question of adequate chlor-
ination of the public water supply relates to the method of operation
of our respective systems. In the event all three Districts take
- 8 -
water on demand from the Water Authority connection, it appears
that one jointly operated chlorination station at the aqueduct
takeoff would be the most practical and economical means of pro-
viding this post chlorination of filtered water delivered from the
2nd San Diego Aqueduct. Such a single jointly operated chlorination
station may eliminate the need for individual chlorination stations
along the Tri-City Pipeline at the various takeoffs. However, upon
taking delivery of this chlorinated water, each District may wish
to monitor their chlorine residuals at some strategic location
within their own system and subsequently provide third or fourth
levels of chlorination, depending upon the requirements of the
individual system. The Carlsbad Municipal Water District will be
operating the Squires Dam Facility as well as the proposed expansion
of that Facility, and consequently, any water drawn from these open
reservoirs will be chlorinated again by the Carlsbad District.
VI. RIGHT OF WAY CONSIDERATIONS;
For the construction and operation of the major transmission pipeline,
the basic right of way consideration should be for easements for the
pipeline facility, and zones of construction easements during the
initial construction phases. There may be instances where various
property owners would want the governing authority to acquire the
property in fee; however, these situations should be rare. In
locating the pipelines in the rather large undeveloped sectors between
the 2nd San Diego Aqueduct, and the respective service areas, it
would be appropriate to review fully, with the property owners, the
- 9 -
alternate locations of the pipelines with particular reference to
precise, planned alignments of local and county streets and highways,
as developed by the advanced planning of the San Diego County Road
Department. There are several instances where the advanced planning
is sufficiently precise so that a property owner has a knowledge as
to the recommended location of the street or highway. Consideration
should also be given to the vertical alignment so that there will
be a minimum of expensive relocation of pipelines when the highway
or street is actually constructed. There is also a secondary benefit
for construction of the pipeline at approximately the designed street
grade; namely, the usability of the pipeline road easements by patrol
and maintenance vehicles of the operating agency.
VII TIME SCHEDULE FOR COMPLETION OF TRI-CITY PIPELINE;
(a) CARLSBAD;
The Carlsbad District looks forward to the construction and
operation of its northerly transmission facilities within the
next five years; that is, fiscal year 1975-1976. The rapid
urbanization and increase in demand of water service to the
Carlsbad area has resulted in peak flow demands almost being
reached in its existing pipelines. The City of Carlsbad is
now constructing additional distribution storage reservoirs;
however, it will only be a matter of time before the peak flows
will be such that the existing pipelines will become overtaxed.
It is therefore important that the Tri-City Pipeline project
proceed in its planning stages, followed by Carlsbad's financing
- 10 -
program, which must be solidified so that the actual construction
of these facilities can be planned.
(b) OCEANSIDE;
The City of Oceanside can operate its present system in the
Calaveras area for some time without the need for a supple-
mental water supply. The need for supplemental water to the
remainder of the City's water system, however, becomes more
pressing each year. The City would, therefore, prefer to
reach the construction phase of the project as soon as possible.
It is anticipated that these needs will be satisfied with the
proposed time schedule.
(c) VISTA;
The completion of the Tri-City Pipeline does not appear
critical at the present time unless the Thibido-Dawson lands
should require service earlier than anticipated. Vista agrees
with the proposed time schedule. According to this schedule,
this District must know if the Thibido-Dawson lands will annex
to the District and participate in the construction of the
Tri-City Pipeline no later than January, 1973.
(d) PROPOSED TIME SCHEDULE;
Latest Completion Time
1, Completion of detailed engineering
study and development of estimated
construction costs January 1972
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2, Preparation and final agreement for
Joint Powers Agreement
3, Individual agencies develop financing
program, including bond elections,
if required
4, Completion of specific engineering
design and specifications
5, Award of Construction Contract for
pipeline construction
6, • Completion of Pipeline Project
July 1972
January 1973
September 1973
April 1974
July 1975
VIII PRELIMINARY COST ESTIMATES;
The following cost estimates are intended to show the relative
magnitude of costs involved for each agency. Detailed engineering
cost estimates will be provided by the engineering study to be
completed by January, 1972,
Cost of Tri-City Pipeline;
Oceanside's Proportionate Share of Cost;
Carlsbad's Proportionate Share of Cost:
Vista's Proportionate Share of Cost:
$1,544,000
389,000
798,000
357,000
The above cost estimates include the construction costs of the aqueduct
takeoff, the joint chlorination station at the aqueduct takeoff, the
Tri-City Pipeline between the 2nd San Diego Aqueduct and the terminus
at El Camino Real, a pipeline between the Tri-City Pipeline and
Squires Dam, and Tri-City Pipeline takeoffs, which include a small
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building, meters, valves, regulators, and chlorine residual analyzers.
These costs include a 207, allowance for engineering and legal expenses.
The above cost estimates do not include any right-of-way costs.
The above cost estimates are based on present construction costs, and
are tied to an Engineering News Record Index of 1520. It is antici-
pated that construction costs may escalate as much as 15% per year.
With a construction contract awarded in April, 1974, the above estimates
may escalate as much as 52%.
Each agency's costs are based on the percentage of ownership capacity
in each reach of the Tri-City pipeline. As an example, Oceanside will
require 18 cfs, Carlsbad will require 20 cfs and Vista will require 17
cfs for those reaches of the Tri-City Pipeline between the 2nd San Diego
Aqueduct and Squires Dam. The percentages of ownership capacity for
each agency are 32.7% for Oceanside, 36.4% for Carlsbad and 30.9% for
Vista. Each agency's construction costs were determined by applying
these percentages to the total construction costs for this portion of
the Tri-City Pipeline. This method was applied to other reaches of
the Tri-City Pipeline where different percentages of ownership capa-
cities occur. Vista's capacity of 17 cfs is for backfeeding its
existing distribution system only. Should Vista serve the Thibido-
Dawson properties, the cost of the Tri-City Pipeline, and accordingly
Vista's share of the costs of the Tri-City Pipeline, would increase.
IX FINANCIAL STATUS OF EACH AGENCY;
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(a) CARLSBAD;
The Carlsbad District must finance its share of the cost of
the Tri-City Pipeline, as well as other components of a major
expansion program for the District, with a General Obligation
Bond Issue. In addition to the needs of this transmission
capacity, the expansion of Squires Dam Facility, which has
been mentioned previously, would be involved along with the
additional pipelines and distribution storage reservoirs in
Improvement District #2.
(b) OCEANSIDE:
Currently the City of Oceanside is engaged in a water treatment
and storage study. This study proposes to utilize the under-
ground of the San Luis Rey Mission Basin for water treatment
and storage. Financing for the construction of this project
and the Tri-City Pipeline may be considered together in one
bond issue.
(c) VISTA;
At the present time, the largest and most important capital
expenditure is the construction of a Joint Filtration Plant
with the City of Escondido. Vista's portion of this project is
now estiraated to cost $2,725,000. A federal assistance grant
has been applied for in the amount of 50%. Should the District
be successful in obtaining a Federal Grant, and should the con-
struction costs of the Filtration Plant be equal to the estimated
costs, the District appears to be capable of financing its share
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of the Tri-City Pipeline without a Bond Issue. However,
should the Federal Grant be denied. Vista will be strained
to finance the construction of the Filtration Plant. In
this event. Vista's participation in the construction of
the Tri-City Pipeline would then require review, and Vista's
participation adjusted according to the availability of funds
for financing its share of the Tri-City Pipeline,
X, FEDERAL FINANCIAL ASSISTANCE;
Financial assistance from the Federal Government for the construction
of the Tri-City Pipeline should be investigated; however, for financial
planning purposes, it is recommended that agencies not rely on
Federal assistance,
XI, BASIC CONSIDERATIONS FOR JOINT POWERS AGREEMENT:
It is recommended that the participating agencies enter into a Joint
Powers Agreement for the construction, operation, and maintenance of
the Tri-City Pipeline, Each agency would acquire a specific capacity
right in the pipeline and would then share in the constructions costs
based upon its share of ownership. Each agency may order water from
the Tri-City Pipeline to meet its demands. An agency may order water
in excess of its ownership capacity rights by utilizing the excess
capacities of the other agencies, if excess capacity exists in the
Tri-City Pipeline. If the agency's water order exceeds its ownership
capacity rights and any surplus capacity, then that agency's water
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order will be reduced to its ownership capacity rights, plus the
excess capacity; but in no event will that agency's water order
be reduced below its ownership capacity rights.
It is recommended that the operation and maintenance costs be pro-
portioned between the participating agencies in proportion to each
agency's ownership capacity rights for each reach of the Tri-City
Pipeline, with the exception of the cost for the chlorination plant,
which would be proportioned between the agencies in proportion to
the water delivered to each agency annually. The type of costs to
be proportioned between the participating agencies, in proportion
to their ownership capacity rights, are:
(a) The cost of cathodic protection, if required.
(b) Consumable supplies, tools, and materials.
(c) Labor, including all payroll taxes and fringe benefits.
(d) The cost of repairs and outside services required for mainten-
ance and operation.
(e) Administrative costs directly chargeable to maintenance and oper-
ation of the facility.
(f) Landscape maintenance, if any.
If the cost of a single purchase or repair for the joint chlorination
station exceeds $3,500, such purchase or repair shall be considered
a replacement and it shall be proportioned to the agencies in pro-
portion to their ownership capacity rights.
Every connection to the Tri-City Pipeline would be metered, and any
water losses would be shared by the participating agencies in proportion
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to water used by each agency. A detailed accounting procedure will
be required to identify operation and maintenance costs in order that
these costs may be proportioned to the agency in accordance with
the above formulas for payment.
Under the Joint Powers Agreement, one agency would be appointed as
the administrator, and the duties would be specifically outlined as
agreed upon by all participating agencies. Because Carlsbad will
have the majority of the ownership capacity rights, and because
Carlsbad will be operating Squires Dam as the regulatory reservoir
for the Tri-City Pipeline, it is recommended that Carlsbad be desig-
nated as the administrator of the Tri-City Pipeline Project,
Respectfully submitted.
Th6mas M, Wilson, Engineer
Vista Irrigation District
/gt
J^ck Y,/Kubota, General Manager
Jarlsbad^'^Municipal Water District
Richard Aldrich, Water Superintendent
City of Oceanside
TMW/fd
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