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January 17, 1974
The Honorable Avery Garrett, Mayor
Members of the City Council
Subject: Capital Improvement Projects
Gentlemen:
Transmitted herewith is our engineering report on the Capital
Improvement Projects for the City of Renton.
We have examined the existing facilities in the Utility
Department and studied possible improvements. We have pre-
pared a series of capital improvement projects that will
upgrade the performance of the Utility Department.
As requested, we have incorporated these recommendations into
a proposed Bond Issue.
Very truly yours,
W&14‘Pes'4•4‘ 4‘'‘
Warren C. Gonnason, P.E.
Public Works Director
RCH:pmp
TABLE OF CONTENTS
Introductory Letter
Table of Contents
Water Main
24" Water Main from Talbot Hill to Mt. Olivet Reservoir
Springbrook
Springbrook Springs Expansion and Modernization
Water Mains
24" and 16" Replacement of Springbrook Transmission Water
Main
Utility Shops
Construction of New Water and Sewer Shop
Chlorination
Chlorination System Upgrading
Telemetry
Telemetering System Upgrading
Steel Mains
Replacement of Worn Out Steel Water Mains •
Sewer
Sanitary Sewer Program
Review
1
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24" WATERMAIN FROM TALBOT HILL TO MT. OLIVET RESERVOIR
Description:
A new 24" Ductile Iron Watermain linking Mt. Olivet and Talbot Reservoir.
Fran Mt. Olivet Tank through Cedar River Park to Wells 1, 2 and 8. The
line follows the north bank of the Cedar River, crossing at the Wells
Street bridge and extending south along Burnett Street to Grady Way,
thence south along Talbot Road to the Talbot Hill Reservoir.
Estimated Cost:
0 1. 2400 L.F. of 24" ductile iron water main from Well No. 8 to Mt. Olivet
tank $84,000.00
2. 3800 L.F. of 24" ductile iron water main from Well No. 1 to the inter-
section of Burnett Ave. S. and S. 2nd St. $136,000.00
3. 3900 L.F. of 24" ductile iron water main from the intersection of
Burnett Ave. S. and S. 2nd Street to the intersection of Talbot Rd. S.
and Rolling Hills Village Place $140,000.00
4. 1800 L.F. of 24" ductile iron water main from the intersection of
Puget Drive S. and Talbot Road S. to the Talbot Hill
Reservoir $ 63,000.00
Water Bond Issue - Total $423,000.00
The present water transmission system that supplies the Renton Water
System is fed with 14" and 16" watermains from Mt. Olivet and Talbot
Reservoirs.
An engineering review by CH2M Hill in 1968 revealed the weakness of the
present watermain trunk system. CH2M-Hill has given these suggestions
for improvement of the water system.
For the reasons given below, we recommend that the principle of a new 24-inch
diameter main linking Mt. Olivet and Talbot Reservoirs and Wells 1, 2 and 8 be
approved, the basic route from Mt. Olivet being Cedar River Park, north bank of
Cedar River, Wells Street, Grady Way and Talbot Road new highway.
1.The recent failure of the 16-inch trunk main beneath the freeway was a
warding of the vulnerability of the system. It has tentatively been decided
to extend the proposed 16-inch main for Well No. 8 towards Mt. Olivet to by-
pass the section over which the freeway was constructed.
2. The pipework and metering facilities at Wells 1 and 2 could be improved
and provision made for application of chlorine by installing a new trunk main
past the wells and parallel to the river.
3. A new highway is proposed parallel to the existing Benson Highway and cl< e
to Talbot Reservoirs. This work will involve major relocation of the existii
trunk main north from Talbot Reservoirs. Advantage could be taken of this
work to lay a new main as part of the roadworks.
4. A new main of large capacity linking Talbot Reservoirs, the Cedar River well
and Mt. Olivet reservoir would give flexibility and reliability of operation.
5. Exploratory drilling at Springbrook has not been very successful, and the ne
Well No. 8 has been drilled and equipped in Cedar River Park. It appears pro-
bably that additional wells will be drilled in the area of the Cedar River
alluvial fan, and that area will be the major source of supply.
6. It is to be effected that housing development will continue at Rolling Hill:-
and Tiffany Park, and the possibility of industrial development southeast of
the Longacres Race Track should always be borne in mind. Ability to deliver
water to the areas is important.
It is appreciated that the proposed 24-inch main represents considerable expenditu:
0 that must be spread over a number of years. However, we would quote from page 53
of the 1965 Municipal Water System report as follows:
"There are few water systems which can truly be said to have been provided
with mains which have proved oversized, and probably none which do not have
some mains which should have been installed in large diameters, even based
upon information available at the Lime of installation."
The Central Business District is clearly an area with deficiencies in water supply
Only with a new 24" trunk watermain will this area receive the level of service
and protection that is necessary.
2
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0 SPRINGBROOK SPRINGS EXPANSION AND MODERNIZATION
Description:
Expansion of Springbrook Springs by vertical well boring and engineering
0 studies. Renovation of areas damaged by 1971 floods.
Estimated Cost:
Springbrook Springs expansion and modernization
Water Bond Issue $100,000.00
Continued growth in the Renton area has caused a corresponding increase in
water usage. New sources must be developed or existing sources expanded.
The Utility Department has long recognized that Springbrook Springs are the
least costly source of water in the area. These artesian springs require
no pumping for delivery to the Renton Central Business District. The high
quality of this ground water requires only chlorination before delivery to
our customers.
Increasing production of these springs can be accomplished at a fraction of
the cost of developing a new well source. A high quality souce such as
Springbrook Springs is rare in South King County. Neglecting to fully
utilize the potential of Springbrook Springs would be an expensive mistake.
A cost comparison shows that development of the Springbrook Springs cost
approximately $3.80 per cubic feet per second. Comparative development
and operation of a new well source would cost approximately $10.00 per
cubic foot per second.
•
A series of CH2M-Hill engineering studies in 1965 and 1968 recommended expan-
sion of the Springbrook Springs as the most economical source of water in
the Renton area. The springs have a potential capacity greater than two
million gallons per day. In 1965 same capacity was added by horizontal
borings; however, the CH2M-Hill engineers recommended that a vertical well
be drilled to achieve the full potential of the springs.
A careful exploratory well should be bored to examine the geology of the soil
below the Springs. Care must be taken not to disturb the existing water
bearing layers.
An engineering analysis of the sub-surface geology would be made. Proper
placement of new collection galleries in accordance with hydrological studies
will eliminate much of the trial and error and high costs of present well
drilling.
The expansion program includes engineering studies of the geology and
exploratory drilling, specific improvements to collection galleries to
0 improve water flows and general cleanup of damaged areas fran the February
1971 flooding.
A series of developments around the Springbrook Springs watershed have
increased the potential for pollution of the water source. Construction of
schools, roads and subdivisions have increased the need for storm sewers in
1 the area. The Utility Department must divert this storm runoff around the
water shed and so a series of storm sewers must be constructed.
Springbrook Springs are in need of improvement in order to insure the
delivery of high quality, low cost water to Renton citizens.
0 Springbrook Springs expansion and modernization $100,000.00
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REPLACEMENT OF 20" WATERMAIN FROM SPRINGBROOK SPRINGS RESERVOIR TO
TALBOT RESERVOIR
Description:
Replacement of the existing 20" steel and asbestos concrete pipe.
' Installation of 24" Ductile Iron watermain from Springbrook Springs to
S. 43rd Street. Installation of 16" Ductile Iron watermain fran S. 43rd
Street to Talbot Hill Reservoir.
Estimated Costs:
6500 L.F. of 24" Ductile Iron watermain fran Springbrook Springs to
S. 43rd Street $227,500.00
8500 L.F. of 16" Ductile Iron Watermain fran S. 43rd St. to Talbot Hill
Reservoir $204,000.00
` Water Bond Issue, Total Costs $431,500.00
The 20" Springbrook to Talbot Reservoir was constructed of welded steel in
1930. The line began to develop leaks, and in 1953 approximately 2,900 feet
of the line was abandoned with the installation of asbestos cement line in
its place. During the same year the remaining 9,600 feet of steel line was
lined with cement.
The 20" water line was found to be obsolete in 1968 and replacement of this
water line with a 24" water main was planned. Short segments of the 20"
line were replaced with 24" D.I. pipe in conjunction with State Highway
Improvements.
The deteriorating condition of the 20" transmission line became apparent
fran a corrosion study report from CH2M-Hill in 1970.
The consultant engineers recommended that to protect the steel 20" line fran
rapid deterioration a corrosion protection scheme or replacement must begin.
The number of leaks in the line have increased and the transmission main is
approaching the end of its service life.
Upgrading the Springbrook Springs to the full potential capacity will exceed
the capacity of the existing 20" steel main. To continue to fully utilize
the low cost water supply at Springbrook, the proposed 24" and 16" lines
must be installed.
1
•
Replacement now at the Springbrook transmission line will be a substantial
savings to the utility customers. Postponement of improvements will add
unnecessary cost of repairing a deteriorated and worn-out watermain.
Resources would be diverted to maintain a line requiring replacement delay-
ing improvement to periods of still higher construction costs.
1
Installation at the new Springbrook transmission main will reduce mainten-
ance costs and assure continued delivery of one of the largest portions of
Renton's water supply.
The improved water system will add greater capacity to the Renton water
0 supply.
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CONSTRUCTION OF NEW WATER AND SEWER SHOP FACILITIES
1
Description:
Construction of new sewer and water shops and renovation of the storage
grounds area.
Estimated Cost:
Construction of a new water and sewer shop facility
1 Water Bond Issue $100,000.00
Sanitary Sewer Bond Issue $100,000.00
At present, the Utility Department Shops are inadequate for the department
to function efficiently. New facilities are needed to accommodate the
larger numbers of personnel and equipment. Overcrowding of our service
personnel in the present building is not conducive to good morale or high
efficiency.
r The monitoring equipment is now crowded into the only office in the build-
ing. Further additions to the recording equipment is anticipated and a
separate room is needed. Proper office space is also needed for record
keeping.
An office space should be provided with sufficient space that above mentioned
records can be kept in. The existing office space is cramped and is now
being shared with monitoring equipment. These functions should have separate
rooms.
The existing crew roam is a clutter of old tables and cabinets. There is
no door between the toilet facilities and the crew room. The crew roan
serves as the locker roan, lunch room, conference roan and lavatory for
111 the entire utility shop personnel. The crew roan is in need of enlargement
and renovation. The employees need an area for changing and storing their
work clothes. New showers, wash basins, and toilet facilities are needed.
Separate facilities for female employees or visitors are needed.
The present meter shop (repair) is crowded into one small roan, with limited
111 space to store meters. Meters are stacked in every available space, piled
on the floor in unsafe areas. More roan is needed to allow efficient
repair of the delicate water meters with sufficient storage space for
meters and parts.
The repair shop for heavier equipment is a poorly lit, wood and sheet metal
building incorporated into an old garage. The existing building lacks
proper ventilation, lighting, storage racks and welding facilities. The
0 present deficiencies in this building make it imperative that it be replaced.
The parts storage area is desperately overcrowded, equipment and parts are
stacked and hanging in every available space. An office space is needed for
record keeping and accounting, inside the store roan. Additional storage
space is necessary for smooth operation in the parts department. Separate
0 areas should be considered for storage and repair of water and sewage equip-
ment. The possibility of contaminating water equipment and parts with
sanitary sewage dirt exists at present.
The present Utility Shops are in sharp contrast to other shop facilities of
adjacent water districts of smaller size. The present facilities degrade
0 the neighborhood and have an unfavorable impact on the Cedar River. Instead
of an ugly, hazardous facility the Utility Shops should be an example of
compatability of necessary public activities in an urban setting.
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�� may' Fig. 8
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chlorination
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-11-I U ,i , 1 ‘ 1 Wt I
CHLORINATION SYSTEM REHABILITATION
Description
An engineering study to examine the need of chlorination facilities
at water sources and at various points in the distribution system.
Automation of the chlorination and monitoring equipment. Rebuilding
of Well #4 and its chlorination equipment. Construction of a new
chlorination building at Springbrook Springs.
Estimated Costs
Chlorination System Upgrading
Water Bond Issue $50,000.00
The present chlorination system has limited facilities and its
reliability is inadequate for the proper protection of water customers.
The Springbrook Springs have the only operational chlorination facility.
Wells 1, 2, 3 and 8 have no chlorination facility. Well #4 at one time
was the base chlorinator for the Highlands Reservoir, but has been
inoperable for four years. Studies have shown that the level of chlorine
in the present system is below desirable levels and is unreliable.
Tests in 1973 revealed that, in some areas of the water distribution
system, no chlorine residual is present. Because of the lack of proper
monitoring equipment and the manual operation of the chlorination system
at Springbrook Springs, there have been deficiencies in the water system
chlorination. A more extensive, automated system is required to provide
the level of protection needed for public safety and health.
The proposed chlorination system would include provisions for chlori-
nation facilities at all water sources. The Cedar River wells would
receive provisions for a chlorination facility. Well #4 would be rebuilt,
renovated and new chlorination facilities reinstalled. The Springbrook
Springs chlorination facility is now in operation; however, the unsafe
building and manual operation of the chlorination system would be
replaced by a new building and modern automated controls. Chlorination
at the sources, and modern monitoring equipment would achieve the levels
0 of protection required by the Department of Social and Health Services.
The initial chlorine treatment will not protect the water supply from
in-line pollution or contamination. Further chlorine installations and
monitoring facilities will be located as dictated by detailed engineering
studies.
p
Proper chlorination of the water system will assure a chlorine residual
0
in the service lines of our customers. This residual will prevent con-
tamination of the water mains by bacterial and viral infection.
A monitoring system will be required to analyze the efficiency of the
chlorination system as well as the reliability for protection of public
health. Several continuous chlorine meters would be scattered about
the system. Automation of the chlorination system will assure a proper
level of protection without the costs or risks of irregular manual
operation. Conversion to automatic chlorination equipment will free
service personnel for necessary maintenance and provide contaminate-free
water for the health and safety of City customers.
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Springbrook Chlorine Tank Shed. 4 s� 4
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Note manual operation of scale. r `'
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to, '' �+, a���' 1 i, ' ' r ► 0.' 4 1 OANGER I'1 }�►,,�'a c°�i •.
+ h "lad ''' r�♦ c,,,,,' . t,, <,0 r 4.0.*
AV*4ti
W Springbrook Chlorination Bldg
`' . `� ' 1..•Y .•0 ' '�" Note deterioratingcondition
y 1,t k 4 r ;.Y'act 4 �r YeOS r
,, 'aa111�, : 4 �74�i 1 +�ee',ft•.ttyi*. ' %I",., .Y�r of building.
t\•} e�`i`�`�111,,�. 3 ',�*. k�%��744 € . .� + 44��q♦ Y \
� �"; ���`'��� a t y��•�+ '�4j411♦�� k 1,.�44441���t� rr ne •,.1
'+tom ,.....:'1 y�,�t` .,; 5t\�1`p, i �. �' ot4•4�4i• r I i� VA*4 ‘Yo1 1,,-.' Al
►._v.. y� Mrs k ..' « ` ,.
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Springbrook Chlorination Bldg.
Interior View
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Fig. 16 'u
Well #4 - wellhead '
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chlorination . ' 1Mf. \
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--� YOUNGS
‘ 1 "
TELEMETERING SYSTEM UPGRADING
Description:
Upgrading and Modernization of the telemetry equipment for pump
and lift stations, chlorination information and water levels in
wells and reservoir.
Estimated Cost:
Telemetering System Upgrading -
Water Bond Issue . . $120,000.00
Sewer Bond Issue 80,000.00
TOTAL $200,000.00
The telemetering system is the brain of the operating program for
our lift and pump stations. This system records the operation of the
pump motors at various sites throughout Renton and can report when any
unit develops problems.
The telemetary system records the water levels in the wells and reservoir.
This indicates the storage capacity available in each reservoir, and the
condition of the ground water flow into the wells. The present telemetering
system does not transmit information about the chlorination of Springbrook
Springs.
Increases in the size of our utility operation has increased the amount of
information needed for our telemetry program. Now sophisticated methods of
information collection are necessary for our pump stations. Transmitting
more information on the pump motors will insure smooth operation. More in-
formation is needed for continuous recording of the water supply cholorination.
The improved telemetry equipment would notbe solely dependent on ground telephone
lines, but could use a radio network. The present mechanical recording equip-
ment would be replaced by electronic devices.
In conjunction with the expansion of the chlorination system, the telemetry
system would record information on the chlorination at the water sources. The
telemetry system would also record the quanity of residual chlorine at selected
points in the water distribution system.
The present antiquated telemetry system was reviewed by CH2MH in 1965. The
CH MH report recommended upgrading the present system. Since that time the
telemetry system has grown in size and the need for improvements has increased.
The engineering report recommends that the service of the telemetry equipment
S be done by a reputable local electronic's firm. The present maintenance is
performed by a self-trained employee of the utility department.
An improved telemetry system would increase the degree of reliability and
safety as well as assuring a high quality of public services.
1 ., Ii•a a I,P , .. L'•17 -
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YOUNGS
I I
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•
REPLACEMENT OF WORN-OUT STEEL WATER MAINS
Description:
Replacement of worn-out steel mains in selected areas.
Estimated Cost:
Steal Main Replacement
Water Bond Issue $274,000.00
Timely replacement of aged and obsolete water lines is a necessary part of
an efficient utility maintenance program. Because of budgetary limitations,
the replacement program has stopped until funds have became available.
Now a back log of failing water pipes demand replacement. Many lines in the
water system are beyond repair and water quality has deteriorated below the
desirable level .
There were many 2, 3 and 4 inch water pipes in use before the World War II
population boom. These lines are now inadequate to supply water for domestic
and fire use.
Upgrading of existing 2, 3, and 4 inch lines to 6 inch or as required
will normally be accomplished by a L.I.D. The adjacent property owners
will pay the cost of upgrading to the needed sizes while replacement will
be financed by the City.
A program of replacement of aged steel pipe would assure adequate supplies
of water to outlying areas and protect the health of public water users.
Project 7A
Project 7A would be the replacement of the existing 12" street water main
in Houser Way N. frau BronsonWay N. to N. 4th St. This pro;ect would
involve the installation of 1,700 feet of 16" ductile iron water main.
Total $ 30,000.00
Project 7B
Replace 6" steel main on Union Ave. N.E., north of N.E. 19th St. with 12"
cast iron.
Total $ 36,750.00
Project 7C
Project 7C is Park Ave. N. fran N.E. 26th Street to N.E. 40th Street. This
project is the replacement of existing 6" cast-iron main with 12" ductile
iron main as the main feeder line into the Kennydale area. Also included
would be an additional 1,000 feet of 6" steel replacement with 12" ductile-
iron main. Total project length would be 5,000 feet of 12" main.
Total $ 75,000.00
Project 7D
Project 7D would be in North 26th St. from Burnett Ave. N. to the east side
of Interstate 405 which also includes one crossing of Interstate 405. This
project would be replacing existing 6" steel water main with 12" ductile
iron main as part of a high-pressure tie line through the industrial area
downtown. Total project length would be 2, 200 feet at an estimated
installation cost of $33,000 plus $10,000 for the Interstate 405 crossing.
Total $ 43,000.00
Project 7E
Project 7E would be the replacement of existing 4" steel water mains in
84th Ave. S., S. 122nd Street, S. 123rd Street, and S. 123rd Place and
S. 124th Street in the West Hills area. This project involves the replace-
ment of approximately 4,600 LF of water main.
Total $ 55, 200.00
Project 7.F
Project 7F would be the replacement of the existing steel water main in the
N.E. 10th Lane area. Total length of the project would be 900 feet of
replacing 6" steel main.
Total $ 13,500.00
Project 7G
Replacement of small, inadequate mains and steel mains, President Park area.
Total $ 20,950.00
GRAND TOTAL $274,400.00
8
sewer
SANITARY SEWER IMPROVEMENTS
Description:
Sanitary Sewer T.V. Inspection
•
Grouting and Replacement:
Limited New Construction
Estimated Cost:
Sanitary Sewer Improvements
Sanitary Sewer Bond Issue . . . . . . . . . . . . . $320,000
The proposed sanitary sewer improvement project will initiate several necessary
construction projects. New federal regulations require that to qualify for
future federal monies, the sanitary sewers must be analyzed for any possible
infiltration on inflow of storm water or ground water.
Because of the high cost of treatment of sewer wastes, only sanitary waters
should be treated, not rain water or ground water. An effective sewer re-
habilitation project will reduce our payments to METRO for treatment by
excluding storm water from our sanitary sewers, and allow our system to meet
the new federal regulations.
A detailed engineering study will be financed under the Sewer Improvement
Project, which will indicate where sewer rehabilitation is necessary.
Closed circuit television equipment will be purchased to be used in the sewer
rehabilitation program and in general maintenance. Use of T.V. will allow close
monitoring of new construction, assuring a high level of workmanship. Sewer
lines can be inspected in use and defects not apparent when dry can be detected.
The T.V. inspection of sewer systems is an integral part of the sanitary sewer
program rehabilitation program.
Sanitary sewers indicated as needing rehabilitation will be replaced or rebuilt.
Replacement of selected sewer pipe may be necessitated by major failures in the
sewer pipes or by larger sewer flow than the pipe was designed for. Rehabili-
tation of selected sewer pipes would be necessitated by the failure of the pipe
joints, which allows ground water to leak into the sanitary sewer system. The
sanitary sewer system improvement project will repair or replace failing sanitary
sewers and allow some new construction of selected sewer mains.
review
1
PROPOSED WATER BOND ISSUE PROJECTS
1. (a) Install 2400 LF of 24" D.I. Water Main from Well #8 to
Mt. Olivet Tank @ $35/ft $ 84,000
(b) Install 3800 LF of 24" D.I. Water Main from Well #1 to
the Intersection of Burnett Ave. S. and S. 2nd St.
@ $36/ft 136,000
(c) Install 3900 LF of 24" D.I. Water Main from the Inter-
section of Burnett Ave. S. and S. 2nd St. to the
Intersection of Talbot Road S. and Rolling Hills
Village Place @ $36/ft 140,000
(e) Install 1800 LF of 24" D.I. Water Main from the Inter-
section of Puget Drive S. and Talbot Road S. to the
Talbot Hill Reservoir @ $35/ft 63,000
TOTAL ESTIMATED COST $ 423,800
The above projects are required to provide more capacity
and reliability in the transmission of water between the
Talbot Hill Reservoir and the Mt. Olivet Reservoir. This
will also provide better transmission of water from our well
source of supply to the business and industrial areas.
2. Springbrook Springs Expansion and Modernization $ 100,000
3. Install 6500 LF of 24" D.I. Water Main from Springbrook Springs
Reservoir to the Intersection of S. 43rd St. and Springbrook
Rd. @ $35/ft $ 227,500
This Project is required to replace the existing 20" Stl
water main which was installed in approximately 1928 and
now is in sore need of replacement. The existing main is
installed quite shallow in the roadway.
Install 8500 LF of 16" D.I. Water Main from the Intersection
of S. 43rd St. to Talbot Hill Reservoir @ $24/ft $ 204,000
This Project is required to replace some of the same 20"
Stl water main and some 20" AC water main which is also
buried quite shallow in places and is in need of replace-
ment.
PROPOSED WATER BOND ISSUE PROJECTS Page 2
4. Construction of a New Water and Sewer Shop Facility $ 100,000
The present structure is totally inadequate for the function
it is supposed to fill. It is extremely small for the per-
sonnel and equipment which is presently housed there.
5. Chlorination System Upgrading $ 50,000
The existing Chlorination System is inadequate to do the
job properly, especially with the increased State Board
of Health requirements for the Public Water Systems.
6. Telemetering System Upgrading $ 120,000
The existing telemetering system is beginning to be quite
antiquated and should be replaced with a more modern method
of supervisory control.
7. Replacement of Worn-Out Steel Mains $ 274,000
NOTE: There shall be provided and installed other un-
specified facilities for the general improvement
of the water system.
$1,500,000
PROPOSED SANITARY SEWER BOND ISSUE
Sanitary Sewer Portion of Telemetering System Upgrading $ 80,000
Sanitary Sewer Portion of Water & Sewer Shop Facility 100,000
8. Sanitary Sewer Improvements 320,000
$ 500,000