Water & Sewer Condition & Operations 1987-1991
ENGINEERING REPORT
The City of Salina, Kansas
Water and Sewage Utility
Conditions and Operations Report
1987 - 1991
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I INllSOIV
& COMPANY
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ENGINEERING REPORT
The City of Salina, Kansas
Water and Sewage Utility
Conditions and Operations Report
1987 - 1991
City Commissioners
Stephen C. Ryan, Mayor
Carol Beggs
Dr. Peter Brungardt
John Divine
Joseph A. Warner
City Manager
Dennis Kissinger
Director of Engineering &: Utilities
Don Hoff, P .E.
Address all communication
regarding this work to:
""." II"", I",
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Wilson &: Company
P.O. Box 1640
Salina, Kansas 67402-1640
(913) 827-0433
December 1991
(91-D78)
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TABLE OF CONTENTS
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~age_No.
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Introduction
Purpose
Scope
Water and Sewage Utility Organization
Figure 1
Figure 2
Figure 3
Major Capital Improvements, 1987-1991
Proposed Capital Improvements, 1992-1993
Water Division
Wastewater Division
Water and Sewage Utility Maintenance
Water Division
Wastewater Division
Water and Sewer Extensions
Summary and Recommendations
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follows 2
follows 2
follows 2
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INTRODUCTION
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Purpose
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City of Salina Ordinance No. 87-9202, adopted 21 September 1987, provides
for the issuance of Combined Water and Sewage System Revenue Bonds. This
ordinance contains in part the following covenant:
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"(d) Engineering Report. At least once in every two
years the City will employ a Consulting Engineer and
will cause such Consulting Engineer or engineers to make
an examination and report on the condition and operation
of the City's Water and Sewage Utility, such report to
include recommendations as to any changes in such opera-
tion deemed desirable. Such report shall also make ref-
erence to any unusual or extraordinary items of
maintenance and repair and any extensions or improve-
ments that may be needed in the ensuing year. A copy of
each such report will be filed in the office of the City
Clerk and duplicate copies thereof shall be mailed
promptly to the Underwriters."
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This report is prepared in accordance with these requirements.
Scope
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This Conditions and Operations Report for the City of Salina's Water and
Sewage Utility presents a summary of water and sewer system construction and
maintenance programs completed during the past five years (1987-1991) and
projected for the next two years (1992-1993). The report makes reference to
any unusual or extraordinary items of maintenance and repair and any exten-
sions or improvements that may be needed in the next three years.
Recommendations regarding any changes deemed desirable in the operations of
the water and sewer system have been included. This report does not include
any analysis of the financial condition or operating revenues of the Water
and Sewage Utility.
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WATER AND SEWAGE UTILITY ORGANIZATION
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The Water and Sewage Utility falls under the direction of the Director of
Engineering and Utilities. The utility is currently comprised of three sep-
arate divisions, each headed by a division superintendent. These divisions
are as follows:
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Water Division - responsible for the operation of all municipal water
supply, treatment, distribution, and storage systems.
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. Wastewater Division - responsible for the operation of all municipal
wastewater collection, treatment and disposal facilities.
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. Pretreatment Division - responsible for the administration of the
City's industrial wastewater pretreatment program.
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The Pretreatment Division is presently staffed by one person. Necessary
equipment and facilities are utilized from the Wastewater Division. This
division is to be merged into the Wastewater Division by 1993, and therefore
is not further addressed in this report.
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The following organizational charts illustrate the present structure of the
City's Water and Sewage Utility.
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City of Salina
Water and Sewage Utility
City Manager
Director of
Engineering and Utilities
Water and Sewage Utility
Water Pretreatment * Wastewater
Division Division .. .. Division
*Pretreatment Division to be merged into the Wastewater Division in 1993.
Figure 1
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Water Division
Water
Superintendent
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Water Lab Water
Distribution Clerk Plant
Technician
Supervisor Supervisor
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Service Service Water
Orders Maintenance Plant
(6) (3) (14)
Distribution
(5)
( ) Number of Personnel
Figure 2
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Wastewater Division
Wastewater
Superintendent
Wastewater Lab Wastewater
Plant Maintenance
Technician
Supervisor Supervisor
Wastewater Maintenance
Plant
Workers
Operators
(6)
(8)
( ) Number of Personnel
Figure 3
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MAJOR CAPITAL IMPROVEMENTS, 1987-1991
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The following capital improvement projects were completed for the Water and
Sewer Utility during the period of 1987 through 1991.
Water and Sanitary Sewer Extensions - Georgetown
and replat of Georgetown; Mayfair Addition;
Twin Oaks II Subdivision; Wallerius Addition
No.2; Key Acres No.2 $ 179,245
Year
Project
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1987
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Water Treatment Plant - Filter Modifications
1988
Sanitary Sewer Extension - Airport Park
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Water and Sanitary Sewer Extensions -
Country Club Heights No. 5 Addition;
Country Hills Addition; Eastridge Addition;
Mayfair Addition; Meyer Addition;
Pacific Addition
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Water Supply Facilities, Phase I -
24-inch raw water transmission ma~n
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Water Supply Facilities, Phase II -
River intake, pump station, desilting
basin improvements
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Roofing Improvements - Water Treatment Plant
1989
River Redevelopment, Phase I -
Aquifer recharge
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High Service Pumping Station -
Water Treatment Plant
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Water and Sewer Extensions - Country Club
No.4 Addition; Country Oak, Mariposa, Meyer,
and Waters Additions
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Water and Sanitary Sewer Extension -
East Crawford Recreation Area
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1990
Offset Well No. 13
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Digester Roof Installation -
Wastewater Treatment Plant
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Manhole and Water Valve Box Regrading
Water Main Improvements - Loop dead-end ma~ns
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Cost
$1,497,168
$ 31,339
$ 91,918
$ 386,891
$1,367,518
$ 42,766
$ 64,350
$1,589,105
$ 526,547
$ 145,082
$ 24,500
$ 63,200
$ 24,955
$ 42,437
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Year
Project
Cost
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1990
(cont'd)
Water Tower painting - 6 of 7 towers; interior
and exterior (project has not reached final
completion)
$ 458,700 (est.)
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1991
River Redevelopment, Phase II - aquifer recharge $
22,994
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Subdivision Utility Improvements
$ 49,000
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Iron Avenue Water Main Improvements - (Project
has not reached final completion)
$ 112,538 (est.)
TOTAL, 1987-1991
$6, 720,253
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In addition to these major capital improvements, annual capital expenditures
by the Water and Sewage Utility also include a variety of items needed for
the operation of all divisions of the utility. These items include office
and laboratory equipment and supplies; service and maintenance tools, equip-
ment and vehicles; replacement parts and equipment; etc.
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PROPOSED CAPITAL IMPROVEMENTS, 1992-1993
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The following major capital improvement projects are proposed for the Water
and Sewage Utility for the two-year period of 1992-1993.
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Water Division
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. Construction of a 0.5 million gallon elevated water tower (Markley
tower), approximately two miles of transmission main, and a booster
pump station to serve existing and future developments in the southeast
area of the City.
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. Construction of a new radio telemetry system to link the City's 15
wells, a river intake pump station, high service pumping station, seven
water towers, and a booster pump station to a master control center.
The system will monitor flow rates, levels, equipment status and
alarms, and will provide start/stop control for all remote equipment.
A central computer will provide graphic displays, event and alarm log-
ging and daily and monthly reports. The system will also include new
flow metering facilities at all of the wells.
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. Replacement of chemical lime feeders and slakers at the Water Treatment
Plant.
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Installation of chlorine residual and turbidity monitoring equipment at
the Water Treatment Plant in compliance with the Surface Water
Treatment Rule.
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. Re-roof well houses.
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Wastewater Division
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. Construction of major improvements at Wastewater Treatment Plant 1,
including upgrading of existing treatment facilities and the addition
of new advanced treatment facilities for nitrification. These improve-
ments are necessary to meet ammonia limits established in the City's
new NPDES permit, effective from 9 July 1991 through 27 May 1996.
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This project is currently advertised for bid on 16 January 1992.
Construction ~s to be complete by the end of 1993.
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. Construction of a major interceptor sewer system consisting of approx~-
mately 6.7 miles of gravity sewer, 3.3 miles of force main and three
sewage lift stations. This system will convey wastewater from the
obsolete facilities at Wastewater Treatment Plant 2 to Wastewater
Treatment Plant 1. Plant 2 will be abandoned. Flows from existing and
proposed development areas adjacent to and south of Magnolia Road will
be diverted to the proposed interceptor, thus relieving overloads on
existing interceptors. The proposed interceptor will also provide
future sewer service for planned growth areas in the eastern part of
the City.
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This project ~s currently under design. Construction is scheduled to
be completed by the end of 1993 to coincide with the Wastewater
Treatment Plant 1 improvements.
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. Construction of a new sewage lift station on west Cral~ford Avenue to
relieve overloads on existing gravity sewers due to recent commercial
development in this area. A force main to an existing lift station at
Sunset Plaza was installed during recent street improvements on west
Crawford Avenue.
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. Construction of a new equipment storage and maintenance facility at
Wastewater Treatment Plant 1.
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WATER AND SEWAGE UTILITY MAINTENANCE
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Water Division
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Maintenance, repair and general upkeep of the City water system is provided
on a routine basis by Water Division personnel. Repairs of water main leaks
and breaks are made in a timely manner as they are reported to minimize per-
sonal and property damage, and to provide for public safety. Lead service
lines, as well as old galvanized service lines, are replaced with copper as
they are discovered; i.e I during repairs or new construction. Inoperative
system valves are also replaced when found.
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Periodic flushing of water mains is performed throughout the system.
City attempts to flush the entire distribution system once per year.
The
Areas
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experiencing occasional water quality problems (e.g. taste and odors,
"rusty" water, etc.) are flushed on a more frequent basis.
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Customer water meters are tested and repaired or replaced as required. In
addition, a meter change-out program provides for the routine replacement of
older water meters with refurbished meters throughout the system. The Water
Division currently changes out about 1000 meters per year under this
program. This number is proposed to be increased to approximately 2000
meters per year in 1992. This rate will provide for complete change-out of
the entire system (17,000+ meters) in approximately 8.5 to 9 years.
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Maintenance and repair of the City's elevated steel water towers is cur-
rently done as needed. However, the Water Division proposes to initiate a
program of biennial tank cleaning, inspection and touch-up painting in 1993
or 1994. Major interior and exterior repainting of each water tower will be
as recommended by the biennial inspection.
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Routine preventive maintenance is performed on water treatment plant equlp-
ment and water well equipment in accordance with equipment manufacturers
recommendations and maintenance staff experience. Repair or replacement of
equipment is made as required to keep the water supply and treatment facili-
ties operational with a minimum of down time.
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An annual program of well and pump maintenance provides for such things as
well acidization and pump rehabilitation for up to three wells per year.
Specific capacity tests are conducted on each well every five years to moni-
tor production efficiencies. These tests were last performed in 1990.
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No unusual or extraordinary items of maintenance or repair requiring immedi-
ate attention were noted in the water system. However, several items will
require continued monitoring and evaluation by the City
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ane such item involves traces of vac contaminants occurring in several water
supply wells. At the present time one well has been taken out of service
due to vac levels which periodically exceed allowable limits. Small traces
of vac's have also appeared in five other wells. These wells are still in
normal operation and are being blended with other water supplies. Thus far
this problem has not impaired the City's ability to deliver water to the
public which meets all current water quality standards.
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The Kansas Department of Health and Environment (KDHE) is currently conduct-
lng an investigation at the contaminated well sites to determine the cause
and extent of the contamination and identify probable "responsible parties".
Based on the results of this investigation, some type of remedial action may
be recommended in the future. It is not anticipated this will occur within
the next two years.
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Another item which will need to be addressed in the future is the condition
of the water treatment plant. The current plant is well maintained and
operated and capable of supplying present daily demands. Recent improve-
ments to the filter plant and river desilting basin and the addition of new
high service pumping facilities have greatly enhanced the condition of the
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plant in these areas. However much of the equipment in the rest of the
plant has surpassed its expected useful life and is in need of replacement.
Maintenance and repair requirements for these items are steadily increasing.
Of particular note is the secondary settling basin which is leaking and is
of insufficient capacity for current and future plant flows. Rehabilitation
of the chlorine storage and feed system throughout the plant will also be
required to meet new codes. Other modifications may be necessary to meet
new requirements of the Surface Water Treatment Rule.
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The City is currently considering options for future rehabilitation and
expansion of the existing treatment plant or upgrading the current facili-
ties at the present capacity and constructing additional treatment facili-
ties south of the City in the vicinity of a proposed new wellfield.
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Wastewater Division
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Wastewater Division maintenance personnel provide for the regular mainte-
nance and repair of the sanitary sewer collection system, collection system
lift stations and the wastewater treatment facilities.
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Repair and replacement of sanitary sewer collection lines is done as
required. In addition, root cutting and cleaning and sewer line flushing ~s
performed on a regular basis in known problem areas. Line stoppages most
often occur in areas of flat grade or excessive grease discharges to the
sewer. This problem is anticipated to diminish to some extent when monitor-
ing for grease from commercial establishments, such as restaurants, is begun
under the City's present wastewater pretreatment program. Other items of
collection system maintenance include periodic TV inspection of sewer lines
to investigate a suspected problem, and manhole regrading, as required, due
to street grade modifications.
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Routine maintenance and upkeep of sewage lift station equipment is done on a
regular basis. Maintenance crews check all 53 lift stations each work day.
Approximately half of the stations are checked on weekends and holidays.
Repairs are performed as needed. Maintenance requirements continue to
increase as the lift stations get older.
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Preventive maintenance is performed at the wastewater treatment plants based
on maintenance staff experience and equipment manufacturers recommendations.
Repairs and replacement of equipment are made as required. Replacement of
clarifier drive mechanisms at Plant 1 is scheduled to begin in the next 2 to
3 years. All other items needing attention will be taken care of in the
major wastewater treatment plant improvement project which will be under
contract in early 1992. Wastewater Treatment Plant 2 in the Schilling
industrial area has exceeded its useful life and will be abandoned when the
proposed interceptor sewer project described previously is completed in late
1993.
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No unusual or extraordinary items of maintenance or repa~r currently exist
in the City's wastewater collection and treatment system. No significant
problems are anticipated in the next two years.
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WATER AND SEWER EXTENSIONS
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No major water or sewer system expansions are planned by the City in the
next two years. The City will continue to provide water and sewer exten-
sions to new developments as necessary. Current City policy requires the
developer to provide the engineering design and construction plans for the
desired extension. Construction bids are let by the City. The developer is
required to pay for 20 percent of the cost up front with the City financing
the remainder. Upon completion, this amount is then repaid to the City by
the developer in a lump sum payment or through a la-year special assessment.
However, the City will pay the cost difference for the line size required by
the City if larger than the line size required solely to serve the
development.
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Design and construction of water and sewer extensions must be in accordance
with City standards. Upon completion, the water and sewer systems in a new
development are deeded to the City for future maintenance and repairs.
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SUMMARY AND RECOMMENDATIONS
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Based on this review of the City of Salina's water and sewer systems, the
overall conditions and operations of these systems are judged to be adequate
to provide a satisfactory level of service to the customers. As such no
significant changes in the operations of these systems are deemed necessary
in the next two years.
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Capital improvements made to the water and sewer systems since 1987 have
greatly upgraded the condition of both systems. Future improvements planned
through 1993 will further enhance each system's overall condition and
operation. The City should implement these improvements in accordance with
their established capital improvement plans. These plans should be periodi-
cally reviewed and updated as necessary to address additional system needs
as they arise.
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The preventive maintenance programs currently in place are effective and are
proposed to be continued in the future. No unusual or extraordinary items
of maintenance or repair were noted with either system.
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The problem of periodic occurrences of VOC's in several water supply wells
should continue to be monitored. Thus far the City's ability to meet cur-
rent water quality standards and to provide daily system demands has not
been significantly impaired. The City should consider development and
implementation of a wellhead protection program at some time in the future
to protect current and future groundwater supplies from further
contamination.
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Due to increasing demands, the City will have to continue its efforts to
expand its water supplies in order to meet projected future needs. Options
such as obtaining additional surface water from Kanopolis Lake, developing
the proposed new wellfield in the Smoky Hill valley south of Salina, partic-
ipation in Public Wholesale Water Supply District No. 10, and others should
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continue to be investigated. The City should consider developing a water
conservation and drought contingency plan to help preserve existing water
supplies.
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Rehabilitation and expansion of the City's water treatment facilities will
also be necessary in the future. Options for accomplishing this at the
existing treatment plant site or developing additional treatment capacity at
a new site are currently being considered by the City.
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Compliance with new drinking water standards pursuant to the 1986 amendments
of the Federal Safe Drinking Water Act will require continued effort by the
City. The water system is presently meeting all current requirements. New
regulations will be addressed as they are developed by the state and EPA.
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No significant problems are anticipated in the next two years with the sani-
tary sewer system. Major improvements to the wastewater plant to be com-
pleted by the end of 1993 will increase the City's wastewater treatment
capabilities. Unless wastewater characteristics change dramatically, the
upgraded treatment plant will be able to meet the effluent requirements for
BOD, suspended solids, and ammonia established in the City's current NPDES
permit. This permit is effective from 9 July 1991 through 27 May 1996. The
capability to meet future effluent quality standards will have to be evalu-
ated as new requirements are developed.
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The completion of the proposed interceptor sewer system, also scheduled for
late 1993, will allow the obsolete facilities at Wastewater Treatment Plant
No. 2 to be abandoned and will provide sewer service for current and future
growth areas south and east of the City.
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