HomeMy Public PortalAbout2003.07.01 SRF Loan Request TOOTHMAN-ORTON ENGINEERING COMPANY
CONSULTING ENGINEERS,SURVEYORS AND PLANNERS
9777 CHINDEN BOULEVARD
BOISE,IDAHO 83714-2008
208-323-2288 • FAX 208-323-2399
boise®toengrco.com
July 1, 2003
Mr. Robert Strope
City Manager
P. O. Box 986
McCall, ID 83638
RE: WATER MINIMUM PROJECT NEEDS
Dear Mr. Strope:
Pursuant to your request, I have reviewed the 1993 revision and the 2001 revision to the water
plan documents and offer the following opinion regarding the status of the Minimum Project
Improvements.
In 1993 the City of McCall adopted and began implementation of a Water System Master Plan,
1993 Revision. That Master Plan developed a series of water system improvement needs for the
next 20-years and beyond. The 1993 Revision was also submitted to and reviewed by the Idaho
Division of Environmental Quality (DEQ). Subsequently, the project improvements were
prioritized into three categories. The Master Plan Improvements, the largest of the categories,
were the improvements necessary to meet all the goals and policies of the Master Plan. The
Priority Improvements were a portion of the needs prioritized only to meet the fire protection and
public health and safety needs identified in the Master Plan. The Minimum Project
Improvements included those facilities from the Priority Improvement Plan that were most
urgently needed and that would not exceed the $10,000,000 available funding.
The Master Plan Improvements included approximately $17,000,000 in water system features.
These were a full response to the design goals described in the 1993 Revision. Those goals are:
1. Size components for fire demands of approximately 1000 gpm in
residential neighborhoods and a minimum of 1500 gpm in commercial
areas in compliance with the Uniform Fire Code. In addition, 1984
fire demand ratings recommended by the Idaho Survey and Rating
Bureau were used as goals for specific existing structures.
2. Size components to comply with Idaho Department of Health and
Welfare, Division of Environmental Quality standards.
R E C E I V E U
J U L 0 2 2003
BOISE•COEUR d'ALENE
TOOTHMAN-ORTON ENGINEERING COMPANY
Mr. Robert Strope, City Manager
City of Mccall
July 1, 2003
Page 2
a. Treatment plants will be sized for peak day demand.
b. Storage will be sized to accommodate peak hourly demands
plus a 3000 gpm, three-four hour fire demand reserve.
C. Sustain minimum system pressures of 35 psi during periods
of peak hourly demand and 60 psi under peak day demand.
d. Pipes and other components will be sized to distribute fire
demand goals plus peak day demands while sustaining
minimum pressures of 20 psi at the point of delivery.
e. Plan for minimum hydrant lateral sizes of six-inch
diameter.
3. Provide redundancy in all key components of the water system.
Specific components of concern include:
a. Intake lines and intake pump stations
b. Raw water lines to the treatment plant
c. River crossings
d. Treated water storage
e. Looping of distribution network
4. Plan for a treatment facility that meets current regulations and can be
easily modified to meet proposed future regulations. The treatment
facility should be easily expandable, cost effective, efficient, and
operator friendly.
Appendix D of the 1993 Revision, pages D-1 through D-11 describe the Master Plan
Improvements in itemized detail.
The Priority Improvements were a first cut of the Master Plan Improvements with the focus on
completing the water supply facility, the treatment facility, isolating the golf course, completing
the storage tanks and a skeletal set of distribution system improvements. This set of
improvements meet many, but not all, of the goals listed above. The elements dropped from the
Master Plan Improvements included distribution system elements, west storage and the loss of
some operational flexibility. The priority improvements totaled approximately $13,000,000 and
are described in itemized detail on pages D-12 through D-17, Appendix D of the 1993 Revision.
TOOTHMAN-ORTON ENGINEERING COMPANY
Mr. Robert Strope, City Manager
City of Mccall
July 1, 2003
Page 3
The Minimum Project includes the most important needs limited by a $10,000,000 budget.
Those generally include the water treatment plant, east storage, the intake station and some
distribution upgrades. The Minimum Distribution is described in Appendix D of the Master Plan
Revisions, pages D-18 through D-22 and are summarized below.
MINIMUM IMPROVEMENTS DESCRIPTIONS
ELEMENT DESCRIPTION ELEMENT STATUS
1. Water system improvements completed in 1990 and 1991, Completed
financed through a lease repurchase agreement.
2. Future planning and study of water system improvements. Completed
3. Water treatment plant located in the Spring Mountain Completed with modified
Ranch development area, including chemical chlorine contact.
pretreatment, flocculation, filtration, chlorine contact
storage,pumps, controls and land acquisition.
4. Upgrade the existing Lake Street and Davis Beach pump Completed(except the new
stations for raw water pumping, including replacement of intake was not needed)
the Davis Beach pump station intake line.
5. Convert the existing Shore Lodge pump station to an in- Completed
line booster pump.
6. Install a 16-inch raw water supply line from Davis Beach Completed
pump station, east on Lick Creek Road, south on Davis
Avenue to a point north of Fairway Drive, then eastward
through the golf course and Spring Mountain Ranch
development area to the proposed water treatment plant.
7. Install a 16-inch raw water supply line from Lake Street Completed
pump station, east on Pine Street and Wooley Avenue,
north through the golf course intersecting the proposed
raw water supply line from Da-,,,is Beach.
8. Install a 16-inch treated water line from the proposed Not Completed(see
water treatment plant eastward to the proposed water explanation below)
storage tank.
9. Construct a 600,000 gallon buried concrete water storage Not Completed(see
tank east of the Spring Mountain Ranch development area, explanation below)
including land acquisition.
10. Install a 12-inch water main from the proposed water Completed
treatment plant to the existing water distribution system
through the Spring Mountain Ranch development area,
along Thompson Avenue to 4th Street.
11. Construct a pressure reducing station along the 12-inch Completed
transmission main described above.
TOOTHMAN-ORTON ENGINEERING COMPANY
Mr. Robert Strope, City Manager
City of Mccall
July 1, 2003
Page 4
12. Install a 10-inch water main to replace the existing 6-inch Completed
water main on Mission Street and West Lake Street from
the intersection of Mission Street and Park Street, north
along Mission Street to West Lake Street; west along
West Lake Street to Mather Road.
13. Install an 8-inch water main to replace the existing water Completed
main along Deinhard Lane from Thula Street to
Commerce Street.
14. Install an 8-inch water main to replace the water line from Completed
the intersection of 4`h Street and Lenora Street, east on
Lenora Street to Roosevelt Avenue, north on Roosevelt
Avenue to Pine Street. Includes demolition of the
abandoned water tower and refurbishment of site.
15. Extend water line on Mill Road with an 8-inch water Completed
main,north of Hemlock approximately 2501.f.
16. Install water meters at existing services and purchase an Completed
automatic meter reading system.
17. Disconnect existing golf course irrigation system from Completed
water distribution system and install 8- and 12-inch treated
water mains from the clubhouse around the east side of the
golf course to Lick Creek Road.
18. Construct a pond to be filled from the proposed raw water Completed
mains. Construct a pump station to pump from the
proposed pond into the existing golf course irrigation
system.
19. Rehabilitate existing irrigation system. Completed
MINIMUM PROJECT REVIEW AND ;MODIFICATION DECEMBER 1993:
After the 1993 revisions were completed and a bond issue was passed, the City of McCall
submitted the 1993 revision for peer review. A peer review was conducted in December 1993.
One change to the Minimum Project survived the peer review process. That modification was to
delay the east side storage reservoir and enlarge the chlorine contact tank at the water treatment
plant site from approximately 210,000 gallons to approximately 600,000 gallons.
Although not specifically listed as a goal in the 1993 Revisions, the Minimum Project also
included a strategy of using any new or reserve funding to enhance fire flow to the area on the
west side of Payette River. There were two work elements that could enhance fire flows to the
west.
1. Complete the west side storage tank called for in the Master Plan Improvements.
This is most feasible if development patterns push growth to the west along the
Highway-55 corridor.
TOOTHMAN-ORTON ENGINEERING COMPANY
Mr. Robert Strope, City Manager
City of Mccall
July 1, 2003
Page 5
2. Complete the 8-inch and 10-inch distribution line loop west along Highway-55
from Shore Lodge to Boydstun and south along Boydstun, east along the
proposed alignment of the Dienhard Bypass to the existing 12-inch water
connection at Rio Vista Subdivision.
CONFORMANCE WITH CURRENT MASTER PLAN:
The current Master Plan, City of McCall Water System Master Plan, 2001 Revision,
continues to place top priority on both the storage and west side looping identified in the 1993
Revision. While the current plan does conform to the 1993 Minimum Project goals, it would be
prudent to review and size those goals, both the storage tank and west loop, to fit the latest
forecast and design criteria designed and established in the 2001 revision.
SUMMARY OF REMAINING MINIMUM PROJECT ELEMENTS:
In order to complete the full minimum project goals and meet two current planning needs, it is
necessary to complete the east side storage tank and west loop distribution improvements. Both
of these project elements have the same project justification today as they did in 1993, namely:
1. Fire protection for the community at large and particularly for the large commercial
buildings and school on the east side of town.
2. Fire protection for the large commercial buildings on the west side of town.
3. Dedicated storage as"insurance"against long term power outages or pump failures.
4. Dedicated storage as a means to achieve more efficient runs of the W.T.P.
5. Good pressure control and supply to approved (and active) development areas on the
east and west sides of town.
If upon review of this correspondence you have additional questions,please call.
Z
AN-ORTON EN EERING COMPANY
U .. Orton, Jr., P.E./L.S.
cc: Mike Holladay, Holladay Engineering Company
RECEIVED
HOLLADAY ENGINEERING CO. JUL 0 2 2003
ENGINEERS • CONSULTANTS
32 N. Main P.O. Box 235 Payette, ID 83661
(208) 642-3304 0 Fax# (208) 642-2159
June 24, 2003
Mr. Robert Strope, City Manager
City of McCall
P. O. Box 986
McCall, ID 83638
RE: CRITICAL NEED FOR WATER RESERVOIR
Dear Mr. Strope:
In the City of McCall Water System Master Plan, 2001 Revision, increased finished water
storage was identified as the number-one priority among the listed needed system improvements.
This prioritization was based on a storage need derived from the criteria of flow equalization, fire
reserve, and"emergency" reserve defined as the reserve needed to offset the risks of equipment
breakdown and power outage caused by normal wear and tear.
The criteria applied in the Master Plan did not include any consideration based on the peril of
terrorism, because such criteria were not at that time a standard part of the process of master plan
preparation, nor of most civilian planning procedures in the United States. The passage of the
Federal Public Health and Bioterrorism Preparedness Act of 2002 ("Security and Preparedness
Act"hereinafter) made capability to resist terrorism and to respond to terrorist acts a designated
concern of local governments. In view of this, it is appropriate to re-examine the conclusions of
the Water Master Plan from the aspect of the potential needs for terrorism vulnerability reduction
and timely response, in addition to the previously established criteria that were applied in the
study done in 2001.
The Security and Preparedness Act requires every community with a population between 3,300
and 49,999 to complete a Vulnerability Assessment by June 30, 2004. The Vulnerability
Assessment is a rule-defined procedure requiring a comprehensive evaluation, drawing on the
insights and input of all emergency response cadres in the community (police, fire, ambulance
and medical in particular in addition to Public Works staff) and examining all the major elements
of the City's infrastructure. This letter does not substitute for such an assessment, but addresses
the particular issue of potable water storage needs including potential terrorism as a criterion in
addition to the previously established criteria of flow equalization, fire and equipment or power
breakdown caused by normal wear and tear.
In a brief review of possibilities of damage from attack disabling the current McCall water
system,the water treatment plant is seen to be critical. It includes both the only facility the City
WATER • WASTEWATER • SOLID WASTE • PUBLIC UTILITIES 0 STRUCTURES 9 PLANNING 0 STUDIES
Mr. Robert Strope, City Manager
City of McCall
June 24,2003
Page 2
has for producing potable water, and the only facility the City has for storing potable water, on
one site under one roof. Ability to pump water from the lake is also critical,but there are two
water pumping stations in separate locations, so that destruction of either one will only impair,
rather than eliminate,the City's ability to supply potable water to its people. An attack
motivated by terrorism,vandalism or retaliation at the water treatment plant could entirely stop
the City from supplying potable water.
In the event of such a shutdown,the existence of a stored volume of water at a location separate
from the treatment plant site would be crucial. With an elevated million-gallon reservoir in place
as recommended in the Master Plan,the system would maintain pressure and would have enough
stored water to supply an average of 40 gallons per capita per day for four to five days. Forty
gallons per capita per day is adequate for culinary, drinking and sanitation needs, excluding such
secondary cleaning uses as laundry and car washing. Four or five days would be adequate time
to make and implement back-up provisions for continued safe potable water supply,whether by
trucking water to the City or by setting up portable pumping and filtration equipment to operate
in lieu of the treatment plant while repairs are being made. Under current circumstances,
however, such a shutdown would constitute an immediate public health emergency. The
distribution system would quickly lose pressure and be subject to contamination by groundwater.
Very soon,probably in less than ten minutes,water would not run from most taps at all.
Sanitation would be at risk. A lengthy decontamination of the pipes would be required before
any emergency or temporary service could be resumed.
In conclusion, consideration of terrorism vulnerability amplifies the conclusion,drawn in the
2001 Water Master Plan,that adding the million-gallon water storage in a separate,.elevated
location is the number-one priority for construction of water system improvements. Whereas the
storage is in fact crucial for ordinary health practices in the immediate aftermath of an attack on
the treatment plant,construction of this recommended storage facility is the critically necessary
City-wide requirement for the City's water system facilities.
Please call if you have additional questions.
Sincerely,
HOLLADAY ENGINEERING COMPANY
By: �i
Kenneth R. Rice, P. E.
C: Richard F. Orton Jr., P.E./L.S.
ML\061103\Protectionby storage