HomeMy WebLinkAboutAgreement_General_05/13/2010 (2) VILLAGE OF TEQUESTA
WATER SYSTEM AND GENERAL UTILITY /CIVIL PROJECTS
WORK AUTHORIZATION
Water Utility Equipment Condition Assessment
This Work Authorization authorizes ARCADIS G &M, Inc. to perform the work set forth herein
and is issued pursuant to the "Professional Engineering Consulting Services Agreement for Water
System and General Utility /Civil Projects ", dated November 17, 2005. All terms and conditions
of said agreement shall be applicable to this Work Authorization.
BACKGROUND
The Village of Tequesta Water Treatment Plant (WTP) and water distribution system has been
built in several stages over a long time period. The water supply and treatment facilities range in
age from 5 to over 30 years old and portions of the distribution system are over 50 years old. As
systems of this type age it becomes increasingly important to develop and implement an effective
and timely replacement program. Failure to do so will ultimately yield a fundamental failure to
perform with obvious service and economic impacts.
The purpose of this project is to identify the condition and probable useful remaining life of the
processes, pumps, motors, piping, valves, instruments and electrical gear at the plant and identify
the condition of the distribution system. This is noted to be different than the development of a
suitable maintenance program. Upon determination of condition, the probable replacement time
will be estimated. Public Service Commission estimated useful life for different types of
facilities will be one of the data sources used in the determination of useful remaining life. The
useful remaining life will be categorized in intervals as follows (0 -5 yrs, 5 -10 yrs, 10 -15 yrs, 15-
20 yrs, greater than 20 yrs). Replacement costs in 2010 dollars will be estimated for each item
and totaled for each interval.
SCOPE
Water Treatment Plant and Remote Storage
1. Review the maintenance and calibration records of equipment to be evaluated, as
supplied by the Village.
2. Review the inventory sheets in detail with staff in order to identify the approximate age
of equipment to be evaluated.
3. Working with staff and using the equipment inventory as a base, identify motor operated
equipment to be evaluated.
4. Secure dead head operating conditions of all pumps and full load amperage ratings of all
motors from plant records to the extent possible.
5. Meet with staff to finalize a list of equipment identified in Items 1 — 4 above.
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6. Based on the equipment list identified in items 1 — 5 above, perform a visual inspection
of each piece of equipment and note any leakage, excessive vibration, etc. Secure a
digital photograph of each piece of equipment.
7. Operate all pumps to determine actual dead head condition.
8. During normal operation of motors determine actual amperage draw.
9. Inspect all MCC's and identify all electrical equipment that are currently obsolete or for
which parts availability is difficult.
10. Secure a digital photograph of all major process equipment and make observations
relative to condition and effectiveness.
11. Review condition of all tankage. This will be done based on external review. Internal
inspection will occur to the extent possible and on a limited basis while maintaining
operations.
12. Review the condition of the Manganese Greensand Filters. This will be accomplished by
performing internal inspection of one original filter and one filter installed as part of filter
plant expansion. The external condition of all filters will be reviewed and evaluated.
13. Review the condition of the hydropneumatic tank. This will be accomplished by
performing internal and external inspection. Observe and comment on system
requirement for hydropneumatic tank and make a recommendation to keep or abandon
the hydropneumatic tank.
14. Observe and comment on the suitability of system redundancy.
15. Observe and comment on the condition of coating systems (especially in areas of high
corrosive attack).
16. Observe and comment on the condition and general functionality of instrumentation
primary elements.
17. To the extent possible operate primary system valves and comment on identifiable
limitations in proper sealing or general physical condition.
18. Observe and comment on the general physical condition of all buildings and structures.
19. Based on observed and monitored condition, categorize valves, processes, motors,
pumps, process equipment, electrical gear and buildings /structures according to probable
useful remaining life. Groupings will be in five year increments (0 -5, 5 -10, 10 -15, 15 -20,
greater than 20).
20. Estimate the replacement or rehabilitation cost of each item or system identified in 2010
dollars.
Water Distribution System (Distribution Piping, Valving and Hydrants)
21. Review the maintenance records of distribution system to be evaluated, as supplied by the
Village.
22. Coordinate with staff and using available records, estimate the age of different areas of
the distribution system.
23. Using the results from Item 22, create a system map based on facility age.
24. Using the results from Item 23 identify system zones based on age and develop and
implement a program to evaluate the distribution system condition based on zone age and
pipe material. The program to evaluate the remaining useful life will also include
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determination of roughness factors for piping (based on 10% sampling from each zone)
and visual condition of valves (based on 10% sampling from each zone), condition of
hydrants (based on 10% sampling).
25. Based on the results from Item 24 identify specific areas for replacement or rehabilitation
and develop a schedule for implementation.
26. Estimate the replacement or rehabilitation cost in 2010 dollars.
27. Summarize the findings in a report and forward 5 copies.
Assumptions
1. The Owner will provide background information and any available records pertaining to
equipment including pump curves and blower curves.
2. The Owner will make available accurate as-built information relevant to the Consultant in
preparation of his work product and as requested.
3. The Owner will be available to assist in gathering field information relative to the
distribution system. This assistance will include flowing mains to aid in determining C-
Factors, exercising select valves and hydrants and providing record information and
personal experience to aid in determining approximate ages of portions of the distribution
system.
4. The Owner will be available to provide access to select facilities such as the interior of
the Manganese Greensand Filters and hydropneumatic tank.
5. Knowledgeable Owner staff will be available during the entire term of the project to
assist the Consultant with access to, and operation of, facilities. The Consultant will
provide suitable equipment for measurement of amperage, etc., but will not supply or
install pressure gauges or other devices where needed to evaluate equipment condition.
The Owner will supply and install such devices.
6. Equipment conditions will be determined for all main process equipment considered
imperative to the treatment process and whose cost of replacement is adequate to
consider as a capital improvement project. In general, motor driven equipment requiring
5 HP motors or greater will be included. Routine maintenance costs will not be included
in the development of a capital plan.
7. It is not anticipated that excavation to expose facilities will occur as part of the
evaluation. The Consultant will perform the evaluation based on review of available
information, physical appearance, available water quality test and readily available
performance tests (flow, pressure, etc.). In the event excavation is required for any part
of the project, excavation will be performed by the Owner.
8. This effort will exclude capital items included by system growth. The intent of this work
is to develop a plan for removal and replacement of existing equipment and facilities. The
Owner and Engineer acknowledge that the nature of this study dictates the development
of a generalized capital plan that will be subject to periodic update. Projections on
specific capital events may ultimately require alteration due to specific circumstance.
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COMPENSATION
For Scope Items 1 thru 27, the Engineer shall be paid a lump sum fee of twenty nine thousand,
five hundred dollars ($29,500).
TIME OF PERFORMANCE
The Engineer will complete Scope Items 1 thru 27 within 120 days of receipt of an executed
authorization, exclusive of delays beyond the control of the Engineer.
This authorization can be cancelled with or without cause by the Village with 30 days written
notice. Should said cancellation occur, the Engineer will be paid for all services performed
through the cancellation date.
ACCEPTED BY:
Village of Tequesta
(Utility Equipment Condition Assessment)
Michael R. Couzzo, Village Manager
Date: i f n
ARCADIS G &M, Inc.
(UtilityEquipmentCondition Assessment)
William D. Reese, P.E., Vice President
Date: 40 C I l6
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