R01-300RESOLUTION NO. R01- 3~
A RESOLUTION OF TIlE CITY COMMISSION OF THE
CITY OF BOYNTON BEACH, FLORIDA, AUTHORIZING
THE MAYOR AND CITY CLERK TO EXECUTE A TASK
ORDER (#01-02) FOR GENERAL ENGINEERING
CONSULTANT, HARTMAN AND ASSOCIATES, INC.,
AN AMOUNT NOT TO EXCEED $57,050 TO PERFORM A
HYDRAULIC ANALYSIS OF THE WATER
DISTRIBUTION SYSTEM; AND PROVIDING AN
EFFECTiVE DATE.
WItEREAS, the City Commission, upon staff's recommendation, has deemed it
ppropriate, a!~.d in the best interests of the public, to approve Task Order No. 01-02 for
3eneral Engineering Consultant, Hartman and Associates, Inc., te perform a hydraulic
malysis of the w, ater distribution system;
NOW;.T~REI~ORE, BE IT RESOLVED BY THE CITY COMMISSION OF
rI-IE CITY OF BOYNTON BEACH, FLORIDA, THAT:
Section 1. The City Commission of the City of Boynton Beach, Florida does
hereby authorize and direct the Mayor and City Clerk to approve and execute Task Order
~#01-02) for General Engineermg Consultant, Hartman and Associates, Inc., in an mount not
Io exceed $57,050, to perform a hydraulic analysis of the water distribution system.
Section 2. This Resolution shall become effective immediately upon passage.
PASSED AND ADOPTED this 40 day of November, 2001.
CITY O BO T N EACH, FLORIDA
M yo '
Vice Mayor ~'-~--
Commissioner
CITY OF BOYNTON BEACH
TASK ORDER NO. 2
Water Distribution System Analysis
Hydraulic Model Upgrade
October 3, 2001
L BACKGROUND
As part of the development of the City of Boymon Beach's Comprehension Plan in the late
1980's, the City had a hydraulic analysis of the City's water distribution system conducted. The
analysis ,of the system, was documented in the January 1989 report rifled, "City of Boynton
Beach, Florida, Comprehensive Plan, Sanitary Sewer Drainage, Potable Water, Natural
Groundwater Aquifer Recharge and Solid Waste Element." Since the completion of the January
1989 report, the City has made major improvements to the avater treatment, storage, supply and
distribution systems. These improvements include:
The construction of the Western Reverse Osmosis (RO)Water Treatment Plant (WTP)
· Miscellaneous upgrades of the Water Transmission/Distfiburion System as identified in the
Janumy 1989 Report
· Construction of the concrete elevation storage tank at the East WTP
· Installation of the aquifer storage and recovery (ASR) well at the East WTP.
· New,transmission mains relat~t to the expansion and growth of the City's service area.
In addition to the above system improvements, the operation of the system has been modified to
not only shift the primary supply source for the system to the Western WTP, but also respond to
the South Florida Water Management District (SFWMD) policies related to the severe drought in
the region. Based Upon the SFWMD policies, the Boynton Beach Utilities Department has been
operating the system at a reduced delivery pressure of 45 psi. This delivery pressure has
dramatically reduced the usable storage in the concrete elevated storage tank. The limitation on
delivery pressure causes a reduction in the stored supply in the City's elevated storage tank.
The Utilities Depamnent is seeking assistance from one of the existing general engineering
consultants to upgrade the existing model to reflect the changes in the system related to the
storage tank locations and capacity, intermediate pump stations and storage tanks, additions to
the transmission main system, and the Western R20 WTP. The Department is also requesting
that the.disaggregarion of the peak demands be analyzed to verify that the demand projections in
the January 1989 model reflect the current peak demands on the system. The flow
disaggregarion will also be evaluated to adjust the~ demands of critical nodes in the model based
upon changes~ in the land use plan for the City. It is understood that characteristics of the
downtown areas of the City could potentially be significantly modified to increase water
demands if a change in allowable building height is approved.
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II. SCOPE OF SERVICES
A, General:
Hartman & Associates, Inc. (HAI) has developed a specific Scope of Services to update and
revise the model developed for the 1989 Comprehensive Plato Based upon the detailed
discussion with the Utilities Department staff, the goal is to provide the City with an updated
model that can be used to determine system improvements to address the following operational
and service requirements:
1. Delivery of water service primarily from the Western RO WTP with the East WTP being
used for meeting peak demand conditionsL
2. Reduction in the delivery pressure at the water treatment plants to 45 psi.
3. Changes in the land use zoning and developed densities especially related to the Quantum
Park Development and the potential increase in the current building height requirement.
4. The use of interconnects with adjacent utilities to meet emergency and/or fire flow
requirements.
Below is the Scope of Services for the update of the 1989 water transmission/distribution system
analysis.
B. Task 1: Meeting with the Cit~
HAl will schedule and prepare for an initial meeting with the Utilities Department to review the
objectives of the model upgrade. Prior to the meeting, HA1 will receive a working model of the
1989 model to review and determine the critical issues regarding the model that will need to be
discussed prior to the kick-offmeeting.
Based on HAI's understanding of the City's objectives for the revised model, HAI will present at
the kick-off meeting, the skeleton system that will be utilized for evaluation of the existing
system as well as improvements to the existing system. The skeleton system will be primarily
limited to pipe sizes of 8-inches and larger but will also include selected 6-inch mains that are
looped or intarcounected to larger mains. It is HAl's understanding that the City wants to focus
on the large mains that make up the core water transmission delivery system. Insignificant or
substandard piping that can be obviously identified from a review of the existing AutoCADD
files will be removed from the model for purposes of this analysis.
Following the meeting, HAI will summarize the discussions at the meeting and distribute a copy
of the memorandum to all interested parties.
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C. Task 2: Model Conversion
Based upon the best available information, HA1 has assumed that the 1989 model was developed
using the KYPIPE model. HAI proposes to utilize WaterCADD, Version 4.0 for the water
system analysis in this proposal. It is anticipated that there will be limited data that will transfer
to WaterCADD if the existing model utilizes the KYPIPE product. In discussions with the City's
AutoCADD group, the existing distribution/transmission system is available in digital format.
However, the distribution and transmission system is stored on one layer in AutoCADD.
Assuming this is correct, HA1 will develop a detailed skeleton model of major
transmission/distribution mains from the existing AutoCADD fries. Since the existing pipes are
on one layer in the Utitity's AutoCADD files, I-IAI will develop a comprehensive layout of the
existing system placing individual water main sizes on a separate AutoCADD layer. By
able to digitally transfer the pipe locations and
sizes to r with a.more flexible database of the
existing transmission/distribution s ff the system could be imported into a
future ~ s Pal>lie Utilities and Works Systems,
as well as being milized for other planning and mapping purposes.
D. Task 3: Disag~regation of Water Demands
Utilizing available GIS maps, HAl will compare land use and zoning requirements for the City in
1989 to the current requirements. Based upon this GIS map analysis, HA1 will identify areas
where the density of development has materially changed. In addition to the land use analysis,
HA/will compare the TAZ zone population projections, which were used in the 1989 report with
the projections from the 2000 census projections. In addition, HA1 will compare the per unit
usage such as per capita for single family residential customers, per student/seat for institutional
usage and per acm/sq, ft. for commercial/industrial flows in the 1989 model with the past five (5)
years of historical patterns observed by the City. Based upon the changes in the documented
flows and assumptions in the 19119 model, HA1 will make appropriate adjustments in the
demands to be utilized in the model for purposes of this analysis.
E. Task 4: Model Calibration
Based upon discussions with the City, it is not anticipated that field calibration of the model will
be required. However, HA1 will collect five (5) years of operational data from the City on plant
pumpage, water levels in the storage tanks and City monitored system pressures to determine
whether the model is properly calibrated prior to any analysis being performed by HAl. Due to
the wide range of system operation conditions which have occurred over this five (5) year period,
there should be sufficient data to det~,,,ine whether the existing model is properly calibrated.
HA/will also utilize the recently completed Insurance Services Office (ISO) fire flow data to
determine whether the model is properly calibrated, determine whether system valves are in the
proper operating position and estimate pipe friction factors. In conjunction with the ISO data,
HAI will review the friction coefficients utilized in the 1989 model and will use best engineering
judgement in establishing friction coefficients for both existing and new mains based upon pipe
material, age of the pipe and any projected change in the pipe condition over the evaluation
period used in the analysis.
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It is assumed that HAl will evaluate system improvements based upon the following future
conditions:
1) near term demands (1-5 years);
2) projected demands in 2007, 2012 and 2017;
3) projected demands at the end ofthe twenty (20) year planning horizon (2022); and
4) projected demands under buildout conditions.
F. Task 5: Interim Review Meeting
Upon completion of Tasks 1 through 4, I-IAI will prepare a technical memorandum outlining the
analysis and conversion of the model to WaterCADD. The technical memorandum will also
summarize the changes in demands that have been made to the original model and the results of
the initial calibration analysis for the WaterCADD model: Once the City has reviewed the
techni~ memorandum, HA1 will schedule a time to meet with the City to review the findings of
the initial analysis.
At the meeting, HAI will establish with the City the specific demand conditions that the City will
want analyze& These demand scenarios will include: 1) variations in the supply source between
the East and Western WTPs; 2) fire flow demands at critical points in the system, 3) demands for
new .growth areas, 4) evaluation of the capacity of existing and future interconnects with
adjoining utilities, 5) varying WTP delivery pressures, 6) drought vs. normal usage conditions
with an evaluation of system operational strategies to meet the severe drought conditions,
7) additional storage and/or repump stations to meet critical conditions, 8) an evaluation of the
reduction in water demands if the City implements a reuse distribution system to offset existing
and future irrigation demands, and 9) a sensitivity analysis on the impact of high rise
development in identified areas of the City.
G. Task 6: Field Calibration
Based upon the findings in Tasks 1 through 5, HAl will assess the need to perform a field
calibration analysis of the revised hydraulic model. If required, and only after specific
authorization by the City to initiate Task 6, HAl will develop a detailed program to perform
instantaneous and/or extended period evaluations of pressures in the existing system. For
purposes of this Task Order, I-IAI has established a maximum level of effort of 80 man-hours.
HA1 will commit to calibrate the model using field measurements within this budget allowance if
it is determined that field calibration of the model is required.
For the instantaneous analysis, flows from selected fire hydrants will be measured along with the
existing system pressures in the vicinity of each test hydrant. The status of major inputs to the
water system from the two water plants, rep~rmp stations and the elevated storage tanks will also
be monitored. In addition to fire hydrant flow tests, HAl will evaluate the need to install twenty-
four (24) hour pressure recorders at selected points in the system to monitor changes in the
distribution/transmission system pressures over an extended period. HA1 will utilize the seven
(7) continuous recorders that the firm has in inventory to evaluate changes in system pressures
over extended periods.
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If the field calibration is performed, HAI will make adjustments in one or more of the following
factors to adjust the model to reflect the field observed conditions:
1) friction coefficient for selected pipe segments;
2) operating position ofl'me valves;
3) peakhourly to average dally flow demand ratios and/or;
4) allocation of demands to critical model node points.
H. Task 7: Detailed Analysis
Once the City. and HAI have determined that the revised model is accurately reflecting the
existing system under critical operational conditions, HA1 will analyze selected flow scenarios to
meet future growth and ~stem requirements. The selection of scenarios to the modeled will be
based upon discussions with the City after HAl has presented recommended model scenarios to
the City as discussed in Tasks 4 and 5. The model scenarios will be based upon steady state
conditions using selected water treatment plant and system operating conditions. These
conditions would include level in the elevated storage tank and pump capacities at selected
delive~ pressures, dinmal demand patterns and fire flow demands for selected alternatives. The
modeled scenarios will ~ based .up0fi the growth projections for eack five (5) year ineremem
over a tWenty (2fi) year planni~hofizon. Buildout conditions will also be evaluated. The five
(5) year.increments have been selected to eval.ua..~ phased improvements to the water system and
to meet the requirements under build-out conditions.
I. Task 8: Letter Report of Find'mgs
HAl will summarize the findings of the hydraulic modeled analysis in a letter report. The letter
report will present the improvements to the existing system to meet the future growth and land
use plans for the City. Planninglevel construction estimates will be prepared for the system
improvements. These cost estima~ will consider constmctability issues related to the pipel'me
corridors as well as major roadway and canal cross'mgs. The letter report will include
consolidated maps, which depict the existing system and the phased recommended
improvements including System improvements required to meet build-out conditions. The
capital cost requirements will be summarized for each five (5) year period and the bulldout
condition.
Upon receipt of the City's review of the draft letter report, I-IAI will meet with the City to discuss
the draft letter report and address specific comments by the City. After the meeting, HAI will
finalize the letter report and submit a final report. I-IAI will provide with the final report a
documented digital file of the model and hard copy maps, which depict the recommended
improvements to the system to meet the future conditions.
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III. PROJECT SCHEDULE
The project schedule for each task is presented below:
Task
Completion Date
Days from Notice m
Proceed
1 14
2 45
3 60
4 75
5 90
6 9O
7 120
8 150
ITEMS TO BE FURNISHED BY OWNER
The projected level of effort and schedule for the hydraulic analysis has been based upon
the City providing the following information within two weeks of the notice m proceed
for the project:
· Electronic copy of the 1989 hydraulic model input files and a hard copy map of the
modeled systems.
· Documentation, for the input files including friction factors, model demands, 1989
base flow projections, model calibration and future demand projections.
· Historical system operational data including water plant flow records, tank levels,
booster pump station flow/pressure readings, fire flow test results and pressure
readings from remote locations in the system.
· Electronic files of the City's 1989 and current land use zoning maps.
· AutoCADD files for the existing water transmission/distribution system.
COMPENSATION
Payment for the professional services is to be reimbursed on an hourly basis up to the
not-to-exceed amount indicated below. For Task 1 through 8. I4__41 will bill the City for
actual hourly labor charges based upon the attached rate schedule. Individual task
budgets have been provided to indicate the estimated level of effort required for each
task. However, actual costs for a task may exceed the estimated amount provided the
overall project costs do not exceed the upset limit for the project. The upset limit amount
will not include Task 6 unless Task 6 is specifically authorized by the City.
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The fee for the individual tasks, reimbursable expenses and the overall project is
presented below:
PROJECT COST SUMMARY
Estimated
Task No. Labor Cost
1 $6,000
2 $10,500
3 $6,000
4 $5,500
5 $8,00O
6 $5,000
7 $6,000
8 $8,500
Subtotal $55,500.00
Reimbursable Expenses:
Travel $750
Copies $250
Graphics/maps $550
Subtotal Reimbursable
Expenses $1,550.00
Total Not to Exceed Fees $57,050.00
APPROVED BY:
CITY OF BOYNTON BEACH, FLORIDA
Approved as to Form: City Attol, t[dy 7 '
Dat~
SUBMITTED BY:
HARTMAN & ASSOGL
BY: M~rl~ ii'. l~nning,
Vice President
Date
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