205-CPH-Amendment 44 AMENDMENT NO. 44
FOR
CONSULTING ENGINEERING SERVICES
FOR
SANITARY SEWAGE COLLECTION SYSTEM
INFILTRATION / INFLOW
ASSESSMENT
AND
ENGINEERING SERVICES
BETWEEN
THE CITY OF SANFORD
AND
CONKLIN, PORTER AND HOLMES-ENGINEERS, INC.
This Amendment dated/c~/~.~ ,/, 1995, by and between the City of Sanford (hereinafter called
the CITY), and Conklin, Porter and Holmes-Engineers, Inc., (hereinafter called the ENGINEER),
is mutually agreed upon and declared an authorized Amendment for Consulting Engineering
Services between the parties, herein setting forth the scope, terms and conditions of the work
herein authorized.
WHEREAS, the ENGINEER's personnel have previously provided engineering services to the
CITY through amendments to an agreement previously entered into on the 17th day of December
1983, and WHEREAS, the ENGINEER has previously provided infiltration / inflow (I/I) and
sewer system evaluation surveys (SSES) of the Sanford system and are familiar with the system
and will utilize previous work as practical, and
WHEREAS, the Sanford area has experienced heavy and prolonged rainfall and conditions exist
in the sewage collection system which resulted in extraordinary flows to the Treatment Plant and
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WHEREAS, the CITY has noted relatively higher flows from the eastem portion of the sewage
collection system including the airport and the areas along Mellonville Avenue, and
Whereas, the CITY desires to identify and eliminate the sourues of excessive infiltration / inflow
as it represents lost capacity and increased costs and is critical to the satisfactory operation of the
treatment plant and land disposal system, and
WHEREAS, the CITY needs assistance to undertake the additional investigative studies and
repairs needed beyond those included in their normal operation and maintenance programs, and
WHEREAS, the Consulting ENGINEER and his subcontractors have the personnel and equipment
necessary to accomplish the field work involved for the FI study while it is anticipated that ground
water levels will remain high allowing the investigation, inspections and studies to be the most
effective,
NOW THEREFORE, the CITY and ENGINEERING for the considerations named hereinaf~er
agree as follows:
SECTION 1
1.1 Scope of Work:
The work will begin with a limited scope Infiltration / Inflow Study of the eastem portion
of the City's sewage collection system which contributes flow to the Ft. Mellon Lift
Station. The study area includes Sub-Systems 4, 5, 6, 9 and 10 as defined in the previous
I/I and SSES studies and briefly described as the areas eastward from U.S. 17 & 92
between First Street and Lake Monroe; those areas bordering Mellonville Avenue from
Lake Monroe to 251h Street; and the areas south of 25th Street from Sanford Avenue to
the airport, inclusive. The study will not complete all aspects of an overall program of
repairs, but will be a quick evaluation of the system to determine major problems and to
identify some immediate repairs where deemed advisable. The work shall consist primarily
ofinvestigative work to study, prioritize needed rapairs and initiate and define areas where
further work is needed. It is contemplated that results of the study will identify certain
needed repairs and/or areas requiring more detailed investigations and repair work. The
scope shall also include document preparation for more normal contracting of repair and
sewer replacement work. The actual construction work which is anticipated as being
performed by the CITY or separately contracted for by the CITY, is not included in the
Scope and payment provisions of this Agreement.
Field investigative work is contemplated to be done quickly (within 60 days of
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authorization to proceed) to take advantage of high ground water conditions which are
needed for leak detection in buried joints. It is anticipated that available CITY personnel
and crews will be jointly involved with the ENGINEER in supervising and performing
investigative work. Additionally, the CITY will utilize their own cleaning and televising
equipment and crews as part of the work. The work is to consist of several concurrent
parts as follows:
1.1.1 Gather maps, rainfall data, pump station mn times and pumping rates, reestablish
tributary sub systems and evaluate each sub system of the study area to locate and
determine priorities for investigative field work to follow.
1.1.2 Inflow investigation utilizing the services of one or more CITY approved
subconsultants or subcontractors.
1.1.2.1 Study maps, records, the sewer system previous SSES and
Ill reports and interview CITY employees. Also assist in
planning the field work and schedule and coordinate the
actual performances of the field work.
1.1.2.2 Establish initial priorities for work to follow including
amount and concentration of work in various sub systems.
City personnel will be concurrently reviewing the list of
defects which were identified in the I/I Assessment Study of
1991 and physically verifying the current status of the
previous repairs.
1.1.2.3 Representative physical inspection and smoke testing of the
study area sub systems in order of priority as established
from paragraphs 1.1.1, 1.1.2.1 and 1.1.2.2, above.
Representative physical inspections are to include
observation for surface depressions along sewers or around
manholes; opening manholes to check for inflows through
tops and sides; observation to determine of manholes are too
low or in depressions or are located where surface water can
get into them; observations to t~y and determine if inlets or
other stormwater connections have been made into the
sanitary sewer system. Physical inspection and
representative smoke testing in sub systems in order of
priority will be jointly accomplished.
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that included in this initial recommendation may be needed
at a later date.
1.1.3.6 Categorization and evaluation of the defects found,
including a screening method to determine the need and
approximate effectiveness of fixing different types of
defects. The cost effective screening will be done on an
individual sub system basis and the results accumulated on
an overall basis.
1.1.3.7 Determination of any major emergency infiltration
construction contracting work that needs to be done by the
CITY.
1.1.3.8 Summary report of the investigative work performed,
results, recommendations and rough estimate of the cost to
partially remediate the deficiencies found.
1.1.4 Prepare General Contract Documents for emergency or normal
employment by the CITY of a construction contractor or contractors
to perform designated, representative construction tasks anticipated
as being needed. These contract documents are to include rough
estimates ofthe amount ofeach work item. The contract documents
would be utilized as a unit price basis for employment by the CITY
and determining payment for the construction work needed as
determined by the investigative work. The general construction
contracting would include point repairs to lines, manhole work and
limited line replacements, intemal grouting, and/or sliplining.
SECTION II
2.1 Method of Payment
This work has an indefinite scope which is not possible to determine in advance with any
degree of accuracy. Also, the timing and available time to accomplish the work is
unknown and highly dependent on weather, groundwater levels and the physical condition
and flows that are found in the sewer system at the time of the work. Cost for construction
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contract work are not included in this Amendment and are anticipated as being directly
contracted by the CITY.
Payment for work done under this Amendment is to be made on a monthly basis upon
approval of a satisfactory invoice based on payroll cost times a multiplier of 1.95, plus
direct reimbursement for out-of-pocket and outside consultant (subcontractors) expense.
Subcontractors expense will be increased by 5%. To cover administration and other cost.
The initial, maximum authorized fee at time of execution of this Agreement is
$123,350.00. This maximum amount authorized is based on the estimate shown in
Paragraph 2.2 and may be subject to increase or decrease by written Amendment as the
work progresses:
2.2 Estimate of Costs:
2.2.1 Subconsultant (subcontractor) Costs:
2.2.1.1 Physical inspection/inflow evaluation/smoke testing
including equipment of representative reaches of sub
systems..
42,800 If at $0.25/1f = $10,700.00
2.2.1.2 Night time flow isolation/weiring work ( including
equipment).
49,500 If at $0.25/1f = $12,375.00
2.2.1.3 Normal line cleaning and TVing
6,500 If at $1.50/lf = $ 9,750.00
2.2.1.4 Medium line cleaning and TVing
4,500 lfat $2.00/1f = $ 9,000.00
2.2.1.5 Heavy line cleaning and TVing
2,000 lfat $2.50/fl = $ 5,000.00
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2.2.1.6 By-pass pumping - 15 days
At $800.00/day = $12,000.00
2.2.1.7 Office summary, analysis, evaluation of
work & report writing of completed field
work (TV inspection).
13,000 lfat $0.22/1f = $ 2,860.00
Subtotal Item 2.2.1
(including 5% Increase) = $ 64,770.00
Sub-consultants (subcontractors)
2.2.2 ENGINEER's Labor and Other Costs:
2.2.2.1 $28,978.46 payroll cost x 1.95 = $ 56,509.95
2.2.2.2 Out-of-pocket expense for travel
prints, xerox, postage, federal express,
Maps, aerials, report printing, etc. = $ 2,065.00
Subtotal item 2.2.2
Engineer's labor and other cost = $ 58,574.95
Total amount authorized under
this amendment at this time $123,344.95
Subcontractors' and Engineers'
(Item 2.2.1. and 2.2.2) Say $123,350.00
Section IH
3.1 Additional Services of the Engineer:
3.1.1 Additional services due to significant changes in general scope of the Project or
its design.
3.1.2 Revising previously approved studies, reports, design documents, drawings or
specifications.
3.1.3 Preparing documents for alternate bids required by the CITY for work which is not
executed or not contemplated in the Scope of Work described herein.
3.1.4 Additional devices in connection with the project including services to be furnished
by the CITY and services not otherwise provided for in this Agreement.
Section IV
4.1 Personnel and Facilities:
The ENGINEER represents that he has, or will secure at his own expense, all personnel
and equipment required to do the work with his own forces or will subcontract portions of
the work to CITY approved subcontractors. All personnel engaged in the work shall be
fully qualified and properly equipped.
Section V
5.1 General Conditions:
5.1.1 Opinions of Probable Construction Cost:
Since the ENGINEER has no control over the cost of labor, materials or equipment
or over the CONTRACTOR's methods of determining prices or over competitive
bidding or market conditions, his opinions of probable construction cost provided
for herein are to be made on the basis of his experience and qualifications and
represent his best judgement as a design professional familiar with the construction
industry, but the ENGINEER cannot and does not guarantee that bids or the Project
construction cost will not vary from the Opinion of Probable Cost prepared by him.
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5.1.2 Successors and Assigns:
The CITY and the Engineer each binds himself and his parmers, successors,
executors, administrators and assigns to the other part of this Agreement and to the
partners, successors, executers, administrators and assigns of such other party, in
respect to all covenants of this agreement; except as above, neither the CITY nor
the ENGINEER shall assign, sublet or transfer his interest in this Agreement
without the written consent of the other. Nothing herein shall be construed as
creating any personal liability on the part of any officer or agent of any public body
which may be a party hereto, nor shall it be construed as giving any rights or
benefits hereunder to anyone other than the CITY and the ENGINEER.
5.1.3 Insurance:
The ENGINEER shall secure and maintain such insurance as will protect him from
claims under the Workmen' s Compensation Acts and from claims for bodily injury,
death or property damage which may arise from the performance of his services
under this Agreement. The ENGINEER also agrees to carry Professional Liability
Insurance in an amount mutually acceptable in writing to both parties, but not more
than $1,000,000 and to provide a certificate regarding the same to the CITY. The
ENGINEER will require his technical subconsultants (subcontractors) to be
appropriately insured.
Section VI
6.1 CITY's Responsibilities:
6.1.1 Provide access to and to make all provisions for the ENGINEER to enter upon
public and private lands as required for the ENGINEER to perform his work under
this Agreement.
6.1.2 Provide lands, rights-of-way and easements needed.
6.1.3 Provide such legal, accounting and insurance counseling services as may be
required for the Project.
6.1.4 Designated in writing a person to act as CITY' s representative with respect to the
work to be performed under this Agreement; and such person shall have complete
authority to transmit instructions, receive information, interpret and define CITY's
policies and decisions with respect to materials, equipment elements and systems
pertinent to the work covered by this Agreement.
6.1.5 Provide CITY crews and equipment and personnel to assist in the administration,
supervision and performing of the work including cleaning and TVing and
emergency point repair construction work and pay all salaries, benefits and costs
related thereto.
6.1.6 Give prompt written notice to the ENGINEER whenever the CITY observes or
otherwise becomes aware of any defect in the Project.
6.1.7 Obtain approval ofall govemmental authorities havingjurisdiction over the project
and such approvals and consents from such other individuals or bodies as may be
necessary for completion of the Project.
6.1.8 Examine all studies, reports sketches, addenda, change orders, estimates,
specifications, drawings, proposals and other documents presented by the
ENGINEER and shall render decisions pertaining thereto within a reasonable time
so as not to delay the work of the ENGINEER.
6.1.9 Fumish or direct the ENGINEER in writing to provide, at the CITY's expense,
necessary additional services as stipulated in Section III of this Agreement, or other
services as required.
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Section VII
IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as
of the day and year hereinabove set forth.
CITY:
ATTES~T
AND
SEAL By authority of the City Commission of the City of
Sanford, Florida granted for the CITY on the date
ENGINEER:
CONKLIN, PORTER AND HOLMES
ATTEST
AND
SEAL
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Plan of Study
Sanitary Sewer Collection System
Infiltration/Inflow Assessment
of Easterly Tributaries to Fort Mellon L.S.
·: ·. · Da a~ ' e : :~ e · · · 8es .
· ' Infilt~atiOn/hifiowV~0rk..'~ ""' .... ~..:..~ .. ~'..: .'.. ~;"~.~ ...' ..
· ..:... ..:...:.......:... .... ... .~:..:.~ .'.
1. Review previous reports~ files 4 16 24 4 50.00
and field data collected in 1991
2. Re-establish sub system No. 4 2 4 10 16 4 50.00
5,6~9 &l,0 and update as
needed.
3. Obtain and compile rainfall data 2 4 6 4 50.00
and pump data for 7 lift stations
in the study area.
4. Interview staff. 4 4 8 50.00
5. Correlate and evaluate raw data 4 8 16
from City.
6. Compare lift station wet 2 8 16
weather data to dry weather
data. Plot rainfall data vs.
operation times for lift stations
in study.
7. Estimate flows to the airport lift 2 4 4
stations and evaluate wetwell
and pump sizing.
8. Perform pump-down tests at the 2 4 8 50.00
airport L.S. to determine current
output.
SUB-TOTAL(CPH) 22 52 92 16 12 $250.00
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iNFLOW; ~NALYSIS.'. 2:" '. · : ; ] ' ':" "
9. Establish priorities for field 8 16 24 2
work.
10 Supervision and coordination of
physical inspection and smoke
testing. (15 days at 3,00O
If/day)CPH C/s) s 15 45
CITY (%) 5 15 80
11 Receive, summarize and 8 24 40
evaluate field data.
12 Recommend immediate repair 2 8 12 2 $50.00
work that could be performed
by CITY forces.
13 Summary report of findings 8 24 30 12 12 $500.00
from inflow analysis.
SUB-TOTAL
CPH 31 87 151 12 16 $550.00
CITY
5 15 80
14 Establish areas most likely to be 8 16 24
problems from previous and
general work and establish
priorities and help plan field
work.
15 Review rainfall data and flow 2 4 6 2
data for lagged response.
16 Supervise and coordinate night $200.00
time flow isolation work. (11
nights at 10 weirings/night)
CPH C/a) 4 8 30 2
CITY (%) 4 8 60
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17 Assist in quantifying results and 8 16 24 8
comparing with normal flow.
18 Determination of immediate 4 8 16 8 $150.00
work to be performed by CITY
and subcontractors (cleaning
and TVing selected reaches)
based on findings from flow
isolation work.
19 Supervise and coordinate
subcontractor's cleaning and
TVing for 20 days
CPH (Va) 3 10 50 4 $250.00
CITY 3 0 O0
20 Categorizing and evaluating 12 24 40
results and cost effective
analysis.
21 Summary report. 4 16 24 8 12 $750.00
SUB-TOTAL
CPH 45 102 214 8 36 $1,100.00
CITY
7 18 160
5": 'CONTRACCI.'DOCU~NidS:PREP~R~TIONi ::"..:. !. "5;" ;i i.f"" .::' ' 5:" '
22 General Contract Documents 8 30 40 24 $200.00
for repairs; estimate quantities
for bidding; assist in gett'~ng
contracted and available for
constmction.
SUB-TOTAL 8 30 40 24 $200.00
OVERALL TOTAL
CPH 106 171 497 36 88 $2,065.00
CITY
12 33 240
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17 Assist in quantifying results and 8 16 24 8
comparing with normal flow.
18 Determination of immediate 4 8 16 8 $150.00
work to be performed by CITY
and subcontractors (cleaning
and TVing selected reaches)
based on findings from flow
isolation work.
19 Supervise and coordinate
subcontractor's cleaning and
TVing for 20 days
CPH (~/a) 3 10 50 4 $250.00
CITY (%) 3 10 100
20 Categorizing and evaluating 12 24 40
results and cost effective
analysis.
21 Summary report. 4 16 24 8 12 $750.00
SUB-TOTAL
CPH 45 102 214 8 36 $1,100.00
CITY
7 18 160
:~ON/RACT:DOCUMEN~SPREPARATION:""'." .:'i':.' :'5'5 ' ' .:.: 5':: ':' ::
22 General Contract Documents 8 30 40 24 $200.00
for repairs; estimate quantities
for bidding; assist in getting
contracted and available for
construction.
SUB-TOTAL 8 30 40 24 $200.00
OVERALL TOTAL
CPH 106 171 497 36 88 $2,065.00
CITY
12 33 240
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