HomeMy Public PortalAboutORD11436 BILL NO. 90-40
SPONSORED BY COUNCILMAN HALSEY
ORDINANCE NO. llq3g
AN ORDINANCE OF THE CITY OF JEFFERSON, MISSOURI, AUTHORIZING THE
MAYOR AND CITY CLERK TO EXECUTE AN AMENDMENT TO THE AGREEMENT WITH
MILLER & ASSOCIATES DATED MARCH 8, 1988, TO INCLUDE THE DESIGN OF
STORMWATER IMPROVEMENTS IN HOUGH PARX/ISOM AREA.
BE IT ENACTED BY THE COUNCIL OF THE CITY OF JEFFERSON, MISSOURI,
AS FOLLOWS:
Section 1. The Mayor and City Clerk are hereby authorized and
directed to execute an amendment to the agreement with Miller &
Associates, dated March 8, 1988, to include the design of
stormwater improvements in Hough Park/Isom. The amount of the
contract shall not exceed $10, 900. 00.
Section 2. The agreement shall be substantially the same in
form and content as that agreement attached hereto as Exhibit A.
Section 3 . This ordinance shall be in full force and effect
from and after the date of its passage and approval.
Passed /qr a Approved 170 10 20
esi fficer '--Mayor—6—/*
ATTEST:
City Clerk
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AMENDMENT TO CONTRACT FOR ENGINEERING SERVICES
THIS AGREEMENT, made and entered into this ]�_ day of
1990, by and between the City of Jefferson, a municipal cor ora ion - '
of the State of Missouri, hereinafter referred to as the "City"
with offices at 320 E. McCarty, Jefferson City, Missouri 65101, and
Miller Associates, Building 5, Suite 100, 409 Vandiver Drive, ti' _'
Columbia Missouri 65202 hereinafter referred to as the
�
"Engineer" .
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WITNESSETH: �t
THAT, WHEREAS, City did enter into an agreement with Engineer as a %;�::
authorized by Ordinance 10996 of the City Council of the City of �` '
Jefferson, adopted March 8 , 1988 , for certain technical and ;<° '
professional services in connection with a storm water management
study and design in the Cimarron/Knight Valley area of Jefferson
t.,i SiA S{ti
City; and
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WHEREAS, the City is desirous of amending this agreement to include
certain technical and professional services hereinafter described
in connection with a storm water management stud and design in the
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Hough Park/Isom Drainage Area.
WHEREAS, the Engineer made certain representations and statements
to the City with respect to the provision of such services and the
City has accepted said proposal and is authorized by ordinances:'.
11436 of the City Council of the City of Jefferson, adopted July
16 1990 to enter into the amendment with the Engineer for the
x performances of services by the Engineer. ?sr
NOW, THEREFORE, for the considerations herein expressed, it is
agreed by and between the City and the Engineer as follows:
1. Scope of Services. Paragraph 1, Scope of Services, of the �¢A
contract dated March 8, 1988 , is amended to include the performance
of engineering and administrative services described in the
attached Exhibit A. r
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•1: oM1i,
2 . Compensation. Paragraph 6, Compensation, of the contract
dated March 8, 1988, is amended to read as follows:
The City will pay the Engineer in accordance with the rate set
forth below, which shall constitute full and complete
compensation for the Engineer services hereunder. Such
compensation will be paid in progress payments, as established Y
by the City. The final payment will be subject to receipt of
a requisition for payment and a statement of services rendered
from the Engineer that the Engineer fully performed with work
to be paid for in such progress payments in conformance with qtr
f. .:::, • the contract. It is expressly understood that in no event
will the total compensation and reimbursement to be paid to
the Engineer under the terms of this contract exceed the sum
of thirty-three thousand nine hundred dollars ($33,900. 00) for
-
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all services required unless specifically a nd mutually agreed
to in writing by both the city and Enginee r. No change shall
be made unless there is a substantial and significant
difference between the work originally contemplated by this
agreement and the work actually required
3. Notice to Proceed. For the portion of the services included
in this amendment, the Engineer shall commence as directed in -the
Notice to Proceed and the services shall be undertaken and
completed in such sequence as to assure their expeditious
completion in the light of the purposes of the amendment, but in
hereunder shall be
services required
any event, all of the execution of this
completed within sixty (60) days from the date of
amendment.
4. All other conditions of the original agreement shall remain
unchanged.
1990.
Executed this -3 1-4& day of
CITY OF JEFFERSON, MISSOURI
MA
ATTEST:
City Clerk
ENGINEER
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ATTEST:
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Associates Miller
Engineers, PlannersOurveyors, Inc.
409 Vandiver Drive
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Building 5, Suite 100
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Columbia, :• 65201
Phone:
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During the week of June 4 1990
�! , , engineers from Miller Associates visited with
Mr. Mike Bates, Director of Public Works, and several other staff members to
review the storm drainage problems in the Hough Park/Isom drainage basin. The ~' ���`;
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City of Jefferson has a significant amount of information available concerning
the general layout of this drainage basin, including tax maps and construction ; i.
Plans for the box culvert under Rjosevalle Drive. "+ n
y Little specific information ri..�.
is available with respect to existing topography, actual field conditions of ',����� ee <,�•';'�
structures, channel, and finished floor elevations of residences which are �_>���,���'°�• '
experiencing flooding problems. Based on this we believe it will be necessary
to gather specific field information concerning the drainage basin to determine
a cost effective solution to mitigate flooding problems. Based on this, the
following process is recommended for the study and recorrnmndation to the City
concerning this drainage basin.
Gathering: The City will. meet with staff members of the
1. Information Gather •,t:>,;t,,%;�j�~'::
City of Jefferson and obtain any additional information concerning
the precise locations and conditions within the drainage basin.
2. Field Reviews: After meeting with the staff, the engineer will make
a detailed field review of the drainage basin to specifically
identify those areas requiring detailed survey work and study.
':'fir:
3. Miller Associates will field survey the existing stream alignment,
gradient of the flew line, top of bank, building locations and law
a�z�'• P
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floor elevations, existing culvert geometries and elevations, along J,}^t�f�
with roadway elevations and geometries. This work will be done using ,
a total station and data collector and will utilize a random base
line control for future design of improvements within this basin. irk �r x
4. Information from the survey will be dumped from the data collector �4
into the computer and a point plot will be prepared. Utilizing•this ry
computer point plot along with tax maps, subdivision plats, street
Plans, and other available data the `
p , engineer will prepare a base
sheet of the entire drainage basin along with a specific base sheet ` ? �
in the area of Hough Park and Isom. ,
5. The engineer will model the existing drainage basin based on full . ?
future development conditions and shall determine stream flows at
various key locations throughout the basin based on a 25 year �� • �,;,
frequency storm. It is our understanding that it is the City's ,'
desire to utilize a higher frequency storm for this basin due to lack i
Of adequate overflow sections to protect residences at Hough Park
and Isom, Carol Drive, and Rosevalley Drive.
6. The engineer will tabulate all information, drainage data, and survey
data, and will analyze the drainage system specifically looking at
the following items: r
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d
a. Upgrade of structures and channel improvements in the Hough `
Park/Isom, area;
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b. channel improvements from Hough Park to Carol Drive;
C. Structural improvements to the drainage structure at Carol
3;x Drive; and
y> d. Analysis of the box culvert under Rosevalley Drive to verify
adequacy under flooding conditions. Y
7. All data will be evaluated and preliminary cost estimates and an
outlined of proposed improvements will be generated in a report
y' outlining the various options and various recommendations of the
options will be presented to the City. '
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ry This report will provide all the technical information that would be necessary `
to design and construct the improvements to the drainage system. The flow data
should assist the City in preparing a 1.ninimum low floor elevation for development
p
of the vacant lots along Carol Drive. The following is a breakdown of the hours 4
we believe are necessary for the various tasks to complete this study. This man t
a, power hour loading chart is presented to demonstrate the detailed level of effort
a3°
that we believe necessary to complete the study.
} Code Description PM Er Tech Drift Crew Admn Cler Cost 01 Proj eat Management 3 3
• ' 02 Client Meetings 6 1 $ 40
v ' 03 Public Meetings 3 1 $ 20 '
07 WA 1 2 2 1 ;
{ 10 Prep Base - Digitize
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Into Computer 10 $1001
ti
11 Field Review 6 1 $ 20
` 12 Calc Drainage Areas 2 ,J
Y ,1
20 Fld Surveys - Total Sta
Data Collector 1 1 24 $240
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' 21 Draft Base Sht - Hough
+' Park,/Isom 1 3 10
22 Draft Channel X Secs 1 8
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30 Model Drainage Basin 8 $ 80
31 Analyze Hough Park/Isom 8
$ 80
32 Analyze Carol Drive 4 $ 40
33 Analyze Rosevalley Drive 6 $ 60
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35 Prelim Design TxprovaTientS 6
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• Cost Estimates
1
Draft Report
38 Report Graphics 8
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i 58 17 32 24 3 10 $680
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Based on - of effort, the estimated fee for • portion of
project would range fran $6,600 to $7,780. As we discussed, we have included
the surveying of this drainage basin within our scope of services. We understand
that - City of Jefferson desire • provide - tliewelves. this
�i done • • • • •ti to •• - field review • prepare • • outline
of survey requirements to - City and allow to provide - survey •
this project. •• • taken, • • I - •� • }�
provide us with a point • • of - overall basin and the Hough Park/Isam area yyr
at scales specified along with copy of the field notes and we would do the final
detailing • - •- - • report present.
• preliminary • - •I {
If the City desires to provide the surveying therselves, we would anticipate a
savings to the City of $1,465. Following is a drawing showing the proposed study
t' area for project.
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PART 2 -- DESIGN PROPOSAL
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It is the understanding of Miller Associates that the City of Jefferson desires
to contract the design of improvements to the drainage system at Hough Park and
Isom as part of this basic contract. It is somewhat difficult to establish exact "' ar
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design costs as we have not yet established what the scope of the design will
be at this time. Therefore, we have included a proposed design
contract that would cover storm drainage for this
location only. g ����� at the Hough Park/Isom ,•
The assumed design scope would be the improvements to the replacement of all t
drainage structures and inlets at this intersection along with improvements to :r
the entrances of the structures and swales in this area. It is possible that
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we would include some additional improvements to private property such as .ra G
driveway to
regrading the dr y keep storm drainage in the street gutter, replace�nerit
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• of curb and gutters on Isom, and raising the sill around the basement entrance
to a residence. ;: ., '•:<; ,:
It is anticipated that the preliminary design of these improvements would be
<' included at the study phase along with preparation of the base sheet for specific slhris,k,'
design of these improvements. No time is included within this proposal for anya �
legal property boundary surveys or descriptions for acquisition. It is assumed
that the City has drainage easements crier the existing structures and does have
the right to modify these structures as necessary. We anticipate the final plans
to include a cover sheet, a legend, and note sheet, one plan sheet of
improvements, and a detail sheet. The specifications would include only
technical specifications for this project and bid quantities. It is assumed that x` r
the City of Jefferson would provide all front end bid documents necessary to bid x s,
. the project.
Upon completion of plans and specifications a 'final meeting would be held with ;{
the client to review the final plans for approval. The following is a table of
the proposed design tasks and man power hour loadings necessary for the
letion of the design� phase of this project. �
Code Description PM •Ergr Tech Drft Crew Admn Cler Cost
01 Project Management 2 2 1
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07 WA 1 3 2 1 t
Final Des - Plan 7
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40 Final Des - Details 4
41 Final Des - Specs 4 4
42 Final Draft - Notes & „r
Cover Sht 4 8 $ 40
43 Final. Draft - plan 1 10
44 Final Draft - Details 12 ?`
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peggription PK Engr Tgg4l Drft Crew Adm 'Cler Oost
45 Fina]. Client PZvieW 3 $ 20
3 22 4 32 2 6 $ 60
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Based on the level of effort outlined above and this proposal, the design fees
for the preparation of plans and specifications for improvements to the draimge
stxur-tures at the Hough Park/Isati intersection would range from $2,450 to $2,900.
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I have reviewed the schedule of both our survey personnel and engineering staff
and we believe that we would be able to begin work on this project immediately
upon authorization by the City and would be able to canplete the study portion
of this project in approximatedy 40 days frcrn the time of authorization. Upon
approval • the report and notice • proceed for final design of this project,
we believe we would be able to prepare final plans for this project within three
weeks.
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