HomeMy WebLinkAboutContract 26224 CITY SECRETARY
CONTRACT NO. 2(
AMENDMENT NO. 1
STATE OF TEXAS § CITY SECRETARY CONTRACT NO.
(No M&C Needed)
COUNTY OF TARRANT §
WHEREAS, the City of Fort Worth (City) and Halff Associates, Inc., (Engineer) made and
entered into City Secretary Contract No. 25308 (the Contract) which was authorized by the City
Council by M&C C-17438 on the 25th day of May, 1999; and
WHEREAS, the Contract involves engineering services for the following project:
Engineering Contract for the Southside II (S2-6) 48—inch Water
Transmission Main from Bolt Street and St. Louis Avenue to the existing
42—inch water line located near the intersection of Granbury Road and
Trail Lake Drive.
WHEREAS, it has become necessary to execute Amendment No. 1 to said Contract to include
an increased scope of work and revised maximum fee;
NOW THEREFORE, City and Engineer, acting herein by and through their duly authorized
representatives, enter into the following agreement which amends the Contract:
1.
Article I of the Contract is amended to include the additional engineering services specified in a
proposal letter dated September 13, 2000, a copy of which is attached hereto and incorporated
herein. The cost to City for the additional services to be performed by Engineer total
$14,880.00.
2.
Article II of the Contract is amended to provide for an increase in the maximum fee to be paid to
Engineer for all work and services performed under the Contract, as amended, so that the total
fee paid by the City for all work and services shall not exceed the sum of$335,600.00.
3.
All other provisions of the contract, which are not expressly amended herein, shall remain in full
force and effect.
EXECUTED on this the day of 1p�v , 2000, in
Fort Worth, Tarrant County, Texas.
APPROVAL RECOMMENDED: APPROVED:
A. Douglas Rademaker, P.E. Mike Groomer
Director, Department of Engineering Assistant City Manager
Halff Associates, Inc.
ENGINEER
ATTEST:
7
loria Pear on, City Secretary /U - -1
By:
Na Jerry F. Roberts, PE
Vice President
IA- ic
Halff Associates, Inc. �sCY�
4000 Fossil Creek Blvd. Contract authorization
Fort Worth, TX 76137
Date
APPROVED AS TO FORM AND LEGALITY:
9aryy WSteinberger
Assistant City Attorney
1
® ® 4000 FOSSL CREEK BOULEVARD
FORT IWORTH,TEXAS 761377
■�® Halff® Associates (817)847-1422 METRO(817)429-9975
FAX(817)232-9784
ENGINEERS • ARCHITECTS • SCIENTISTS
PLANNERS • SURVEYORS
September 13,2000
AVO 18026
Gopal Sahu,P.E.
City of Fort Worth
Department of Engineering
1000 Throckmorton
Fort Worth,Texas 76102
Ref: Revised Amendment No.2,Geotechnical Investigation
Southside II(S2-6)Water Transmission Main
DOE No. 1829
Dear Mr. Sahu:
In response to your request for additional services, Halff Associates is pleased to present this
revised Amendment for the following additional services:
Geotechnical Investigation(by Terra-Mar)
• Field Investigation— Conduct fifteen (15)borings with depths ranging from about 8 to 12
feet.
• Laboratory Investigation—Evaluate soil properties and parameters required for design and
construction.
• Engineering Analysis—Prepare engineering report with boring logs and recommendations
for design and construction.
• Proposed Fee: Terra-Mar $6,098(a copy of Terra-Mar's proposal is attached)
10%MWBE $ 612
TOTAL $6,710
Following is an updated Project Fee Summary
Contract Item Description Fee
Original Contract Notice to Proceed(3/9/98) $320,720
Amendment No. l 12"WL in Bolt $8,170
Amendment No.2 Geotechnical Investigation $6,710
Total $335,600
Please review the enclosed information and do not hesitate to call me if you have any questions
or require additional information regarding this proposal.
Sincerely,
HALFF ASSOCIATES,INC.
71W �( Iffo
Michael A.Moya,P.E. 0MCNA"L GrIK00 EDC�U 0 CE(CV1? PU
R ��vE,
ILli H9
FORT WORTH • DALLAS • HOUSTON • Mr-ALLEN
r li, t
TRANSPORTATION • WATER RESOURCES • LAND DEVELOPMENT • MUNICIPAL • ENVIRONMENTAL • STRUCTURAL
MECHANICAL • ELECTRICAL SURVEYING • GEOGRAPHIC INFORMATION SYSTEMS
ARCHITECTURE LANDSCAPE ARCHITECTURE • PLANNING
�s ^•^ , E51 1264943U; Sep-13-00 4:21 PM; Page 2/2
• HRA-A R
- - Consulting Engineers•Geotechnical•EnvirwOental•Construction Materials Testing
OAU A •PgRT YUpRT}I�NO[1tf'roN•Ar18T1N•!ONGVffiW
._..._:`tea,'---or::� -•
September 11,2000
TMI No. P00-2133FE
(Revised September 13,2000)
Mr. Michael A. Maya, P.E.
HALFF A33OC1ATES, INC.
4000 Fossil Creek Boulevard
Fort Worth, Texas 76137
RE: Proposed Geotechnical Investigation
Southside 6:364nch Water Transmisslon Main
Fort Worth,`texas
Dear Mr. Maya:
Terra-Mar. Inc. (TALI) is pleased to submit this cost estimate 10 perform the technical
Engineering servic es.for the new water main in Fort Worth, Texas. The following paragraphs detail
the proposed scope of our services.
It Is proposed to insfail approximately 17,500 linear feet of a 364nch water transmission main
between St. Louis Avenue and Wabash Avenue in south Fort Worth, texas. The majority of tate line
will be installed with-open-cut excavations; however, subsurface biros will be necessary for two
existing railroad crwsings and three high traffic rads.
The purpose of the geotechnical Investigation will be to evaluate the subsurface soil and
groundwater conditions in the area of the proposed main, and ;;from this evaluation develop
parameters and recommendations for its design and construction.
Fleld invest3aation
Fifteen (15)borings are planned for this investigation. Boring depth* are expected to range from 8
to 12 feet below existing grades, and will penetrate to approximately two (2) to three (3)feet below
the proposed Nowiine elevation. Penetration of the existing pavement sections will be required In
each boring location.
Soil will be sampled Continuously to a depth of five (5) feet and then at five (5) Boot intervals
thereafter. Cohesive•soils will be sampled using thin walled Shelby.tube samplers, while granular
and non-cohesive soils will be sampled by means of the split barrel iaampler in conjunction with the
Standard Penetration Test If encountered, the underlying rock formation will be evaluated using a
TxDOT Cone Penetrometer test at five-foot Intervals.
Water level observations will be recorded in each boring at the completion of drilling operations, and
after a minimum period of 24 hours. These measurements will:be reported on the boring logs at the
appropriate depths....-At the completion of field operations, the:borefibles will be beckfllled, and the
pavement surface will be patdred appropriately.. Sits utility clearaOtce and the staking of boring
locations will be performed by TMI, while others will perform determination of the '"m::^w sr:•ow
elevation at each location. If necessary. v'' �CNGlL V11"ECGD
2400 GnrM at'li e, MIS.25,Fort WerdN Taxan 74118 F1 817.2 363 Fara In r �,
d1 /;et34Y430; Sep-13-00 3:21PM; Page 3/4
rEN -MAN
Mr.Michael A.Moys,P.E.,Haiff Associates,Inc,
Proposal Poo-2133FE,September 11,20M
L>3�O.fatOtY.Investl�ition
The-objective of the::laboratory-testing program will be to evaluate the soil engineering properties
and parameters rw*ired for design and construction of the water midn. Physical properties of the :.
soil. as. wolf as data.".-necessary for classification by theUnifted Sol Classification system will be
determined using classification tests. These tests'will consist•of natural moisture content, dry unit
weights, the percentage passing a number 200 sieve, and: the liquid and plastic limits. The
undrained shear strengths of cohesive soils will be determined by hand penetrometer tests, and
amfirmed•with unco fined compressive strength tasting. The resins of all of these tests will be
included.art the bblang'logsl at theappropriate•depths.
7.a
Ert>riincedM. -MA1Y as,
Aesultl-ofteld and'lab dtritory.viioik fl be.pfesettted:ftr atrt ert$irt lig r�port,.i�vltiich'vt+�H ft<�ude a
.piaci of'bofts,bort'':l s;.artist test results. En ineeri art port '
g og 9 ng. alylQes 11 bb perfomled; and:the re
will address-the-folldvWrrrg-issues:
i surf tci3
4.0-and gMundWater conditions along thw:.z' o ent, includifi• a!t desG ption
the:,SOH-strafi' apfiy,underiyini g rock formation,and any notevierthy'geological condmons.
• ikewrnmended allowabie bearing pressures for dila design of thrust blocks.
Rew nmsndatiai'ts for"Ahe design and consttucticrt..of pro eat eteme0ts With,respet t to :.:. .
expansive•day,soiL
• Spa cateocis:aid •rsgctif`ements-for•ftwtaiials tised'as felt n this site;• indudirig- materiat
properties, arsd,c:ompaction requirements.
. A•-diacusstofl•:on.1he conttrol:of subsurfaci'.watee arid. its effejct on design arid'cotlsbWIon,
siang.wrth'Wer-al site preparation procedu ms, s
Proieo€5chodwe•art••Comr o6twion
K
we propo$e:to the -mU41y.within "a w>�ek f+�ilowliag disnt�penrission to.proceed: Field
oPera€lons:.w i.regUO—a ximli throe.to-five g
..
pPr'aY days; depetitiin weather onditiacns'and'trnffrc
contra tiFiita#ions. :7`tie.:Iaborato tsst1n
ry' S t?m9mm ap •� �tirriai'sly ssvert:Cri teri•iivaikirtg
r ajrs an"d-16".-engin rtg.topptt shOttld be-.F=. llzed appraxiMiftly' r weeks atter project initiation.
PrelifninMJ;iWi ts.t�•aily be,.pr at6tifed as desiired during the'course a study. • i
Cdrriperfs�ltrgn.foe.:thus work.'slkall be can 4e0 basis fidt to Oxcaid $t ,648.'60 without prior.
. .. ... . . authooZatia" A ddeitaited-cvst-estimate Is attached.
a
azpe�ence�l•::erlg1hMOs 'are corrrmlttad to..meetfttg::.your- schedule, and tiva a elate iiia
opport nit�work with you on this project. If any tjuestions arise, plebe do 'not hesitate'to coli.
.. ... .:
lea T:: iter a! let E,Willims; RE is.
oraduat*.1=rfgineer.• Vice President y LJ
.. . ........
r ^•^� , tsl /1t54U43U; Sep-13-00 3:22PM; Page 4/4
ifVAR
.:. 4
:.iiAr,.Mid uel A:map,P.E..*WW..f AawdMov,Inc.
Praposal POO-033FE,Septbmber 11,2000 k .
: .
GEOTECHNICAL-ITEiMiZED COST::ES ROATE
.. Task. .' ESHM&M+ d Per Estirriated-
C .Task.'
ecrintiaia Number Units = Cost
.... Geviret;l�
OrOling:Rtp..:t MMEW ittUDemotillfi$ ori 4 trip 5 75.00 $175.00
ltttem #e 1t_S •5ait pli g.: ' 448 . . .feat... 69:75 41.,44 :a0: . . :..:•.. .:
Paarsmef'¢ackng: c!Paichlg. 15 ,. each Q:O�'. ..
Ti�a�ftic Corot•ad•'. . ... :.. 3 day 5a.O0
SUSTOTAL .FIELD.* NESTIGA'nION " $3,118.00:
Ga Eet:ttl tical Lab&pftrv Myy- oBfiQn '
:.. :Il�lolsttlt+e Ci i> nt 13. .. Gaal . 05.00 se1:61c3•
Ligr3id and tic l:+tom '. 13„ each. : 0:00 S'520.00
:. :LJocO�f�f C re�r�::'sMt .....: : 13 .. !�h 5:00 s45s:00... .
SUBTOTAL—LABORATORYTI=S'FlNG ;1,040.00,
- :•.• dt»l�at���iiiis'erino:a�tf•i�tei�ott Pa� tion :• �: � � .. :. �.
_. _ 541 �OQ...... .. .
.. .. . .:I:a'>gm>rerntig�iitem;'Field•C.00rctmafiort' 12 -. •Uoitr•
Englneeifrig.t�#em,.L.rtb'�oil Cid�ficaltorl 4 hoar 00 6160,00'
1=rrglneerirt ' atem; [?i�1tl�sg 4 hour OD 3160:00.
fh$iiti t.Re " •' 12 hour5:00 slad:0o '
Seri��if Cert�lrarteer Reaor#• �4 hour E30 0;tF4'
v BTOT1 .' ENOl MNG
. . .'I]I�tLFES77Gi�TH7111•T07�tC• .... � _ sa;F�800" ... '
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