HomeMy WebLinkAboutC2018-502 - 7/24/2018 - NA TASK ORDER NO. 10
This Task Order pertains to a Master Services Agreement for Geotechnical and Construction Materials Testing by
and between City of Corpus Christi, Texas (City) and Tolunay-Wonq Engineers, Inc., (Lab) dated January 16,
2018 by Motion No. M2018-005 (Agreement). Lab shall perform services on the project described below as
provided in this Task Order and in the Agreement. This Task Order shall not be binding until it has been properly
signed by both parties. Upon execution, this Task Order shall supplement the Agreement as it pertains to the
project described below.
MSA PROJECT NUMBER/NAME: 17101A Geotechnical and Construction Materials Testing
TASK ORDER PROJECT NUMBER/NAME: 17101K Geotechnical and Construction Materials Testing
1. PROJECT DESCRIPTION: E15152 Bayshore Park Improvements (Parking Lot)
2. SCOPE OF SERVICES—GeoTech and/or Construction Material Services to observe,test and report for the
Bayshore Park Improvements (Parking Lot) project, and as more fully described in Exhibit A.
3. COMPENSATION—The total amount not to exceed for this Task Order only is$6,455.00.
This Task Order is approved, and Lab may proceed. All other terms and conditions of the Agreement rema;� in
full force and effect.
CITY OF CORPUS CHRISTI TOLUNAY-WONG ENGINEERS, INC.
1/a ,,(s
7.Z3 l8
Jeff H. Edmonds, P.E. ate Don R. Rokohl, P. E. Date
Director of Engineering Services Branch Manager
826 South Padre Island Drive
Corpus Christi, TX 78416
(361) 884-5050 Office
drokohl@tweinc.corn
Fund Name Accounting Unit Account No. Activity No. Amount
Bayfront Development 2009 GO 3126-734 550920 E15152-01-3126-EXP $6,455.00
C2018-502
7/24/18
Tolunay-Wong Engineers Inc.
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Tolunay-Wong Engineers, Inc.
826 South Padre Island Drive • Corpus Christi,Texas 78416 • Phone:(361)884-5050
July 10,2018
City of Corpus Christi
P. O. Box 9277
Corpus Christi,Texas 78469-9277
Attn: Ms. Marisa Alaniz,E.I.T.
MarisaAl@cctexas.com
Ref: Proposal for Geotechnical Services
Bayshore Park Parking Lot
Corpus Christi,Texas
TWE Proposal No.: P18-0098
Dear Ms. Alaniz,
Tolunay-Wong Engineers, Inc. (TWE) is pleased to submit this proposal to provide geotechnical
services for the referenced project. This proposal presents a general description of the project, our
proposed scope of services to be provided and the estimated cost for completion of our services
associated with the project.
Project Overview
The project involves investigation of an existing Bayshore Park parking lot on Shoreline Blvd. in
Corpus Christi, Texas. We understand that three previous medians had been paved as part of the
new parking lot. It is desired to test the previous median areas, as well as several areas outside the
previous medians, for thicknesses and in-place density of the flexible base material and subgrade.
Scope of Services
We will provide the personnel, equipment and materials necessary to complete the requirements of
our scope of services. Our scope of services can be categorized into three major areas: field
program, laboratory testing and engineering analysis/report preparation. The purpose of our
geotechnical services will be to provide the geotechnical information needed to assist the Client in
evaluation of the existing parking lot.
Field Program
As requested, the subsurface conditions will be explored by drilling a total of seven (7) test borings
to a depth of 5-ft below existing grade. The test boring locations are shown on a project site plan
that was provided with the request for proposal. It is planned that the borings will be drilled with
truck mounted drilling equipment.
The test boring locations will be identified by TWE and surveyed using a hand-held global
positioning system(GPS)device. This proposal does not include pricing for professional surveying
services to provide precise coordinates and elevations of the test boring locations. If necessary,
pricing for these services can be provided upon request by the Client.
Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • New Orleans
Page 1 of a Task Order No. 10
Exhibit"A"
Page 1 of 4
Tolunay-Wong
10
Engineers, Inc. July 10,2018
TWE Proposal No.P18-0098
Once the test boring locations are identified, we will notify the Texas 811 One Call System prior to
the commencement of our field program for clearance of subsurface utilities and/or pipelines within
the project site. Our field personnel will have the appropriate safety training and will be equipped
with the appropriate personal protective equipment for the field work.
Our geotechnical services will be under the direction of a Professional Engineer experienced in
geotechnical engineering. Our test borings will be logged by an experienced geotechnician. We
will dry-auger the test borings until groundwater is observed or until borehole conditions require the
use of wash-rotary drilling methods. When groundwater is encountered, the level will be allowed to
stabilize for about ten(10)minutes to fifteen(15)minutes prior to completing the test borings.
Geotechnical drilling and sampling will be performed in accordance with ASTM International
standards. Samples will be obtained continuously until the boring completion depth is reached.
The existing pavement section(s) will be penetrated by dry augering and the thickness of the
pavement section component(s) will be carefully measured and recorded by the geotechnician. A
phenolphthalein indicator solution will be applied to the subgrade samples to check for the presence
of lime stabilization.
Fine-grained, cohesive soils will be sampled using pushed, thin-walled Shelby tubes with an inside
diameter of 2.87-in. Our geotechnician will conduct field strength measurements using a pocket
penetrometer or hand torvane device on each cohesive soil sample recovered. The samples will be
wrapped in foil, placed in labeled moisture sealed plastic bags, and placed in core boxes to
minimize disturbance prior to transport to our laboratory.
Where coarse-grained, cohesionless and semi-cohesionless soils are encountered, sampling will be
performed using standard penetration test (SPT) methods. Our geotechnician will monitor the
driving resistance and record blow counts while performing the SPTs. The disturbed samples from
the SPT sampling will be placed in labeled moisture sealed plastic bags and delivered to our
laboratory.
The boreholes will be backfilled with soil cuttings and, as needed, imported backfill materials upon
completion of drilling and sampling. The surface of the boreholes will be repaired with an asphalt
cold patch or freshly mixed bagged concrete,whichever is appropriate.
Laboratory Testing
Selected samples from the test borings will be used for laboratory testing. Our laboratory testing
program will include properties such as moisture content, unit weight, unconfined compressive
strength, unconsolidated-undrained triaxial compressive strength, Atterberg Limits and grain size
distribution including percent passing No. 200 sieve.
Engineering Analysis/Report Preparation
Engineering opinion will be conducted utilizing the information collected during our field program
and laboratory testing services. We will present the results and findings of our geotechnical services
in a final written report. Electronic and hard copies of our final report will be issued to the Client as
requested.
Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • New Or Bans
Page 2 of 4 Task Order No. 10
Exhibit"A"
Page 2 of 4
1 Tolunay-Wong
Engineers, Inc. July 10,02018
g TWE Proposal No.P18-0098
Our final report will include the following:
a. Discussion and conclusions of findings including:
• Summary of field and laboratory tasks;
• Existing project site conditions;
• Subsurface soil and groundwater conditions;
• Boring logs presenting tabulated field and laboratory test results;
b. Based on the results of the field and laboratory testing programs,we will provide our
opinion of the existing pavement section to serve as a light duty parking lot for
automobile and light truck traffic.
Schedule
Upon notice to proceed, our field program can typically commence within about five(5)working days
depending on our current field schedule, site access, weather contingencies and location of subsurface
utility and/or pipelines within the project alignment. We anticipate our field program will take one(1)
working day to complete with laboratory testing beginning as soil samples are returned to the
laboratory. We anticipate that laboratory testing will be completed within one (1) week after
completion of drilling. Preparation of our final report will require one (1) week after all laboratory
testing is completed. We anticipate an overall project duration of about three(3) weeks from notice to
proceed to completion of our final report. During this time, we will communicate with the Client and
provide preliminary geotechnical information as needed to avoid delays in the overall project schedule.
Estimated Cost
The estimated cost associated with our geotechnical services for this project is lump sum of$6,455.
A detailed summary of the estimated cost is presented below. Every reasonable effort will be made
to stay within this proposed budget. Should unforeseen conditions or situations occur that are
beyond the control of TWE, we will not exceed this lump sum amount without prior approval from
the Client.
Description Unit Quantity Rate Extension
Field Program
Mobilization/Demobilization of
1 lump sum 1 $500.00 $500.00
Geotechnical Equipment/Personnel
2 Geotechnical Drilling/Sampling, 0'-50' foot 35 $20.00 $700.00
3 Backfill/Patching of Boring Locations foot 35 $4.00 $140.00
4 Geotechnician day 1 $650.00 $650.00
5 Support Vehicle trip 1 $75.00 , $75.00
6 Standby Time(Outside of TWE hour - $250.00 -
Control)
Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • New Orleans
Page 3 of 4 Task Order No. 10
Exhibit"A"
Page 3 of 4
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1 olunay-Wong
op July 10,2018
Engineers, Inc.
TWE Proposal No.P18-0098
Laboratory Testing
7 Moisture Content/Visual Classification each 10 $20.00 $200.00
8 Atterberg Limits each 4 $50.00 $200.00
9 Percent Finer Than No. 200 Sieve each 10 $50.00 $500.00
10 Sieve Analysis each 2 $65.00 $130.00
11 Unconfined Compression Strength each 3 $50.00 $150.00
12 U-U Triaxial Compression Strength each 3 $60.00 $180.00
Engineering Analysis/Report Preparation
13 Senior Geotechnical Engineer hour 3 $170.00 $510.00
14 Project Manager-Geotechnical hour 16 $150.00 $2,400.00
15 Administrative Assistant hour 2 $60.00 $120.00
Total Cost Estimate $6,455.00
Closing
We understand that the City will issue a Project Task Order upon acceptance of this proposal in
accordance with the Master Service Agreement (Project No. E17101A) between the City of Corpus
Christi and Tolunay-Wong Engineers, Inc. and the Task order will serve as our authorization to
proceed with our services for the project.
If you have any questions regarding this proposal, please contact us at (361) 884-5050. We appreciate
your consideration of TWE for this project and look forward to working with you.
Sincerely,
TOLUNAY-WONG ENGINEERS, INC.
Texas Board of Professional Engineers Firm Registration Number F-000124
�z X2' '26
Don R. Rokohl, P.E.
Branch Manager
DRR/drr
Attachment: Boring Location Plan
Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • New Orleans
Page 4 of 4 ask Order No. 10
Exhibit"A"
Page 4 of 4