MA1001-CN100324� G cE0 rECrni,c19L
GROUP
March 22, 2010
Mr. George Marshall, P.E.
City of Coppell
255 Parkway Blvd.
Coppell, Texas 75019
Phone: (972) 304 -3562
Email: gmarshall @coppelltx.gov
• GEOTECHNICAL ENGINEERING
• ENVIRONMENTAL CONSULTING
• CONSTRUCTION MATERIALS ENGINEERING AND TESTING
Re: Proposal for Geotechnical Investigation
Pavement Reconstruction
Intersection of Denton Tap Road & Sandy Lake Road
Coppell, Texas
AGG Proposal No. P10 -0309E
Dear Mr. Marshall,
Alliance Geotechnical Group (AGG) understands that we have been selected for the above
referenced project based upon our qualifications in accordance with the Professional Services
Procurement Act for providing engineering services on government projects. We are pleased to
submit this proposal for geotechnical engineering services for the project referenced above.
This proposal includes a description of the project, scope of work, and fee.
PROJECT DESCRIPTION
The project consists of replacing the existing intersection of Denton Tap Road & Sandy Lake
Road in Coppell, Texas. We understand that this existing pavement section consists of pavers
over 8 inches of concrete. We further understand that the existing pavers / concrete will be
removed and replaced with full depth concrete pavement.
SCOPE OF WORK
The geotechnical investigation performed for the referenced project will consist of field and
laboratory investigations, engineering analysis, and a report prepared by a Registered
Professional Engineer.
MEMBER 3228 Halifax Street • Suite A • Dallas, Texas 75247 AN
Tel: 972-444-8889 • Fax: 972-444-8893 • www.aggengr.com
Field Investigation
Intersection of Denton Tap Road & Sandy Lake Road
Coppell, Texas
AGG Proposal P10 -0309E
March 22, 2010
Page 2
The field investigation will consist of drilling two (2) test borings to depths of 10 feet below top of
pavement. For traffic control purposes, the test borings will be located within opposite right hand
turn lanes.
Subsurface soil samples will be secured with thin walled tube and /or split spoon samples
depending on soil type and consistency. All samples will be properly logged, packaged, sealed,
and placed in a core box for transportation to the laboratory. The test borings will be backfilled
with soil cuttings and the pavement will be patched upon completion.
Alliance Geotechnical Group assumes that the client has the right -of -entry to the property and
that the boring locations will be accessible to our conventional truck mounted drilling equipment
during normal working hours. Should unusual soil conditions be encountered, we will call you
with a recommendation and cost estimate to explore these unusual conditions.
For the purpose of this proposal, we have assumed that traffic control will consist of barricading
and shutting down the subject right hand turn lanes. Traffic control flagmen are not anticipated
and have not been included in this proposal. A traffic control plan will be developed and
submitted to the City for approval prior to drilling.
We assume that the drilling will be performed during 9:00 a.m. and 3:30 p.m. during weekdays.
The fee for extensive traffic control signage and barricades and for night drilling has not been
included in this proposal. Should unusual soil conditions be encountered, we will call you with a
recommendation and cost estimate to explore these unusual conditions.
Alliance Geotechnical Group will contact Dig Tess and the City of Coppell's Water Department
to have them locate underground utilities. However, Alliance Geotechnical Group is not
responsible for damage to underground utilities that are not identified prior to drilling.
Laboratory Investigation
Laboratory tests will be conducted to classify the soil and to evaluate the volume change
potential and strength of the soil present at the site. Soil classification tests will consist of
Atterberg limits (plasticity index), moisture content, and dry unit weight. The volume change
potential of the soils will be evaluated by swell tests. The strength of the soil will be estimated
using hand penetrometer test. A lime / PI series test and sulfate tests will also be performed on
selected clay samples.
Engineering Analyses
Results of field and laboratory work will be presented in an engineering report. The report will
include our recommendations to guide design and construction of the new pavement and will
include the following:
CIG� r � rice
Intersection of Denton Tap Road & Sandy Lake Road
Coppell, Texas
AGG Proposal P10 -0309E
March 22, 2010
Page 3
1. Plan of borings, boring logs, water level observations, and laboratory test results.
2. Pavement subgrade stabilization recommendations.
3. Concrete pavement section recommendations based upon design traffic loading provided by
the client.
4. Comments on the presence and effect of expansive soils on pavement construction will be
provided. Alternative methods of reducing any anticipated shrink /swell movements
associated with expansive clays will be included for pavement construction, if required.
GEOTECHNICAL FEES
A specific scope of work and itemized fees are presented on the Project Budget Summary
attached herewith. Based on the scope of work detailed herein, the total cost of the investigation
will not exceed $ 4,985.00 without prior authorization.
TERMS AND CONDITIONS
If this proposal meets with your approval, please sign below to authorize Alliance Geotechnical
Group to perform the work. We look forward to working with you on this project. Please contact
us after reviewing our proposal if you have any questions.
Sincerely,
ALLIANCE GEOTECHNICAL GROUP
Michael D. Roland, P.E.
Principal
ACCEPTED BY:
Name
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Date
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fiLLIHI'ICE
IGI EC CfOTN'ICAL
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Intersection of Denton Tap Road Sandy Lake Road Reconstruction
Coppell, Texas
AGG Proposal No. P10 -0309E (revised)
March 23, 2010
PROJECT BUDGET SUMMARY
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Est inat+ed
U n I t C ost
...
Estimated Cost
FIELD INVESTIGATION
Site Reconnaissance, Drilling Coordination & Traffic
Control Plans, hr
4
$120.00
$480.00
Utility Clearance Coordination, hr
3
$95.00
$285.00
Travel Charge, ea.
2
$30.00
$60.00
Mobilization, Is
1
$300.00
$300.00
Continous Soil Sampling to 10 feet
20
$16.50
$330.00
Pavement Penetration, ea
2
$85.00
$170.00
Pavement Patching, ea
2
$50.00
$100.00
Traffic Control Equipment Rental, day
1
$250.00
$250.00
Set Up Traffic Signs and Cones, boring
2
$200.00
$400.00
Flagmen, man -hour
0
$55.00
$0.00
ESTIMATED FIELD SUBTOTAL
$2,375.00
LABORATORY TESTING
Moisture Content, ea.
6
$7.50
$45.00
Atterberg Limits Series, ea
3
$50.00
$15000
Percent Passing #200 Sieve, ea
2
$30.00
$60.00
Determining Chloride and Sulfate Content in Soils, ea
3
$175.00
$525.00
Swell Tests,ea.
2
$85.00
$170.00
PI / Lime Series Tests, ea.
1
$225.00
$225.00
Editing Soil Samples, hr
1
$120.00
$120.00
ESTIMATED LABORATORY SUBTOTALI
$1,295.00
ENGINEERING REPORT
Senior Geotechnical Engineer, hr
1
$145.00
$14500
Project Engineer, hr
8
$120.00
$960.00
Drafting, hr
2
$55.00
$110.00
Clerical, hr
2
$50.00
$100.00
ESTIMATED ENGINEERING SUBTOTAL $1,315.0
ESTIMATED TOTALI $4 ,985.0