ST0502A-CS071129
Page 1 of 1
Keith Marvin - Freeport
From:
"Mark Holliday" <mholliday@tnp-online.com>
To:
"Keith Marvin" <kmarvin@ci.coppell.tx.us>
Date:
11/29/2007 10:26 AM
Subject:
Freeport
Attachments:
Coppell-Freeport-Scope.DOC
Keith,
Attached is the final scope word document for your use to insert in the contract.
Thanks for the opportunity to be of service!
Mark
Mark J. Holliday, P.E.
Principal
12160 North Abrams Road, Suite 508
Dallas, Texas 75243
214.461.9867 main
214.461.9864 fax
mholliday@tnp-online.com
www.tnp-online.com
file://C:\Documents and Settings\radloo\Local Settings\Temp\XPgrpwise\474E93C5City_of...3/5/2010
SCOPE OF SERVICES
The Engineer agrees to render services necessary for the development and completion the
Project as outlined herein. The Basic Services to be performed by Engineer under this
Contract include the following:
The scope of this project generally entails the design of a 3,500 LF section of Freeport Parkway
from West Sandy Lake Road to the entrance of Wagon Wheel Park, including one full-width
bridge. Freeport Parkway is to be designed as a 4-lane divided thoroughfare within a 110’ right-
of-way. The design contract includes the following elements:
1.Design of the northbound and southbound lanes to replace existing two-lane asphalt
roadway, beginning at the existing full pavement section at Wagon Wheel Park and
extending to West Sandy Lake Road. The contracted portion will include design of a
bridge over Cottonwood Creek to replace the existing two-lane structure, and will be
designed in accordance with City standards and matching the bridge to be constructed
on West Sandy Lake Road.
2.Hydrologic/hydraulic study of Cottonwood Creek in order to size bridge and determine
effects to the floodplain, including preparation of map revisions. Work will also extend
approximately 400 LF east to include property identified by City as possible area to be
filled by owner.
3.Design of new underground storm drain facilities within the roadway as necessary to
accommodate roadway and adjacent development runoff.
4.Existing water/sanitary sewer facilities shall be identified, and proposed
stubouts/adjustments shown as necessary. Project also includes design of 2,500 LF of
12-inch water line to connect existing stub-outs from each end. Project also includes
design of 450 LF of 8-inch sanitary sewer line beginning at an existing 15-inch line north
of the bridge, and extending north to an existing manhole near Sandy Lake Rd.
5.Design of an 8’-10’ wide hike/bike trail path along west side of road. Bridge design
shall include allowable space for hike/bike trail path.
6.Coordination with consultants and developers regarding design for adjacent properties.
7.Provide street light foundation location and conduit layout per TXU direction and City
standard details. Scope does not include illumination design.
prepare the
8.Provide boundary survey for six tracts requiring right-of-way dedication and
necessary right-of-way document and related exhibits for acquisition of right-of-way.
BASIC SERVICES:
A. SCHEMATIC DESIGN
1.When requested by the City, the Engineer shall attend preliminary conferences with
authorized representatives of the City regarding the project and such other conferences as
may be necessary in the opinion of the City so that the plans and specifications which are
to be developed hereunder by the Engineer, will result in providing facilities which are
economical in design and conform to instruction from the City.
2.The Engineer shall attend such conferences with officials of other agencies including other
engineering and/or surveying firms under contract with the City, as may be necessary in
the opinion of the City for coordination of the proposed paving and related improvements
with the requirements of such other agencies. It shall be the Engineer’s duty hereunder to
secure necessary information from such agencies.
3.The Engineer shall advise the City with regard to the necessity for subcontract work
such as special surveys, tests, test borings, or other subsurface investigations in
connection with design and engineering work to be performed hereunder. The Engineer
shall also advise the City concerning the results of same. Such surveys, tests, and
investigations shall be made only upon authorization by and at the expense of the City.
4.Schematic layouts will be prepared utilizing digital aerial photograph/topographic files
provided by the City. Alignment alternatives will be prepared using this information and
discussed with the City to evaluate geometrics, impact to property, and right-of-way
acquisition. Any obtained information regarding existing utility lines within the project
limits from utility companies will be shown on the schematic. Boundary surveys of the six
properties anticipated to be impacted will be ongoing during the schematic preparation.
One schematic alignment will be chosen to proceed with preparation of right-of-way
documents and preliminary plans.
5.The Engineer shall provide necessary design field surveys for his use in the preparation of
preliminary and final plans and specifications.
Survey For Design: Provide detailed topographic survey for project along the alignment
corridor. This will include horizontal and vertical location of existing above ground features
and visible utility appurtenances throughout the length of the project corridor including, but
not limited to, existing pavement, fences, water valves, fire hydrants and manholes. Flowlines
of existing culverts will be shot and elevations provided. Survey limits will be 100’
Left/Right of the centerline, and trees greater than 10” diameter will be tied within this
corridor. Topographic cross section survey will extend 250’ upstream and 400’ downstream
from the centerline at the creek crossing for use in the hydraulic modeling. Also included will
be a limited topographic survey for adjacent property to the east as identified by City for
possible area to be filled by owner.
(a)Establish control network utilizing GPS and City of Coppell published datum.
Unless otherwise required, horizontal datum will be NAD 83 and NAVD 88 for
vertical datum.
(b)Contact utility companies and request them to locate utilities which cross or
come close to proposed facilities. Perform field surveys to tie the horizontal and
vertical locations of these utilities when located.
(c)Establish vertical control benchmarks within the project limits on existing
permanent structures.
(d)Tie benchmarks to as-built plans for correlation of datum.
(e)Tie right-of-way lines, property lines and corners, if found, fence lines, and other
visible surface features to the survey control network within the proposed route.
Identify properties by address number and/or business name.
6.The Engineer shall supply the schematic layout to all known utility companies, including
franchised utilities and pipeline companies which have known existing facilities within the
limits of the Project. One set of dated preliminary plans, and one set of dated and
approved advertising (final) plans shall also be submitted at the appropriate intervals.
B. PRELIMINARY DESIGN
1.Upon completion of the agreed upon schematic layout, the Engineer shall then proceed
with preparation of the preliminary design of the project incorporating all comments
received from the City and agreed upon by both the City and the Engineer into these
plans.
a.Prepare existing and proposed typical sections for the project. This will include pavement,
base, and sub-base material callouts in accordance with the City’s design standards.
b.Establish preliminary horizontal centerline alignment.
c.Establish preliminary vertical alignments for full-width roadway construction areas of
project.
d.Show major features on plan sheets including proposed edges of roadway, left turn bay
limits, and median widths.
e.Show preliminary storm system improvements.
f.Develop sequence of construction for proposed project (roll plots with shading of major
phases only).
g.Show known utility crossings and nearby adjacent utilities, and other topographic features
such as light standards, air release valves, and manholes as identified from field surveys
and information provided by utility companies and the City’s record drawings.
h.Provide preliminary bridge plans.
2.The Engineer shall provide detailed design data, profiles, cross-sections where
appropriate, opinions of probable cost, and furnish two (2) copies of detailed preliminary
design plans for the project to the City for review.
3.After receipt of preliminary design review comments from the City, the Engineer shall
make all corrections noted and then commence preparation of the final design plans and
specification/contract documents.
C. FINAL PLANS, SPECIFICATIONS, AND ESTIMATE (P S & E)
1.Incorporating all City review comments from the preliminary design submittal, the
Engineer will complete the final plans, prepare contract documents/specifications, and a
final opinion of probable cost for the authorized construction units. This shall include
summaries of bid items and quantities, but the Engineer does not guarantee that Contractor
bids will not vary from such opinion. Each of these items (2 copies each) shall be
submitted to the City for final approval.
a.Develop miscellaneous sheets such as Title Sheet, Horizontal Control Sheet, General
Notes & Quantities, and Standard Details.
b.Prepare Erosion Control Plan sheets (full size, 1:40 scale) for proposed improvements.
The successful bidder (contractor) will be required to supply and submit a formal SWPPP
to the TCEQ as owner and operator of the construction project.
c.Finalize Typical Sections including General Construction Sequencing and Traffic Control
Notes.
d.Prepare Traffic Control Plan sheets (full size, 1:40 scale) and construction phasing plans
for proposed improvements.
e.Prepare Drainage Area Map (full size, 1:100 scale) for proposed pavement improvements
throughout project. Drainage boundaries will be established through the use of existing
development plans, USGS maps, and other data sources. Field surveying will not be
performed to establish these boundaries. The final Drainage Area Map will include
defined sub-areas with drainage I.D. numbers, area (acres), design frequency, time of
concentration, intensity, runoff coefficients (“C”), and resulting sub-area flow (“Q”)
consistent with the City of Coppell design standards.
f.Prepare Storm Sewer Plan and Profile sheets (full size, 1:20 scale) to account for new
storm sewer throughout project limits. These sheets will include lateral profiles.
g.Prepare final Paving Plan and Profile sheets (full size, 1:20 horizontal scale) for project,
and prepare final bridge plans.
h.Provide final design cross sections every 50 feet along the project, to be included in the
construction documents.
i.Incorporate comments from the utility companies pertaining to the location of existing
facilities and organize a utility coordination meeting among all impacted utilities at City
Hall.
j.Prepare Striping/Signage Plans (full size, 1:40 scale) for proposed project improvements.
k.Provide conduit stub-outs across intersections and median openings per City Standards.
l.Finalize Special Conditions, which will include Special Technical specifications.
m.Meet with City to develop final phasing of construction and traffic control plan (to be
included in construction plans). City will notify the City of Coppell Police and Fire
Departments of all proposed construction phase traffic.
n.Complete quantity take-off and prepare final estimate of probable construction cost based
on final plans.
o.Prepare final bid documents including bid proposal forms, construction plans,
specifications, and contract documents.
2.After receipt of final plan/specifications/contract documents review comments from the
City, the Engineer shall make all corrections noted and then furnish twenty (20) copies of
contract documents and final bid plans to the City for distribution to Contractors for
bidding the Project. Contract documents shall contain the Notice to Bidders, Proposal,
Wage Rates, General and Special Provisions, Special Specifications, Insurance Statement,
Payment, Performance, and Maintenance Bonds, and all other required City Contract
forms.
3.The original drawings of all plans shall be plotted in ink on approved plastic film sheets, or
as otherwise approved by the City Engineer, and shall become the property of the City.
City may use such drawings in any manner it desires provided, however, that the Engineer
shall not be liable for the use of such drawings for any project other than the project
described herein.
D. CONSTRUCTION ADMINISTRATION.
1.The Engineer will assist the City in the advertisement for bids--prepare Notice to Bidders
for required newspaper advertising --and place notice with Texas Contractor magazine and
Dodge Report.
2.The Engineer will attend a pre-bid meeting if deemed necessary by the City.
3.The Engineer shall assist in the tabulation and review of all bids received for the
construction of the improvements, and shall make recommendations to the City concerning
these bids. At any time during the construction of this project, the Engineer shall advise
on special review shop drawings required of the Contractor by the Construction
Contract(s). Such review shall be for general conformance with the design concept and
general compliance with the plans and specifications under the Construction Contract(s).
4.After selection of Contractor(s) and award of contract(s) by the City, the Engineer will
assist in the preparation of contract documents, including contract, performance, payment,
and maintenance bonds and all other related City forms required to initiate construction on
the project(s).
5.Engineer will arrange a pre-construction conference with City staff, Contractor(s), and all
affected utility companies.
6.Engineer will provide periodic field representation and will monitor construction progress
as often as Engineer deems necessary, including possible scheduled meetings with the
project inspector and the Contractor(s) to discuss the construction progress. A written
report can be provided to the City after each of these bi-weekly meetings if needed.
7.Engineer will consult and advise the City regarding the need for any contract change
orders and will prepare change orders as required for City approval.
8.Engineer will be available for interpretation of plans and specifications as may be required
by the Contractor(s) in the field.
9.The Engineer will, with assistance from the City Inspector on the project(s), prepare and
process monthly and final pay requests from the Contractor(s) to the City.
10.Engineer will provide, in conjunction with the City, a final inspection of the project and
provide a “punch list” of deficient items to the Contractor(s).
11.Engineer will revise construction drawings as necessary to adequately reflect any revisions
in the construction from that which was represented on the plans and/or specifications.
12.Engineer will provide the City with one (1) set of mylar reproducible “Record Drawings”
within 30 days after the completion of the project including updated digital files of the new
construction for use in the City’s computerized mapping system.
ADDITIONAL SERVICES:
1. Provide boundary survey for purpose of preparing necessary ROW documents for six parcels.
Required steps will include: research the ownership and obtain deeds courthouse; prepare
right-of-entry letters prior to starting field work; prepare a deed sketch to be used by field
crews in performing the boundary surveys of said tracts; locate adjoining properties as
required by Texas Board of Land Surveying; establish the existing right-of-way of Freeport
Parkway; prepare right-of-way documents consisting of Exhibit A (Parcel Description) and
Exhibit B (Parcel Map) for acquisition.
2. Provide geotechnical investigation report for design of bridge at creek crossing and roadway
pavement. Subsurface conditions will be evaluated with two borings to 60 feet at the bridge,
and six borings to eight feet for the remainder of the roadway. Laboratory investigations will
be made of boring materials. Engineering report will address: soil, rock, and groundwater
conditions; bridge foundation design recommendations; abutment and retaining wall
recommendations; backfill and drainage recommendations; pavement design; and construction
considerations.
3. Provide landscape architecture and irrigation design for the medians in accordance with City’s
desired guidelines. It is anticipated that the Consultant will provide landscape design
improvements based on established streetscape planting schemes as developed on the West
Sandy Lake road section. The consultant will coordinate his efforts with the client’s
representative as necessary. Efforts will include one (1) landscape design concept in sketch
form that conveys the overall design idea that is based on established landscape requirements
set for by the City. The design concept is intended to present to the owner for input and
consensus before proceeding to design development phase. A preliminary opinion of probable
construction cost will be developed at the schematic design phase. An Irrigation design
schematic to be incorporated will be presented at 60% review with final solution developed
for 90% review.
4. Provide hydrology/hydraulic evaluation and analysis of one bridge location at the
Cottonwood Creek crossing. The work will consist of analyzing the existing conditions at
each site, and sizing the structures. The work will be consistent with the information needed
to file an application for a Conditional Letter of Map Revision (CLOMR) and a Letter of map
Revision (LOMR) required for this project. The limits for this project are defined as 200 ft
upstream and 400’ downstream of the bridge location. The downstream property will be
evaluated as directed by the City to evaluate potential fill by the land owner adjacent to the
floodplain.
The data collected for this task includes existing information possessed by City of Coppell in
the form of studies, maps, engineering construction plans, and digital files as well as
information generated in the field specifically for this project. The data collected will include
the current-effective models from the Federal Emergency (FEMA), as well as best available
models from other sources including the Map Mod models.
The Hydrologic Analysis includes the work necessary to confirm the hydrologic models for
Cottonwood Creek upstream of, and including, the existing and proposed crossings at
Freeport Parkway. The Study discharges for existing conditions will be obtained from the
current Flood Insurance Study, and/or models provided by the City as part of the Map Mod
process. The best available models will be used for this project.
The Hydraulic Analysis task includes the work necessary to complete the hydraulic analysis of
Cottonwood Creek within the study area. The work will utilize the HEC-RAS computer
model and will consist of the confirmation of the available current model, development of the
post-project model, the delineation of the 100-year flood plain, and a confirmation of a “no-
rise” condition in Base Flood Elevation (BFE) and Floodway.
Coordination of the models with the adjacent property owners includes the communication of
recommendations and analysis for this project as it relates to properties currently under
development.
TNP will prepare a brief summary of the final recommendations and results of the analysis.
TNP will then begin the work necessary for the preparation and submittal of an application to
the Federal Emergency Management Agency (FEMA), for a Conditional Letter of Map
Revision (CLOMR). Final efforts will include the work necessary for the preparation and
submittal of an application to the Federal Emergency Management Agency (FEMA), for a
Letter of Map Revision (LOMR). It is understood that this work will be completed after the
construction of the project and that the construction of the project will not be significantly
different from the recommended design.
It will be the design intent to not impact the jurisdictional waters beyond the acceptable
threshold in accordance with a nationwide permit of the Section 404 permitting regulations.
Therefore, it is anticipated there will be no notification of the USACE required. Project scope
will include an official determination of the jurisdictional waters and a letter report identifying
project limitations. If impacts cannot be limited to the required threshold, and contact with
the USACE and further report/permit preparation is required, then those efforts will be
additional services.
F. EXCLUSIONS
The intent of this scope of services is to include only the services specifically listed herein and
none others. Services specifically excluded from this scope of services include, but are not
necessarily limited to the items listed below. However, in the event the following tasks need to be
performed, the Consultant and City may mutually agree upon a scope/fee amendment to facilitate
the tasks:
A.Providing an on-site representative.
B.Environmental impact statements, assessments, and 404 permitting beyond that described.
C.Fees for FEMA submittals, permits or advertising.
D.Certification that work is in accordance with plans and specifications, beyond standard
preparation of record drawings described.
E.Environmental cleanup.
F.Floodplain reclamation plans.
G.Trench safety designs.
H.Quality control and testing services during construction.
I.Services in connection with condemnation hearings.
J.Preliminary engineering report.
K.Design of water and sanitary sewer lines beyond those described in scope.
L.Design of retaining walls.
M.On-site safety precautions, programs and responsibility.
N.Consulting services by others not included in proposal.
O.Traffic engineering report or study, or design of signals.
P.Title searches, boundary surveys, or property surveys other than six identified.
Q.Street light illumination design.
COMPENSATION
:
The conceptual opinion of probable construction cost for Paving/Drainage/Water/Sewer
Improvements is $3,978,900.
The maximum overall fee established herein shall not be exceeded without written authorization
from the City of Coppell, justified by increased scope of services.
The following is a summary of the estimated charges for the various elements of the proposed
services:
Part I: Basic Fee (lump sum)
A. Engineering Design..............................................................................$ 285,000
B. Surveying for Design ............................................................................$34,500
Subtotal: $
319,500
Part II: Additional Services
A. Reimbursable Expenses (printing, as-built prep, cost-plus) ……………$ 2,000
B. Boundary survey and ROW documents (6 parcels) …………………. $
22,000
C. Geotechnical ………………………………………………………….. $ 9,800
D. Hydrology/Hydraulic Study/FEMA documents and USACE
Jurisdictional Waters Determination ………….……………………… $ 40,000
Subtotal: $ 73,800
Part III: Additional Services – Landscape Architecture
G. Landscape Architecture and Irrigation Design ..……………………… $ 39,000
Subtotal: $
39,000
Maximum Fee Not to Exceed: $ 432,300